Editor background drawing should be based on the center of the view area instead of the upper-left corner

Co-authored-by: r3cp3ct <45179536+r3cp3ct@users.noreply.github.com>
Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

src/sig/RabiClone.java

@@ -2,11 +2,8 @@ package sig;
 
 import javax.swing.JFrame;
 
-import net.java.games.input.AbstractController;
 import net.java.games.input.Controller;
 import net.java.games.input.ControllerEnvironment;
-import net.java.games.input.ControllerEvent;
-import net.java.games.input.ControllerListener;
 
 import java.util.ArrayList;
 import java.util.Arrays;

src/sig/objects/EditorRenderer.java

@@ -303,5 +303,18 @@ public class EditorRenderer extends LevelRenderer{
         }
     }
 
-    
+    @Override
+    public void drawBackground(byte[] p) {
+        int screenX = (int)(getX()+RabiClone.BASE_WIDTH/2)/Tile.TILE_WIDTH;
+        int screenY = (int)(getY()+RabiClone.BASE_HEIGHT/2)/Tile.TILE_HEIGHT;
+        Background targetBackground = RabiClone.CURRENT_MAP.getBackground(screenX, screenY);
+        for (int y=0;y<RabiClone.BASE_HEIGHT;y++) {
+            for (int x=0;x<RabiClone.BASE_WIDTH;x++) {
+                int index = y*RabiClone.BASE_WIDTH+x;
+                p[index] = targetBackground.getPixels()[
+                    ((y+(int)(getY()*targetBackground.getScrollSpeed()))%targetBackground.getHeight())*targetBackground.getWidth()+((x+(int)(getX()*targetBackground.getScrollSpeed()))%targetBackground.getWidth())
+                ];
+            }
+        }
+    }
 }

src/sig/objects/weapons/KnifeSwing.java

@@ -5,7 +5,6 @@ import sig.engine.Panel;
 import sig.engine.Transform;
 import sig.objects.actor.AttachableObject;
 import sig.objects.actor.PhysicsObject;
-import sig.objects.actor.State;
 import sig.engine.objects.AnimatedObject;
 import sig.engine.objects.Object;
 

src/sig/objects/weapons/KnifeSwing2.java

@@ -5,7 +5,6 @@ import sig.engine.Panel;
 import sig.engine.Transform;
 import sig.objects.actor.AttachableObject;
 import sig.objects.actor.PhysicsObject;
-import sig.objects.actor.State;
 import sig.engine.objects.AnimatedObject;
 import sig.engine.objects.Object;