Make impact reactor warmup sensable as heat (#4399)

* Make impact reactor warmup sensable as heat

* Update ImpactReactor.java

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

@@ -12,6 +12,7 @@ import mindustry.entities.*;
 import mindustry.game.EventType.*;
 import mindustry.gen.*;
 import mindustry.graphics.*;
+import mindustry.logic.*;
 import mindustry.ui.*;
 import mindustry.world.meta.*;
 
@@ -121,6 +122,12 @@ public class ImpactReactor extends PowerGenerator{
         public void drawLight(){
             Drawf.light(team, x, y, (110f + Mathf.absin(5, 5f)) * warmup, Tmp.c1.set(plasma2).lerp(plasma1, Mathf.absin(7f, 0.2f)), 0.8f * warmup);
         }
+        
+        @Override
+        public double sense(LAccess sensor){
+            if(sensor == LAccess.heat) return warmup;
+            return super.sense(sensor);
+        }
 
         @Override
         public void onDestroyed(){