Animate an instantiated Prefab property

Question

Hi everyone,

My question is maybe a bit complex, but i'll try to give all the details that I can. In my game, I made a system for instantiating prefabs that will be used as player weapon.

First, how I manage my prefab : The player walks in the trigger zone of a weapon that is on ground, he picks it up, and the weapon goes in player hands, by instantiating a prefab that is spawned inside hierarchy of player model.

Second, I need to manage the box collider of the weapon during animation of player. The main problem is that box collider is always on, when I walk towards an enemy, the weapon triggers a damage on him without attacking. So, I wanted to disable box collider when the player is not attacking (idle animation, walking, etc.) So I used keyframes on player animation, but it goes weird since I'm trying to change box collider of an instantiated prefab.

I think that property showing inside animation window is the one of the previous runtime instantiated prefab, when I reload the party, It cannot works as it will instantiate another prefab... What is the solution here? Thanks!

Answer 1

All right, I found a way when looking for info on Unity docs.

I attached a script on the prefab supposed to spawn in the player hands. Here it is :

  public Animator playerAnimator;
     private BoxCollider2D weaponBoxCol; //I declare the collider of the weapon itself    
 
     void Start()
     {
         playerAnimator = GameObject.FindGameObjectWithTag("Player").GetComponent<Animator>(); //I'm getting the Player Animator
         weaponBoxCol = GetComponent<BoxCollider2D>(); //I get the collider of the weapon
         weaponBoxCol.enabled = false; //The collider starts disabled
     }
 
     void Update()
     {
         if (playerAnimator.GetCurrentAnimatorStateInfo(0).IsName("player_weapon")) //I check if the animation played is the one when player swings weapon
         {
             if (playerAnimator.GetCurrentAnimatorStateInfo(0).normalizedTime >= 0 && playerAnimator.GetCurrentAnimatorStateInfo(0).normalizedTime <= 0.5) //If the animation is between the beginning and middle of it, the collider stays disabled
             {
                 weaponBoxCol.enabled = false;
             }
             else if (playerAnimator.GetCurrentAnimatorStateInfo(0).normalizedTime > 0.5)  //If the animation is at middle of it, the collider enables
             {
                 weaponBoxCol.enabled = true;
             }
             else if (playerAnimator.GetCurrentAnimatorStateInfo(0).normalizedTime == 0) //If the animation didn't begin, the collider stays disabled
             {
                 weaponBoxCol.enabled = false;
             }
         }
         if (playerAnimator.GetCurrentAnimatorStateInfo(0).IsName("Player_walk") || playerAnimator.GetCurrentAnimatorStateInfo(0).IsName("Player")) //If the animation of walking and idling are played, the collider stays disabled
         {
             weaponBoxCol.enabled = false;
         }
     }

It's maybe not optimized, but it works. The Animator.GetCurrentAnimatorStateInfo was the key!

Animate an instantiated Prefab property

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