--- a/project_files/HedgewarsMobile/Classes/CGPointUtils.h	Thu Jun 24 01:08:57 2010 +0200
+++ b/project_files/HedgewarsMobile/Classes/CGPointUtils.h	Sat Jun 26 04:36:04 2010 +0200
@@ -9,9 +9,12 @@
 
 #import <CoreGraphics/CoreGraphics.h>
 
-#define degreesToRadian(x) (M_PI * x / 180.0)
+#define degreesToRadian(x)  (M_PI * x / 180.0)
 #define radiansToDegrees(x) (180.0 * x / M_PI)
 
+#define HWX(x) (int)(x-screen.size.height/2)
+#define HWY(x) (int)(screen.size.width-x)
+
 CGFloat distanceBetweenPoints (CGPoint first, CGPoint second);
 CGFloat angleBetweenPoints(CGPoint first, CGPoint second);
 CGFloat angleBetweenLines(CGPoint line1Start, CGPoint line1End, CGPoint line2Start, CGPoint lin2End);