drawCracks and createRubble (#6989)

core/src/mindustry/entities/comp/BuildingComp.java

@@ -1108,7 +1108,7 @@ abstract class BuildingComp implements Posc, Teamc, Healthc, Buildingc, Timerc,
     }
 
     public void drawCracks(){
-        if(!damaged() || block.size > BlockRenderer.maxCrackSize) return;
+        if(!block.drawCracks || !damaged() || block.size > BlockRenderer.maxCrackSize) return;
         int id = pos();
         TextureRegion region = renderer.blocks.cracks[block.size - 1][Mathf.clamp((int)((1f - healthf()) * BlockRenderer.crackRegions), 0, BlockRenderer.crackRegions-1)];
         Draw.colorl(0.2f, 0.1f + (1f - healthf())* 0.6f);
@@ -1322,7 +1322,7 @@ abstract class BuildingComp implements Posc, Teamc, Healthc, Buildingc, Timerc,
 
         Damage.dynamicExplosion(x, y, flammability, explosiveness * 3.5f, power, tilesize * block.size / 2f, state.rules.damageExplosions, block.destroyEffect);
 
-        if(!floor().solid && !floor().isLiquid){
+        if(block.createRubble && !floor().solid && !floor().isLiquid){
             Effect.rubble(x, y, block.size);
         }
     }

core/src/mindustry/world/Block.java

@@ -166,6 +166,10 @@ public class Block extends UnlockableContent implements Senseable{
     public float baseExplosiveness = 0f;
     /** bullet that this block spawns when destroyed */
     public @Nullable BulletType destroyBullet = null;
+    /** whether cracks are drawn when this block is damaged */
+    public boolean drawCracks = true;
+    /** whether rubble is created when this block is destroyed */
+    public boolean createRubble = true;
     /** whether this block can be placed on edges of liquids. */
     public boolean floating = false;
     /** multiblock size */