From: Eric Branlund <ebranlund@fastmail.com>
Date: Sun, 23 Feb 2020 19:19:06 +0000 (-0800)
Subject: Adjusted logic in Term_pict_cocoa() to handle big tile mode.
X-Git-Tag: vmacos2.2.1-7c~5
X-Git-Url: http://git.osdn.net/view?p=hengbandforosx%2Fhengbandosx.git;a=commitdiff_plain;h=1d123c5c5efc78beaa93d263123fe97150979f4d

Adjusted logic in Term_pict_cocoa() to handle big tile mode.
---

diff --git a/src/main-cocoa.m b/src/main-cocoa.m
index d47ddf867..e4b4834db 100644
--- a/src/main-cocoa.m
+++ b/src/main-cocoa.m
@@ -3016,12 +3016,18 @@ static errr Term_pict_cocoa(int x, int y, int n, TERM_COLOR *ap,
     
     AngbandContext* angbandContext = Term->data;
     int any_change = 0;
+    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);
@@ -3040,12 +3046,12 @@ static errr Term_pict_cocoa(int x, int y, int n, TERM_COLOR *ap,
     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;
+    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 + n;
-	 ++pc) {
+	 pc != angbandContext->changes->rows[y]->cell_changes + x + step * n;
+	 pc += step) {
 	TERM_COLOR a = *ap++;
 	char c = *cp++;
 	TERM_COLOR ta = *tap++;