Disabled missile unit collisions

core/src/mindustry/ai/types/MissileAI.java

@@ -11,24 +11,22 @@ public class MissileAI extends AIController{
 
         if(target != null){
             unit.lookAt(target);
-
-            var build = unit.buildOn();
-
-            //kill instantly on building contact
-            //TODO kill on target unit contact too
-            if(build != null && build == target){
-                unit.kill();
-            }
         }
 
         //move forward forever
         unit.moveAt(vec.trns(unit.rotation, unit.speed()));
 
+        var build = unit.buildOn();
+
+        //kill instantly on enemy building contact
+        if(build != null && build.team != unit.team){
+            unit.kill();
+        }
     }
 
     @Override
     public boolean retarget(){
-        //more frequent retarget. TODO lag?
+        //more frequent retarget. TODO won't this lag?
         return timer.get(timerTarget, 10f);
     }
 }