From: Holger Schemel <info@artsoft.org>
Date: Wed, 22 Apr 2020 22:22:42 +0000 (+0200)
Subject: replaced a few bitmask operations by modulo operations
X-Git-Tag: 4.2.0.0~38
X-Git-Url: https://git.artsoft.org/?a=commitdiff_plain;h=9a7d321bb6509e30df5f165472eec39f8fc6c243;p=rocksndiamonds.git

replaced a few bitmask operations by modulo operations
---

diff --git a/src/game_em/logic.c b/src/game_em/logic.c
index 6d6f0e1b..de3966c1 100644
--- a/src/game_em/logic.c
+++ b/src/game_em/logic.c
@@ -13,7 +13,7 @@
 #define ACID_PLAYER	/* player gets killed by acid, but without explosion */
 
 #define RANDOM_RAW	(seed = seed << 31 | seed >> 1)
-#define RANDOM(x)	(RANDOM_RAW & (x - 1))
+#define RANDOM(x)	(RANDOM_RAW % x)
 
 static short **cave, **next, **boom;
 static unsigned int seed;
@@ -151,7 +151,7 @@ static void Lboom_eater(int x, int y)
   boom[x][y+1]   = lev.eater_array[lev.eater_pos][7];
   boom[x+1][y+1] = lev.eater_array[lev.eater_pos][8];
 
-  lev.eater_pos = (lev.eater_pos + 1) & 7;
+  lev.eater_pos = (lev.eater_pos + 1) % 8;
 
 #if PLAY_ELEMENT_SOUND
   play_element_sound(x, y, SOUND_boom, Xeater_n);