OSDN Git Service

To make further changes easier (to better match with current Apple documentation...
authorEric Branlund <ebranlund@fastmail.com>
Wed, 26 Feb 2020 05:29:06 +0000 (21:29 -0800)
committerEric Branlund <ebranlund@fastmail.com>
Wed, 26 Feb 2020 05:29:06 +0000 (21:29 -0800)
src/Makefile.am
src/cocoa/AppDelegate.h
src/cocoa/AppDelegate.m
src/main-cocoa.m

index bdfe4a5..846dbee 100644 (file)
@@ -133,7 +133,7 @@ EXTRA_DIST = \
 if COCOA
 hengband_SOURCES += main-cocoa.m grafmode.h grafmode.c cocoa/AppDelegate.h
 AM_CFLAGS = -mmacosx-version-min=10.8 -Wunguarded-availability
-AM_OBJCFLAGS = -mmacosx-version-min=10.8 -Wunguarded-availability
+AM_OBJCFLAGS = -fobjc-arc -mmacosx-version-min=10.8 -Wunguarded-availability
 hengband_LDFLAGS = -framework cocoa $(AM_LDFLAGS)
 hengband_LINK = MACOSX_DEPLOYMENT_TARGET=10.8 $(OBJCLINK) $(hengband_LDFLAGS) $(LDFLAGS) -o $@
 APPNAME = $(PACKAGE_NAME)
index e7a6ffe..dbe55e0 100644 (file)
@@ -33,5 +33,9 @@
 - (IBAction)toggleWideTiles:(NSMenuItem *)sender;
 - (void)setGraphicsMode:(NSMenuItem *)sender;
 - (void)selectWindow:(id)sender;
+- (void)loadPrefs;
+- (void)linkTermData:(int)termIndex;
+- (void)initWindows;
+- (void)beginGame;
 
 @end
index 3a7450f..ed8a410 100644 (file)
 - (void)selectWindow:(id)sender {
 }
 
+- (void)linkTermData:(int)termIndex {
+}
+
+- (void)initWindows {
+}
+
+- (void)loadPrefs {
+}
+
+- (void)beginGame {
+}
+
 @end
index d6ea506..c10020d 100644 (file)
@@ -90,11 +90,292 @@ static Boolean game_is_finished = FALSE;
 /* Our frames per second (e.g. 60). A value of 0 means unthrottled. */
 static int frames_per_second;
 
-/* Function to get the default font */
-static NSFont *default_font;
-
 @class AngbandView;
 
+/**
+ * Load sound effects based on sound.cfg within the xtra/sound directory;
+ * bridge to Cocoa to use NSSound for simple loading and playback, avoiding
+ * I/O latency by caching all sounds at the start.  Inherits full sound
+ * format support from Quicktime base/plugins.
+ * pelpel favoured a plist-based parser for the future but .cfg support
+ * improves cross-platform compatibility.
+ */
+@interface AngbandSoundCatalog : NSObject {
+@private
+    /**
+     * Stores instances of NSSound keyed by path so the same sound can be
+     * used for multiple events.
+     */
+    NSMutableDictionary *soundsByPath;
+    /**
+     * Stores arrays of NSSound keyed by event number.
+     */
+    NSMutableDictionary *soundArraysByEvent;
+}
+
+/**
+ * If NO, then playSound effectively becomes a do nothing operation.
+ */
+@property (getter=isEnabled) BOOL enabled;
+
+/**
+ * Set up for lazy initialization in playSound().  Set enabled to NO.
+ */
+- (id)init;
+
+/**
+ * Releases the resources acquired for the catalog.
+ */
+- (void)dispose;
+
+/**
+ * If self.enabled is YES and the given event has one or more sounds
+ * corresponding to it in the catalog, plays one of those sounds, chosen at
+ * random.
+ */
+- (void)playSound:(int)event;
+
+/**
+ * Impose an arbitary limit on number of possible samples per event.
+ * Currently not declaring this as a class property for compatibility with
+ * versions of Xcode prior to 8.
+ */
++ (int)maxSamples;
+
+/**
+ * Return the shared sound catalog instance, creating it if it does not
+ * exist yet.  Currently not declaring this as a class property for
+ * compatibility with versions of Xcode prior to 8.
+ */
++ (AngbandSoundCatalog*)sharedSounds;
+
+/**
+ * Release any resouces associated with shared sounds.
+ */
++ (void)clearSharedSounds;
+
+@end
+
+/**
+ * This is a helper function for AngbandSoundCatalog's sharedSounds and
+ * clearSharedSounds.  Implement a Singleton pattern.
+ */
+static __strong AngbandSoundCatalog** get_shared_sounds(void)
+{
+    static __strong AngbandSoundCatalog* catalog = nil;
+
+    return &catalog;
+}
+
+@implementation AngbandSoundCatalog
+
+- (id)init {
+    if (self = [super init]) {
+       self->soundsByPath = nil;
+       self->soundArraysByEvent = nil;
+       self->_enabled = NO;
+    }
+    return self;
+}
+
+- (void)dispose {
+    self->soundsByPath = nil;
+    self->soundArraysByEvent = nil;
+}
+
+- (void)playSound:(int)event {
+    if (! self.enabled) {
+       return;
+    }
+
+    /* Initialize when the first sound is played. */
+    if (self->soundArraysByEvent == nil) {
+       /* Build the "sound" path */
+       char sound_dir[1024];
+       path_build(sound_dir, sizeof(sound_dir), ANGBAND_DIR_XTRA, "sound");
+
+       /* Find and open the config file */
+       char path[1024];
+       path_build(path, sizeof(path), sound_dir, "sound.cfg");
+       FILE *fff = my_fopen(path, "r");
+
+       /* Handle errors */
+       if (!fff) {
+           NSLog(@"The sound configuration file could not be opened.");
+           return;
+       }
+
+       self->soundsByPath = [[NSMutableDictionary alloc] init];
+       self->soundArraysByEvent = [[NSMutableDictionary alloc] init];
+       @autoreleasepool {
+           /*
+            * This loop may take a while depending on the count and size of
+            * samples to load.
+            */
+
+           /* Parse the file */
+           /* Lines are always of the form "name = sample [sample ...]" */
+           char buffer[2048];
+           while (my_fgets(fff, buffer, sizeof(buffer)) == 0) {
+               char *msg_name;
+               char *cfg_sample_list;
+               char *search;
+               char *cur_token;
+               char *next_token;
+               int event;
+
+               /* Skip anything not beginning with an alphabetic character */
+               if (!buffer[0] || !isalpha((unsigned char)buffer[0])) continue;
+
+               /* Split the line into two: message name, and the rest */
+               search = strchr(buffer, ' ');
+               cfg_sample_list = strchr(search + 1, ' ');
+               if (!search) continue;
+               if (!cfg_sample_list) continue;
+
+               /* Set the message name, and terminate at first space */
+               msg_name = buffer;
+               search[0] = '\0';
+
+               /* Make sure this is a valid event name */
+               for (event = MSG_MAX - 1; event >= 0; event--) {
+                   if (strcmp(msg_name, angband_sound_name[event]) == 0)
+                       break;
+               }
+               if (event < 0) continue;
+
+               /*
+                * Advance the sample list pointer so it's at the beginning of
+                * text.
+                */
+               cfg_sample_list++;
+               if (!cfg_sample_list[0]) continue;
+
+               /* Terminate the current token */
+               cur_token = cfg_sample_list;
+               search = strchr(cur_token, ' ');
+               if (search) {
+                   search[0] = '\0';
+                   next_token = search + 1;
+               } else {
+                   next_token = NULL;
+               }
+
+               /*
+                * Now we find all the sample names and add them one by one
+                */
+               while (cur_token) {
+                   NSMutableArray *soundSamples =
+                       [self->soundArraysByEvent
+                            objectForKey:[NSNumber numberWithInteger:event]];
+                   if (soundSamples == nil) {
+                       soundSamples = [[NSMutableArray alloc] init];
+                       [self->soundArraysByEvent
+                            setObject:soundSamples
+                            forKey:[NSNumber numberWithInteger:event]];
+                   }
+                   int num = (int) soundSamples.count;
+
+                   /* Don't allow too many samples */
+                   if (num >= [AngbandSoundCatalog maxSamples]) break;
+
+                   NSString *token_string =
+                       [NSString stringWithUTF8String:cur_token];
+                   NSSound *sound =
+                       [self->soundsByPath objectForKey:token_string];
+
+                   if (! sound) {
+                       /*
+                        * We have to load the sound. Build the path to the
+                        * sample.
+                        */
+                       path_build(path, sizeof(path), sound_dir, cur_token);
+                       struct stat stb;
+                       if (stat(path, &stb) == 0) {
+                           /* Load the sound into memory */
+                           sound = [[NSSound alloc]
+                                        initWithContentsOfFile:[NSString stringWithUTF8String:path]
+                                        byReference:YES];
+                           if (sound) {
+                               [self->soundsByPath setObject:sound
+                                           forKey:token_string];
+                           }
+                       }
+                   }
+
+                   /* Store it if we loaded it */
+                   if (sound) {
+                       [soundSamples addObject:sound];
+                   }
+
+                   /* Figure out next token */
+                   cur_token = next_token;
+                   if (next_token) {
+                        /* Try to find a space */
+                        search = strchr(cur_token, ' ');
+
+                        /*
+                         * If we can find one, terminate, and set new "next".
+                         */
+                        if (search) {
+                            search[0] = '\0';
+                            next_token = search + 1;
+                        } else {
+                            /* Otherwise prevent infinite looping */
+                            next_token = NULL;
+                        }
+                   }
+               }
+           }
+       }
+
+       /* Close the file */
+       my_fclose(fff);
+    }
+
+    @autoreleasepool {
+       NSMutableArray *samples =
+           [self->soundArraysByEvent
+                objectForKey:[NSNumber numberWithInteger:event]];
+
+       if (samples == nil || samples.count == 0) {
+           return;
+       }
+
+       /* Choose a random event. */
+       int s = randint0((int) samples.count);
+       NSSound *sound = samples[s];
+
+       if ([sound isPlaying])
+           [sound stop];
+
+       /* Play the sound. */
+       [sound play];
+    }
+}
+
++ (int)maxSamples {
+    return 16;
+}
+
+/**
+ * For sharedSounds and clearSharedSounds.
+ */
+static __strong AngbandSoundCatalog* gSharedSounds = nil;
+
++ (AngbandSoundCatalog*)sharedSounds {
+    if (gSharedSounds == nil) {
+       gSharedSounds = [[AngbandSoundCatalog alloc] init];
+    }
+    return gSharedSounds;;
+}
+
++ (void)clearSharedSounds {
+    gSharedSounds = nil;
+}
+
+@end
+
 /*
  * To handle fonts where an individual glyph's bounding box can extend into
  * neighboring columns, Term_curs_cocoa(), Term_pict_cocoa(),
@@ -110,235 +391,582 @@ enum PendingCellChangeType {
     CELL_CHANGE_NONE = 0,
     CELL_CHANGE_WIPE,
     CELL_CHANGE_TEXT,
-    CELL_CHANGE_PICT
+    CELL_CHANGE_TILE
 };
-struct PendingCellChange {
+struct PendingTextChange {
+    wchar_t glyph;
+    int color;
     /*
-     * For text rendering, stores the character as a wchar_t; for tile
-     * rendering, stores the column in the tile set for the source tile.
+     * Is YES if glyph is a character that takes up two columns (i.e.
+     * Japanese kanji); otherwise it is NO.
      */
-    union { wchar_t w; char c; } c;
-    /*
-     * For text rendering, stores the color; for tile rendering, stores the
-     * row in the tile set for the source tile.
-     */
-    TERM_COLOR a;
-    /*
-     * For text rendering, is one if wc is a character that takes up two
-     * columns (i.e. Japanese kanji); otherwise it is zero.  For tile
-     * rendering, Stores the column in the tile set for the terrain tile. */
-    char tcol;
-    /*
-     * For tile rendering, stores the row in the tile set for the
-     * terrain tile.
-     */
-    TERM_COLOR trow;
-    enum PendingCellChangeType change_type;
+    BOOL doubleWidth;
+};
+struct PendingTileChange {
+    char fgdCol, fgdRow, bckCol, bckRow;
 };
+struct PendingCellChange {
+    union { struct PendingTextChange txc; struct PendingTileChange tic; } v;
+    enum PendingCellChangeType changeType;
+};
+
+@interface PendingTermChanges : NSObject {
+@private
+    int *colBounds;
+    struct PendingCellChange **changesByRow;
+}
+
+/**
+ * Returns YES if nCol and nRow are a feasible size for the pending changes.
+ * Otherwise, returns NO.
+ */
++ (BOOL)isValidSize:(int)nCol rows:(int)nRow;
+
+/**
+ * Initialize with zero columns and zero rows.
+ */
+- (id)init;
+
+/**
+ * Initialize with nCol columns and nRow rows.  No changes will be marked.
+ */
+- (id)initWithColumnsRows:(int)nCol rows:(int)nRow NS_DESIGNATED_INITIALIZER;
 
-struct PendingRowChange
+/**
+ * Clears all marked changes.
+ */
+- (void)clear;
+
+/**
+ * Changes the bounds over which changes are recorded.  Has the side effect
+ * of clearing any marked changes.  Will throw an exception if nCol or nRow
+ * is negative.
+ */
+- (void)resize:(int)nCol rows:(int)nRow;
+
+/**
+ * Mark the cell, (iCol, iRow), as having changed text.
+ */
+- (void)markTextChange:(int)iCol row:(int)iRow glyph:(wchar_t)g color:(int)c
+        isDoubleWidth:(BOOL)dw;
+
+/**
+ * Mark the cell, (iCol, iRow), as having a changed tile.
+ */
+- (void)markTileChange:(int)iCol row:(int)iRow
+        foregroundCol:(char)fc foregroundRow:(char)fr
+        backgroundCol:(char)bc backgroundRow:(char)br;
+
+/**
+ * Mark the cells from (iCol, iRow) to (iCol + nCol - 1, iRow) as wiped.
+ */
+- (void)markWipeRange:(int)iCol row:(int)iRow n:(int)nCol;
+
+/**
+ * Mark the location of the cursor.  The cursor will be the standard size:
+ * one cell.
+ */
+- (void)markCursor:(int)iCol row:(int)iRow;
+
+/**
+ * Mark the location of the cursor.  The cursor will be w cells wide and
+ * h cells tall and the given location is the position of the upper left
+ * corner.
+ */
+- (void)markBigCursor:(int)iCol row:(int)iRow
+           cellsWide:(int)w cellsHigh:(int)h;
+
+/**
+ * Return the zero-based index of the first column changed for the given
+ * zero-based row index.  If there are no changes in the row, the returned
+ * value will be the number of columns.
+ */
+- (int)getFirstChangedColumnInRow:(int)iRow;
+
+/**
+ * Return the zero-based index of the last column changed for the given
+ * zero-based row index.  If there are no changes in the row, the returned
+ * value will be -1.
+ */
+- (int)getLastChangedColumnInRow:(int)iRow;
+
+/**
+ * Return the type of change at the given cell, (iCol, iRow).
+ */
+- (enum PendingCellChangeType)getCellChangeType:(int)iCol row:(int)iRow;
+
+/**
+ * Return the nature of a text change at the given cell, (iCol, iRow).
+ * Will throw an exception if [obj getCellChangeType:iCol row:iRow] is
+ * neither CELL_CHANGE_TEXT nor CELL_CHANGE_WIPE.
+ */
+- (struct PendingTextChange)getCellTextChange:(int)iCol row:(int)iRow;
+
+/**
+ * Return the nature of a tile change at the given cell, (iCol, iRow).
+ * Will throw an exception if [obj getCellChangeType:iCol row:iRow] is
+ * different than CELL_CHANGE_TILE.
+ */
+- (struct PendingTileChange)getCellTileChange:(int)iCol row:(int)iRow;
+
+/**
+ * Is the number of columns for recording changes.
+ */
+@property (readonly) int columnCount;
+
+/**
+ * Is the number of rows for recording changes.
+ */
+@property (readonly) int rowCount;
+
+/**
+ * Will be YES if there are any pending changes to locations rendered as text.
+ * Otherwise, it will be NO.
+ */
+@property (readonly) BOOL hasTextChanges;
+
+/**
+ * Will be YES if there are any pending changes to locations rendered as tiles.
+ * Otherwise, it will be NO.
+ */
+@property (readonly) BOOL hasTileChanges;
+
+/**
+ * Will be YES if there are any pending wipes.  Otherwise, it will be NO.
+ */
+@property (readonly) BOOL hasWipeChanges;
+
+/**
+ * Is the zero-based index of the first row with changes.  Will be equal to
+ * the number of rows if there are no changes.
+ */
+@property (readonly) int firstChangedRow;
+
+/**
+ * Is the zero-based index of the last row with changes.  Will be equal to
+ * -1 if there are no changes.
+ */
+@property (readonly) int lastChangedRow;
+
+/**
+ * Is the zero-based index for the column with the upper left corner of the
+ * cursor.  It will be -1 if the cursor position has not been set since the
+ * changes were cleared.
+ */
+@property (readonly) int cursorColumn;
+
+/**
+ * Is the zero-based index for the row with the upper left corner of the
+ * cursor.  It will be -1 if the cursor position has not been set since the
+ * changes were cleared.
+ */
+@property (readonly) int cursorRow;
+
+/**
+ * Is the cursor width in number of cells.
+ */
+@property (readonly) int cursorWidth;
+
+/**
+ * Is the cursor height in number of cells.
+ */
+@property (readonly) int cursorHeight;
+
+/**
+ * This is a helper for the mark* messages.
+ */
+- (void)setupForChange:(int)iCol row:(int)iRow n:(int)nCol;
+
+/**
+ * Throw an exception if the given range of column indices is invalid
+ * (including non-positive values for nCol).
+ */
+- (void)checkColumnIndices:(int)iCol n:(int)nCol;
+
+/**
+ * Throw an exception if the given row index is invalid.
+ */
+- (void)checkRowIndex:(int)iRow;
+
+@end
+
+@implementation PendingTermChanges
+
++ (BOOL)isValidSize:(int)nCol rows:(int)nRow
 {
-    /*
-     * These are the first and last columns, inclusive, that have been
-     * modified.  xmin is greater than xmax if no changes have been made.
-     */
-    int xmin, xmax;
-    /*
-     * This points to storage for a number of elements equal to the number
-     * of columns (implicitly gotten from the enclosing AngbandContext).
-     */
-    struct PendingCellChange* cell_changes;
-};
+    if (nCol < 0 ||
+       (size_t) nCol > SIZE_MAX / sizeof(struct PendingCellChange) ||
+       nRow < 0 ||
+       (size_t) nRow > SIZE_MAX / sizeof(struct PendingCellChange*) ||
+       (size_t) nRow > SIZE_MAX / (2 * sizeof(int))) {
+       return NO;
+    }
+    return YES;
+}
 
-static struct PendingRowChange* create_row_change(int ncol)
+- (id)init
 {
-    struct PendingRowChange* prc =
-       (struct PendingRowChange*) malloc(sizeof(struct PendingRowChange));
-    struct PendingCellChange* pcc = (struct PendingCellChange*)
-       malloc(ncol * sizeof(struct PendingCellChange));
-    int i;
+    return [self initWithColumnsRows:0 rows:0];
+}
 
-    if (prc == 0 || pcc == 0) {
-       if (pcc != 0) {
-           free(pcc);
+- (id)initWithColumnsRows:(int)nCol rows:(int)nRow
+{
+    if (self = [super init]) {
+       if (! [PendingTermChanges isValidSize:nCol rows:nRow]) {
+           return nil;
        }
-       if (prc != 0) {
-           free(prc);
+       self->colBounds = malloc((size_t) 2 * sizeof(int) * nRow);
+       if (self->colBounds == 0 && nRow > 0) {
+           return nil;
        }
-       return 0;
+       self->changesByRow = calloc(nRow, sizeof(struct PendingCellChange*));
+       if (self->changesByRow == 0 && nRow > 0) {
+           free(self->colBounds);
+           return nil;
+       }
+       for (int i = 0; i < nRow + nRow; i += 2) {
+           self->colBounds[i] = nCol;
+           self->colBounds[i + 1] = -1;
+       }
+       self->_columnCount = nCol;
+       self->_rowCount = nRow;
+       self->_hasTextChanges = NO;
+       self->_hasTileChanges = NO;
+       self->_hasWipeChanges = NO;
+       self->_firstChangedRow = nRow;
+       self->_lastChangedRow = -1;
+       self->_cursorColumn = -1;
+       self->_cursorRow = -1;
+       self->_cursorWidth = 1;
+       self->_cursorHeight = 1;
     }
+    return self;
+}
 
-    prc->xmin = ncol;
-    prc->xmax = -1;
-    prc->cell_changes = pcc;
-    for (i = 0; i < ncol; ++i) {
-       pcc[i].change_type = CELL_CHANGE_NONE;
+- (void)dealloc
+{
+    if (self->changesByRow != 0) {
+       for (int i = 0; i < self.rowCount; ++i) {
+           if (self->changesByRow[i] != 0) {
+               free(self->changesByRow[i]);
+               self->changesByRow[i] = 0;
+           }
+       }
+       free(self->changesByRow);
+       self->changesByRow = 0;
+    }
+    if (self->colBounds != 0) {
+       free(self->colBounds);
+       self->colBounds = 0;
     }
-    return prc;
 }
 
-
-static void destroy_row_change(struct PendingRowChange* prc)
+- (void)clear
 {
-    if (prc != 0) {
-       if (prc->cell_changes != 0) {
-           free(prc->cell_changes);
+    for (int i = 0; i < self.rowCount; ++i) {
+       self->colBounds[i + i] = self.columnCount;
+       self->colBounds[i + i + 1] = -1;
+       if (self->changesByRow[i] != 0) {
+           free(self->changesByRow[i]);
+           self->changesByRow[i] = 0;
        }
-       free(prc);
     }
+    self->_hasTextChanges = NO;
+    self->_hasTileChanges = NO;
+    self->_hasWipeChanges = NO;
+    self->_firstChangedRow = self.rowCount;
+    self->_lastChangedRow = -1;
+    self->_cursorColumn = -1;
+    self->_cursorRow = -1;
+    self->_cursorWidth = 1;
+    self->_cursorHeight = 1;
 }
 
-
-struct PendingChanges
+- (void)resize:(int)nCol rows:(int)nRow
 {
-    /* Hold the number of rows specified at creation. */
-    int nrow;
-    /*
-     * Hold the position set for the software cursor.  Use negative indices
-     * to indicate that the cursor is not displayed.
-     */
-    int xcurs, ycurs;
-    /* Is nonzero if the cursor should be drawn at double the tile width. */
-    int bigcurs;
-    /* Record whether the changes include any text, picts, or wipes. */
-    int has_text, has_pict, has_wipe;
-    /*
-     * These are the first and last rows, inclusive, that have been
-     * modified.  ymin is greater than ymax if no changes have been made.
-     */
-    int ymin, ymax;
-    /*
-     * This is an array of pointers to the changes.  The number of elements
-     * is the number of rows.  An element will be a NULL pointer if no
-     * modifications have been made to the row.
-     */
-    struct PendingRowChange** rows;
-};
-
+    if (! [PendingTermChanges isValidSize:nCol rows:nRow]) {
+       NSException *exc = [NSException
+                              exceptionWithName:@"PendingTermChangesRowsColumns"
+                              reason:@"resize called with number of columns or rows that is negative or too large"
+                              userInfo:nil];
+       @throw exc;
+    }
 
-static struct PendingChanges* create_pending_changes(int ncol, int nrow)
-{
-    struct PendingChanges* pc =
-       (struct PendingChanges*) malloc(sizeof(struct PendingChanges));
-    struct PendingRowChange** pprc = (struct PendingRowChange**)
-       malloc(nrow * sizeof(struct PendingRowChange*));
+    int *cb = malloc((size_t) 2 * sizeof(int) * nRow);
+    struct PendingCellChange** cbr =
+       calloc(nRow, sizeof(struct PendingCellChange*));
     int i;
 
-    if (pc == 0 || pprc == 0) {
-       if (pprc != 0) {
-           free(pprc);
+    if ((cb == 0 || cbr == 0) && nRow > 0) {
+       if (cbr != 0) {
+           free(cbr);
        }
-       if (pc != 0) {
-           free(pc);
+       if (cb != 0) {
+           free(cb);
        }
-       return 0;
+
+       NSException *exc = [NSException
+                              exceptionWithName:@"OutOfMemory"
+                              reason:@"resize called for PendingTermChanges"
+                              userInfo:nil];
+       @throw exc;
     }
 
-    pc->nrow = nrow;
-    pc->xcurs = -1;
-    pc->ycurs = -1;
-    pc->bigcurs = 0;
-    pc->has_text = 0;
-    pc->has_pict = 0;
-    pc->has_wipe = 0;
-    pc->ymin = nrow;
-    pc->ymax = -1;
-    pc->rows = pprc;
-    for (i = 0; i < nrow; ++i) {
-       pprc[i] = 0;
+    for (i = 0; i < nRow; ++i) {
+       cb[i + i] = nCol;
+       cb[i + i + 1] = -1;
     }
-    return pc;
+    if (self->changesByRow != 0) {
+       for (i = 0; i < self.rowCount; ++i) {
+           if (self->changesByRow[i] != 0) {
+               free(self->changesByRow[i]);
+               self->changesByRow[i] = 0;
+           }
+       }
+       free(self->changesByRow);
+    }
+    if (self->colBounds != 0) {
+       free(self->colBounds);
+    }
+
+    self->colBounds = cb;
+    self->changesByRow = cbr;
+    self->_columnCount = nCol;
+    self->_rowCount = nRow;
+    self->_hasTextChanges = NO;
+    self->_hasTileChanges = NO;
+    self->_hasWipeChanges = NO;
+    self->_firstChangedRow = self.rowCount;
+    self->_lastChangedRow = -1;
+    self->_cursorColumn = -1;
+    self->_cursorRow = -1;
+    self->_cursorWidth = 1;
+    self->_cursorHeight = 1;
 }
 
+- (void)markTextChange:(int)iCol row:(int)iRow glyph:(wchar_t)g color:(int)c
+        isDoubleWidth:(BOOL)dw
+{
+    [self setupForChange:iCol row:iRow n:((dw) ? 2 : 1)];
+    struct PendingCellChange *pcc = self->changesByRow[iRow] + iCol;
+    pcc->v.txc.glyph = g;
+    pcc->v.txc.color = c;
+    pcc->v.txc.doubleWidth = dw;
+    pcc->changeType = CELL_CHANGE_TEXT;
+    /*
+     * Fill in a dummy since the previous character will take up two columns.
+     */
+    if (dw) {
+       pcc[1].v.txc.glyph = 0;
+       pcc[1].v.txc.color = c;
+       pcc[1].v.txc.doubleWidth = NO;
+       pcc[1].changeType = CELL_CHANGE_TEXT;
+    }
+    self->_hasTextChanges = YES;
+}
 
-static void destroy_pending_changes(struct PendingChanges* pc)
+- (void)markTileChange:(int)iCol row:(int)iRow
+        foregroundCol:(char)fc foregroundRow:(char)fr
+        backgroundCol:(char)bc backgroundRow:(char)br
 {
-    if (pc != 0) {
-       if (pc->rows != 0) {
-           int i;
+    [self setupForChange:iCol row:iRow n:1];
+    struct PendingCellChange *pcc = self->changesByRow[iRow] + iCol;
+    pcc->v.tic.fgdCol = fc;
+    pcc->v.tic.fgdRow = fr;
+    pcc->v.tic.bckCol = bc;
+    pcc->v.tic.bckRow = br;
+    pcc->changeType = CELL_CHANGE_TILE;
+    self->_hasTileChanges = YES;
+}
 
-           for (i = 0; i < pc->nrow; ++i) {
-               if (pc->rows[i] != 0) {
-                   destroy_row_change(pc->rows[i]);
-               }
-           }
-           free(pc->rows);
-       }
-       free(pc);
+- (void)markWipeRange:(int)iCol row:(int)iRow n:(int)nCol
+{
+    [self setupForChange:iCol row:iRow n:nCol];
+    struct PendingCellChange *pcc = self->changesByRow[iRow] + iCol;
+    for (int i = 0; i < nCol; ++i) {
+       pcc[i].v.txc.glyph = 0;
+       pcc[i].v.txc.color = 0;
+       pcc[i].changeType = CELL_CHANGE_WIPE;
     }
+    self->_hasWipeChanges = YES;
 }
 
+- (void)markCursor:(int)iCol row:(int)iRow
+{
+    /* Allow negative indices to indicate an invalid cursor. */
+    [self checkColumnIndices:((iCol >= 0) ? iCol : 0) n:1];
+    [self checkRowIndex:((iRow >= 0) ? iRow : 0)];
+    self->_cursorColumn = iCol;
+    self->_cursorRow = iRow;
+    self->_cursorWidth = 1;
+    self->_cursorHeight = 1;
+}
 
-static void clear_pending_changes(struct PendingChanges* pc)
+- (void)markBigCursor:(int)iCol row:(int)iRow
+           cellsWide:(int)w cellsHigh:(int)h
 {
-    pc->xcurs = -1;
-    pc->ycurs = -1;
-    pc->bigcurs = 0;
-    pc->has_text = 0;
-    pc->has_pict = 0;
-    pc->has_wipe = 0;
-    pc->ymin = pc->nrow;
-    pc->ymax = -1;
-    if (pc->rows != 0) {
-       int i;
+    /* Allow negative indices to indicate an invalid cursor. */
+    [self checkColumnIndices:((iCol >= 0) ? iCol : 0) n:1];
+    [self checkRowIndex:((iRow >= 0) ? iRow : 0)];
+    if (w < 1 || h < 1) {
+       NSException *exc = [NSException
+                              exceptionWithName:@"InvalidCursorDimensions"
+                              reason:@"markBigCursor called for PendingTermChanges"
+                              userInfo:nil];
+       @throw exc;
+    }
+    self->_cursorColumn = iCol;
+    self->_cursorRow = iRow;
+    self->_cursorWidth = w;
+    self->_cursorHeight = h;
+}
 
-       for (i = 0; i < pc->nrow; ++i) {
-           if (pc->rows[i] != 0) {
-               destroy_row_change(pc->rows[i]);
-               pc->rows[i] = 0;
-           }
+- (void)setupForChange:(int)iCol row:(int)iRow n:(int)nCol
+{
+    [self checkColumnIndices:iCol n:nCol];
+    [self checkRowIndex:iRow];
+    if (self->changesByRow[iRow] == 0) {
+       self->changesByRow[iRow] =
+           malloc(self.columnCount * sizeof(struct PendingCellChange));
+       if (self->changesByRow[iRow] == 0 && self.columnCount > 0) {
+           NSException *exc = [NSException
+                                  exceptionWithName:@"OutOfMemory"
+                                  reason:@"setupForChange called for PendingTermChanges"
+                                  userInfo:nil];
+           @throw exc;
        }
+       struct PendingCellChange* pcc = self->changesByRow[iRow];
+       for (int i = 0; i < self.columnCount; ++i) {
+           pcc[i].changeType = CELL_CHANGE_NONE;
+       }
+    }
+    if (self.firstChangedRow > iRow) {
+       self->_firstChangedRow = iRow;
+    }
+    if (self.lastChangedRow < iRow) {
+       self->_lastChangedRow = iRow;
+    }
+    if ([self getFirstChangedColumnInRow:iRow] > iCol) {
+       self->colBounds[iRow + iRow] = iCol;
+    }
+    if ([self getLastChangedColumnInRow:iRow] < iCol + nCol - 1) {
+       self->colBounds[iRow + iRow + 1] = iCol + nCol - 1;
     }
 }
 
+- (int)getFirstChangedColumnInRow:(int)iRow
+{
+    [self checkRowIndex:iRow];
+    return self->colBounds[iRow + iRow];
+}
 
-/* Return zero if successful; otherwise return a nonzero value. */
-static int resize_pending_changes(struct PendingChanges* pc, int nrow)
+- (int)getLastChangedColumnInRow:(int)iRow
 {
-    struct PendingRowChange** pprc;
-    int i;
+    [self checkRowIndex:iRow];
+    return self->colBounds[iRow + iRow + 1];
+}
+
+- (enum PendingCellChangeType)getCellChangeType:(int)iCol row:(int)iRow
+{
+    [self checkColumnIndices:iCol n:1];
+    [self checkRowIndex:iRow];
+    if (iRow < self.firstChangedRow || iRow > self.lastChangedRow) {
+       return CELL_CHANGE_NONE;
+    }
+    if (iCol < [self getFirstChangedColumnInRow:iRow] ||
+       iCol > [self getLastChangedColumnInRow:iRow]) {
+       return CELL_CHANGE_NONE;
+    }
+    return self->changesByRow[iRow][iCol].changeType;
+}
+
+- (struct PendingTextChange)getCellTextChange:(int)iCol row:(int)iRow
+{
+    [self checkColumnIndices:iCol n:1];
+    [self checkRowIndex:iRow];
+    if (iRow < self.firstChangedRow || iRow > self.lastChangedRow ||
+       iCol < [self getFirstChangedColumnInRow:iRow] ||
+       iCol > [self getLastChangedColumnInRow:iRow] ||
+       (self->changesByRow[iRow][iCol].changeType != CELL_CHANGE_TEXT &&
+        self->changesByRow[iRow][iCol].changeType != CELL_CHANGE_WIPE)) {
+       NSException *exc = [NSException
+                              exceptionWithName:@"NotTextChange"
+                              reason:@"getCellTextChange called for PendingTermChanges"
+                              userInfo:nil];
+       @throw exc;
+    }
+    return self->changesByRow[iRow][iCol].v.txc;
+}
 
-    if (pc == 0) {
-       return 1;
+- (struct PendingTileChange)getCellTileChange:(int)iCol row:(int)iRow
+{
+    [self checkColumnIndices:iCol n:1];
+    [self checkRowIndex:iRow];
+    if (iRow < self.firstChangedRow || iRow > self.lastChangedRow ||
+       iCol < [self getFirstChangedColumnInRow:iRow] ||
+       iCol > [self getLastChangedColumnInRow:iRow] ||
+       self->changesByRow[iRow][iCol].changeType != CELL_CHANGE_TILE) {
+       NSException *exc = [NSException
+                              exceptionWithName:@"NotTileChange"
+                              reason:@"getCellTileChange called for PendingTermChanges"
+                              userInfo:nil];
+       @throw exc;
     }
+    return self->changesByRow[iRow][iCol].v.tic;
+}
 
-    pprc = (struct PendingRowChange**)
-       malloc(nrow * sizeof(struct PendingRowChange*));
-    if (pprc == 0) {
-       return 1;
+- (void)checkColumnIndices:(int)iCol n:(int)nCol
+{
+    if (iCol < 0) {
+       NSException *exc = [NSException
+                              exceptionWithName:@"InvalidColumnIndex"
+                              reason:@"negative column index"
+                              userInfo:nil];
+       @throw exc;
+    }
+    if (iCol >= self.columnCount || iCol + nCol > self.columnCount) {
+       NSException *exc = [NSException
+                              exceptionWithName:@"InvalidColumnIndex"
+                              reason:@"column index exceeds number of columns"
+                              userInfo:nil];
+       @throw exc;
     }
-    for (i = 0; i < nrow; ++i) {
-       pprc[i] = 0;
+    if (nCol <= 0) {
+       NSException *exc = [NSException
+                              exceptionWithName:@"InvalidColumnIndex"
+                              reason:@"empty column range"
+                              userInfo:nil];
+       @throw exc;
     }
+}
 
-    if (pc->rows != 0) {
-       for (i = 0; i < pc->nrow; ++i) {
-           if (pc->rows[i] != 0) {
-               destroy_row_change(pc->rows[i]);
-           }
-       }
-       free(pc->rows);
-    }
-    pc->nrow = nrow;
-    pc->xcurs = -1;
-    pc->ycurs = -1;
-    pc->bigcurs = 0;
-    pc->has_text = 0;
-    pc->has_pict = 0;
-    pc->has_wipe = 0;
-    pc->ymin = nrow;
-    pc->ymax = -1;
-    pc->rows = pprc;
-    return 0;
+- (void)checkRowIndex:(int)iRow
+{
+    if (iRow < 0) {
+       NSException *exc = [NSException
+                              exceptionWithName:@"InvalidRowIndex"
+                              reason:@"negative row index"
+                              userInfo:nil];
+       @throw exc;
+    }
+    if (iRow >= self.rowCount) {
+       NSException *exc = [NSException
+                              exceptionWithName:@"InvalidRowIndex"
+                              reason:@"row index exceeds number of rows"
+                              userInfo:nil];
+       @throw exc;
+    }
 }
 
+@end
+
 
 /* The max number of glyphs we support.  Currently this only affects
  * updateGlyphInfo() for the calculation of the tile size, fontAscender,
- * fontDescender, ncol_pre, and ncol_post (the glyphArray and glyphWidths
- * members of AngbandContext are only used in updateGlyphInfo()).  The
- * rendering in drawWChar will work for glyphs not in updateGlyphInfo()'s
- * set, and that is used for rendering Japanese characters.
+ * fontDescender, nColPre, and nColPost.  The rendering in drawWChar() will
+ * work for a glyph not in updateGlyphInfo()'s set, and that is used for
+ * rendering Japanese characters, though there may be clipping or clearing
+ * artifacts because it wasn't included in updateGlyphInfo()'s calculations.
  */
 #define GLYPH_COUNT 256
 
@@ -348,62 +976,59 @@ static int resize_pending_changes(struct PendingChanges* pc, int nrow)
 @interface AngbandContext : NSObject <NSWindowDelegate>
 {
 @public
-    
+
     /* The Angband term */
     term *terminal;
-    
-    /* Column and row cont, by default 80 x 24 */
-    size_t cols;
-    size_t rows;
-    
-    /* The size of the border between the window edge and the contents */
-    NSSize borderSize;
-    
-    /* Our array of views */
-    NSMutableArray *angbandViews;
-    
-    /* The buffered image */
-    CGLayerRef angbandLayer;
 
-    /* The font of this context */
-    NSFont *angbandViewFont;
-    
-    /* If this context owns a window, here it is */
-    NSWindow *primaryWindow;
-    
-    /* "Glyph info": an array of the CGGlyphs and their widths corresponding to
-        * the above font. */
-    CGGlyph glyphArray[GLYPH_COUNT];
-    CGFloat glyphWidths[GLYPH_COUNT];
-    
-    /* The size of one tile */
-    NSSize tileSize;
-    
-    /* Font's ascender and descender */
-    CGFloat fontAscender, fontDescender;
-    
-    /* Whether we are currently in live resize, which affects how big we render
-        * our image */
-    int inLiveResize;
-    
-    /* Last time we drew, so we can throttle drawing */
+@private
+    /* Is the last time we drew, so we can throttle drawing. */
     CFAbsoluteTime lastRefreshTime;
 
-    struct PendingChanges* changes;
     /*
-     * These are the number of columns before or after, respectively, a text
-     * change that may need to be redrawn.
+     * Whether we are currently in live resize, which affects how big we
+     * render our image.
      */
-    int ncol_pre, ncol_post;
+    int inLiveResize;
 
     /* Flags whether or not a fullscreen transition is in progress. */
-    BOOL in_fullscreen_transition;
+    BOOL inFullscreenTransition;
+}
 
-@private
+/* Column and row counts, by default 80 x 24 */
+@property int cols;
+@property int rows;
 
-    BOOL _hasSubwindowFlags;
-    BOOL _windowVisibilityChecked;
-}
+/* The size of the border between the window edge and the contents */
+@property (readonly) NSSize borderSize;
+
+/* Our array of views */
+@property NSMutableArray *angbandViews;
+
+/* The buffered image */
+@property CGLayerRef angbandLayer;
+
+/* The font of this context */
+@property NSFont *angbandViewFont;
+
+/* The size of one tile */
+@property (readonly) NSSize tileSize;
+
+/* Font's ascender and descender */
+@property (readonly) CGFloat fontAscender;
+@property (readonly) CGFloat fontDescender;
+
+/*
+ * These are the number of columns before or after, respectively, a text
+ * change that may need to be redrawn.
+ */
+@property (readonly) int nColPre;
+@property (readonly) int nColPost;
+
+/* If this context owns a window, here it is. */
+@property NSWindow *primaryWindow;
+
+/* Is the record of changes to the contents for the next update. */
+@property PendingTermChanges *changes;
 
 @property (nonatomic, assign) BOOL hasSubwindowFlags;
 @property (nonatomic, assign) BOOL windowVisibilityChecked;
@@ -480,6 +1105,17 @@ static int resize_pending_changes(struct PendingChanges* pc, int nrow)
 - (void)saveWindowVisibleToDefaults: (BOOL)windowVisible;
 - (BOOL)windowVisibleUsingDefaults;
 
+/* Class methods */
+/**
+ * Gets the default font for all contexts.  Currently not declaring this as
+ * a class property for compatibility with versions of Xcode prior to 8.
+ */
++ (NSFont*)defaultFont;
+/**
+ * Sets the default font for all contexts.
+ */
++ (void)setDefaultFont:(NSFont*)font;
+
 /* Internal method */
 - (AngbandView *)activeView;
 
@@ -529,7 +1165,8 @@ static void AngbandUpdateWindowVisibility(void)
         * the flags themselves; we just want to know if any are set. */
     for( int i = 1; i < ANGBAND_TERM_MAX; i++ )
     {
-        AngbandContext *angbandContext = angband_term[i]->data;
+        AngbandContext *angbandContext =
+           (__bridge AngbandContext*) (angband_term[i]->data);
 
         if( angbandContext == nil )
         {
@@ -546,12 +1183,12 @@ static void AngbandUpdateWindowVisibility(void)
         {
             if( [angbandContext windowVisibleUsingDefaults] )
             {
-                [angbandContext->primaryWindow orderFront: nil];
+                [angbandContext.primaryWindow orderFront: nil];
                 angbandContext.windowVisibilityChecked = YES;
             }
             else
             {
-                [angbandContext->primaryWindow close];
+                [angbandContext.primaryWindow close];
                 angbandContext.windowVisibilityChecked = NO;
             }
         }
@@ -561,13 +1198,13 @@ static void AngbandUpdateWindowVisibility(void)
 
             if( angbandContext.hasSubwindowFlags && !termHasSubwindowFlags )
             {
-                [angbandContext->primaryWindow close];
+                [angbandContext.primaryWindow close];
                 angbandContext.hasSubwindowFlags = NO;
                 [angbandContext saveWindowVisibleToDefaults: NO];
             }
             else if( !angbandContext.hasSubwindowFlags && termHasSubwindowFlags )
             {
-                [angbandContext->primaryWindow orderFront: nil];
+                [angbandContext.primaryWindow orderFront: nil];
                 angbandContext.hasSubwindowFlags = YES;
                 [angbandContext saveWindowVisibleToDefaults: YES];
             }
@@ -575,10 +1212,12 @@ static void AngbandUpdateWindowVisibility(void)
     }
 
     /* Make the main window key so that user events go to the right spot */
-    AngbandContext *mainWindow = angband_term[0]->data;
-    [mainWindow->primaryWindow makeKeyAndOrderFront: nil];
+    AngbandContext *mainWindow =
+       (__bridge AngbandContext*) (angband_term[0]->data);
+    [mainWindow.primaryWindow makeKeyAndOrderFront: nil];
 }
 
+
 /**
  * ------------------------------------------------------------------------
  * Graphics support
@@ -626,9 +1265,6 @@ static NSString* get_lib_directory(void);
 static NSString* get_doc_directory(void);
 static NSString* AngbandCorrectedDirectoryPath(NSString *originalPath);
 static void prepare_paths_and_directories(void);
-static void load_prefs(void);
-static void load_sounds(void);
-static void init_windows(void);
 static void handle_open_when_ready(void);
 static void play_sound(int event);
 static BOOL check_events(int wait);
@@ -688,10 +1324,7 @@ static bool initialized = FALSE;
 {
     NSBundle *bundle = [NSBundle bundleForClass:[AngbandView class]];
     NSString *path = [bundle pathForImageResource:name];
-    NSImage *result;
-    if (path) result = [[[NSImage alloc] initByReferencingFile:path] autorelease];
-    else result = nil;
-    return result;
+    return (path) ? [[NSImage alloc] initByReferencingFile:path] : nil;
 }
 
 @end
@@ -702,16 +1335,11 @@ static bool initialized = FALSE;
 @synthesize hasSubwindowFlags=_hasSubwindowFlags;
 @synthesize windowVisibilityChecked=_windowVisibilityChecked;
 
-- (NSFont *)selectionFont
-{
-    return angbandViewFont;
-}
-
 - (BOOL)useLiveResizeOptimization
 {
     /* If we have graphics turned off, text rendering is fast enough that we
         * don't need to use a live resize optimization. */
-    return inLiveResize && graphics_are_enabled();
+    return self->inLiveResize && graphics_are_enabled();
 }
 
 - (NSSize)baseSize
@@ -720,7 +1348,9 @@ static bool initialized = FALSE;
         * with pixels that nobody "owns" that may accumulate garbage. In general
         * rounding down is harmless, because any lost pixels may be sopped up by
         * the border. */
-    return NSMakeSize(floor(cols * tileSize.width + 2 * borderSize.width), floor(rows * tileSize.height + 2 * borderSize.height));
+    return NSMakeSize(
+       floor(self.cols * self.tileSize.width + 2 * self.borderSize.width),
+       floor(self.rows * self.tileSize.height + 2 * self.borderSize.height));
 }
 
 /* qsort-compatible compare function for CGSizes */
@@ -730,44 +1360,93 @@ static int compare_advances(const void *ap, const void *bp)
     return (a->width > b->width) - (a->width < b->width);
 }
 
+/**
+ * Precompute certain metrics (tileSize, fontAscender, fontDescender, nColPre,
+ * and nColPost) for the current font.
+ */
 - (void)updateGlyphInfo
 {
-    /* Update glyphArray and glyphWidths */
-    NSFont *screenFont = [angbandViewFont screenFont];
+    NSFont *screenFont = [self.angbandViewFont screenFont];
 
     /* Generate a string containing each MacRoman character */
-    unsigned char latinString[GLYPH_COUNT];
+    /*
+     * Here and below, dynamically allocate working arrays rather than put them
+     * on the stack in case limited stack space is an issue.
+     */
+    unsigned char *latinString = malloc(GLYPH_COUNT);
+    if (latinString == 0) {
+       NSException *exc = [NSException exceptionWithName:@"OutOfMemory"
+                                       reason:@"latinString in updateGlyphInfo"
+                                       userInfo:nil];
+       @throw exc;
+    }
     size_t i;
     for (i=0; i < GLYPH_COUNT; i++) latinString[i] = (unsigned char)i;
-    
+
     /* Turn that into unichar. Angband uses ISO Latin 1. */
-    unichar unicharString[GLYPH_COUNT] = {0};
     NSString *allCharsString = [[NSString alloc] initWithBytes:latinString length:sizeof latinString encoding:NSISOLatin1StringEncoding];
+    unichar *unicharString = malloc(GLYPH_COUNT * sizeof(unichar));
+    if (unicharString == 0) {
+       free(latinString);
+       NSException *exc = [NSException exceptionWithName:@"OutOfMemory"
+                                       reason:@"unicharString in updateGlyphInfo"
+                                       userInfo:nil];
+       @throw exc;
+    }
+    unicharString[0] = 0;
     [allCharsString getCharacters:unicharString range:NSMakeRange(0, MIN(GLYPH_COUNT, [allCharsString length]))];
-    [allCharsString autorelease];
-    
+    allCharsString = nil;
+    free(latinString);
+
     /* Get glyphs */
-    memset(glyphArray, 0, sizeof glyphArray);
-    CTFontGetGlyphsForCharacters((CTFontRef)screenFont, unicharString, glyphArray, GLYPH_COUNT);
-    
+    CGGlyph *glyphArray = calloc(GLYPH_COUNT, sizeof(CGGlyph));
+    if (glyphArray == 0) {
+       free(unicharString);
+       NSException *exc = [NSException exceptionWithName:@"OutOfMemory"
+                                       reason:@"glyphArray in updateGlyphInfo"
+                                       userInfo:nil];
+       @throw exc;
+    }
+    CTFontGetGlyphsForCharacters((CTFontRef)screenFont, unicharString,
+                                glyphArray, GLYPH_COUNT);
+    free(unicharString);
+
     /* Get advances. Record the max advance. */
-    CGSize advances[GLYPH_COUNT] = {};
-    CTFontGetAdvancesForGlyphs((CTFontRef)screenFont, kCTFontHorizontalOrientation, glyphArray, advances, GLYPH_COUNT);
+    CGSize *advances = malloc(GLYPH_COUNT * sizeof(CGSize));
+    if (advances == 0) {
+       free(glyphArray);
+       NSException *exc = [NSException exceptionWithName:@"OutOfMemory"
+                                       reason:@"advances in updateGlyphInfo"
+                                       userInfo:nil];
+       @throw exc;
+    }
+    CTFontGetAdvancesForGlyphs(
+       (CTFontRef)screenFont, kCTFontHorizontalOrientation, glyphArray,
+       advances, GLYPH_COUNT);
+    CGFloat *glyphWidths = malloc(GLYPH_COUNT * sizeof(CGFloat));
+    if (glyphWidths == 0) {
+       free(glyphArray);
+       free(advances);
+       NSException *exc = [NSException exceptionWithName:@"OutOfMemory"
+                                       reason:@"glyphWidths in updateGlyphInfo"
+                                       userInfo:nil];
+       @throw exc;
+    }
     for (i=0; i < GLYPH_COUNT; i++) {
         glyphWidths[i] = advances[i].width;
     }
-    
+
     /* For good non-mono-font support, use the median advance. Start by sorting
         * all advances. */
     qsort(advances, GLYPH_COUNT, sizeof *advances, compare_advances);
-    
+
     /* Skip over any initially empty run */
     size_t startIdx;
     for (startIdx = 0; startIdx < GLYPH_COUNT; startIdx++)
     {
         if (advances[startIdx].width > 0) break;
     }
-    
+
     /* Pick the center to find the median */
     CGFloat medianAdvance = 0;
     if (startIdx < GLYPH_COUNT)
@@ -775,7 +1454,9 @@ static int compare_advances(const void *ap, const void *bp)
                /* In case we have all zero advances for some reason */
         medianAdvance = advances[(startIdx + GLYPH_COUNT)/2].width;
     }
-    
+
+    free(advances);
+
     /*
      * Record the ascender and descender.  Some fonts, for instance DIN
      * Condensed and Rockwell in 10.14, the ascent on '@' exceeds that
@@ -783,28 +1464,38 @@ static int compare_advances(const void *ap, const void *bp)
      * for the glyphs and use that instead of the ascender and descender
      * values if the bounding box result extends farther from the baseline.
      */
-    CGRect bounds = CTFontGetBoundingRectsForGlyphs((CTFontRef) screenFont, kCTFontHorizontalOrientation, glyphArray, NULL, GLYPH_COUNT);
-    fontAscender = [screenFont ascender];
-    if (fontAscender < bounds.origin.y + bounds.size.height) {
-       fontAscender = bounds.origin.y + bounds.size.height;
+    CGRect bounds = CTFontGetBoundingRectsForGlyphs(
+       (CTFontRef) screenFont, kCTFontHorizontalOrientation, glyphArray,
+       NULL, GLYPH_COUNT);
+    self->_fontAscender = [screenFont ascender];
+    if (self->_fontAscender < bounds.origin.y + bounds.size.height) {
+       self->_fontAscender = bounds.origin.y + bounds.size.height;
     }
-    fontDescender = [screenFont descender];
-    if (fontDescender > bounds.origin.y) {
-       fontDescender = bounds.origin.y;
+    self->_fontDescender = [screenFont descender];
+    if (self->_fontDescender > bounds.origin.y) {
+       self->_fontDescender = bounds.origin.y;
     }
 
     /*
      * Record the tile size.  Round both values up to have tile boundaries
      * match pixel boundaries.
      */
-    tileSize.width = ceil(medianAdvance);
-    tileSize.height = ceil(fontAscender - fontDescender);
+    self->_tileSize.width = ceil(medianAdvance);
+    self->_tileSize.height = ceil(self.fontAscender - self.fontDescender);
 
     /*
-     * Determine whether neighboring columns need to redrawn when a character
-     * changes.
+     * Determine whether neighboring columns need to be redrawn when a
+     * character changes.
      */
-    CGRect boxes[GLYPH_COUNT] = {};
+    CGRect *boxes = malloc(GLYPH_COUNT * sizeof(CGRect));
+    if (boxes == 0) {
+       free(glyphWidths);
+       free(glyphArray);
+       NSException *exc = [NSException exceptionWithName:@"OutOfMemory"
+                                       reason:@"boxes in updateGlyphInfo"
+                                       userInfo:nil];
+       @throw exc;
+    }
     CGFloat beyond_right = 0.;
     CGFloat beyond_left = 0.;
     CTFontGetBoundingRectsForGlyphs(
@@ -818,11 +1509,11 @@ static int compare_advances(const void *ap, const void *bp)
        CGFloat compression, offset;
        CGFloat v;
 
-       if (glyphWidths[i] <= tileSize.width) {
+       if (glyphWidths[i] <= self.tileSize.width) {
            compression = 1.;
-           offset = 0.5 * (tileSize.width - glyphWidths[i]);
+           offset = 0.5 * (self.tileSize.width - glyphWidths[i]);
        } else {
-           compression = tileSize.width / glyphWidths[i];
+           compression = self.tileSize.width / glyphWidths[i];
            offset = 0.;
        }
        v = (offset + boxes[i].origin.x) * compression;
@@ -834,12 +1525,17 @@ static int compare_advances(const void *ap, const void *bp)
            beyond_right = v;
        }
     }
-    ncol_pre = ceil(-beyond_left / tileSize.width);
-    if (beyond_right > tileSize.width) {
-       ncol_post = ceil((beyond_right - tileSize.width) / tileSize.width);
+    free(boxes);
+    self->_nColPre = ceil(-beyond_left / self.tileSize.width);
+    if (beyond_right > self.tileSize.width) {
+       self->_nColPost =
+           ceil((beyond_right - self.tileSize.width) / self.tileSize.width);
     } else {
-       ncol_post = 0;
+       self->_nColPost = 0;
     }
+
+    free(glyphWidths);
+    free(glyphArray);
 }
 
 - (void)updateImage
@@ -863,7 +1559,7 @@ static int compare_advances(const void *ap, const void *bp)
         }
     }
 
-    CGLayerRelease(angbandLayer);
+    CGLayerRelease(self.angbandLayer);
     
     /* Use the highest monitor scale factor on the system to work out what
      * scale to draw at - not the recommended method, but works where we
@@ -883,12 +1579,13 @@ static int compare_advances(const void *ap, const void *bp)
     /* Create the layer at the appropriate size */
     size.width = fmax(1, ceil(size.width * angbandLayerScale));
     size.height = fmax(1, ceil(size.height * angbandLayerScale));
-    angbandLayer = CGLayerCreateWithContext(exampleCtx, *(CGSize *)&size, NULL);
+    self.angbandLayer =
+       CGLayerCreateWithContext(exampleCtx, *(CGSize *)&size, NULL);
 
     CFRelease(exampleCtx);
 
     /* Set the new context of the layer to draw at the correct scale */
-    CGContextRef ctx = CGLayerGetContext(angbandLayer);
+    CGContextRef ctx = CGLayerGetContext(self.angbandLayer);
     CGContextScaleCTM(ctx, angbandLayerScale, angbandLayerScale);
 
     [self lockFocus];
@@ -918,16 +1615,16 @@ static int compare_advances(const void *ap, const void *bp)
 
 - (void)setTerm:(term *)t
 {
-    terminal = t;
+    self->terminal = t;
 }
 
 - (void)viewWillStartLiveResize:(AngbandView *)view
 {
 #if USE_LIVE_RESIZE_CACHE
-    if (inLiveResize < INT_MAX) inLiveResize++;
+    if (self->inLiveResize < INT_MAX) self->inLiveResize++;
     else [NSException raise:NSInternalInconsistencyException format:@"inLiveResize overflow"];
     
-    if (inLiveResize == 1 && graphics_are_enabled())
+    if (self->inLiveResize == 1 && graphics_are_enabled())
     {
         [self updateImage];
         
@@ -940,10 +1637,10 @@ static int compare_advances(const void *ap, const void *bp)
 - (void)viewDidEndLiveResize:(AngbandView *)view
 {
 #if USE_LIVE_RESIZE_CACHE
-    if (inLiveResize > 0) inLiveResize--;
+    if (self->inLiveResize > 0) self->inLiveResize--;
     else [NSException raise:NSInternalInconsistencyException format:@"inLiveResize underflow"];
     
-    if (inLiveResize == 0 && graphics_are_enabled())
+    if (self->inLiveResize == 0 && graphics_are_enabled())
     {
         [self updateImage];
         
@@ -962,7 +1659,7 @@ static int compare_advances(const void *ap, const void *bp)
     if (frames_per_second > 0)
     {
         CFAbsoluteTime now = CFAbsoluteTimeGetCurrent();
-        CFTimeInterval timeSinceLastRefresh = now - lastRefreshTime;
+        CFTimeInterval timeSinceLastRefresh = now - self->lastRefreshTime;
         CFTimeInterval timeUntilNextRefresh = (1. / (double)frames_per_second) - timeSinceLastRefresh;
         
         if (timeUntilNextRefresh > 0)
@@ -970,14 +1667,14 @@ static int compare_advances(const void *ap, const void *bp)
             usleep((unsigned long)(timeUntilNextRefresh * 1000000.));
         }
     }
-    lastRefreshTime = CFAbsoluteTimeGetCurrent();
+    self->lastRefreshTime = CFAbsoluteTimeGetCurrent();
 }
 
 - (void)drawWChar:(wchar_t)wchar inRect:(NSRect)tile context:(CGContextRef)ctx
 {
-    CGFloat tileOffsetY = fontAscender;
+    CGFloat tileOffsetY = self.fontAscender;
     CGFloat tileOffsetX = 0.0;
-    NSFont *screenFont = [angbandViewFont screenFont];
+    NSFont *screenFont = [self.angbandViewFont screenFont];
     UniChar unicharString[2] = {(UniChar)wchar, 0};
 
     /* Get glyph and advance */
@@ -1041,7 +1738,7 @@ static int compare_advances(const void *ap, const void *bp)
 - (CGContextRef)lockFocusUnscaled
 {
     /* Create an NSGraphicsContext representing this CGLayer */
-    CGContextRef ctx = CGLayerGetContext(angbandLayer);
+    CGContextRef ctx = CGLayerGetContext(self.angbandLayer);
     NSGraphicsContext *context = [NSGraphicsContext graphicsContextWithGraphicsPort:ctx flipped:NO];
     [NSGraphicsContext saveGraphicsState];
     [NSGraphicsContext setCurrentContext:context];
@@ -1060,7 +1757,7 @@ static int compare_advances(const void *ap, const void *bp)
 - (NSSize)imageSize
 {
     /* Return the size of our layer */
-    CGSize result = CGLayerGetSize(angbandLayer);
+    CGSize result = CGLayerGetSize(self.angbandLayer);
     return NSMakeSize(result.width, result.height);
 }
 
@@ -1073,16 +1770,16 @@ static int compare_advances(const void *ap, const void *bp)
 - (NSRect)rectInImageForTileAtX:(int)x Y:(int)y
 {
     int flippedY = y;
-    return NSMakeRect(x * tileSize.width + borderSize.width, flippedY * tileSize.height + borderSize.height, tileSize.width, tileSize.height);
+    return NSMakeRect(x * self.tileSize.width + self.borderSize.width,
+                     flippedY * self.tileSize.height + self.borderSize.height,
+                     self.tileSize.width, self.tileSize.height);
 }
 
 - (void)setSelectionFont:(NSFont*)font adjustTerminal: (BOOL)adjustTerminal
 {
     /* Record the new font */
-    [font retain];
-    [angbandViewFont release];
-    angbandViewFont = font;
-    
+    self.angbandViewFont = font;
+
     /* Update our glyph info */
     [self updateGlyphInfo];
 
@@ -1090,10 +1787,12 @@ static int compare_advances(const void *ap, const void *bp)
     {
         /* Adjust terminal to fit window with new font; save the new columns
                 * and rows since they could be changed */
-        NSRect contentRect = [self->primaryWindow contentRectForFrameRect: [self->primaryWindow frame]];
+        NSRect contentRect =
+           [self.primaryWindow
+                contentRectForFrameRect: [self.primaryWindow frame]];
 
        [self setMinimumWindowSize:[self terminalIndex]];
-       NSSize size = self->primaryWindow.contentMinSize;
+       NSSize size = self.primaryWindow.contentMinSize;
        BOOL windowNeedsResizing = NO;
        if (contentRect.size.width < size.width) {
            contentRect.size.width = size.width;
@@ -1106,7 +1805,7 @@ static int compare_advances(const void *ap, const void *bp)
        if (windowNeedsResizing) {
            size.width = contentRect.size.width;
            size.height = contentRect.size.height;
-           [self->primaryWindow setContentSize:size];
+           [self.primaryWindow setContentSize:size];
        }
         [self resizeTerminalWithContentRect: contentRect saveToDefaults: YES];
     }
@@ -1120,28 +1819,29 @@ static int compare_advances(const void *ap, const void *bp)
     if ((self = [super init]))
     {
         /* Default rows and cols */
-        self->cols = 80;
-        self->rows = 24;
+        self->_cols = 80;
+        self->_rows = 24;
 
         /* Default border size */
-        self->borderSize = NSMakeSize(2, 2);
+        self->_borderSize = NSMakeSize(2, 2);
 
         /* Allocate our array of views */
-        angbandViews = [[NSMutableArray alloc] init];
-        
-       self->changes = create_pending_changes(self->cols, self->rows);
-       if (self->changes == 0) {
-           NSLog(@"AngbandContext init:  out of memory for pending changes");
-       }
-       self->ncol_pre = 0;
-       self->ncol_post = 0;
+        self->_angbandViews = [[NSMutableArray alloc] init];
+
+       self->_nColPre = 0;
+       self->_nColPost = 0;
 
-       self->in_fullscreen_transition = NO;
+       self->_changes =
+           [[PendingTermChanges alloc] initWithColumnsRows:self->_cols
+                                       rows:self->_rows];
+       self->lastRefreshTime = CFAbsoluteTimeGetCurrent();
+       self->inLiveResize = 0;
+       self->inFullscreenTransition = NO;
 
         /* Make the image. Since we have no views, it'll just be a puny 1x1 image. */
         [self updateImage];
 
-        _windowVisibilityChecked = NO;
+        self->_windowVisibilityChecked = NO;
     }
     return self;
 }
@@ -1152,37 +1852,32 @@ static int compare_advances(const void *ap, const void *bp)
  */
 - (void)dispose
 {
-    terminal = NULL;
-    
+    self->terminal = NULL;
+
     /* Disassociate ourselves from our angbandViews */
-    [angbandViews makeObjectsPerformSelector:@selector(setAngbandContext:) withObject:nil];
-    [angbandViews release];
-    angbandViews = nil;
-    
+    [self.angbandViews makeObjectsPerformSelector:@selector(setAngbandContext:) withObject:nil];
+    self.angbandViews = nil;
+
     /* Destroy the layer/image */
-    CGLayerRelease(angbandLayer);
-    angbandLayer = NULL;
+    CGLayerRelease(self.angbandLayer);
+    self.angbandLayer = NULL;
 
     /* Font */
-    [angbandViewFont release];
-    angbandViewFont = nil;
-    
+    self.angbandViewFont = nil;
+
     /* Window */
-    [primaryWindow setDelegate:nil];
-    [primaryWindow close];
-    [primaryWindow release];
-    primaryWindow = nil;
+    [self.primaryWindow setDelegate:nil];
+    [self.primaryWindow close];
+    self.primaryWindow = nil;
 
     /* Pending changes */
-    destroy_pending_changes(self->changes);
-    self->changes = 0;
+    self.changes = nil;
 }
 
 /* Usual Cocoa fare */
 - (void)dealloc
 {
     [self dispose];
-    [super dealloc];
 }
 
 #if 0
@@ -1234,17 +1929,32 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
     }
     return count;
 }
-#endif
+#endif
+
+- (void)addAngbandView:(AngbandView *)view
+{
+    if (! [self.angbandViews containsObject:view])
+    {
+        [self.angbandViews addObject:view];
+        [self updateImage];
+        [self setNeedsDisplay:YES]; /* We'll need to redisplay everything anyways, so avoid creating all those little redisplay rects */
+        [self requestRedraw];
+    }
+}
+
+/**
+ * For defaultFont and setDefaultFont.
+ */
+static __strong NSFont* gDefaultFont = nil;
+
++ (NSFont*)defaultFont
+{
+    return gDefaultFont;
+}
 
-- (void)addAngbandView:(AngbandView *)view
++ (void)setDefaultFont:(NSFont*)font
 {
-    if (! [angbandViews containsObject:view])
-    {
-        [angbandViews addObject:view];
-        [self updateImage];
-        [self setNeedsDisplay:YES]; /* We'll need to redisplay everything anyways, so avoid creating all those little redisplay rects */
-        [self requestRedraw];
-    }
+    gDefaultFont = font;
 }
 
 /**
@@ -1256,12 +1966,12 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
  */
 - (AngbandView *)activeView
 {
-    if ([angbandViews count] == 1)
-        return [angbandViews objectAtIndex:0];
-    
+    if ([self.angbandViews count] == 1)
+        return [self.angbandViews objectAtIndex:0];
+
     AngbandView *result = nil;
     float maxWidth = 0;
-    for (AngbandView *angbandView in angbandViews)
+    for (AngbandView *angbandView in self.angbandViews)
     {
         float width = [angbandView frame].size.width;
         if (width > maxWidth)
@@ -1277,7 +1987,7 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
 {
     /* If we're live-resizing with graphics, we're using the live resize
         * optimization, so don't update the image. Otherwise do it. */
-    if (! (inLiveResize && graphics_are_enabled()) && view == [self activeView])
+    if (! (self->inLiveResize && graphics_are_enabled()) && view == [self activeView])
     {
         [self updateImage];
         
@@ -1289,55 +1999,53 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
 
 - (void)removeAngbandView:(AngbandView *)view
 {
-    if ([angbandViews containsObject:view])
+    if ([self.angbandViews containsObject:view])
     {
-        [angbandViews removeObject:view];
+        [self.angbandViews removeObject:view];
         [self updateImage];
         [self setNeedsDisplay:YES]; /* We'll need to redisplay everything anyways, so avoid creating all those little redisplay rects */
-        if ([angbandViews count]) [self requestRedraw];
+        if ([self.angbandViews count]) [self requestRedraw];
     }
 }
 
 
 - (NSWindow *)makePrimaryWindow
 {
-    if (! primaryWindow)
+    if (! self.primaryWindow)
     {
         /* This has to be done after the font is set, which it already is in
                 * term_init_cocoa() */
-        CGFloat width = self->cols * tileSize.width + borderSize.width * 2.0;
-        CGFloat height = self->rows * tileSize.height + borderSize.height * 2.0;
-        NSRect contentRect = NSMakeRect( 0.0, 0.0, width, height );
+        NSSize sz = self.baseSize;
+        NSRect contentRect = NSMakeRect( 0.0, 0.0, sz.width, sz.height );
 
         NSUInteger styleMask = NSTitledWindowMask | NSResizableWindowMask | NSMiniaturizableWindowMask;
 
         /* Make every window other than the main window closable */
-        if( angband_term[0]->data != self )
+        if ((__bridge AngbandContext*) (angband_term[0]->data) != self)
         {
             styleMask |= NSClosableWindowMask;
         }
 
-        primaryWindow = [[NSWindow alloc] initWithContentRect:contentRect styleMask: styleMask backing:NSBackingStoreBuffered defer:YES];
+        self.primaryWindow = [[NSWindow alloc] initWithContentRect:contentRect styleMask: styleMask backing:NSBackingStoreBuffered defer:YES];
 
         /* Not to be released when closed */
-        [primaryWindow setReleasedWhenClosed:NO];
-        [primaryWindow setExcludedFromWindowsMenu: YES]; /* we're using custom window menu handling */
+        [self.primaryWindow setReleasedWhenClosed:NO];
+        [self.primaryWindow setExcludedFromWindowsMenu: YES]; /* we're using custom window menu handling */
 
         /* Make the view */
         AngbandView *angbandView = [[AngbandView alloc] initWithFrame:contentRect];
         [angbandView setAngbandContext:self];
-        [angbandViews addObject:angbandView];
-        [primaryWindow setContentView:angbandView];
-        [angbandView release];
+        [self.angbandViews addObject:angbandView];
+        [self.primaryWindow setContentView:angbandView];
 
         /* We are its delegate */
-        [primaryWindow setDelegate:self];
+        [self.primaryWindow setDelegate:self];
 
         /* Update our image, since this is probably the first angband view
                 * we've gotten. */
         [self updateImage];
     }
-    return primaryWindow;
+    return self.primaryWindow;
 }
 
 
@@ -1359,23 +2067,23 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
     NSRect bounds = [view bounds];
     if (viewInLiveResize) CGContextSetInterpolationQuality(context, kCGInterpolationLow);
     CGContextSetBlendMode(context, kCGBlendModeCopy);
-    CGContextDrawLayerInRect(context, *(CGRect *)&bounds, angbandLayer);
+    CGContextDrawLayerInRect(context, *(CGRect *)&bounds, self.angbandLayer);
     if (viewInLiveResize) CGContextSetInterpolationQuality(context, kCGInterpolationDefault);
 }
 
 - (BOOL)isOrderedIn
 {
-    return [[[angbandViews lastObject] window] isVisible];
+    return [[[self.angbandViews lastObject] window] isVisible];
 }
 
 - (BOOL)isMainWindow
 {
-    return [[[angbandViews lastObject] window] isMainWindow];
+    return [[[self.angbandViews lastObject] window] isMainWindow];
 }
 
 - (void)setNeedsDisplay:(BOOL)val
 {
-    for (NSView *angbandView in angbandViews)
+    for (NSView *angbandView in self.angbandViews)
     {
         [angbandView setNeedsDisplay:val];
     }
@@ -1383,7 +2091,7 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
 
 - (void)setNeedsDisplayInBaseRect:(NSRect)rect
 {
-    for (NSView *angbandView in angbandViews)
+    for (NSView *angbandView in self.angbandViews)
     {
         [angbandView setNeedsDisplayInRect: rect];
     }
@@ -1411,19 +2119,17 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
 
 - (void)resizeTerminalWithContentRect: (NSRect)contentRect saveToDefaults: (BOOL)saveToDefaults
 {
-    CGFloat newRows = floor( (contentRect.size.height - (borderSize.height * 2.0)) / tileSize.height );
-    CGFloat newColumns = ceil( (contentRect.size.width - (borderSize.width * 2.0)) / tileSize.width );
+    CGFloat newRows = floor(
+       (contentRect.size.height - (self.borderSize.height * 2.0)) /
+       self.tileSize.height);
+    CGFloat newColumns = ceil(
+       (contentRect.size.width - (self.borderSize.width * 2.0)) /
+       self.tileSize.width);
 
     if (newRows < 1 || newColumns < 1) return;
-    self->cols = newColumns;
-    self->rows = newRows;
-
-    if (resize_pending_changes(self->changes, self->rows) != 0) {
-       destroy_pending_changes(self->changes);
-       self->changes = 0;
-       NSLog(@"out of memory for pending changes with resize of terminal %d",
-             [self terminalIndex]);
-    }
+    self->_cols = newColumns;
+    self->_rows = newRows;
+    [self.changes resize:self.cols rows:self.rows];
 
     if( saveToDefaults )
     {
@@ -1433,22 +2139,22 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
         if( termIndex < (int)[terminals count] )
         {
             NSMutableDictionary *mutableTerm = [[NSMutableDictionary alloc] initWithDictionary: [terminals objectAtIndex: termIndex]];
-            [mutableTerm setValue: [NSNumber numberWithUnsignedInt: self->cols] forKey: AngbandTerminalColumnsDefaultsKey];
-            [mutableTerm setValue: [NSNumber numberWithUnsignedInt: self->rows] forKey: AngbandTerminalRowsDefaultsKey];
+            [mutableTerm setValue: [NSNumber numberWithInteger: self.cols]
+                        forKey: AngbandTerminalColumnsDefaultsKey];
+            [mutableTerm setValue: [NSNumber numberWithInteger: self.rows]
+                        forKey: AngbandTerminalRowsDefaultsKey];
 
             NSMutableArray *mutableTerminals = [[NSMutableArray alloc] initWithArray: terminals];
             [mutableTerminals replaceObjectAtIndex: termIndex withObject: mutableTerm];
 
             [[NSUserDefaults standardUserDefaults] setValue: mutableTerminals forKey: AngbandTerminalsDefaultsKey];
-            [mutableTerminals release];
-            [mutableTerm release];
         }
         [[NSUserDefaults standardUserDefaults] synchronize];
     }
 
     term *old = Term;
     Term_activate( self->terminal );
-    Term_resize( (int)newColumns, (int)newRows);
+    Term_resize( self.cols, self.rows );
     Term_redraw();
     Term_activate( old );
 }
@@ -1465,9 +2171,9 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
        minsize.height = 1;
     }
     minsize.width =
-       minsize.width * self->tileSize.width + self->borderSize.width * 2.0;
+       minsize.width * self.tileSize.width + self.borderSize.width * 2.0;
     minsize.height =
-        minsize.height * self->tileSize.height + self->borderSize.height * 2.0;
+        minsize.height * self.tileSize.height + self.borderSize.height * 2.0;
     [[self makePrimaryWindow] setContentMinSize:minsize];
 }
 
@@ -1486,8 +2192,6 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
                [mutableTerminals replaceObjectAtIndex: termIndex withObject: mutableTerm];
 
                [[NSUserDefaults standardUserDefaults] setValue: mutableTerminals forKey: AngbandTerminalsDefaultsKey];
-               [mutableTerminals release];
-               [mutableTerm release];
        }
 }
 
@@ -1528,7 +2232,7 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
 {
     NSWindow *window = [notification object];
     NSRect contentRect = [window contentRectForFrameRect: [window frame]];
-    [self resizeTerminalWithContentRect: contentRect saveToDefaults: !(self->in_fullscreen_transition)];
+    [self resizeTerminalWithContentRect: contentRect saveToDefaults: !(self->inFullscreenTransition)];
 }
 
 /*- (NSSize)windowWillResize: (NSWindow *)sender toSize: (NSSize)frameSize
@@ -1537,27 +2241,27 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
 
 - (void)windowWillEnterFullScreen: (NSNotification *)notification
 {
-    self->in_fullscreen_transition = YES;
+    self->inFullscreenTransition = YES;
 }
 
 - (void)windowDidEnterFullScreen: (NSNotification *)notification
 {
     NSWindow *window = [notification object];
     NSRect contentRect = [window contentRectForFrameRect: [window frame]];
-    self->in_fullscreen_transition = NO;
+    self->inFullscreenTransition = NO;
     [self resizeTerminalWithContentRect: contentRect saveToDefaults: NO];
 }
 
 - (void)windowWillExitFullScreen: (NSNotification *)notification
 {
-    self->in_fullscreen_transition = YES;
+    self->inFullscreenTransition = YES;
 }
 
 - (void)windowDidExitFullScreen: (NSNotification *)notification
 {
     NSWindow *window = [notification object];
     NSRect contentRect = [window contentRectForFrameRect: [window frame]];
-    self->in_fullscreen_transition = NO;
+    self->inFullscreenTransition = NO;
     [self resizeTerminalWithContentRect: contentRect saveToDefaults: NO];
 }
 
@@ -1565,7 +2269,7 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
 {
     NSWindow *window = [notification object];
 
-    if( window != self->primaryWindow )
+    if( window != self.primaryWindow )
     {
         return;
     }
@@ -1576,7 +2280,8 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
 
     if( [[NSFontPanel sharedFontPanel] isVisible] )
     {
-        [[NSFontPanel sharedFontPanel] setPanelFont: [self selectionFont] isMultiple: NO];
+        [[NSFontPanel sharedFontPanel] setPanelFont:self.angbandViewFont
+                                      isMultiple: NO];
     }
 }
 
@@ -1584,7 +2289,7 @@ static size_t Term_mbcs_cocoa(wchar_t *dest, const char *src, int n)
 {
     NSWindow *window = [notification object];
 
-    if( window != self->primaryWindow )
+    if( window != self.primaryWindow )
     {
         return;
     }
@@ -1712,8 +2417,7 @@ static wchar_t convert_two_byte_eucjp_to_utf16_native(const char *cp)
     NSString* str = [[NSString alloc] initWithBytes:cp length:2
                                      encoding:NSJapaneseEUCStringEncoding];
     wchar_t result = [str characterAtIndex:0];
-
-    [str release];
+    str = nil;
     return result;
 }
 #endif /* JP */
@@ -1730,190 +2434,221 @@ static wchar_t convert_two_byte_eucjp_to_utf16_native(const char *cp)
  */
 static void Term_init_cocoa(term *t)
 {
-    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
-    AngbandContext *context = [[AngbandContext alloc] init];
-    
-    /* Give the term a hard retain on context (for GC) */
-    t->data = (void *)CFRetain(context);
-    [context release];
-    
-    /* Handle graphics */
-    t->higher_pict = !! use_graphics;
-    t->always_pict = FALSE;
-    
-    NSDisableScreenUpdates();
-    
-    /* Figure out the frame autosave name based on the index of this term */
-    NSString *autosaveName = nil;
-    int termIdx;
-    for (termIdx = 0; termIdx < ANGBAND_TERM_MAX; termIdx++)
-    {
-        if (angband_term[termIdx] == t)
-        {
-            autosaveName = [NSString stringWithFormat:@"AngbandTerm-%d", termIdx];
-            break;
-        }
-    }
+    @autoreleasepool {
+       AngbandContext *context = [[AngbandContext alloc] init];
 
-    /* Set its font. */
-    NSString *fontName = [[NSUserDefaults angbandDefaults] stringForKey:[NSString stringWithFormat:@"FontName-%d", termIdx]];
-    if (! fontName) fontName = [default_font fontName];
+       /* Give the term ownership of the context */
+       t->data = (void *)CFBridgingRetain(context);
 
-    /* Use a smaller default font for the other windows, but only if the font
-        * hasn't been explicitly set */
-    float fontSize = (termIdx > 0) ? 10.0 : [default_font pointSize];
-    NSNumber *fontSizeNumber = [[NSUserDefaults angbandDefaults] valueForKey: [NSString stringWithFormat: @"FontSize-%d", termIdx]];
+       /* Handle graphics */
+       t->higher_pict = !! use_graphics;
+       t->always_pict = FALSE;
 
-    if( fontSizeNumber != nil )
-    {
-        fontSize = [fontSizeNumber floatValue];
-    }
+       NSDisableScreenUpdates();
 
-    [context setSelectionFont:[NSFont fontWithName:fontName size:fontSize] adjustTerminal: NO];
+       /*
+        * Figure out the frame autosave name based on the index of this term
+        */
+       NSString *autosaveName = nil;
+       int termIdx;
+       for (termIdx = 0; termIdx < ANGBAND_TERM_MAX; termIdx++)
+       {
+           if (angband_term[termIdx] == t)
+           {
+               autosaveName =
+                   [NSString stringWithFormat:@"AngbandTerm-%d", termIdx];
+               break;
+           }
+       }
 
-    NSArray *terminalDefaults = [[NSUserDefaults standardUserDefaults] valueForKey: AngbandTerminalsDefaultsKey];
-    NSInteger rows = 24;
-    NSInteger columns = 80;
+       /* Set its font. */
+       NSString *fontName =
+           [[NSUserDefaults angbandDefaults]
+               stringForKey:[NSString stringWithFormat:@"FontName-%d", termIdx]];
+       if (! fontName) fontName = [[AngbandContext defaultFont] fontName];
 
-    if( termIdx < (int)[terminalDefaults count] )
-    {
-        NSDictionary *term = [terminalDefaults objectAtIndex: termIdx];
-        NSInteger defaultRows = [[term valueForKey: AngbandTerminalRowsDefaultsKey] integerValue];
-        NSInteger defaultColumns = [[term valueForKey: AngbandTerminalColumnsDefaultsKey] integerValue];
+       /*
+        * Use a smaller default font for the other windows, but only if the
+        * font hasn't been explicitly set.
+        */
+       float fontSize =
+           (termIdx > 0) ? 10.0 : [[AngbandContext defaultFont] pointSize];
+       NSNumber *fontSizeNumber =
+           [[NSUserDefaults angbandDefaults]
+               valueForKey: [NSString stringWithFormat: @"FontSize-%d", termIdx]];
 
-        if (defaultRows > 0) rows = defaultRows;
-        if (defaultColumns > 0) columns = defaultColumns;
-    }
+       if( fontSizeNumber != nil )
+       {
+           fontSize = [fontSizeNumber floatValue];
+       }
 
-    context->cols = columns;
-    context->rows = rows;
+       [context setSelectionFont:[NSFont fontWithName:fontName size:fontSize]
+                adjustTerminal: NO];
 
-    if (resize_pending_changes(context->changes, context->rows) != 0) {
-       destroy_pending_changes(context->changes);
-       context->changes = 0;
-       NSLog(@"initializing terminal %d:  out of memory for pending changes",
-             termIdx);
-    }
+       NSArray *terminalDefaults =
+           [[NSUserDefaults standardUserDefaults]
+               valueForKey: AngbandTerminalsDefaultsKey];
+       NSInteger rows = 24;
+       NSInteger columns = 80;
 
-    /* Get the window */
-    NSWindow *window = [context makePrimaryWindow];
+       if( termIdx < (int)[terminalDefaults count] )
+       {
+           NSDictionary *term = [terminalDefaults objectAtIndex: termIdx];
+           NSInteger defaultRows =
+               [[term valueForKey: AngbandTerminalRowsDefaultsKey]
+                   integerValue];
+           NSInteger defaultColumns =
+               [[term valueForKey: AngbandTerminalColumnsDefaultsKey]
+                   integerValue];
+
+           if (defaultRows > 0) rows = defaultRows;
+           if (defaultColumns > 0) columns = defaultColumns;
+       }
+
+       context.cols = columns;
+       context.rows = rows;
+       [context.changes resize:columns rows:rows];
+
+       /* Get the window */
+       NSWindow *window = [context makePrimaryWindow];
 
-    /* Set its title and, for auxiliary terms, tentative size */
-    NSString *title = [NSString stringWithCString:angband_term_name[termIdx]
+       /* Set its title and, for auxiliary terms, tentative size */
+       NSString *title =
+           [NSString stringWithCString:angband_term_name[termIdx]
 #ifdef JP
-                               encoding:NSJapaneseEUCStringEncoding
+                     encoding:NSJapaneseEUCStringEncoding
 #else
-                               encoding:NSMacOSRomanStringEncoding
+                     encoding:NSMacOSRomanStringEncoding
 #endif
-    ];
-    [window setTitle:title];
-    [context setMinimumWindowSize:termIdx];
-
-    /* If this is the first term, and we support full screen (Mac OS X Lion or
-        * later), then allow it to go full screen (sweet). Allow other terms to be
-        * FullScreenAuxilliary, so they can at least show up. Unfortunately in
-        * Lion they don't get brought to the full screen space; but they would
-        * only make sense on multiple displays anyways so it's not a big loss. */
-    if ([window respondsToSelector:@selector(toggleFullScreen:)])
-    {
-        NSWindowCollectionBehavior behavior = [window collectionBehavior];
-        behavior |= (termIdx == 0 ? Angband_NSWindowCollectionBehaviorFullScreenPrimary : Angband_NSWindowCollectionBehaviorFullScreenAuxiliary);
-        [window setCollectionBehavior:behavior];
-    }
-    
-    /* No Resume support yet, though it would not be hard to add */
-    if ([window respondsToSelector:@selector(setRestorable:)])
-    {
-        [window setRestorable:NO];
-    }
+           ];
+       [window setTitle:title];
+       [context setMinimumWindowSize:termIdx];
+
+       /*
+        * If this is the first term, and we support full screen (Mac OS X Lion
+        * or later), then allow it to go full screen (sweet). Allow other
+        * terms to be FullScreenAuxilliary, so they can at least show up.
+        * Unfortunately in Lion they don't get brought to the full screen
+        * space; but they would only make sense on multiple displays anyways
+        * so it's not a big loss.
+        */
+       if ([window respondsToSelector:@selector(toggleFullScreen:)])
+       {
+           NSWindowCollectionBehavior behavior = [window collectionBehavior];
+           behavior |=
+               (termIdx == 0 ?
+                Angband_NSWindowCollectionBehaviorFullScreenPrimary :
+                Angband_NSWindowCollectionBehaviorFullScreenAuxiliary);
+           [window setCollectionBehavior:behavior];
+       }
+
+       /* No Resume support yet, though it would not be hard to add */
+       if ([window respondsToSelector:@selector(setRestorable:)])
+       {
+           [window setRestorable:NO];
+       }
 
        /* default window placement */ {
-               static NSRect overallBoundingRect;
+           static NSRect overallBoundingRect;
 
-               if( termIdx == 0 )
-               {
-                       /* This is a bit of a trick to allow us to display multiple windows
-                        * in the "standard default" window position in OS X: the upper
-                        * center of the screen.
-                        * The term sizes set in load_prefs() are based on a 5-wide by
-                        * 3-high grid, with the main term being 4/5 wide by 2/3 high
-                        * (hence the scaling to find */
-
-                       /* What the containing rect would be). */
-                       NSRect originalMainTermFrame = [window frame];
-                       NSRect scaledFrame = originalMainTermFrame;
-                       scaledFrame.size.width *= 5.0 / 4.0;
-                       scaledFrame.size.height *= 3.0 / 2.0;
-                       scaledFrame.size.width += 1.0; /* spacing between window columns */
-                       scaledFrame.size.height += 1.0; /* spacing between window rows */
-                       [window setFrame: scaledFrame  display: NO];
-                       [window center];
-                       overallBoundingRect = [window frame];
-                       [window setFrame: originalMainTermFrame display: NO];
-               }
+           if( termIdx == 0 )
+           {
+               /*
+                * This is a bit of a trick to allow us to display multiple
+                * windows in the "standard default" window position in OS X:
+                * the upper center of the screen.  The term sizes set in
+                * AngbandAppDelegate's loadPrefs() are based on a 5-wide by
+                * 3-high grid, with the main term being 4/5 wide by 2/3 high
+                * (hence the scaling to find what the containing rect would
+                * be).
+                */
+               NSRect originalMainTermFrame = [window frame];
+               NSRect scaledFrame = originalMainTermFrame;
+               scaledFrame.size.width *= 5.0 / 4.0;
+               scaledFrame.size.height *= 3.0 / 2.0;
+               scaledFrame.size.width += 1.0; /* spacing between window columns */
+               scaledFrame.size.height += 1.0; /* spacing between window rows */
+               [window setFrame: scaledFrame  display: NO];
+               [window center];
+               overallBoundingRect = [window frame];
+               [window setFrame: originalMainTermFrame display: NO];
+           }
 
-               static NSRect mainTermBaseRect;
-               NSRect windowFrame = [window frame];
+           static NSRect mainTermBaseRect;
+           NSRect windowFrame = [window frame];
 
-               if( termIdx == 0 )
-               {
-                       /* The height and width adjustments were determined experimentally,
-                        * so that the rest of the windows line up nicely without
-                        * overlapping */
-            windowFrame.size.width += 7.0;
-                       windowFrame.size.height += 9.0;
-                       windowFrame.origin.x = NSMinX( overallBoundingRect );
-                       windowFrame.origin.y = NSMaxY( overallBoundingRect ) - NSHeight( windowFrame );
-                       mainTermBaseRect = windowFrame;
-               }
-               else if( termIdx == 1 )
-               {
-                       windowFrame.origin.x = NSMinX( mainTermBaseRect );
-                       windowFrame.origin.y = NSMinY( mainTermBaseRect ) - NSHeight( windowFrame ) - 1.0;
-               }
-               else if( termIdx == 2 )
-               {
-                       windowFrame.origin.x = NSMaxX( mainTermBaseRect ) + 1.0;
-                       windowFrame.origin.y = NSMaxY( mainTermBaseRect ) - NSHeight( windowFrame );
-               }
-               else if( termIdx == 3 )
-               {
-                       windowFrame.origin.x = NSMaxX( mainTermBaseRect ) + 1.0;
-                       windowFrame.origin.y = NSMinY( mainTermBaseRect ) - NSHeight( windowFrame ) - 1.0;
-               }
-               else if( termIdx == 4 )
-               {
-                       windowFrame.origin.x = NSMaxX( mainTermBaseRect ) + 1.0;
-                       windowFrame.origin.y = NSMinY( mainTermBaseRect );
-               }
-               else if( termIdx == 5 )
-               {
-                       windowFrame.origin.x = NSMinX( mainTermBaseRect ) + NSWidth( windowFrame ) + 1.0;
-                       windowFrame.origin.y = NSMinY( mainTermBaseRect ) - NSHeight( windowFrame ) - 1.0;
-               }
+           if( termIdx == 0 )
+           {
+               /*
+                * The height and width adjustments were determined
+                * experimentally, so that the rest of the windows line up
+                * nicely without overlapping.
+                */
+               windowFrame.size.width += 7.0;
+               windowFrame.size.height += 9.0;
+               windowFrame.origin.x = NSMinX( overallBoundingRect );
+               windowFrame.origin.y =
+                   NSMaxY( overallBoundingRect ) - NSHeight( windowFrame );
+               mainTermBaseRect = windowFrame;
+           }
+           else if( termIdx == 1 )
+           {
+               windowFrame.origin.x = NSMinX( mainTermBaseRect );
+               windowFrame.origin.y =
+                   NSMinY( mainTermBaseRect ) - NSHeight( windowFrame ) - 1.0;
+           }
+           else if( termIdx == 2 )
+           {
+               windowFrame.origin.x = NSMaxX( mainTermBaseRect ) + 1.0;
+               windowFrame.origin.y =
+                   NSMaxY( mainTermBaseRect ) - NSHeight( windowFrame );
+           }
+           else if( termIdx == 3 )
+           {
+               windowFrame.origin.x = NSMaxX( mainTermBaseRect ) + 1.0;
+               windowFrame.origin.y =
+                   NSMinY( mainTermBaseRect ) - NSHeight( windowFrame ) - 1.0;
+           }
+           else if( termIdx == 4 )
+           {
+               windowFrame.origin.x = NSMaxX( mainTermBaseRect ) + 1.0;
+               windowFrame.origin.y = NSMinY( mainTermBaseRect );
+           }
+           else if( termIdx == 5 )
+           {
+               windowFrame.origin.x =
+                   NSMinX( mainTermBaseRect ) + NSWidth( windowFrame ) + 1.0;
+               windowFrame.origin.y =
+                   NSMinY( mainTermBaseRect ) - NSHeight( windowFrame ) - 1.0;
+           }
 
-               [window setFrame: windowFrame display: NO];
+           [window setFrame: windowFrame display: NO];
        }
 
        /* Override the default frame above if the user has adjusted windows in
         * the past */
        if (autosaveName) [window setFrameAutosaveName:autosaveName];
 
-    /* Tell it about its term. Do this after we've sized it so that the sizing
-        * doesn't trigger redrawing and such. */
-    [context setTerm:t];
-    
-    /* Only order front if it's the first term. Other terms will be ordered
+       /*
+        * Tell it about its term. Do this after we've sized it so that the
+        * sizing doesn't trigger redrawing and such.
+        */
+       [context setTerm:t];
+
+       /*
+        * Only order front if it's the first term. Other terms will be ordered
         * front from AngbandUpdateWindowVisibility(). This is to work around a
         * problem where Angband aggressively tells us to initialize terms that
-        * don't do anything! */
-    if (t == angband_term[0]) [context->primaryWindow makeKeyAndOrderFront: nil];
-    
-    NSEnableScreenUpdates();
-    
-    /* Set "mapped" flag */
-    t->mapped_flag = true;
-    [pool drain];
+        * don't do anything!
+        */
+       if (t == angband_term[0])
+           [context.primaryWindow makeKeyAndOrderFront: nil];
+
+       NSEnableScreenUpdates();
+
+       /* Set "mapped" flag */
+       t->mapped_flag = true;
+    }
 }
 
 
@@ -1923,22 +2658,20 @@ static void Term_init_cocoa(term *t)
  */
 static void Term_nuke_cocoa(term *t)
 {
-    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
-    
-    AngbandContext *context = t->data;
-    if (context)
-    {
-        /* Tell the context to get rid of its windows, etc. */
-        [context dispose];
-        
-        /* Balance our CFRetain from when we created it */
-        CFRelease(context);
-        
-        /* Done with it */
-        t->data = NULL;
+    @autoreleasepool {
+        AngbandContext *context = (__bridge AngbandContext*) (t->data);
+       if (context)
+       {
+           /* Tell the context to get rid of its windows, etc. */
+           [context dispose];
+
+           /* Balance our CFBridgingRetain from when we created it */
+           CFRelease(t->data);
+
+           /* Done with it */
+           t->data = NULL;
+       }
     }
-    
-    [pool drain];
 }
 
 /**
@@ -1964,8 +2697,6 @@ static CGImageRef create_angband_image(NSString *path)
                 decodedImage = CGImageSourceCreateImageAtIndex(source, 0, (CFDictionaryRef)options);
                 CFRelease(source);
             }
-            [options release];
-            [url release];
         }
     }
     
@@ -2017,102 +2748,108 @@ static errr Term_xtra_cocoa_react(void)
     /* Don't actually switch graphics until the game is running */
     if (!initialized || !game_in_progress) return (-1);
 
-    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
-    AngbandContext *angbandContext = Term->data;
+    @autoreleasepool {
+       AngbandContext *angbandContext =
+           (__bridge AngbandContext*) (Term->data);
 
-    /* Handle graphics */
-    int expected_graf_mode = (current_graphics_mode) ?
-       current_graphics_mode->grafID : GRAPHICS_NONE;
-    if (graf_mode_req != expected_graf_mode)
-    {
-        graphics_mode *new_mode;
-       if (graf_mode_req != GRAPHICS_NONE) {
-           new_mode = get_graphics_mode(graf_mode_req);
-       } else {
-           new_mode = NULL;
-        }
-        
-        /* Get rid of the old image. CGImageRelease is NULL-safe. */
-        CGImageRelease(pict_image);
-        pict_image = NULL;
-        
-        /* Try creating the image if we want one */
-        if (new_mode != NULL)
-        {
-            NSString *img_path = [NSString stringWithFormat:@"%s/%s", new_mode->path, new_mode->file];
-            pict_image = create_angband_image(img_path);
-
-            /* If we failed to create the image, revert to ASCII. */
-            if (! pict_image) {
-                new_mode = NULL;
-               if (use_bigtile) {
-                   arg_bigtile = FALSE;
+       /* Handle graphics */
+       int expected_graf_mode = (current_graphics_mode) ?
+           current_graphics_mode->grafID : GRAPHICS_NONE;
+       if (graf_mode_req != expected_graf_mode)
+       {
+           graphics_mode *new_mode;
+           if (graf_mode_req != GRAPHICS_NONE) {
+               new_mode = get_graphics_mode(graf_mode_req);
+           } else {
+               new_mode = NULL;
+           }
+
+           /* Get rid of the old image. CGImageRelease is NULL-safe. */
+           CGImageRelease(pict_image);
+           pict_image = NULL;
+
+           /* Try creating the image if we want one */
+           if (new_mode != NULL)
+           {
+               NSString *img_path =
+                   [NSString stringWithFormat:@"%s/%s", new_mode->path, new_mode->file];
+               pict_image = create_angband_image(img_path);
+
+               /* If we failed to create the image, revert to ASCII. */
+               if (! pict_image) {
+                   new_mode = NULL;
+                   if (use_bigtile) {
+                       arg_bigtile = FALSE;
+                   }
+                   [[NSUserDefaults angbandDefaults]
+                       setInteger:GRAPHICS_NONE
+                       forKey:AngbandGraphicsDefaultsKey];
+                   [[NSUserDefaults angbandDefaults] synchronize];
+
+                   NSString *msg = NSLocalizedStringWithDefaultValue(
+                       @"Error.TileSetLoadFailed",
+                       AngbandMessageCatalog,
+                       [NSBundle mainBundle],
+                       @"Failed to Load Tile Set",
+                       @"Alert text for failed tile set load");
+                   NSString *info = NSLocalizedStringWithDefaultValue(
+                       @"Error.TileSetRevertToASCII",
+                       AngbandMessageCatalog,
+                       [NSBundle mainBundle],
+                       @"Could not load the tile set.  Switched back to ASCII.",
+                       @"Alert informative message for failed tile set load");
+                   NSAlert *alert = [[NSAlert alloc] init];
+
+                   alert.messageText = msg;
+                   alert.informativeText = info;
+                   NSModalResponse result = [alert runModal];
                }
-               [[NSUserDefaults angbandDefaults]
-                   setInteger:GRAPHICS_NONE
-                   forKey:AngbandGraphicsDefaultsKey];
-               [[NSUserDefaults angbandDefaults] synchronize];
-
-               NSString *msg = NSLocalizedStringWithDefaultValue(
-                   @"Error.TileSetLoadFailed",
-                   AngbandMessageCatalog,
-                   [NSBundle mainBundle],
-                   @"Failed to Load Tile Set",
-                   @"Alert text for failed tile set load");
-               NSString *info = NSLocalizedStringWithDefaultValue(
-                   @"Error.TileSetRevertToASCII",
-                   AngbandMessageCatalog,
-                   [NSBundle mainBundle],
-                   @"Could not load the tile set.  Switched back to ASCII.",
-                   @"Alert informative message for failed tile set load");
-               NSAlert *alert = [[NSAlert alloc] init];
-
-               alert.messageText = msg;
-               alert.informativeText = info;
-               NSModalResponse result = [alert runModal];
-               [alert release];
            }
-        }
-        
-        /* Record what we did */
-        use_graphics = new_mode ? new_mode->grafID : 0;
-        ANGBAND_GRAF = (new_mode ? new_mode->graf : "ascii");
-        current_graphics_mode = new_mode;
-        
-        /* Enable or disable higher picts. Note: this should be done for all
-                * terms. */
-        angbandContext->terminal->higher_pict = !! use_graphics;
-        
-        if (pict_image && current_graphics_mode)
-        {
-            /* Compute the row and column count via the image height and width.
-                        */
-            pict_rows = (int)(CGImageGetHeight(pict_image) / current_graphics_mode->cell_height);
-            pict_cols = (int)(CGImageGetWidth(pict_image) / current_graphics_mode->cell_width);
-        }
-        else
-        {
-            pict_rows = 0;
-            pict_cols = 0;
-        }
-        
-        /* Reset visuals */
-        if (arg_bigtile == use_bigtile)
-        {
-            reset_visuals();
-        }
-    }
 
-    if (arg_bigtile != use_bigtile) {
-       /* Reset visuals */
-       reset_visuals();
+           /* Record what we did */
+           use_graphics = new_mode ? new_mode->grafID : 0;
+           ANGBAND_GRAF = (new_mode ? new_mode->graf : "ascii");
+           current_graphics_mode = new_mode;
+
+           /*
+            * Enable or disable higher picts. Note: this should be done for
+            * all terms.
+            */
+           angbandContext->terminal->higher_pict = !! use_graphics;
+
+           if (pict_image && current_graphics_mode)
+           {
+               /*
+                * Compute the row and column count via the image height and
+                * width.
+                */
+               pict_rows = (int)(CGImageGetHeight(pict_image) /
+                                 current_graphics_mode->cell_height);
+               pict_cols = (int)(CGImageGetWidth(pict_image) /
+                                 current_graphics_mode->cell_width);
+           }
+           else
+           {
+               pict_rows = 0;
+               pict_cols = 0;
+           }
+
+           /* Reset visuals */
+           if (arg_bigtile == use_bigtile)
+           {
+               reset_visuals();
+           }
+       }
+
+       if (arg_bigtile != use_bigtile) {
+           /* Reset visuals */
+           reset_visuals();
 
-       Term_activate(angband_term[0]);
-       Term_resize(angband_term[0]->wid, angband_term[0]->hgt);
+           Term_activate(angband_term[0]);
+           Term_resize(angband_term[0]->wid, angband_term[0]->hgt);
+       }
     }
 
-    [pool drain];
-    
     /* Success */
     return (0);
 }
@@ -2154,7 +2891,7 @@ static void draw_image_tile(
  * extended.
  */
 static void query_before_text(
-    struct PendingRowChange* prc, int iy, int npre, int* pclip, int* prend)
+    PendingTermChanges *tc, int iy, int npre, int* pclip, int* prend)
 {
     int start = *prend;
     int i = start - 1;
@@ -2163,15 +2900,16 @@ static void query_before_text(
        if (i < 0 || i < start - npre) {
            break;
        }
+       enum PendingCellChangeType ctype = [tc getCellChangeType:i row:iy];
 
-       if (prc->cell_changes[i].change_type == CELL_CHANGE_PICT) {
+       if (ctype == CELL_CHANGE_TILE) {
            /*
             * The cell has been rendered with a tile.  Do not want to modify
             * its contents so the clipping and rendering region can not be
             * extended.
             */
            break;
-       } else if (prc->cell_changes[i].change_type == CELL_CHANGE_NONE) {
+       } else if (ctype == CELL_CHANGE_NONE) {
            /*
             * It has not changed (or using big tile mode and it is within
             * a changed tile but is not the left cell for that tile) so
@@ -2209,34 +2947,27 @@ static void query_before_text(
            if (i > 0) {
                Term_what(i - 1, iy, a, c);
                if (iskanji(c)) {
-                   prc->cell_changes[i - 1].c.w =
-                       convert_two_byte_eucjp_to_utf16_native(c);
-                   prc->cell_changes[i - 1].a = a[0];
-                   prc->cell_changes[i - 1].tcol = 1;
-                   prc->cell_changes[i].c.w = 0;
-                   prc->cell_changes[i].a = a[0];
-                   prc->cell_changes[i].tcol = 0;
+                   [tc markTextChange:i-1 row:iy
+                       glyph:convert_two_byte_eucjp_to_utf16_native(c)
+                       color:a[0] isDoubleWidth:YES];
                    *pclip = i - 1;
                    *prend = i - 1;
                    --i;
                } else {
-                   prc->cell_changes[i].c.w = c[1];
-                   prc->cell_changes[i].a = a[1];
-                   prc->cell_changes[i].tcol = 0;
+                   [tc markTextChange:i row:iy
+                       glyph:c[1] color:a[1] isDoubleWidth:NO];
                    *pclip = i;
                    *prend = i;
                }
            } else {
-               prc->cell_changes[i].c.w = c[1];
-               prc->cell_changes[i].a = a[1];
-               prc->cell_changes[i].tcol = 0;
+               [tc markTextChange:i row:iy
+                   glyph:c[1] color:a[1] isDoubleWidth:NO];
                *pclip = i;
                *prend = i;
            }
 #else
-           prc->cell_changes[i].c.w = c[1];
-           prc->cell_changes[i].a = a[1];
-           prc->cell_changes[i].tcol = 0;
+           [tc markTextChange:i row:iy
+               glyph:c[1] color:a[1] isDoubleWidth:NO];
            *pclip = i;
            *prend = i;
 #endif
@@ -2259,39 +2990,39 @@ static void query_before_text(
  * extended.
  */
 static void query_after_text(
-    struct PendingRowChange* prc,
-    int iy,
-    int ncol,
-    int npost,
-    int* pclip,
-    int* prend)
+    PendingTermChanges *tc, int iy, int npost, int* pclip, int* prend)
 {
     int end = *prend;
     int i = end + 1;
+    int ncol = tc.columnCount;
 
     while (1) {
+       if (i >= ncol) {
+           break;
+       }
+
+       enum PendingCellChangeType ctype = [tc getCellChangeType:i row:iy];
+
        /*
         * Be willing to consolidate this block with the one after it.  This
         * logic should be sufficient to avoid redraws of the region between
-        * changed blocks of text if angbandContext->ncol_pre is zero or one.
-        * For larger values of ncol_pre, would need to do something more to
+        * changed blocks of text if angbandContext.nColPre is zero or one.
+        * For larger values of nColPre, would need to do something more to
         * avoid extra redraws.
         */
-       if (i >= ncol ||
-           (i > end + npost &&
-            prc->cell_changes[i].change_type != CELL_CHANGE_TEXT &&
-            prc->cell_changes[i].change_type != CELL_CHANGE_WIPE)) {
+       if (i > end + npost && ctype != CELL_CHANGE_TEXT &&
+           ctype != CELL_CHANGE_WIPE) {
            break;
        }
 
-       if (prc->cell_changes[i].change_type == CELL_CHANGE_PICT) {
+       if (ctype == CELL_CHANGE_TILE) {
            /*
             * The cell has been rendered with a tile.  Do not want to modify
             * its contents so the clipping and rendering region can not be
             * extended.
             */
            break;
-       } else if (prc->cell_changes[i].change_type == CELL_CHANGE_NONE) {
+       } else if (ctype == CELL_CHANGE_NONE) {
            /* It has not changed so inquire what it is. */
            TERM_COLOR a[2];
            char c[2];
@@ -2314,34 +3045,27 @@ static void query_after_text(
            if (i < ncol - 1) {
                Term_what(i + 1, iy, a + 1, c + 1);
                if (iskanji(c)) {
-                   prc->cell_changes[i].c.w =
-                       convert_two_byte_eucjp_to_utf16_native(c);
-                   prc->cell_changes[i].a = a[0];
-                   prc->cell_changes[i].tcol = 1;
-                   prc->cell_changes[i + 1].c.w = 0;
-                   prc->cell_changes[i + 1].a = a[0];
-                   prc->cell_changes[i + 1].tcol = 0;
+                   [tc markTextChange:i row:iy
+                       glyph:convert_two_byte_eucjp_to_utf16_native(c)
+                       color:a[0] isDoubleWidth:YES];
                    *pclip = i + 1;
                    *prend = i + 1;
                    ++i;
                } else {
-                   prc->cell_changes[i].c.w = c[0];
-                   prc->cell_changes[i].a = a[0];
-                   prc->cell_changes[i].tcol = 0;
+                   [tc markTextChange:i row:iy
+                       glyph:c[0] color:a[0] isDoubleWidth:NO];
                    *pclip = i;
                    *prend = i;
                }
            } else {
-               prc->cell_changes[i].c.w = c[0];
-               prc->cell_changes[i].a = a[0];
-               prc->cell_changes[i].tcol = 0;
+               [tc markTextChange:i row:iy
+                   glyph:c[0] color:a[0] isDoubleWidth:NO];
                *pclip = i;
                *prend = i;
            }
 #else
-           prc->cell_changes[i].c.w = c[0];
-           prc->cell_changes[i].a = a[0];
-           prc->cell_changes[i].tcol = 0;
+           [tc markTextChange:i row:iy
+               glyph:c[0] color:a[0] isDoubleWidth:NO];
            *pclip = i;
            *prend = i;
 #endif
@@ -2367,7 +3091,7 @@ static void Term_xtra_cocoa_fresh(AngbandContext* angbandContext)
 {
     int graf_width, graf_height, alphablend;
 
-    if (angbandContext->changes->has_pict) {
+    if (angbandContext.changes.hasTileChanges) {
        CGImageAlphaInfo ainfo = CGImageGetAlphaInfo(pict_image);
 
        graf_width = current_graphics_mode->cell_width;
@@ -2392,38 +3116,36 @@ static void Term_xtra_cocoa_fresh(AngbandContext* angbandContext)
 
     CGContextRef ctx = [angbandContext lockFocus];
 
-    if (angbandContext->changes->has_text ||
-       angbandContext->changes->has_wipe) {
-       NSFont *selectionFont = [[angbandContext selectionFont] screenFont];
+    if (angbandContext.changes.hasTextChanges ||
+       angbandContext.changes.hasWipeChanges) {
+       NSFont *selectionFont = [angbandContext.angbandViewFont screenFont];
        [selectionFont set];
     }
 
-    int iy;
-    for (iy = angbandContext->changes->ymin;
-        iy <= angbandContext->changes->ymax;
+    for (int iy = angbandContext.changes.firstChangedRow;
+        iy <= angbandContext.changes.lastChangedRow;
         ++iy) {
-       struct PendingRowChange* prc = angbandContext->changes->rows[iy];
-       int ix;
-
        /* Skip untouched rows. */
-       if (prc == 0) {
+       if ([angbandContext.changes getFirstChangedColumnInRow:iy] >
+           [angbandContext.changes getLastChangedColumnInRow:iy]) {
            continue;
        }
+       int ix = [angbandContext.changes getFirstChangedColumnInRow:iy];
+       int ixmax = [angbandContext.changes getLastChangedColumnInRow:iy];
 
-       ix = prc->xmin;
        while (1) {
            int jx;
 
-           if (ix > prc->xmax) {
+           if (ix > ixmax) {
                break;
            }
 
-           switch (prc->cell_changes[ix].change_type) {
+           switch ([angbandContext.changes getCellChangeType:ix row:iy]) {
            case CELL_CHANGE_NONE:
                ++ix;
                break;
 
-           case CELL_CHANGE_PICT:
+           case CELL_CHANGE_TILE:
                {
                    /*
                     * Because changes are made to the compositing mode, save
@@ -2435,24 +3157,24 @@ static void Term_xtra_cocoa_fresh(AngbandContext* angbandContext)
                    int step = (use_bigtile) ? 2 : 1;
 
                    jx = ix;
-                   while (jx <= prc->xmax &&
-                          prc->cell_changes[jx].change_type
-                          == CELL_CHANGE_PICT) {
+                   while (jx <= ixmax &&
+                          [angbandContext.changes getCellChangeType:jx row:iy]
+                          == CELL_CHANGE_TILE) {
                        NSRect destinationRect =
                            [angbandContext rectInImageForTileAtX:jx Y:iy];
+                       struct PendingTileChange tileIndices =
+                           [angbandContext.changes
+                                          getCellTileChange:jx row:iy];
                        NSRect sourceRect, terrainRect;
 
                        destinationRect.size.width *= step;
-                       sourceRect.origin.x = graf_width *
-                           prc->cell_changes[jx].c.c;
-                       sourceRect.origin.y = graf_height *
-                           prc->cell_changes[jx].a;
+                       sourceRect.origin.x = graf_width * tileIndices.fgdCol;
+                       sourceRect.origin.y = graf_height * tileIndices.fgdRow;
                        sourceRect.size.width = graf_width;
                        sourceRect.size.height = graf_height;
-                       terrainRect.origin.x = graf_width *
-                           prc->cell_changes[jx].tcol;
+                       terrainRect.origin.x = graf_width * tileIndices.bckCol;
                        terrainRect.origin.y = graf_height *
-                           prc->cell_changes[jx].trow;
+                           tileIndices.bckRow;
                        terrainRect.size.width = graf_width;
                        terrainRect.size.height = graf_height;
                        if (alphablend) {
@@ -2494,7 +3216,7 @@ static void Term_xtra_cocoa_fresh(AngbandContext* angbandContext)
                    NSRect rect =
                        [angbandContext rectInImageForTileAtX:ix Y:iy];
                    rect.size.width =
-                       angbandContext->tileSize.width * (jx - ix);
+                       angbandContext.tileSize.width * (jx - ix);
                    [angbandContext setNeedsDisplayInBaseRect:rect];
                }
                ix = jx;
@@ -2508,11 +3230,16 @@ static void Term_xtra_cocoa_fresh(AngbandContext* angbandContext)
                 * neighboring unchanged text).
                 */
                jx = ix + 1;
-               while (jx < angbandContext->cols &&
-                      (prc->cell_changes[jx].change_type
-                       == CELL_CHANGE_TEXT
-                       || prc->cell_changes[jx].change_type
-                       == CELL_CHANGE_WIPE)) {
+               while (1) {
+                   if (jx >= angbandContext.cols) {
+                       break;
+                   }
+                   enum PendingCellChangeType ctype =
+                       [angbandContext.changes getCellChangeType:jx row:iy];
+                   if (ctype != CELL_CHANGE_TEXT &&
+                       ctype != CELL_CHANGE_WIPE) {
+                       break;
+                   }
                    ++jx;
                }
                {
@@ -2526,12 +3253,15 @@ static void Term_xtra_cocoa_fresh(AngbandContext* angbandContext)
                    int k;
 
                    query_before_text(
-                       prc, iy, angbandContext->ncol_pre, &isclip, &isrend);
+                       angbandContext.changes,
+                       iy,
+                       angbandContext.nColPre,
+                       &isclip,
+                       &isrend);
                    query_after_text(
-                       prc,
+                       angbandContext.changes,
                        iy,
-                       angbandContext->cols,
-                       angbandContext->ncol_post,
+                       angbandContext.nColPost,
                        &ieclip,
                        &ierend
                    );
@@ -2542,7 +3272,7 @@ static void Term_xtra_cocoa_fresh(AngbandContext* angbandContext)
 
                    /* Clear the area where rendering will be done. */
                    r = [angbandContext rectInImageForTileAtX:isrend Y:iy];
-                   r.size.width = angbandContext->tileSize.width *
+                   r.size.width = angbandContext.tileSize.width *
                        (ierend - isrend + 1);
                    [[NSColor blackColor] set];
                    NSRectFill(r);
@@ -2557,37 +3287,39 @@ static void Term_xtra_cocoa_fresh(AngbandContext* angbandContext)
                     */
                    CGContextBeginPath(ctx);
                    r = [angbandContext rectInImageForTileAtX:isclip Y:iy];
-                   r.size.width = angbandContext->tileSize.width *
+                   r.size.width = angbandContext.tileSize.width *
                        (ieclip - isclip + 1);
                    CGContextClipToRect(ctx, r);
 
                    /* Render. */
                    k = isrend;
                    while (k <= ierend) {
-                       NSRect rectToDraw;
-
-                       if (prc->cell_changes[k].change_type
+                       if ([angbandContext.changes getCellChangeType:k row:iy]
                            == CELL_CHANGE_WIPE) {
                            /* Skip over since no rendering is necessary. */
                            ++k;
                            continue;
                        }
 
-                       if (set_color || alast != prc->cell_changes[k].a) {
+                       struct PendingTextChange textChange =
+                           [angbandContext.changes getCellTextChange:k
+                                          row:iy];
+                       int anew = textChange.color % MAX_COLORS;
+                       if (set_color || alast != anew) {
                            set_color = 0;
-                           alast = prc->cell_changes[k].a;
-                           set_color_for_index(alast % MAX_COLORS);
+                           alast = anew;
+                           set_color_for_index(anew);
                        }
 
-                       rectToDraw =
+                       NSRect rectToDraw =
                            [angbandContext rectInImageForTileAtX:k Y:iy];
-                       if (prc->cell_changes[k].tcol) {
+                       if (textChange.doubleWidth) {
                            rectToDraw.size.width *= 2.0;
-                           [angbandContext drawWChar:prc->cell_changes[k].c.w
+                           [angbandContext drawWChar:textChange.glyph
                                            inRect:rectToDraw context:ctx];
                            k += 2;
                        } else {
-                           [angbandContext drawWChar:prc->cell_changes[k].c.w
+                           [angbandContext drawWChar:textChange.glyph
                                            inRect:rectToDraw context:ctx];
                            ++k;
                        }
@@ -2606,15 +3338,14 @@ static void Term_xtra_cocoa_fresh(AngbandContext* angbandContext)
        }
     }
 
-    if (angbandContext->changes->xcurs >= 0 &&
-       angbandContext->changes->ycurs >= 0) {
+    if (angbandContext.changes.cursorColumn >= 0 &&
+       angbandContext.changes.cursorRow >= 0) {
        NSRect rect = [angbandContext
-                         rectInImageForTileAtX:angbandContext->changes->xcurs
-                         Y:angbandContext->changes->ycurs];
+                         rectInImageForTileAtX:angbandContext.changes.cursorColumn
+                         Y:angbandContext.changes.cursorRow];
 
-       if (angbandContext->changes->bigcurs) {
-           rect.size.width += angbandContext->tileSize.width;
-       }
+       rect.size.width *= angbandContext.changes.cursorWidth;
+       rect.size.height *= angbandContext.changes.cursorHeight;
        [[NSColor yellowColor] set];
        NSFrameRectWithWidth(rect, 1);
        /* Invalidate that rect */
@@ -2630,147 +3361,114 @@ static void Term_xtra_cocoa_fresh(AngbandContext* angbandContext)
  */
 static errr Term_xtra_cocoa(int n, int v)
 {
-    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
-    AngbandContext* angbandContext = Term->data;
-    
     errr result = 0;
-    
-    /* Analyze */
-    switch (n)
-    {
-               /* Make a noise */
+    @autoreleasepool {
+       AngbandContext* angbandContext =
+           (__bridge AngbandContext*) (Term->data);
+
+       /* Analyze */
+       switch (n) {
+           /* Make a noise */
         case TERM_XTRA_NOISE:
-        {
-            NSBeep();
-            
-            /* Success */
-            break;
-        }
+           NSBeep();
+           break;
 
-       /*  Make a sound */
+           /*  Make a sound */
         case TERM_XTRA_SOUND:
            play_sound(v);
            break;
 
-            /* Process random events */
+           /* Process random events */
         case TERM_XTRA_BORED:
-        {
-            /* Show or hide cocoa windows based on the subwindow flags set by
-                        * the user */
-            AngbandUpdateWindowVisibility();
+           /*
+            * Show or hide cocoa windows based on the subwindow flags set by
+            * the user.
+            */
+           AngbandUpdateWindowVisibility();
+           /* Process an event */
+           (void)check_events(CHECK_EVENTS_NO_WAIT);
+           break;
 
-            /* Process an event */
-            (void)check_events(CHECK_EVENTS_NO_WAIT);
-            
-            /* Success */
-            break;
-        }
-            
-               /* Process pending events */
+           /* Process pending events */
         case TERM_XTRA_EVENT:
-        {
-            /* Process an event */
-            (void)check_events(v);
-            
-            /* Success */
-            break;
-        }
-            
-               /* Flush all pending events (if any) */
+           /* Process an event */
+           (void)check_events(v);
+           break;
+
+           /* Flush all pending events (if any) */
         case TERM_XTRA_FLUSH:
-        {
-            /* Hack -- flush all events */
-            while (check_events(CHECK_EVENTS_DRAIN)) /* loop */;
-            
-            /* Success */
-            break;
-        }
-            
-               /* Hack -- Change the "soft level" */
+           /* Hack -- flush all events */
+           while (check_events(CHECK_EVENTS_DRAIN)) /* loop */;
+
+           break;
+
+           /* Hack -- Change the "soft level" */
         case TERM_XTRA_LEVEL:
-        {
-            /* Here we could activate (if requested), but I don't think Angband
-                        * should be telling us our window order (the user should decide
-                        * that), so do nothing. */            
-            break;
-        }
-            
-               /* Clear the screen */
+           /*
+            * Here we could activate (if requested), but I don't think
+            * Angband should be telling us our window order (the user
+            * should decide that), so do nothing.
+            */
+           break;
+
+           /* Clear the screen */
         case TERM_XTRA_CLEAR:
-        {        
-            [angbandContext lockFocus];
-            [[NSColor blackColor] set];
-            NSRect imageRect = {NSZeroPoint, [angbandContext imageSize]};
-            NSRectFillUsingOperation(imageRect, NSCompositeCopy);
-            [angbandContext unlockFocus];
-            [angbandContext setNeedsDisplay:YES];
-            /* Success */
-            break;
-        }
-            
-               /* React to changes */
+           {
+               [angbandContext lockFocus];
+               [[NSColor blackColor] set];
+               NSRect imageRect = {NSZeroPoint, [angbandContext imageSize]};
+               NSRectFillUsingOperation(imageRect, NSCompositeCopy);
+               [angbandContext unlockFocus];
+               [angbandContext setNeedsDisplay:YES];
+               /* Success */
+               break;
+           }
+
+           /* React to changes */
         case TERM_XTRA_REACT:
-        {
-            /* React to changes */
-            return (Term_xtra_cocoa_react());
-        }
-            
-               /* Delay (milliseconds) */
+           result = Term_xtra_cocoa_react();
+           break;
+
+           /* Delay (milliseconds) */
         case TERM_XTRA_DELAY:
-        {
-            /* If needed */
-            if (v > 0)
-            {
-                
-                double seconds = v / 1000.;
-                NSDate* date = [NSDate dateWithTimeIntervalSinceNow:seconds];
-                do
-                {
-                    NSEvent* event;
-                    do
-                    {
-                        event = [NSApp nextEventMatchingMask:-1 untilDate:date inMode:NSDefaultRunLoopMode dequeue:YES];
-                        if (event) send_event(event);
-                    } while (event);
-                } while ([date timeIntervalSinceNow] >= 0);
-                
-            }
-            
-            /* Success */
-            break;
-        }
-            
-        case TERM_XTRA_FRESH:
-           /* Draw the pending changes. */
-           if (angbandContext->changes != 0) {
-               Term_xtra_cocoa_fresh(angbandContext);
-               clear_pending_changes(angbandContext->changes);
+           /* If needed */
+           if (v > 0) {
+               double seconds = v / 1000.;
+               NSDate* date = [NSDate dateWithTimeIntervalSinceNow:seconds];
+               do {
+                   NSEvent* event;
+                   do {
+                       event = [NSApp nextEventMatchingMask:-1
+                                      untilDate:date
+                                      inMode:NSDefaultRunLoopMode
+                                      dequeue:YES];
+                       if (event) send_event(event);
+                   } while (event);
+               } while ([date timeIntervalSinceNow] >= 0);
            }
+           break;
+
+           /* Draw the pending changes. */
+        case TERM_XTRA_FRESH:
+           Term_xtra_cocoa_fresh(angbandContext);
+           [angbandContext.changes clear];
             break;
-            
+
         default:
             /* Oops */
             result = 1;
             break;
+       }
     }
-    
-    [pool drain];
-    
-    /* Oops */
+
     return result;
 }
 
 static errr Term_curs_cocoa(TERM_LEN x, TERM_LEN y)
 {
-    AngbandContext *angbandContext = Term->data;
+    AngbandContext *angbandContext = (__bridge AngbandContext*) (Term->data);
 
-    if (angbandContext->changes == 0) {
-       /* Bail out; there was an earlier memory allocation failure. */
-       return 1;
-    }
-    angbandContext->changes->xcurs = x;
-    angbandContext->changes->ycurs = y;
-    angbandContext->changes->bigcurs = 0;
+    [angbandContext.changes markCursor:x row:y];
 
     /* Success */
     return 0;
@@ -2783,15 +3481,9 @@ static errr Term_curs_cocoa(TERM_LEN x, TERM_LEN y)
  */
 static errr Term_bigcurs_cocoa(TERM_LEN x, TERM_LEN y)
 {
-    AngbandContext *angbandContext = Term->data;
+    AngbandContext *angbandContext = (__bridge AngbandContext*) (Term->data);
 
-    if (angbandContext->changes == 0) {
-       /* Bail out; there was an earlier memory allocation failure. */
-       return 1;
-    }
-    angbandContext->changes->xcurs = x;
-    angbandContext->changes->ycurs = y;
-    angbandContext->changes->bigcurs = 1;
+    [angbandContext.changes markBigCursor:x row:y cellsWide:2 cellsHigh:1];
 
     /* Success */
     return 0;
@@ -2803,110 +3495,45 @@ static errr Term_bigcurs_cocoa(TERM_LEN x, TERM_LEN y)
  * Erase "n" characters starting at (x,y)
  */
 static errr Term_wipe_cocoa(TERM_LEN x, TERM_LEN y, int n)
-{
-    AngbandContext *angbandContext = Term->data;
-    struct PendingCellChange *pc;
-
-    if (angbandContext->changes == 0) {
-       /* Bail out; there was an earlier memory allocation failure. */
-       return 1;
-    }
-    if (angbandContext->changes->rows[y] == 0) {
-       angbandContext->changes->rows[y] =
-           create_row_change(angbandContext->cols);
-       if (angbandContext->changes->rows[y] == 0) {
-           NSLog(@"failed to allocate changes for row %d", y);
-           return 1;
-       }
-       if (angbandContext->changes->ymin > y) {
-           angbandContext->changes->ymin = y;
-       }
-       if (angbandContext->changes->ymax < y) {
-           angbandContext->changes->ymax = y;
-       }
-    }
-
-    angbandContext->changes->has_wipe = 1;
-    if (angbandContext->changes->rows[y]->xmin > x) {
-       angbandContext->changes->rows[y]->xmin = x;
-    }
-    if (angbandContext->changes->rows[y]->xmax < x + n - 1) {
-       angbandContext->changes->rows[y]->xmax = x + n - 1;
-    }
-    for (pc = angbandContext->changes->rows[y]->cell_changes + x;
-        pc != angbandContext->changes->rows[y]->cell_changes + x + n;
-        ++pc) {
-       pc->change_type = CELL_CHANGE_WIPE;
-    }
-    
+{
+    AngbandContext *angbandContext = (__bridge AngbandContext*) (Term->data);
+
+    [angbandContext.changes markWipeRange:x row:y n:n];
+
     /* Success */
-    return (0);
+    return 0;
 }
 
 static errr Term_pict_cocoa(TERM_LEN x, TERM_LEN y, int n,
                            TERM_COLOR *ap, concptr cp,
                            const TERM_COLOR *tap, concptr tcp)
 {
-    
     /* Paranoia: Bail if we don't have a current graphics mode */
     if (! current_graphics_mode) return -1;
-    
-    AngbandContext* angbandContext = Term->data;
-    int any_change = 0;
+
+    AngbandContext* angbandContext = (__bridge AngbandContext*) (Term->data);
     int step = (use_bigtile) ? 2 : 1;
-    struct PendingCellChange *pc;
 
-    if (angbandContext->changes == 0) {
-       /* Bail out; there was an earlier memory allocation failure. */
-       return 1;
-    }
     /*
      * In bigtile mode, it is sufficient that the bounds for the modified
      * region only encompass the left cell for the region affected by the
      * tile and that only that cell has to have the details of the changes.
      */
-    if (angbandContext->changes->rows[y] == 0) {
-       angbandContext->changes->rows[y] =
-           create_row_change(angbandContext->cols);
-       if (angbandContext->changes->rows[y] == 0) {
-           NSLog(@"failed to allocate changes for row %d", y);
-           return 1;
-       }
-       if (angbandContext->changes->ymin > y) {
-           angbandContext->changes->ymin = y;
-       }
-       if (angbandContext->changes->ymax < y) {
-           angbandContext->changes->ymax = y;
-       }
-    }
-
-    if (angbandContext->changes->rows[y]->xmin > x) {
-       angbandContext->changes->rows[y]->xmin = x;
-    }
-    if (angbandContext->changes->rows[y]->xmax < x + step * (n - 1)) {
-       angbandContext->changes->rows[y]->xmax = x + step * (n - 1);
-    }
-    for (pc = angbandContext->changes->rows[y]->cell_changes + x;
-        pc != angbandContext->changes->rows[y]->cell_changes + x + step * n;
-        pc += step) {
+    for (int i = x; i < x + n * step; i += step) {
        TERM_COLOR a = *ap++;
        char c = *cp++;
        TERM_COLOR ta = *tap++;
        char tc = *tcp++;
 
        if (use_graphics && (a & 0x80) && (c & 0x80)) {
-           pc->c.c = ((byte)c & 0x7F) % pict_cols;
-           pc->a = ((byte)a & 0x7F) % pict_rows;
-           pc->tcol = ((byte)tc & 0x7F) % pict_cols;
-           pc->trow = ((byte)ta & 0x7F) % pict_rows;
-           pc->change_type = CELL_CHANGE_PICT;
-           any_change = 1;
+           [angbandContext.changes markTileChange:i row:y
+                          foregroundCol:((byte)c & 0x7F) % pict_cols
+                          foregroundRow:((byte)a & 0x7F) % pict_rows
+                          backgroundCol:((byte)tc & 0x7F) % pict_cols
+                          backgroundRow:((byte)ta & 0x7F) % pict_rows];
        }
     }
-    if (any_change) {
-       angbandContext->changes->has_pict = 1;
-    }
-    
+
     /* Success */
     return (0);
 }
@@ -2919,484 +3546,54 @@ static errr Term_pict_cocoa(TERM_LEN x, TERM_LEN y, int n,
 static errr Term_text_cocoa(
     TERM_LEN x, TERM_LEN y, int n, TERM_COLOR a, concptr cp)
 {
-    AngbandContext* angbandContext = Term->data;
-    struct PendingCellChange *pc;
-
-    if (angbandContext->changes == 0) {
-       /* Bail out; there was an earlier memory allocation failure. */
-       return 1;
-    }
-    if (angbandContext->changes->rows[y] == 0) {
-       angbandContext->changes->rows[y] =
-           create_row_change(angbandContext->cols);
-       if (angbandContext->changes->rows[y] == 0) {
-           NSLog(@"failed to allocate changes for row %d", y);
-           return 1;
-       }
-       if (angbandContext->changes->ymin > y) {
-           angbandContext->changes->ymin = y;
-       }
-       if (angbandContext->changes->ymax < y) {
-           angbandContext->changes->ymax = y;
-       }
-    }
+    AngbandContext* angbandContext = (__bridge AngbandContext*) (Term->data);
+    int i = 0;
 
-    angbandContext->changes->has_text = 1;
-    if (angbandContext->changes->rows[y]->xmin > x) {
-       angbandContext->changes->rows[y]->xmin = x;
-    }
-    if (angbandContext->changes->rows[y]->xmax < x + n - 1) {
-       angbandContext->changes->rows[y]->xmax = x + n - 1;
-    }
-    pc = angbandContext->changes->rows[y]->cell_changes + x;
-    while (pc != angbandContext->changes->rows[y]->cell_changes + x + n) {
+    while (i < n) {
 #ifdef JP
        if (iskanji(*cp)) {
-           if (pc + 1 ==
-               angbandContext->changes->rows[y]->cell_changes + x + n) {
+           if (i == n - 1) {
                /*
                 * The second byte of the character is past the end.  Ignore
                 * the character.
                 */
                break;
            } else {
-               pc->c.w = convert_two_byte_eucjp_to_utf16_native(cp);
-               pc->a = a;
-               pc->tcol = 1;
-               pc->change_type = CELL_CHANGE_TEXT;
-               ++pc;
-               /*
-                * Fill in a dummy value since the previous character will take
-                * up two columns.
-                */
-               pc->c.w = 0;
-               pc->a = a;
-               pc->tcol = 0;
-               pc->change_type = CELL_CHANGE_TEXT;
-               ++pc;
+               [angbandContext.changes markTextChange:i+x row:y
+                              glyph:convert_two_byte_eucjp_to_utf16_native(cp)
+                              color:a isDoubleWidth:YES];
                cp += 2;
+               i += 2;
            }
        } else {
-           pc->c.w = *cp;
-           pc->a = a;
-           pc->tcol = 0;
-           pc->change_type = CELL_CHANGE_TEXT;
-           ++pc;
+           [angbandContext.changes markTextChange:i+x row:y
+                          glyph:*cp color:a isDoubleWidth:NO];
            ++cp;
+           ++i;
        }
 #else
-       pc->c.w = *cp;
-       pc->a = a;
-       pc->tcol = 0;
-       pc->change_type = CELL_CHANGE_TEXT;
-       ++pc;
+       [angbandContext.changes markTextChange:i+x row:y
+                      glyph:*cp color:a isDoubleWidth:NO];
        ++cp;
+       ++i;
 #endif
     }
-    
-    /* Success */
-    return (0);
-}
-
-/**
- * Post a nonsense event so that our event loop wakes up
- */
-static void wakeup_event_loop(void)
-{
-    /* Big hack - send a nonsense event to make us update */
-    NSEvent *event = [NSEvent otherEventWithType:NSApplicationDefined location:NSZeroPoint modifierFlags:0 timestamp:0 windowNumber:0 context:NULL subtype:AngbandEventWakeup data1:0 data2:0];
-    [NSApp postEvent:event atStart:NO];
-}
-
-
-/**
- * Create and initialize window number "i"
- */
-static term *term_data_link(int i)
-{
-    NSArray *terminalDefaults = [[NSUserDefaults standardUserDefaults] valueForKey: AngbandTerminalsDefaultsKey];
-    NSInteger rows = 24;
-    NSInteger columns = 80;
-
-    if( i < (int)[terminalDefaults count] )
-    {
-        NSDictionary *term = [terminalDefaults objectAtIndex: i];
-        rows = [[term valueForKey: AngbandTerminalRowsDefaultsKey] integerValue];
-        columns = [[term valueForKey: AngbandTerminalColumnsDefaultsKey] integerValue];
-    }
-
-    /* Allocate */
-    term *newterm = ZNEW(term);
-
-    /* Initialize the term */
-    term_init(newterm, columns, rows, 256 /* keypresses, for some reason? */);
-    
-    /* Differentiate between BS/^h, Tab/^i, etc. */
-    /* newterm->complex_input = TRUE; */
-
-    /* Use a "software" cursor */
-    newterm->soft_cursor = TRUE;
-    
-    /* Disable the per-row flush notifications since they are not used. */
-    newterm->never_frosh = TRUE;
-
-    /* Erase with "white space" */
-    newterm->attr_blank = TERM_WHITE;
-    newterm->char_blank = ' ';
-    
-    /* Prepare the init/nuke hooks */
-    newterm->init_hook = Term_init_cocoa;
-    newterm->nuke_hook = Term_nuke_cocoa;
-    
-    /* Prepare the function hooks */
-    newterm->xtra_hook = Term_xtra_cocoa;
-    newterm->wipe_hook = Term_wipe_cocoa;
-    newterm->curs_hook = Term_curs_cocoa;
-    newterm->bigcurs_hook = Term_bigcurs_cocoa;
-    newterm->text_hook = Term_text_cocoa;
-    newterm->pict_hook = Term_pict_cocoa;
-    /* newterm->mbcs_hook = Term_mbcs_cocoa; */
-    
-    /* Global pointer */
-    angband_term[i] = newterm;
-    
-    return newterm;
-}
-
-/**
- * Load preferences from preferences file for current host+current user+
- * current application.
- */
-static void load_prefs()
-{
-    NSUserDefaults *defs = [NSUserDefaults angbandDefaults];
-    
-    /* Make some default defaults */
-    NSMutableArray *defaultTerms = [[NSMutableArray alloc] init];
-
-    /* The following default rows/cols were determined experimentally by first
-        * finding the ideal window/font size combinations. But because of awful
-        * temporal coupling in Term_init_cocoa(), it's impossible to set up the
-        * defaults there, so we do it this way. */
-    for( NSUInteger i = 0; i < ANGBAND_TERM_MAX; i++ )
-    {
-               int columns, rows;
-               BOOL visible = YES;
-
-               switch( i )
-               {
-                       case 0:
-                               columns = 129;
-                               rows = 32;
-                               break;
-                       case 1:
-                               columns = 84;
-                               rows = 20;
-                               break;
-                       case 2:
-                               columns = 42;
-                               rows = 24;
-                               break;
-                       case 3:
-                               columns = 42;
-                               rows = 20;
-                               break;
-                       case 4:
-                               columns = 42;
-                               rows = 16;
-                               break;
-                       case 5:
-                               columns = 84;
-                               rows = 20;
-                               break;
-                       default:
-                               columns = 80;
-                               rows = 24;
-                               visible = NO;
-                               break;
-               }
-
-               NSDictionary *standardTerm = [NSDictionary dictionaryWithObjectsAndKeys:
-                                                                         [NSNumber numberWithInt: rows], AngbandTerminalRowsDefaultsKey,
-                                                                         [NSNumber numberWithInt: columns], AngbandTerminalColumnsDefaultsKey,
-                                                                         [NSNumber numberWithBool: visible], AngbandTerminalVisibleDefaultsKey,
-                                                                         nil];
-        [defaultTerms addObject: standardTerm];
-    }
-
-    NSDictionary *defaults = [[NSDictionary alloc] initWithObjectsAndKeys:
-#ifdef JP
-                              @"Osaka", @"FontName",
-#else
-                              @"Menlo", @"FontName",
-#endif
-                              [NSNumber numberWithFloat:13.f], @"FontSize",
-                              [NSNumber numberWithInt:60], AngbandFrameRateDefaultsKey,
-                              [NSNumber numberWithBool:YES], AngbandSoundDefaultsKey,
-                              [NSNumber numberWithInt:GRAPHICS_NONE], AngbandGraphicsDefaultsKey,
-                              [NSNumber numberWithBool:YES], AngbandBigTileDefaultsKey,
-                              defaultTerms, AngbandTerminalsDefaultsKey,
-                              nil];
-    [defs registerDefaults:defaults];
-    [defaults release];
-    [defaultTerms release];
-    
-    /* Preferred graphics mode */
-    graf_mode_req = [defs integerForKey:AngbandGraphicsDefaultsKey];
-    if (graf_mode_req != GRAPHICS_NONE &&
-       get_graphics_mode(graf_mode_req)->grafID != GRAPHICS_NONE &&
-       [defs boolForKey:AngbandBigTileDefaultsKey] == YES) {
-       use_bigtile = TRUE;
-       arg_bigtile = TRUE;
-    } else {
-       use_bigtile = FALSE;
-       arg_bigtile = FALSE;
-    }
-
-    /* Use sounds; set the Angband global */
-    use_sound = ([defs boolForKey:AngbandSoundDefaultsKey] == YES) ? TRUE : FALSE;
-    
-    /* fps */
-    frames_per_second = [defs integerForKey:AngbandFrameRateDefaultsKey];
-    
-    /* Font */
-    default_font = [[NSFont fontWithName:[defs valueForKey:@"FontName-0"] size:[defs floatForKey:@"FontSize-0"]] retain];
-    if (! default_font) default_font = [[NSFont fontWithName:@"Menlo" size:13.] retain];
-}
-
-/**
- * Arbitary limit on number of possible samples per event
- */
-#define MAX_SAMPLES            16
-
-/**
- * Struct representing all data for a set of event samples
- */
-typedef struct
-{
-       int num;        /* Number of available samples for this event */
-       NSSound *sound[MAX_SAMPLES];
-} sound_sample_list;
-
-/**
- * Array of event sound structs
- */
-static sound_sample_list samples[MSG_MAX];
-
-
-/**
- * Load sound effects based on sound.cfg within the xtra/sound directory;
- * bridge to Cocoa to use NSSound for simple loading and playback, avoiding
- * I/O latency by cacheing all sounds at the start.  Inherits full sound
- * format support from Quicktime base/plugins.
- * pelpel favoured a plist-based parser for the future but .cfg support
- * improves cross-platform compatibility.
- */
-static void load_sounds(void)
-{
-       char sound_dir[1024];
-       char path[1024];
-       char buffer[2048];
-       FILE *fff;
-    
-       /* Build the "sound" path */
-       path_build(sound_dir, sizeof(sound_dir), ANGBAND_DIR_XTRA, "sound");
-    
-       /* Find and open the config file */
-       path_build(path, sizeof(path), sound_dir, "sound.cfg");
-       fff = my_fopen(path, "r");
-    
-       /* Handle errors */
-       if (!fff)
-       {
-               NSLog(@"The sound configuration file could not be opened.");
-               return;
-       }
-       
-       /* Instantiate an autorelease pool for use by NSSound */
-       NSAutoreleasePool *autorelease_pool;
-       autorelease_pool = [[NSAutoreleasePool alloc] init];
-    
-    /* Use a dictionary to unique sounds, so we can share NSSounds across
-        * multiple events */
-    NSMutableDictionary *sound_dict = [NSMutableDictionary dictionary];
-    
-       /*
-        * This loop may take a while depending on the count and size of samples
-        * to load.
-        */
-    
-       /* Parse the file */
-       /* Lines are always of the form "name = sample [sample ...]" */
-        while (my_fgets(fff, buffer, sizeof(buffer)) == 0)
-       {
-               char *msg_name;
-               char *cfg_sample_list;
-               char *search;
-               char *cur_token;
-               char *next_token;
-               int event;
-        
-               /* Skip anything not beginning with an alphabetic character */
-               if (!buffer[0] || !isalpha((unsigned char)buffer[0])) continue;
-        
-               /* Split the line into two: message name, and the rest */
-               search = strchr(buffer, ' ');
-               cfg_sample_list = strchr(search + 1, ' ');
-               if (!search) continue;
-               if (!cfg_sample_list) continue;
-        
-               /* Set the message name, and terminate at first space */
-               msg_name = buffer;
-               search[0] = '\0';
-        
-               /* Make sure this is a valid event name */
-               for (event = MSG_MAX - 1; event >= 0; event--)
-               {
-                       if (strcmp(msg_name, angband_sound_name[event]) == 0)
-                               break;
-               }
-               if (event < 0) continue;
-        
-               /* Advance the sample list pointer so it's at the beginning of text */
-               cfg_sample_list++;
-               if (!cfg_sample_list[0]) continue;
-        
-               /* Terminate the current token */
-               cur_token = cfg_sample_list;
-               search = strchr(cur_token, ' ');
-               if (search)
-               {
-                       search[0] = '\0';
-                       next_token = search + 1;
-               }
-               else
-               {
-                       next_token = NULL;
-               }
-        
-               /*
-                * Now we find all the sample names and add them one by one
-                */
-               while (cur_token)
-               {
-                       int num = samples[event].num;
-            
-                       /* Don't allow too many samples */
-                       if (num >= MAX_SAMPLES) break;
-            
-            NSString *token_string = [NSString stringWithUTF8String:cur_token];
-            NSSound *sound = [sound_dict objectForKey:token_string];
-            
-            if (! sound)
-            {
-               struct stat stb;
 
-                /* We have to load the sound. Build the path to the sample */
-                path_build(path, sizeof(path), sound_dir, cur_token);
-                if (stat(path, &stb) == 0)
-               {
-                    
-                    /* Load the sound into memory */
-                    sound = [[[NSSound alloc] initWithContentsOfFile:[NSString stringWithUTF8String:path] byReference:YES] autorelease];
-                    if (sound) [sound_dict setObject:sound forKey:token_string];
-                }
-            }
-            
-            /* Store it if we loaded it */
-            if (sound)
-            {
-                samples[event].sound[num] = [sound retain];
-                
-                /* Imcrement the sample count */
-                samples[event].num++;
-            }
-            
-            
-                       /* Figure out next token */
-                       cur_token = next_token;
-                       if (next_token)
-                       {
-                               /* Try to find a space */
-                               search = strchr(cur_token, ' ');
-                
-                               /* If we can find one, terminate, and set new "next" */
-                               if (search)
-                               {
-                                       search[0] = '\0';
-                                       next_token = search + 1;
-                               }
-                               else
-                               {
-                                       /* Otherwise prevent infinite looping */
-                                       next_token = NULL;
-                               }
-                       }
-               }
-       }
-    
-       /* Release the autorelease pool */
-       [autorelease_pool release];
-    
-       /* Close the file */
-       my_fclose(fff);
+    /* Success */
+    return 0;
 }
 
 /**
- * Play sound effects asynchronously.  Select a sound from any available
- * for the required event, and bridge to Cocoa to play it.
- */
-static void play_sound(int event)
-{    
-       /* Paranoia */
-       if (event < 0 || event >= MSG_MAX) return;
-    
-    /* Load sounds just-in-time (once) */
-    static BOOL loaded = NO;
-    if (!loaded) {
-        loaded = YES;
-        load_sounds();
-    }
-    
-    /* Check there are samples for this event */
-    if (!samples[event].num) return;
-    
-    /* Instantiate an autorelease pool for use by NSSound */
-    NSAutoreleasePool *autorelease_pool;
-    autorelease_pool = [[NSAutoreleasePool alloc] init];
-    
-    /* Choose a random event */
-    int s = randint0(samples[event].num);
-    
-    /* Stop the sound if it's currently playing */
-    if ([samples[event].sound[s] isPlaying])
-        [samples[event].sound[s] stop];
-    
-    /* Play the sound */
-    [samples[event].sound[s] play];
-    
-    /* Release the autorelease pool */
-    [autorelease_pool drain];
-}
-
-/*
- * 
+ * Post a nonsense event so that our event loop wakes up
  */
-static void init_windows(void)
+static void wakeup_event_loop(void)
 {
-    /* Create the main window */
-    term *primary = term_data_link(0);
-    
-    /* Prepare to create any additional windows */
-    int i;
-    for (i=1; i < ANGBAND_TERM_MAX; i++) {
-        term_data_link(i);
-    }
-    
-    /* Activate the primary term */
-    Term_activate(primary);
+    /* Big hack - send a nonsense event to make us update */
+    NSEvent *event = [NSEvent otherEventWithType:NSApplicationDefined location:NSZeroPoint modifierFlags:0 timestamp:0 windowNumber:0 context:NULL subtype:AngbandEventWakeup data1:0 data2:0];
+    [NSApp postEvent:event atStart:NO];
 }
 
+
 /**
  * Handle the "open_when_ready" flag
  */
@@ -3467,14 +3664,17 @@ static void AngbandHandleEventMouseDown( NSEvent *event )
 {
 #if 0
        AngbandContext *angbandContext = [[[event window] contentView] angbandContext];
-       AngbandContext *mainAngbandContext = angband_term[0]->data;
+       AngbandContext *mainAngbandContext =
+           (__bridge AngbandContext*) (angband_term[0]->data);
 
-       if (mainAngbandContext->primaryWindow && [[event window] windowNumber] == [mainAngbandContext->primaryWindow windowNumber])
+       if (mainAngbandContext.primaryWindow &&
+           [[event window] windowNumber] ==
+           [mainAngbandContext.primaryWindow windowNumber])
        {
                int cols, rows, x, y;
                Term_get_size(&cols, &rows);
-               NSSize tileSize = angbandContext->tileSize;
-               NSSize border = angbandContext->borderSize;
+               NSSize tileSize = angbandContext.tileSize;
+               NSSize border = angbandContext.borderSize;
                NSPoint windowPoint = [event locationInWindow];
 
                /* Adjust for border; add border height because window origin is at
@@ -3515,8 +3715,9 @@ static void AngbandHandleEventMouseDown( NSEvent *event )
                }
        }
 #endif
-    /* Pass click through to permit focus change, resize, etc. */
-    [NSApp sendEvent:event];
+
+       /* Pass click through to permit focus change, resize, etc. */
+       [NSApp sendEvent:event];
 }
 
 
@@ -3656,42 +3857,39 @@ static BOOL send_event(NSEvent *event)
  * Check for Events, return TRUE if we process any
  */
 static BOOL check_events(int wait)
-{ 
-    
-    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
-    
-    /* Handles the quit_when_ready flag */
-    if (quit_when_ready) quit_calmly();
-    
-    NSDate* endDate;
-    if (wait == CHECK_EVENTS_WAIT) endDate = [NSDate distantFuture];
-    else endDate = [NSDate distantPast];
-    
-    NSEvent* event;
-    for (;;) {
-        if (quit_when_ready)
-        {
-            /* send escape events until we quit */
-            Term_keypress(0x1B);
-            [pool drain];
-            return false;
-        }
-        else {
-            event = [NSApp nextEventMatchingMask:-1 untilDate:endDate inMode:NSDefaultRunLoopMode dequeue:YES];
-            if (! event)
-            {
-                [pool drain];
-                return FALSE;
-            }
-            if (send_event(event)) break;
-        }
+{
+    BOOL result = YES;
+
+    @autoreleasepool {
+       /* Handles the quit_when_ready flag */
+       if (quit_when_ready) quit_calmly();
+
+       NSDate* endDate;
+       if (wait == CHECK_EVENTS_WAIT) endDate = [NSDate distantFuture];
+       else endDate = [NSDate distantPast];
+
+       NSEvent* event;
+       for (;;) {
+           if (quit_when_ready)
+           {
+               /* send escape events until we quit */
+               Term_keypress(0x1B);
+               result = NO;
+               break;
+           }
+           else {
+               event = [NSApp nextEventMatchingMask:-1 untilDate:endDate
+                              inMode:NSDefaultRunLoopMode dequeue:YES];
+               if (! event) {
+                   result = NO;
+                   break;
+               }
+               if (send_event(event)) break;
+           }
+       }
     }
-    
-    [pool drain];
-    
-    /* Something happened */
-    return YES;
-    
+
+    return result;
 }
 
 /**
@@ -3716,7 +3914,6 @@ static void hook_plog(const char * str)
        alert.messageText = msg;
        alert.informativeText = info;
        NSModalResponse result = [alert runModal];
-       [alert release];
     }
 }
 
@@ -3771,7 +3968,6 @@ static NSString* get_lib_directory(void)
        alert.informativeText = info;
        [alert addButtonWithTitle:quit_label];
        NSModalResponse result = [alert runModal];
-       [alert release];
        exit( 0 );
     }
 
@@ -3836,6 +4032,15 @@ static void prepare_paths_and_directories(void)
 }
 
 /**
+ * Play sound effects asynchronously.  Select a sound from any available
+ * for the required event, and bridge to Cocoa to play it.
+ */
+static void play_sound(int event)
+{
+    [[AngbandSoundCatalog sharedSounds] playSound:event];
+}
+
+/**
  * ------------------------------------------------------------------------
  * Main program
  * ------------------------------------------------------------------------ */
@@ -3856,16 +4061,18 @@ static void prepare_paths_and_directories(void)
 - (IBAction)editFont:sender
 {
     NSFontPanel *panel = [NSFontPanel sharedFontPanel];
-    NSFont *termFont = default_font;
+    NSFont *termFont = [AngbandContext defaultFont];
 
     int i;
     for (i=0; i < ANGBAND_TERM_MAX; i++) {
-        if ([(id)angband_term[i]->data isMainWindow]) {
-            termFont = [(id)angband_term[i]->data selectionFont];
+       AngbandContext *context =
+           (__bridge AngbandContext*) (angband_term[i]->data);
+        if ([context isMainWindow]) {
+            termFont = [context angbandViewFont];
             break;
         }
     }
-    
+
     [panel setPanelFont:termFont isMultiple:NO];
     [panel orderFront:self];
 }
@@ -3880,25 +4087,25 @@ static void prepare_paths_and_directories(void)
 {
     int mainTerm;
     for (mainTerm=0; mainTerm < ANGBAND_TERM_MAX; mainTerm++) {
-        if ([(id)angband_term[mainTerm]->data isMainWindow]) {
+       AngbandContext *context =
+           (__bridge AngbandContext*) (angband_term[mainTerm]->data);
+        if ([context isMainWindow]) {
             break;
         }
     }
 
     /* Bug #1709: Only change font for angband windows */
     if (mainTerm == ANGBAND_TERM_MAX) return;
-    
-    NSFont *oldFont = default_font;
+
+    NSFont *oldFont = [AngbandContext defaultFont];
     NSFont *newFont = [sender convertFont:oldFont];
     if (! newFont) return; /*paranoia */
-    
+
     /* Store as the default font if we changed the first term */
     if (mainTerm == 0) {
-        [newFont retain];
-        [default_font release];
-        default_font = newFont;
+       [AngbandContext setDefaultFont:newFont];
     }
-    
+
     /* Record it in the preferences */
     NSUserDefaults *defs = [NSUserDefaults angbandDefaults];
     [defs setValue:[newFont fontName] 
@@ -3906,13 +4113,14 @@ static void prepare_paths_and_directories(void)
     [defs setFloat:[newFont pointSize]
         forKey:[NSString stringWithFormat:@"FontSize-%d", mainTerm]];
     [defs synchronize];
-    
+
     NSDisableScreenUpdates();
-    
+
     /* Update window */
-    AngbandContext *angbandContext = angband_term[mainTerm]->data;
+    AngbandContext *angbandContext =
+       (__bridge AngbandContext*) (angband_term[mainTerm]->data);
     [(id)angbandContext setSelectionFont:newFont adjustTerminal: YES];
-    
+
     NSEnableScreenUpdates();
 
     if (mainTerm == 0 && game_in_progress) {
@@ -3926,49 +4134,55 @@ static void prepare_paths_and_directories(void)
 
 - (IBAction)openGame:sender
 {
-    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
-    BOOL selectedSomething = NO;
-    int panelResult;
-    
-    /* Get where we think the save files are */
-    NSURL *startingDirectoryURL = [NSURL fileURLWithPath:[NSString stringWithCString:ANGBAND_DIR_SAVE encoding:NSASCIIStringEncoding] isDirectory:YES];
-    
-    /* Set up an open panel */
-    NSOpenPanel* panel = [NSOpenPanel openPanel];
-    [panel setCanChooseFiles:YES];
-    [panel setCanChooseDirectories:NO];
-    [panel setResolvesAliases:YES];
-    [panel setAllowsMultipleSelection:NO];
-    [panel setTreatsFilePackagesAsDirectories:YES];
-    [panel setDirectoryURL:startingDirectoryURL];
-    
-    /* Run it */
-    panelResult = [panel runModal];
-    if (panelResult == NSOKButton)
-    {
-        NSArray* fileURLs = [panel URLs];
-        if ([fileURLs count] > 0 && [[fileURLs objectAtIndex:0] isFileURL])
-        {
-            NSURL* savefileURL = (NSURL *)[fileURLs objectAtIndex:0];
-            /* The path property doesn't do the right thing except for
-             * URLs with the file scheme. We had getFileSystemRepresentation
-             * here before, but that wasn't introduced until OS X 10.9. */
-            selectedSomething = [[savefileURL path] getCString:savefile 
-                maxLength:sizeof savefile encoding:NSMacOSRomanStringEncoding];
-        }
-    }
-    
-    if (selectedSomething)
-    {
-        /* Remember this so we can select it by default next time */
-        record_current_savefile();
-        
-        /* Game is in progress */
-        game_in_progress = TRUE;
-        new_game = FALSE;
+    @autoreleasepool {
+       BOOL selectedSomething = NO;
+       int panelResult;
+
+       /* Get where we think the save files are */
+       NSURL *startingDirectoryURL =
+           [NSURL fileURLWithPath:[NSString stringWithCString:ANGBAND_DIR_SAVE encoding:NSASCIIStringEncoding]
+                  isDirectory:YES];
+
+       /* Set up an open panel */
+       NSOpenPanel* panel = [NSOpenPanel openPanel];
+       [panel setCanChooseFiles:YES];
+       [panel setCanChooseDirectories:NO];
+       [panel setResolvesAliases:YES];
+       [panel setAllowsMultipleSelection:NO];
+       [panel setTreatsFilePackagesAsDirectories:YES];
+       [panel setDirectoryURL:startingDirectoryURL];
+
+       /* Run it */
+       panelResult = [panel runModal];
+       if (panelResult == NSOKButton)
+       {
+           NSArray* fileURLs = [panel URLs];
+           if ([fileURLs count] > 0 && [[fileURLs objectAtIndex:0] isFileURL])
+           {
+               NSURL* savefileURL = (NSURL *)[fileURLs objectAtIndex:0];
+               /*
+                * The path property doesn't do the right thing except for
+                * URLs with the file scheme. We had
+                * getFileSystemRepresentation here before, but that wasn't
+                * introduced until OS X 10.9.
+                */
+               selectedSomething = [[savefileURL path]
+                                       getCString:savefile
+                                       maxLength:sizeof savefile
+                                       encoding:NSMacOSRomanStringEncoding];
+           }
+       }
+
+       if (selectedSomething)
+       {
+           /* Remember this so we can select it by default next time */
+           record_current_savefile();
+
+           /* Game is in progress */
+           game_in_progress = TRUE;
+           new_game = FALSE;
+       }
     }
-    
-    [pool drain];
 }
 
 - (IBAction)saveGame:sender
@@ -3986,73 +4200,247 @@ static void prepare_paths_and_directories(void)
 }
 
 /**
- * Entry point for initializing Angband
+ * Create and initialize Angband terminal number "termIndex".
  */
-- (void)beginGame
+- (void)linkTermData:(int)termIndex
 {
-    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+    NSArray *terminalDefaults = [[NSUserDefaults standardUserDefaults]
+                                   valueForKey: AngbandTerminalsDefaultsKey];
+    NSInteger rows = 24;
+    NSInteger columns = 80;
+
+    if (termIndex < (int)[terminalDefaults count]) {
+        NSDictionary *term = [terminalDefaults objectAtIndex:termIndex];
+        rows = [[term valueForKey: AngbandTerminalRowsDefaultsKey]
+                  integerValue];
+        columns = [[term valueForKey: AngbandTerminalColumnsDefaultsKey]
+                     integerValue];
+    }
+
+    /* Allocate */
+    term *newterm = ZNEW(term);
+
+    /* Initialize the term */
+    term_init(newterm, columns, rows, 256 /* keypresses, for some reason? */);
 
-    /* Hooks in some "z-util.c" hooks */
-    plog_aux = hook_plog;
-    quit_aux = hook_quit;
+    /* Differentiate between BS/^h, Tab/^i, etc. */
+    /* newterm->complex_input = TRUE; */
 
-    /* Initialize file paths */
-    prepare_paths_and_directories();
+    /* Use a "software" cursor */
+    newterm->soft_cursor = TRUE;
 
-    /* Note the "system" */
-    ANGBAND_SYS = "coc";
+    /* Disable the per-row flush notifications since they are not used. */
+    newterm->never_frosh = TRUE;
 
-    /* Load possible graphics modes */
-    init_graphics_modes();
+    /* Erase with "white space" */
+    newterm->attr_blank = TERM_WHITE;
+    newterm->char_blank = ' ';
 
-    /* Load preferences */
-    load_prefs();
+    /* Prepare the init/nuke hooks */
+    newterm->init_hook = Term_init_cocoa;
+    newterm->nuke_hook = Term_nuke_cocoa;
 
-    /* Prepare the windows */
-    init_windows();
+    /* Prepare the function hooks */
+    newterm->xtra_hook = Term_xtra_cocoa;
+    newterm->wipe_hook = Term_wipe_cocoa;
+    newterm->curs_hook = Term_curs_cocoa;
+    newterm->bigcurs_hook = Term_bigcurs_cocoa;
+    newterm->text_hook = Term_text_cocoa;
+    newterm->pict_hook = Term_pict_cocoa;
+    /* newterm->mbcs_hook = Term_mbcs_cocoa; */
 
-    /* Set up game event handlers */
-    /* init_display(); */
+    /* Global pointer */
+    angband_term[termIndex] = newterm;
+}
 
-    /* Register the sound hook */
-    /* sound_hook = play_sound; */
+/**
+ * Allocate the primary Angband terminal and activate it.  Allocate the other
+ * Angband terminals.
+ */
+- (void)initWindows {
+    for (int i = 0; i < ANGBAND_TERM_MAX; i++) {
+       [self linkTermData:i];
+    }
 
-    /* Initialise game */
-    init_angband();
+    Term_activate(angband_term[0]);
+}
 
-    /* Initialize some save file stuff */
-    player_egid = getegid();
+/**
+ * Load preferences from preferences file for current host+current user+
+ * current application.
+ */
+- (void)loadPrefs
+{
+    NSUserDefaults *defs = [NSUserDefaults angbandDefaults];
 
-    /* We are now initialized */
-    initialized = TRUE;
+    /* Make some default defaults */
+    NSMutableArray *defaultTerms = [[NSMutableArray alloc] init];
 
-    /* Handle "open_when_ready" */
-    handle_open_when_ready();
+    /*
+     * The following default rows/cols were determined experimentally by first
+     * finding the ideal window/font size combinations. But because of awful
+     * temporal coupling in Term_init_cocoa(), it's impossible to set up the
+     * defaults there, so we do it this way.
+     */
+    for (NSUInteger i = 0; i < ANGBAND_TERM_MAX; i++) {
+       int columns, rows;
+       BOOL visible = YES;
+
+       switch (i) {
+       case 0:
+           columns = 129;
+           rows = 32;
+           break;
+       case 1:
+           columns = 84;
+           rows = 20;
+           break;
+       case 2:
+           columns = 42;
+           rows = 24;
+           break;
+       case 3:
+           columns = 42;
+           rows = 20;
+           break;
+       case 4:
+           columns = 42;
+           rows = 16;
+           break;
+       case 5:
+           columns = 84;
+           rows = 20;
+           break;
+       default:
+           columns = 80;
+           rows = 24;
+           visible = NO;
+           break;
+       }
 
-    /* Handle pending events (most notably update) and flush input */
-    Term_flush();
+       NSDictionary *standardTerm =
+           [NSDictionary dictionaryWithObjectsAndKeys:
+                         [NSNumber numberWithInt: rows], AngbandTerminalRowsDefaultsKey,
+                         [NSNumber numberWithInt: columns], AngbandTerminalColumnsDefaultsKey,
+                         [NSNumber numberWithBool: visible], AngbandTerminalVisibleDefaultsKey,
+                         nil];
+        [defaultTerms addObject: standardTerm];
+    }
 
-    /* Prompt the user. */
-    int message_row = (Term->hgt - 23) / 5 + 23;
-    Term_erase(0, message_row, 255);
-    put_str(
+    NSDictionary *defaults = [[NSDictionary alloc] initWithObjectsAndKeys:
 #ifdef JP
-       "['ファイル' メニューから '新' または '開く' を選択します]",
-       message_row, (Term->wid - 57) / 2
+                              @"Osaka", @"FontName",
 #else
-       "[Choose 'New' or 'Open' from the 'File' menu]",
-       message_row, (Term->wid - 45) / 2
+                              @"Menlo", @"FontName",
 #endif
-    );
-    Term_fresh();
+                              [NSNumber numberWithFloat:13.f], @"FontSize",
+                              [NSNumber numberWithInt:60], AngbandFrameRateDefaultsKey,
+                              [NSNumber numberWithBool:YES], AngbandSoundDefaultsKey,
+                              [NSNumber numberWithInt:GRAPHICS_NONE], AngbandGraphicsDefaultsKey,
+                              [NSNumber numberWithBool:YES], AngbandBigTileDefaultsKey,
+                              defaultTerms, AngbandTerminalsDefaultsKey,
+                              nil];
+    [defs registerDefaults:defaults];
+
+    /* Preferred graphics mode */
+    graf_mode_req = [defs integerForKey:AngbandGraphicsDefaultsKey];
+    if (graf_mode_req != GRAPHICS_NONE &&
+       get_graphics_mode(graf_mode_req)->grafID != GRAPHICS_NONE &&
+       [defs boolForKey:AngbandBigTileDefaultsKey] == YES) {
+       use_bigtile = TRUE;
+       arg_bigtile = TRUE;
+    } else {
+       use_bigtile = FALSE;
+       arg_bigtile = FALSE;
+    }
+
+    /* Use sounds; set the Angband global */
+    if ([defs boolForKey:AngbandSoundDefaultsKey] == YES) {
+       use_sound = TRUE;
+       [AngbandSoundCatalog sharedSounds].enabled = YES;
+    } else {
+       use_sound = FALSE;
+       [AngbandSoundCatalog sharedSounds].enabled = NO;
+    }
+
+    /* fps */
+    frames_per_second = [defs integerForKey:AngbandFrameRateDefaultsKey];
+
+    /* Font */
+    [AngbandContext
+       setDefaultFont:[NSFont fontWithName:[defs valueForKey:@"FontName-0"]
+                              size:[defs floatForKey:@"FontSize-0"]]];
+    if (! [AngbandContext defaultFont])
+       [AngbandContext
+           setDefaultFont:[NSFont fontWithName:@"Menlo" size:13.]];
+}
+
+/**
+ * Entry point for initializing Angband
+ */
+- (void)beginGame
+{
+    @autoreleasepool {
+       /* Hooks in some "z-util.c" hooks */
+       plog_aux = hook_plog;
+       quit_aux = hook_quit;
+
+       /* Initialize file paths */
+       prepare_paths_and_directories();
+
+       /* Note the "system" */
+       ANGBAND_SYS = "coc";
+
+       /* Load possible graphics modes */
+       init_graphics_modes();
+
+       /* Load preferences */
+       [self loadPrefs];
+
+       /* Prepare the windows */
+       [self initWindows];
+
+       /* Set up game event handlers */
+       /* init_display(); */
+
+       /* Register the sound hook */
+       /* sound_hook = play_sound; */
+
+       /* Initialise game */
+       init_angband();
+
+       /* Initialize some save file stuff */
+       player_egid = getegid();
 
-    [pool drain];
+       /* We are now initialized */
+       initialized = TRUE;
+
+       /* Handle "open_when_ready" */
+       handle_open_when_ready();
+
+       /* Handle pending events (most notably update) and flush input */
+       Term_flush();
+
+       /* Prompt the user */
+       int message_row = (Term->hgt - 23) / 5 + 23;
+       Term_erase(0, message_row, 255);
+       put_str(
+#ifdef JP
+           "['ファイル' メニューから '新' または '開く' を選択します]",
+           message_row, (Term->wid - 57) / 2
+#else
+           "[Choose 'New' or 'Open' from the 'File' menu]",
+           message_row, (Term->wid - 45) / 2
+#endif
+       );
+       Term_fresh();
+    }
 
     while (!game_in_progress) {
-        NSAutoreleasePool *splashScreenPool = [[NSAutoreleasePool alloc] init];
-        NSEvent *event = [NSApp nextEventMatchingMask:NSAnyEventMask untilDate:[NSDate distantFuture] inMode:NSDefaultRunLoopMode dequeue:YES];
-        if (event) [NSApp sendEvent:event];
-        [splashScreenPool drain];
+       @autoreleasepool {
+           NSEvent *event = [NSApp nextEventMatchingMask:NSAnyEventMask untilDate:[NSDate distantFuture] inMode:NSDefaultRunLoopMode dequeue:YES];
+           if (event) [NSApp sendEvent:event];
+       }
     }
 
     /*
@@ -4152,53 +4540,6 @@ static void prepare_paths_and_directories(void)
     [[NSUserDefaults angbandDefaults] setInteger:frames_per_second forKey:AngbandFrameRateDefaultsKey];
 }
 
-- (void)selectWindow: (id)sender
-{
-    NSInteger subwindowNumber = [(NSMenuItem *)sender tag] - AngbandWindowMenuItemTagBase;
-    AngbandContext *context = angband_term[subwindowNumber]->data;
-    [context->primaryWindow makeKeyAndOrderFront: self];
-       [context saveWindowVisibleToDefaults: YES];
-}
-
-- (void)prepareWindowsMenu
-{
-    /* Get the window menu with default items and add a separator and item for
-        * the main window */
-    NSMenu *windowsMenu = [[NSApplication sharedApplication] windowsMenu];
-    [windowsMenu addItem: [NSMenuItem separatorItem]];
-
-    NSString *title1 = [NSString stringWithCString:angband_term_name[0]
-#ifdef JP
-                               encoding:NSJapaneseEUCStringEncoding
-#else
-                               encoding:NSMacOSRomanStringEncoding
-#endif
-    ];
-    NSMenuItem *angbandItem = [[NSMenuItem alloc] initWithTitle:title1 action: @selector(selectWindow:) keyEquivalent: @"0"];
-    [angbandItem setTarget: self];
-    [angbandItem setTag: AngbandWindowMenuItemTagBase];
-    [windowsMenu addItem: angbandItem];
-    [angbandItem release];
-
-    /* Add items for the additional term windows */
-    for( NSInteger i = 1; i < ANGBAND_TERM_MAX; i++ )
-    {
-        NSString *title = [NSString stringWithCString:angband_term_name[i]
-#ifdef JP
-                                   encoding:NSJapaneseEUCStringEncoding
-#else
-                                   encoding:NSMacOSRomanStringEncoding
-#endif
-       ];
-        NSString *keyEquivalent = [NSString stringWithFormat: @"%ld", (long)i];
-        NSMenuItem *windowItem = [[NSMenuItem alloc] initWithTitle: title action: @selector(selectWindow:) keyEquivalent: keyEquivalent];
-        [windowItem setTarget: self];
-        [windowItem setTag: AngbandWindowMenuItemTagBase + i];
-        [windowsMenu addItem: windowItem];
-        [windowItem release];
-    }
-}
-
 - (void)setGraphicsMode:(NSMenuItem *)sender
 {
     /* We stashed the graphics mode ID in the menu item's tag */
@@ -4207,7 +4548,7 @@ static void prepare_paths_and_directories(void)
     /* Stash it in UserDefaults */
     [[NSUserDefaults angbandDefaults] setInteger:graf_mode_req forKey:AngbandGraphicsDefaultsKey];
     [[NSUserDefaults angbandDefaults] synchronize];
-    
+
     if (graf_mode_req == GRAPHICS_NONE ||
        get_graphics_mode(graf_mode_req) == GRAPHICS_NONE) {
        if (use_bigtile) {
@@ -4227,19 +4568,36 @@ static void prepare_paths_and_directories(void)
 
         /* Hack -- Force redraw */
         do_cmd_redraw();
-        
+
         /* Wake up the event loop so it notices the change */
         wakeup_event_loop();
     }
 }
 
+- (void)selectWindow: (id)sender
+{
+    NSInteger subwindowNumber =
+       [(NSMenuItem *)sender tag] - AngbandWindowMenuItemTagBase;
+    AngbandContext *context =
+       (__bridge AngbandContext*) (angband_term[subwindowNumber]->data);
+    [context.primaryWindow makeKeyAndOrderFront: self];
+    [context saveWindowVisibleToDefaults: YES];
+}
+
 - (IBAction) toggleSound: (NSMenuItem *) sender
 {
     BOOL is_on = (sender.state == NSOnState);
 
     /* Toggle the state and update the Angband global and preferences. */
-    sender.state = (is_on) ? NSOffState : NSOnState;
-    use_sound = (is_on) ? FALSE : TRUE;
+    if (is_on) {
+       sender.state = NSOffState;
+       use_sound = FALSE;
+       [AngbandSoundCatalog sharedSounds].enabled = NO;
+    } else {
+       sender.state = NSOnState;
+       use_sound = TRUE;
+       [AngbandSoundCatalog sharedSounds].enabled = YES;
+    }
     [[NSUserDefaults angbandDefaults] setBool:(! is_on)
                                      forKey:AngbandSoundDefaultsKey];
 }
@@ -4265,6 +4623,51 @@ static void prepare_paths_and_directories(void)
     }
 }
 
+- (void)prepareWindowsMenu
+{
+    @autoreleasepool {
+       /*
+        * Get the window menu with default items and add a separator and
+        * item for the main window.
+        */
+       NSMenu *windowsMenu = [[NSApplication sharedApplication] windowsMenu];
+       [windowsMenu addItem: [NSMenuItem separatorItem]];
+
+       NSString *title1 = [NSString stringWithCString:angband_term_name[0]
+#ifdef JP
+                                    encoding:NSJapaneseEUCStringEncoding
+#else
+                                    encoding:NSMacOSRomanStringEncoding
+#endif
+       ];
+       NSMenuItem *angbandItem = [[NSMenuItem alloc] initWithTitle:title1 action: @selector(selectWindow:) keyEquivalent: @"0"];
+       [angbandItem setTarget: self];
+       [angbandItem setTag: AngbandWindowMenuItemTagBase];
+       [windowsMenu addItem: angbandItem];
+
+       /* Add items for the additional term windows */
+       for( NSInteger i = 1; i < ANGBAND_TERM_MAX; i++ )
+       {
+           NSString *title = [NSString stringWithCString:angband_term_name[i]
+#ifdef JP
+                                       encoding:NSJapaneseEUCStringEncoding
+#else
+                                       encoding:NSMacOSRomanStringEncoding
+#endif
+           ];
+           NSString *keyEquivalent =
+               [NSString stringWithFormat: @"%ld", (long)i];
+           NSMenuItem *windowItem =
+               [[NSMenuItem alloc] initWithTitle: title
+                                   action: @selector(selectWindow:)
+                                   keyEquivalent: keyEquivalent];
+           [windowItem setTarget: self];
+           [windowItem setTag: AngbandWindowMenuItemTagBase + i];
+           [windowsMenu addItem: windowItem];
+       }
+    }
+}
+
 /**
  *  Send a command to Angband via a menu item. This places the appropriate key
  * down events into the queue so that it seems like the user pressed them
@@ -4274,7 +4677,9 @@ static void prepare_paths_and_directories(void)
 {
     NSMenuItem *menuItem = (NSMenuItem *)sender;
     NSString *command = [self.commandMenuTagMap objectForKey: [NSNumber numberWithInteger: [menuItem tag]]];
-    NSInteger windowNumber = [((AngbandContext *)angband_term[0]->data)->primaryWindow windowNumber];
+    AngbandContext* context =
+       (__bridge AngbandContext*) (angband_term[0]->data);
+    NSInteger windowNumber = [context.primaryWindow windowNumber];
 
     /* Send a \ to bypass keymaps */
     NSEvent *escape = [NSEvent keyEventWithType: NSKeyDown
@@ -4308,42 +4713,49 @@ static void prepare_paths_and_directories(void)
  */
 - (void)prepareCommandMenu
 {
-    NSString *commandMenuPath = [[NSBundle mainBundle] pathForResource: @"CommandMenu" ofType: @"plist"];
-    NSArray *commandMenuItems = [[NSArray alloc] initWithContentsOfFile: commandMenuPath];
-    NSMutableDictionary *angbandCommands = [[NSMutableDictionary alloc] init];
-    NSString *tblname = @"CommandMenu";
-    NSInteger tagOffset = 0;
-
-    for( NSDictionary *item in commandMenuItems )
-    {
-        BOOL useShiftModifier = [[item valueForKey: @"ShiftModifier"] boolValue];
-        BOOL useOptionModifier = [[item valueForKey: @"OptionModifier"] boolValue];
-        NSUInteger keyModifiers = NSCommandKeyMask;
-        keyModifiers |= (useShiftModifier) ? NSShiftKeyMask : 0;
-        keyModifiers |= (useOptionModifier) ? NSAlternateKeyMask : 0;
-
-        NSString *lookup = [item valueForKey: @"Title"];
-       NSString *title = NSLocalizedStringWithDefaultValue(
-           lookup, tblname, [NSBundle mainBundle], lookup, @"");
-        NSString *key = [item valueForKey: @"KeyEquivalent"];
-        NSMenuItem *menuItem = [[NSMenuItem alloc] initWithTitle: title action: @selector(sendAngbandCommand:) keyEquivalent: key];
-        [menuItem setTarget: self];
-        [menuItem setKeyEquivalentModifierMask: keyModifiers];
-        [menuItem setTag: AngbandCommandMenuItemTagBase + tagOffset];
-        [self.commandMenu addItem: menuItem];
-        [menuItem release];
+    @autoreleasepool {
+       NSString *commandMenuPath =
+           [[NSBundle mainBundle] pathForResource: @"CommandMenu"
+                                  ofType: @"plist"];
+       NSArray *commandMenuItems =
+           [[NSArray alloc] initWithContentsOfFile: commandMenuPath];
+       NSMutableDictionary *angbandCommands =
+           [[NSMutableDictionary alloc] init];
+       NSString *tblname = @"CommandMenu";
+       NSInteger tagOffset = 0;
+
+       for( NSDictionary *item in commandMenuItems )
+       {
+           BOOL useShiftModifier =
+               [[item valueForKey: @"ShiftModifier"] boolValue];
+           BOOL useOptionModifier =
+               [[item valueForKey: @"OptionModifier"] boolValue];
+           NSUInteger keyModifiers = NSCommandKeyMask;
+           keyModifiers |= (useShiftModifier) ? NSShiftKeyMask : 0;
+           keyModifiers |= (useOptionModifier) ? NSAlternateKeyMask : 0;
+
+           NSString *lookup = [item valueForKey: @"Title"];
+           NSString *title = NSLocalizedStringWithDefaultValue(
+               lookup, tblname, [NSBundle mainBundle], lookup, @"");
+           NSString *key = [item valueForKey: @"KeyEquivalent"];
+           NSMenuItem *menuItem =
+               [[NSMenuItem alloc] initWithTitle: title
+                                   action: @selector(sendAngbandCommand:)
+                                   keyEquivalent: key];
+           [menuItem setTarget: self];
+           [menuItem setKeyEquivalentModifierMask: keyModifiers];
+           [menuItem setTag: AngbandCommandMenuItemTagBase + tagOffset];
+           [self.commandMenu addItem: menuItem];
+
+           NSString *angbandCommand = [item valueForKey: @"AngbandCommand"];
+           [angbandCommands setObject: angbandCommand
+                            forKey: [NSNumber numberWithInteger: [menuItem tag]]];
+           tagOffset++;
+       }
 
-        NSString *angbandCommand = [item valueForKey: @"AngbandCommand"];
-        [angbandCommands setObject: angbandCommand forKey: [NSNumber numberWithInteger: [menuItem tag]]];
-        tagOffset++;
+       self.commandMenuTagMap = [[NSDictionary alloc]
+                                    initWithDictionary: angbandCommands];
     }
-
-    [commandMenuItems release];
-
-    NSDictionary *safeCommands = [[NSDictionary alloc] initWithDictionary: angbandCommands];
-    self.commandMenuTagMap = safeCommands;
-    [safeCommands release];
-    [angbandCommands release];
 }
 
 - (void)awakeFromNib
@@ -4433,10 +4845,9 @@ static void prepare_paths_and_directories(void)
            key = [[NSString alloc] initWithUTF8String:graf->menuname];
            title = NSLocalizedStringWithDefaultValue(
                key, tblname, [NSBundle mainBundle], key, @"");
-        
+
            /* Make the item */
            NSMenuItem *item = [menu addItemWithTitle:title action:action keyEquivalent:@""];
-           [key release];
            [item setTag:graf->grafID];
        }
     }