Question by skyyguy · Jun 24, 2016 at 04:23 AM · c#animation collider

Cant play animation once on collision enter then another animation on collision exit? Called multiple times?

I am having a difficult problem here, reference my Stack overflow question: http://stackoverflow.com/questions/38001740/unity-c-sharp-cannot-make-object-move-down-from-current-y-position-once-on-co

I have platforms that spawn. On collision enter and exit, I want to play an animation ONCE to achieve this effect: When player lands on platform, platform moves down and STAYS DOWN. When they jump up, it moves up and STAYS UP. I've been at this hours - can't get it to work. Im desperate.

I first tried without animations:

 void OnCollisionEnter (Collision col) {
         GameObject platform = col.gameObject;
 
         //platform.GetComponent<Animation> ().Play ("down1");
         if (!playedAnim1) {
            platform.transform.position += new Vector3(platform.transform.position.x, -2, platform.transform.position.z);
 
             playedAnim1 = true;
         }
         touchingPlatform = true;
         Debug.Log ("entering platform");
     }

Trying to just move the platform 2 down from its original position. This did not work so I looked at http://forum.unity3d.com/threads/play-animation-on-collide.111775/ and created 2 animations. I had to stick my platform prefab in an empty game object so the platform would move just within the empty, so I don't know if this may be causing the issue but with this script:

 void OnCollisionEnter (Collision col) {
         GameObject platform = col.gameObject;
 
         //platform.GetComponent<Animation> ().Play ("down1");
         if (!playedAnim1) {
             platform.GetComponent<Animation> ().Play ("down1");
 
             playedAnim1 = true;
         }
         touchingPlatform = true;
         Debug.Log ("entering platform");
     }
 
     void OnCollisionExit (Collision col) {
 
          if (!playedAnim2) {
             platform.GetComponent<Animation> ().Play ("up1");
 
             playedAnim2 = true;
         }
 
         touchingPlatform = false;
         Debug.Log ("exiting platform");
     }

Despite using a boolean flag like the question, the platform moves up and down repeatedly and doesn't work. I don't know what to do and can't complete my project without this aspect.

I think I had to attach a renderer and collider to the empty in order for the prefab to trigger the oncollisionenter and I think the problem MAY be due to oncollisionenter/exit being called multiple times.. is there a way around this?

How can I play an animation ONCE and have it remain in the final position from that animation (i.e 2 down) when my player collides with the platform, then up when it leaves? Is it possible?

Add comment