impact drill progress

core/src/mindustry/graphics/Drawf.java

@@ -282,10 +282,11 @@ public class Drawf{
     
     /** Draws a sprite that should be light-wise correct, when rotated. Provided sprite must be symmetrical in shape. */
     public static void spinSprite(TextureRegion region, float x, float y, float r){
+        float a = Draw.getColor().a;
         r = Mathf.mod(r, 90f);
         Draw.rect(region, x, y, r);
-        Draw.alpha(r / 90f);
+        Draw.alpha(r / 90f*a);
         Draw.rect(region, x, y, r - 90f);
-        Draw.alpha(1f);
+        Draw.alpha(a);
     }
 }