Fix #6949 (#6988)

* Fix #6949

* No point in calculating if it already does no damage

Also don't show damage stat if it deals no damage.

Co-authored-by: Anuken <arnukren@gmail.com>

core/src/mindustry/world/blocks/defense/turrets/BaseTurret.java

@@ -83,5 +83,9 @@ public class BaseTurret extends Block{
         public void drawSelect(){
             Drawf.dashCircle(x, y, range(), team.color);
         }
+
+        public float estimateDps(){
+            return 0f;
+        }
     }
 }

core/src/mindustry/world/blocks/defense/turrets/TractorBeamTurret.java

@@ -58,7 +58,7 @@ public class TractorBeamTurret extends BaseTurret{
 
         stats.add(Stat.targetsAir, targetAir);
         stats.add(Stat.targetsGround, targetGround);
-        stats.add(Stat.damage, damage * 60f, StatUnit.perSecond);
+        if(damage > 0) stats.add(Stat.damage, damage * 60f, StatUnit.perSecond);
     }
 
     @Override
@@ -137,6 +137,12 @@ public class TractorBeamTurret extends BaseTurret{
             return super.shouldConsume() && target != null;
         }
 
+        @Override
+        public float estimateDps(){
+            if(!any || damage <= 0) return 0f;
+            return damage * 60f * efficiency * coolantMultiplier;
+        }
+
         @Override
         public void draw(){
             Draw.rect(baseRegion, x, y);

core/src/mindustry/world/blocks/defense/turrets/Turret.java

@@ -214,6 +214,7 @@ public class Turret extends ReloadTurret{
         public float heatReq;
         public float[] sideHeat = new float[4];
 
+        @Override
         public float estimateDps(){
             if(!hasAmmo()) return 0f;
             return shoot.shots / reload * 60f * (peekAmmo() == null ? 0f : peekAmmo().estimateDPS()) * potentialEfficiency * timeScale;