Question by Arpand · Jun 20, 2017 at 09:54 AM · instantiate multiplayer collision detection shooting ignore collisions

How to avoid collisions using InstanceID

I am trying to make a multiplayer game. The main problem is the bullets. The bullets spawn at the gun barrel on the drone(the player) which is inside its box collider. There is also another large collider that's a sphere to act as a targeting threshold for players. I need the bullet to avoid collisions with those 2 colliders. Right now this is how I'm doing it:

         if (Input.GetKeyDown(KeyCode.Space))
         {
             var bullet = bulletPrefab;
             bullet.GetComponent<Bullet>().spawnEntity = gameObject.transform.GetInstanceID();
             bullet.GetComponent<Bullet>().spawnEntityTracker = tracker.transform.GetInstanceID();
             Instantiate(bullet, transform.position, transform.rotation);
         }

When the player fires the bullet, the bullet has the instance IDs of the objects it's not supposed to hit assigned. The bullet is then instantiated.

         void OnTriggerEnter(Collider other)
 {
     if ( other.gameObject.transform.GetInstanceID() != spawnEntity && other.gameObject.transform.GetInstanceID() != spawnEntityTracker && other.gameObject.tag != "Bullet")
     {
         Debug.Log(other.gameObject);
         Instantiate(spark, transform.position, transform.rotation);
         Destroy(gameObject);
     }
 }

When the bullet hits something it checks if the entity's transform's instance ID is different than the ones it's supposed to ignore.

This doesn't seem to work. I paused the editor and checked if the bullets recorded the instance IDs properly. They did. Even so, they explode when hitting the player that spawned them.

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