Merge pull request #1514 from Arkanic/patch-7

make batteries glow based on power contents (a redo that works)

core/src/mindustry/world/blocks/power/Battery.java

@@ -1,10 +1,41 @@
 package mindustry.world.blocks.power;
 
+import arc.*;
+import arc.graphics.Color;
+import arc.graphics.g2d.*;
+import mindustry.world.*;
+
 public class Battery extends PowerDistributor{
 
+    public TextureRegion baseRegion;
+
+    public Color emptyLightColor = Color.valueOf("6e7080");
+    public Color fullLightColor = Color.valueOf("fb9567");
+
     public Battery(String name){
         super(name);
         outputsPower = true;
         consumesPower = true;
     }
+
+    @Override
+    public void load(){
+        super.load();
+
+        baseRegion = Core.atlas.find(name + "-base");
+    }
+
+    @Override
+    public void draw(Tile tile){
+        Draw.color(emptyLightColor, fullLightColor, tile.entity.power.status);
+        Draw.rect(baseRegion, tile.drawx(), tile.drawy());
+        Draw.reset();
+
+        super.draw(tile);
+    }
+
+    @Override
+    public TextureRegion[] generateIcons(){
+        return new TextureRegion[]{Core.atlas.find(name + "-icon")};
+    }
 }