Trigger animation using script on separate box collider

Questions & Answers
1

I’m trying to do something that I thought would be very simple, but it’s proving to be very difficult to figure out.

I have a box collider with ‘Is Trigger’ enabled, and I want to add a script to this trigger box to play an animation on another game object. This game object has an animation on it, which was created in unity. I am using unity 4.3.4.

Example:

-Walk through underground tunnel where a collider box is entered.

-On entering the collider box a train animation is triggered

-Train drives down platform and stops (as animated)

2

I haven’t used animations before in unity yet but I think this will help you to get started.

So you have a Box that has a script.
When you walk through that “Box” which is a trigger it will make the animation play. I think something like this will help you.

The Train Script:

using UnityEngine;
using System.Collections;
    public class TrainScript: MonoBehaviour {
    
        public bool PlayAnimation = false;
    

    	void Start () {	
    	
    	}
    	

    	void Update () {
    		if(PlayAnimation){
            // Whatever function or code you write to start the animation
            // or however you want to do the animation}
    	}
    	
    	
    }

This Box Script :

using UnityEngine;
using System.Collections;

public class Box: MonoBehaviour {
       // Make sure you have the Train Object
	public GameObject Train;
      // The Script of the train;
	private TrainScript trainscript;

     
	void Start () {	
                // This will get the script and set the trainscript
		trainscript= Train.GetComponent("TrainScript ") as TrainScript ;
	}
	
	// Update is called once per frame
	void Update () {
		
	}
	
	void OnTriggerEnter(Collider collision){
		if(collision.gameObject.tag == "Your Character's Tag"){
			trainscript.PlayAnimation = true;
		}
	}
}

Now what this should do is, when your mainplayer/character enters the Box/Trigger it will edit the bool inside the train’s script to make it true. Then inside of the trainscript you will have a case if that bool is true it will make the animation run/play.

3

Thanks for your input, this worked for me.
Just applied this script to the trigger box and dragged in the corresponding game objects.

var  Train: GameObject; //object to be animated
var TrainAnimation : String; //animation to be played
       
function OnTriggerEnter(Collision){
Train.animation.Play(TrainAnimation);
}

After this I was getting a message about marking the animation as legacy. To do this with a unity made animation I found out I had to follow these steps.

  1. Switch the Inspector panel to a debug mode (3 stripes in a right top corner, near lock icon)
  2. Set the animation type to a “1”
  3. Switch the Inspector panel to a normal mode