Balancing, fixes, general improvements

core/src/io/anuke/mindustry/entities/effect/Decal.java

@@ -17,7 +17,7 @@ public abstract class Decal extends TimedEntity implements BelowLiquidTrait, Dra
 
     @Override
     public float lifetime(){
-        return 8200f;
+        return 3600;
     }
 
     @Override

core/src/io/anuke/mindustry/entities/effect/RubbleDecal.java

@@ -25,6 +25,11 @@ public class RubbleDecal extends Decal{
         decal.add();
     }
 
+    @Override
+    public float lifetime(){
+        return 8200f;
+    }
+
     @Override
     public void drawDecal(){
         if(!Core.atlas.isFound(region)){

core/src/io/anuke/mindustry/entities/effect/ScorchDecal.java

@@ -34,7 +34,7 @@ public class ScorchDecal extends Decal{
 
     @Override
     public void drawDecal(){
-        for(int i = 0; i < 5; i++){
+        for(int i = 0; i < 3; i++){
             TextureRegion region = regions[Mathf.randomSeed(id - i, 0, scorches - 1)];
             float rotation = Mathf.randomSeed(id + i, 0, 360);
             float space = 1.5f + Mathf.randomSeed(id + i + 1, 0, 20) / 10f;