Had a bit of time today and worked on supertux:

[supertux.git] / lib / video / drawing_context.cpp

diff --git a/lib/video/drawing_context.cpp b/lib/video/drawing_context.cpp
index 5c98f13..bba6d36 100644 (file)
--- a/lib/video/drawing_context.cpp
+++ b/lib/video/drawing_context.cpp
@@ -22,10 +22,10 @@
 #include <cassert>
 #include <iostream>
 
-#include "../video/drawing_context.h"
-#include "../video/surface.h"
-#include "../app/globals.h"
-#include "../video/font.h"
+#include "drawing_context.h"
+#include "surface.h"
+#include "app/globals.h"
+#include "font.h"
 
 using namespace SuperTux;
 
@@ -79,6 +79,22 @@ DrawingContext::draw_surface_part(const Surface* surface, const Vector& source,
   surfacepartrequest->size = size;
   surfacepartrequest->source = source;
   surfacepartrequest->surface = surface;
+
+  // clip on screen borders
+  if(request.pos.x < 0) {
+    surfacepartrequest->size.x += request.pos.x;
+    if(surfacepartrequest->size.x <= 0)
+      return;
+    surfacepartrequest->source.x -= request.pos.x;
+    request.pos.x = 0;
+  }
+  if(request.pos.y < 0) {
+    surfacepartrequest->size.y += request.pos.y;
+    if(surfacepartrequest->size.y <= 0)
+      return;
+    surfacepartrequest->source.y -= request.pos.y;
+    request.pos.y = 0;
+  }
   request.request_data = surfacepartrequest;
 
   drawingrequests.push_back(request);