X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Fgame_mm%2Fmm_main.h;fp=src%2Fgame_mm%2Fmm_main.h;h=b9dd47a80befeace95c44257975565f718c0f201;hb=96c47c30116d9306216622ae7f5e8f4583cc3dbc;hp=96ff6f28247cc16018cce53c8a4f8388a425e4f3;hpb=3d59a9398925c218223ce77701c0cda3fe6c1d88;p=rocksndiamonds.git

diff --git a/src/game_mm/mm_main.h b/src/game_mm/mm_main.h
index 96ff6f28..b9dd47a8 100644
--- a/src/game_mm/mm_main.h
+++ b/src/game_mm/mm_main.h
@@ -715,7 +715,7 @@ extern int		num_element_info;
 #define IS_22_5_ANGLE(angle)	((angle) % 2)
 #define IS_90_ANGLE(angle)	(!((angle) % 4))
 #define IS_HORIZ_ANGLE(angle)	(!((angle) % 8))
-#define IS_VERT_ANGLE(angle)	((angle) % 8)
+#define IS_VERT_ANGLE(angle)	(!(((angle) + 4) % 8))
 
 // mirror angles
 #define ANG_MIRROR_0		0