draw() modified, Wall now shows stargates.

cicaprojekt/WallDrawer.java

@@ -13,7 +13,24 @@ public class WallDrawer extends ImagePanel implements Drawer {
     }
  
     @Override
-    public void draw() {
+    public void draw() throws IOException {
+        switch(wall.getStargate().getName()){
+            case "Blue Stargate":
+                changeImage("BlueStargate.png");
+                break;
+            case "Yellow Stargate":
+                changeImage("YellowStargate.png");
+                break;
+            case "Red Stargate":
+                changeImage("RedStargate.png");
+                break;
+            case "GreenStargate":
+                changeImage("GreenStargate");
+                break;
+            default:
+                changeImage("Wall.png");
+                break;
+        }
             
         setVisible(true);