v0.6.0: lots more class structure changes to rooms

SPD-classes/src/main/java/com/watabou/utils/Rect.java

@@ -54,7 +54,7 @@ public class Rect {
 	}
 	
 	public int square() {
-		return (right - left) * (bottom - top);
+		return width() * height();
 	}
 	
 	public Rect set( int left, int top, int right, int bottom ) {
@@ -69,6 +69,18 @@ public class Rect {
 		return set( rect.left, rect.top, rect.right, rect.bottom );
 	}
 	
+	public Rect setPos( int x, int y ) {
+		return set( x, y, x + (right - left), y + (bottom - top));
+	}
+	
+	public Rect shift( int x, int y ) {
+		return set( left+x, top+y, right+x, bottom+y );
+	}
+	
+	public Rect resize( int w, int h ){
+		return set( left, top, left+w, top+h);
+	}
+	
 	public boolean isEmpty() {
 		return right <= left || bottom <= top;
 	}