Applied roever's screen effects patch (#602595) and fixed LethalWP's Makefile ;)

svn-id: r4909

1 files changed, 4 insertions, 0 deletions

diff --git a/common/system.h b/common/system.h
index 4bac597eb1..c0fabec1b4 100644
--- a/common/system.h
+++ b/common/system.h
@@ -92,6 +92,10 @@ public:
 	// The screen will not be updated to reflect the new bitmap
 	virtual void copy_rect(const byte *buf, int pitch, int x, int y, int w, int h) = 0;
 
+	// Moves the screen content around by the given amount of pixels
+	// but only the top height pixel rows, the rest stays untouched
+	virtual void move_screen(int dx, int dy, int height) = 0;
+
 	// Update the dirty areas of the screen
 	virtual void update_screen() = 0;