improved scanning laser outside level, but inside visible playfield area

This change adds checking that not only the current, but also the next
step of the laser beam is still inside the visible playfield area.

This is a correction of commit dea6197b.

diff --git a/src/game_mm/mm_game.c b/src/game_mm/mm_game.c
index 0aaaaddaa3e84da2e47e99eff4416dcb81300fec..87ee350cc78027170fcc03aaeeeae3a87bbddbda 100644 (file)
--- a/src/game_mm/mm_game.c
+++ b/src/game_mm/mm_game.c
@@ -1073,9 +1073,13 @@ static void ScanLaser(void)
 
     if (!IN_LEV_FIELD(ELX, ELY))
     {
-      // check if laser is still inside visible playfield area
-      if (cSX + LX >= REAL_SX && cSX + LX < REAL_SX + FULL_SXSIZE &&
-         cSY + LY >= REAL_SY && cSY + LY < REAL_SY + FULL_SYSIZE)
+      // laser next step position
+      int x = cSX + LX + XS;
+      int y = cSY + LY + YS;
+
+      // check if next step of laser is still inside visible playfield area
+      if (x >= REAL_SX && x < REAL_SX + FULL_SXSIZE &&
+         y >= REAL_SY && y < REAL_SY + FULL_SYSIZE)
       {
        // go on with another step
        LX += XS;