Arrow Hit Damage for HTC Vive

Unity Engine
1

Hi !

I try to achieve an bow system in Unity for HTC Vive.

I want to kill my enemy with only one arrow. But when my arrow hit the collider of my enemy nothing happen, i think i’m wrong with collider detection :/.

 private void OnCollisionEnter(Collision collision)
        {
            if (collision.gameObject.name == " Barbare" )
            {
                EnemyHealth enemyHealth = GetComponent <EnemyHealth> ();
                if(enemyHealth != null)
                    Debug.Log(enemyHealth+"Enemy Health Avant");
               
                {
                    enemyHealth.TakeDamage (damagePerShot );
                    Debug.Log(enemyHealth+"Enemy Health Apres");
                }
            }
           
            else
            {
                ResetArrow();
            }
        }

This is for the arrow.

 public void TakeDamage (int amount)
    {
        if(isDead)
            return;

        enemyAudio.Play ();

        currentHealth -= amount;
           
      
        if(currentHealth <= 0)
        {
            Death ();
        }
    }

For the Enemy damage.

( I use the VRTK package for the bow system )

2

Anyone ? Or if Someone know another for achieve something like that :slight_smile:

3

is your enemy’s name exactly “Barbare” in the scene?
does either your arrow or enemy have a rigidbody?
is your arrow using trigger collision instead of normal collision?

4

I changed with this way :

void OnTriggerEnter(Collider other)
        {
            if(other.gameObject.tag == "Enemy")
            {
                EnemyHealth enemyHealth = GetComponent <EnemyHealth> ();
                Debug.Log(enemyHealth+"Enemy Health Avant");
                if(enemyHealth != null)


                {
                    enemyHealth.TakeDamage (101);
                    Debug.Log(enemyHealth+"Enemy Health Apres");
                }
            }

In the debug log he display “Enemy Health Avant” so the arrow work with trigger solution. But he dont substract the health to my enemy. I changed the “damagePerShot” directly by the amount of damage but nothing change.

This is my EnemyHealth script :

public class EnemyHealth : MonoBehaviour
{
    public int startingHealth = 100;
    public int currentHealth;
    public float sinkSpeed = 2.5f;
    public int scoreValue = 10;
    public AudioClip deathClip;


    Animator anim;
    AudioSource enemyAudio;
    ParticleSystem hitParticles;
    CapsuleCollider capsuleCollider;
    bool isDead;
    bool isSinking;


    void Awake ()
    {
        anim = GetComponent <Animator> ();
        enemyAudio = GetComponent <AudioSource> ();
        hitParticles = GetComponentInChildren <ParticleSystem> ();
        capsuleCollider = GetComponent <CapsuleCollider> ();

        currentHealth = startingHealth;
    }


    void Update ()
    {
        if(isSinking)
        {
            transform.Translate (-Vector3.up * sinkSpeed * Time.deltaTime);
        }
    }


    public void TakeDamage (int amount)
    {
        if(isDead)
            return;

        enemyAudio.Play ();

        currentHealth -= amount;
           
        //hitParticles.transform.position = hitPoint;
        hitParticles.Play();

        if(currentHealth <= 0)
        {
            Death ();
        }
    }


    void Death ()
    {
        isDead = true;

        capsuleCollider.isTrigger = true;

        anim.SetTrigger ("Dead");

        enemyAudio.clip = deathClip;
        enemyAudio.Play ();
    }


    public void StartSinking ()
    {
        GetComponent <NavMeshAgent> ().enabled = false;
        GetComponent <Rigidbody> ().isKinematic = true;
        isSinking = true;
        //ScoreManager.score += scoreValue;
        Destroy (gameObject, 2f);
    }
}
5

Are you sure the object you expect the arrow to collide with has a collider, and does it have the “EnemyHealth” script in it?

6

Yes i put my Enemy Health on my Enemy, and my arrow script on my arrow

7

my bad i didnt look at your script properly. in this line:

EnemyHealth enemyHealth = GetComponent <EnemyHealth> ();

by using GetComponent, you have tried to find “EnemyHealth” in the arrow.
You should be using this instead:

EnemyHealth enemyHealth = other.GetComponent <EnemyHealth> ();
8

Hops, i didn’t see that :S. Thanks a lot, sorry for the time !