Index: apps/plugins/brickmania.c
===================================================================
--- apps/plugins/brickmania.c	(revision 22638)
+++ apps/plugins/brickmania.c	(working copy)
@@ -274,27 +274,28 @@
  *  up/down as needed based on the screen height.
  */
 #define SPEED_SCALE GAMESCREEN_HEIGHT/176
-
+/* Don't use SPEED_CONVERT for negative speeds! */
+#define SPEED_CONVERT(x) (x*SPEED_SCALE>0?x*SPEED_SCALE:1)
 /* These are all used as ball speeds depending on where the ball hit the
  *  paddle.
  */
-#define SPEED_1Q_X  ( 6 * SPEED_SCALE)
-#define SPEED_1Q_Y  (-2 * SPEED_SCALE)
-#define SPEED_2Q_X  ( 4 * SPEED_SCALE)
-#define SPEED_2Q_Y  (-3 * SPEED_SCALE)
-#define SPEED_3Q_X  ( 3 * SPEED_SCALE)
-#define SPEED_3Q_Y  (-4 * SPEED_SCALE)
-#define SPEED_4Q_X  ( 2 * SPEED_SCALE)
-#define SPEED_4Q_Y  (-4 * SPEED_SCALE)
+#define SPEED_1Q_X  SPEED_CONVERT(6)
+#define SPEED_1Q_Y  (-SPEED_CONVERT(2))
+#define SPEED_2Q_X  SPEED_CONVERT(4)
+#define SPEED_2Q_Y  (-SPEED_CONVERT(3))
+#define SPEED_3Q_X  SPEED_CONVERT(3)
+#define SPEED_3Q_Y  (-SPEED_CONVERT(4))
+#define SPEED_4Q_X  SPEED_CONVERT(2)
+#define SPEED_4Q_Y  (-SPEED_CONVERT(4))
 
 /* This is used to determine the speed of the paddle */
-#define SPEED_PAD   ( 8 * SPEED_SCALE)
+#define SPEED_PAD   SPEED_CONVERT(8)
 
 /* This defines the speed that the powerups drop */
-#define SPEED_POWER ( 2 * SPEED_SCALE)
+#define SPEED_POWER SPEED_CONVERT(2)
 
 /* This defines the speed that the shot moves */
-#define SPEED_FIRE  ( 4 * SPEED_SCALE)
+#define SPEED_FIRE  SPEED_CONVERT(4)
 
 /*calculate paddle y-position */
 #define PAD_POS_Y           (GAMESCREEN_HEIGHT - PAD_HEIGHT - 1)