ifﾊｸ､ﾎ･ﾟ･ｹｽ､ﾀｵ. ･ｳ･皈ﾈﾄﾉｲﾃ.

diff --git a/src/cave.c b/src/cave.c
index 55ad5dd..0db6e8f 100644 (file)
--- a/src/cave.c
+++ b/src/cave.c
@@ -3210,9 +3210,13 @@ static void mon_lite_hack(int y, int x)
                if (mon_invis) return;
 
                /* Hack -- Prevent monster lite leakage in walls */
+
+               /* Horizontal walls between player and a monster */
                if (((y < py) && (y > mon_fy)) || ((y > py) && (y < mon_fy)))
                {
                        midpoint = (px + mon_fx) >> 1;
+
+                       /* Only first wall viewed from mid-x is lit */
                        if (x < midpoint)
                        {
                                if (!cave_floor_bold(y, x + 1)) return;
@@ -3222,9 +3226,13 @@ static void mon_lite_hack(int y, int x)
                                if (!cave_floor_bold(y, x - 1)) return;
                        }
                }
-               else if (((x < px) && (x > mon_fx)) || ((x > px) && (x < mon_fx)))
+
+               /* Vertical walls between player and a monster */
+               if (((x < px) && (x > mon_fx)) || ((x > px) && (x < mon_fx)))
                {
                        midpoint = (py + mon_fy) >> 1;
+
+                       /* Only first wall viewed from mid-y is lit */
                        if (y < midpoint)
                        {
                                if (!cave_floor_bold(y + 1, x)) return;
@@ -3281,9 +3289,13 @@ static void mon_dark_hack(int y, int x)
                if (mon_invis) return;
 
                /* Hack -- Prevent monster dark lite leakage in walls */
+
+               /* Horizontal walls between player and a monster */
                if (((y < py) && (y > mon_fy)) || ((y > py) && (y < mon_fy)))
                {
                        midpoint = (px + mon_fx) >> 1;
+
+                       /* Only first wall viewed from mid-x is darkened */
                        if (x < midpoint)
                        {
                                if (!cave_floor_bold(y, x + 1)) return;
@@ -3293,9 +3305,13 @@ static void mon_dark_hack(int y, int x)
                                if (!cave_floor_bold(y, x - 1)) return;
                        }
                }
-               else if (((x < px) && (x > mon_fx)) || ((x > px) && (x < mon_fx)))
+
+               /* Vertical walls between player and a monster */
+               if (((x < px) && (x > mon_fx)) || ((x > px) && (x < mon_fx)))
                {
                        midpoint = (py + mon_fy) >> 1;
+
+                       /* Only first wall viewed from mid-y is darkened */
                        if (y < midpoint)
                        {
                                if (!cave_floor_bold(y + 1, x)) return;