rnd-20020917-1-src

[rocksndiamonds.git] / src / libgame / system.h

diff --git a/src/libgame/system.h b/src/libgame/system.h
index 9cebd02dda852d0c94755475d42a89589bcd2dc5..5072584ee6441e9e1cdd6d68513b701072ede24b 100644 (file)
--- a/src/libgame/system.h
+++ b/src/libgame/system.h
@@ -67,17 +67,26 @@
 #define DEFAULT_KEY_TOGGLE_PAUSE KSYM_space
 
 /* values for move directions and special "button" keys */
+#define MV_BIT_LEFT            0
+#define MV_BIT_RIGHT           1
+#define MV_BIT_UP              2
+#define MV_BIT_DOWN            3
+
 #define MV_NO_MOVING           0
-#define MV_LEFT                        (1 << 0)
-#define MV_RIGHT               (1 << 1)
-#define MV_UP                  (1 << 2)
-#define MV_DOWN                        (1 << 3)
+#define MV_LEFT                        (1 << MV_BIT_LEFT)
+#define MV_RIGHT               (1 << MV_BIT_RIGHT)
+#define MV_UP                  (1 << MV_BIT_UP)
+#define MV_DOWN                        (1 << MV_BIT_DOWN)
 #define KEY_BUTTON_1           (1 << 4)
 #define KEY_BUTTON_2           (1 << 5)
 #define KEY_MOTION             (MV_LEFT | MV_RIGHT | MV_UP | MV_DOWN)
 #define KEY_BUTTON             (KEY_BUTTON_1 | KEY_BUTTON_2)
 #define KEY_ACTION             (KEY_MOTION | KEY_BUTTON)
 
+#define LOG_MV_DIR(x)          ((x) == MV_LEFT  ? MV_BIT_LEFT  :       \
+                                (x) == MV_RIGHT ? MV_BIT_RIGHT :       \
+                                (x) == MV_UP    ? MV_BIT_UP    : MV_BIT_DOWN)
+
 /* values for button status */
 #define MB_NOT_PRESSED         FALSE
 #define MB_NOT_RELEASED                TRUE