added flag to level files for using "game of life" bugs

[rocksndiamonds.git] / src / game.c

diff --git a/src/game.c b/src/game.c
index 3255b4280abc8bc74978e66cd36df44bb07fea33..5fa57e59c47c5909ca261a30abff88bf539f2419 100644 (file)
--- a/src/game.c
+++ b/src/game.c
@@ -3595,7 +3595,7 @@ void InitGame(void)
 
   SCAN_PLAYFIELD(x, y)
   {
-    Feld[x][y] = level.field[x][y];
+    Feld[x][y] = Last[x][y] = level.field[x][y];
     MovPos[x][y] = MovDir[x][y] = MovDelay[x][y] = 0;
     ChangeDelay[x][y] = 0;
     ChangePage[x][y] = -1;
@@ -8929,13 +8929,28 @@ static void Life(int ax, int ay)
       if (!IN_LEV_FIELD(x, y) || (x == xx && y == yy))
        continue;
 
-      if (((Feld[x][y] == element ||
-           (element == EL_GAME_OF_LIFE && IS_PLAYER(x, y))) &&
-          !Stop[x][y]) ||
-         (IS_FREE(x, y) && Stop[x][y]))
+      boolean is_player_cell = (element == EL_GAME_OF_LIFE && IS_PLAYER(x, y));
+      boolean is_neighbour = FALSE;
+
+      if (level.use_life_bugs)
+       is_neighbour =
+         (((Feld[x][y] == element || is_player_cell) && !Stop[x][y]) ||
+          (IS_FREE(x, y)                             &&  Stop[x][y]));
+      else
+       is_neighbour =
+         (Last[x][y] == element || is_player_cell);
+
+      if (is_neighbour)
        num_neighbours++;
     }
 
+    boolean is_free = FALSE;
+
+    if (level.use_life_bugs)
+      is_free = (IS_FREE(xx, yy));
+    else
+      is_free = (IS_FREE(xx, yy) && Last[xx][yy] == EL_EMPTY);
+
     if (xx == ax && yy == ay)          /* field in the middle */
     {
       if (num_neighbours < life_parameter[0] ||
@@ -8948,7 +8963,7 @@ static void Life(int ax, int ay)
        changed = TRUE;
       }
     }
-    else if (IS_FREE(xx, yy) || CAN_GROW_INTO(Feld[xx][yy]))
+    else if (is_free || CAN_GROW_INTO(Feld[xx][yy]))
     {                                  /* free border field */
       if (num_neighbours >= life_parameter[2] &&
          num_neighbours <= life_parameter[3])
@@ -11733,6 +11748,8 @@ void GameActions_RND(void)
 
   SCAN_PLAYFIELD(x, y)
   {
+    Last[x][y] = Feld[x][y];
+
     ChangeCount[x][y] = 0;
     ChangeEvent[x][y] = -1;