addforce to rigidbody when hit

Question

Hi,

I want to add force to the player rigidbody backwards.

So if a creature hits me i get thrown backwards a couple of meters.

I got this:

                     if (hit.rigidbody)
                     {
                             if (GetComponent<CharacterDamage>().Throw == true)
                             {
                         hit.rigidbody.AddForce(-hit.transform.forward * 2000);
                         hit.rigidbody.AddForce(hit.transform.up * 200);
                             }

Now when i get hit it does correctly what it supposed to if the player is facing the creature.

But when the creature sneaks up on the player from the back, the player gets thrown in the wrong direction.

How can i change it so that the player gets thrown in the right direction no matter where the creature hits me?

Answer 1

Best Answer

Answer by IgorAherne · Jan 22, 2017 at 11:50 PM

 //compute vector (length one) from game object's pivot to the player's pivot:
 Vector3 hitVector = (hit.transform.position - transform.position).normalized;
 
 //if you want only horizontal plane movement, disable y-component of hitVector:
 hitVector = (hit.transform.position - transform.position);
 hitVector.y = 0;
 hitVector = hitVector.normalized 
 
 hit.rigidbody.AddForce(hitVector* 2000 );

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Dionysos1111 · Jan 23, 2017 at 05:51 PM 0

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Yes thank you, that fixed the problem :) didn't knew about normalized.

Y2KExtacy · Apr 01 at 10:02 PM 0

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I am also trying to figure this out, but am slightly confused. How do I set this up? Here is my code for dealing damage:

public class DamagePlayer : MonoBehaviour { public int damageAmount = 3;

 //optional code
 //do not plan to use
 public bool destroyOnDamage;
 public GameObject destroyEffect;

 private void OnCollisionEnter2D(Collision2D other)
 {
     if(other.gameObject.tag == "Player")
     {
         DealDamage();
     }
 }

 private void OnTriggerEnter2D(Collider2D other)
 {
     if(other.tag == "Player")
     {
         DealDamage();
     }
 }

 void DealDamage()
 {
     PlayerHealthController.instance.DamagePlayer(damageAmount);

     //adding force when player is hit
     //need to finish working on this
     


     if (destroyOnDamage)
     {
         if(destroyEffect != null)
         {
             Instantiate(destroyEffect, transform.position, transform.rotation);
         }

         Destroy(gameObject);

     }

 }

}

addforce to rigidbody when hit

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