Fixed linux directions being inverted.

libsdl-org · Jul 7, 2008 · f9a5701 · f9a5701
1 parent aec0052
commit f9a5701
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/include/SDL_haptic.h b/include/SDL_haptic.h
@@ -291,7 +291,7 @@ typedef struct _SDL_Haptic SDL_Haptic;
  *                    ^
  *                    |
  *                    |
- * (1)  East <----[ HAPTIC ]----> West (-1)
+ * (1)  West <----[ HAPTIC ]----> East (-1)
  *                    |
  *                    |
  *                    v

diff --git a/src/haptic/linux/SDL_syshaptic.c b/src/haptic/linux/SDL_syshaptic.c
@@ -341,7 +341,8 @@ SDL_SYS_ToDirection( SDL_HapticDirection * dir )
 
    switch (dir->type) {
       case SDL_HAPTIC_POLAR:
-         tmp = ((dir->dir[0] % 36000) * 0xFFFF) / 36000;
+         /* Linux directions are inverted. */
+         tmp = (((18000 + dir->dir[0]) % 36000) * 0xFFFF) / 36000;
          return (Uint16) tmp;
          break;
       case SDL_HAPTIC_CARTESIAN: