Cleanup, optimization

core/src/mindustry/entities/GroupDefs.java

@@ -0,0 +1,42 @@
+package mindustry.entities;
+
+import mindustry.annotations.Annotations.*;
+import mindustry.gen.*;
+
+class GroupDefs{
+
+    @GroupDef(value = Entityc.class, mapping = true)
+    class gall{
+
+    }
+
+    @GroupDef(value = Playerc.class, mapping = true)
+    class gplayer{
+
+    }
+
+    @GroupDef(value = Bulletc.class, spatial = true, collide = true)
+    class gbullet{
+
+    }
+
+    @GroupDef(value = Unitc.class, spatial = true, mapping = true)
+    class gunit{
+
+    }
+
+    @GroupDef(Tilec.class)
+    class gtile{
+
+    }
+
+    @GroupDef(value = Syncc.class, mapping = true)
+    class gsync{
+
+    }
+
+    @GroupDef(Drawc.class)
+    class gdraw{
+
+    }
+}