Decal cleanup

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

@@ -801,6 +801,18 @@ public class EntityComps{
         }
     }
 
+    @Component
+    abstract class DecalComp implements Drawc, Timedc, Rotc, Posc{
+        Color color = new Color(1, 1, 1, 1);
+        TextureRegion region;
+
+        public void draw(){
+            Draw.color(color);
+            Draw.rect(region, getX(), getY(), getRotation());
+            Draw.color();
+        }
+    }
+
     @Component
     abstract class DrawLightComp implements Drawc{
         void drawLight(){}

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

@@ -13,4 +13,7 @@ class EntityDefs{
 
     @EntityDef({EffectComp.class})
     class EffectDef{}
+
+    @EntityDef({DecalComp.class})
+    class DecalDef{}
 }