Add force in direction of collision

Question

i am trying to make a pool/billiards game and am trying to add a force in the opposite direction of a collision. this is what ive come up with but it does not work. please help me out using System.Collections; using System.Collections.Generic; using UnityEngine; using System.Text; using UnityEngine.EventSystems;

 public class Cue : MonoBehaviour
 {
 
 
     public Rigidbody CueRB;
 
     //    // Start is called before the first frame update
     void Start()
     {
      
     }
 
 //    // Update is called once per frame
     void Update()
     {
         if(Rigidbody.OnCollisionEnter(Collision))
         {
             CueRB.AddForce(Collision * Time.deltaTime, 0, Collision * Time.deltaTime);
         }
        
 
         
     }
 }

Answer 1

Answer by Captain_Pineapple · Mar 22 at 08:32 AM

Please search for some Collision Code examples and take a close look at how that is done properly. This just is not how you implement the callback "OnCollisionEnter".

What you need instead is something like this:

  public void OnCollisionEnter(Collision col)
          {
              CueRB.AddForce(col.GetContact(0).normal);
          }

Please also try to understand how function arguments work. You always need a type (Collision) followed by a name (col). Just writing "Collision" will not do the trick.

In addition to that please try to read into Time.deltaTime usage. If you have a continuous force or movement - multiply with Time.deltaTime. If you have single instances of force being applied then do not multiply with Time.deltatime.

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Add force in direction of collision

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