My Unity Collision Wont Trigger Even with Rigidbody Added

Question

I am new to Unity and I have set up a scene where if my player (An Aircraft) collides with the box collider then it will trigger a message. But whenever it collides it does not show up any message.

Heres the script

     public GameObject cube;
 
     void OnCollisionEnter(Collision col)
     {
         if (col.gameObject.CompareTag("Player"))
         {
             Debug.Log("Hi");
         }
     }

Answer 1

Answer by Zoedingl · Jun 21, 2020 at 01:48 PM

Has the box collider also a kinematic Rigidbody? And has the player also a collider and a Rigidbody? You must add these.

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Answer 2

Answer by exp626stitch · Dec 16, 2020 at 06:42 PM

@manavento736 If the object is moving fast:

 Vector3 lastPos;
 
 public void Start() {
 lastPos = transform.position;
 }
 
 public void FixedUpdate()
 {
 lastPos = transform.position;
 
 RaycastHit[] hits = Physics.RaycastAll(new Ray(lastPos, (transform.position - lastPos).normalized), (transform.position - lastPos).magnitude);
 
 //Do something with it using hit
 transform.position = hit[1].point;
 }

If a collision dosnt occur in a visible frame, it didnt happen, so the raycast goes between where you were and where you are, and if there is a collision, then it teleports the object to the collision point, although I would recommend adding a offset based on half your size.

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My Unity Collision Wont Trigger Even with Rigidbody Added

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