Cleanup

core/src/mindustry/entities/def/ChildComp.java

@@ -0,0 +1,29 @@
+package mindustry.entities.def;
+
+import arc.util.ArcAnnotate.*;
+import mindustry.annotations.Annotations.*;
+import mindustry.gen.*;
+
+@Component
+abstract class ChildComp implements Posc{
+    transient float x, y;
+
+    private @Nullable Posc parent;
+    private float offsetX, offsetY;
+
+    @Override
+    public void add(){
+        if(parent != null){
+            offsetX = x - parent.getX();
+            offsetY = y - parent.getY();
+        }
+    }
+
+    @Override
+    public void update(){
+        if(parent != null){
+            x = parent.getX() + offsetX;
+            y = parent.getY() + offsetY;
+        }
+    }
+}