How to change animation when hitting collider?

I have a sprite which include an edge collider with isTrigger enabled. I want to make my player object change its animation when he got hit by this collider.
Any solutions?
thank you

 

Suppose your have an animator component on your gameObject, and in the animator controller you have a trigger varible called hit.

Code (CSharp):

1.  
2. Animator anim;
3.  
4. Awake()
5. {
6.   anim = gameObject.GetComponent<Animator>();
7. }
8.  
9. OnTriggerEnter(Collider other)
10. {
11.   anim.SetTrigger("hit");
12. }
13.  

 

Sorry I'm confused what you mean there. Right now I have 2 parameters called alive and dead (both of them are boolean) in my animator.

And I gave this function to the character :

Code (CSharp):

1.     void OnTriggerEnter2D(Collider2D collider)
2.     {
3.         animator.SetBool("dead", true);
4.     }

But the character is switching back and forth the alive and dead animation endlessly.
What should be corrected?

 

bool is almost right, delet it and create a dead trigger instead

if the boolean dead is switching to fast the animator cant capture the state.
if you use a trigger the animator gets locked in the state.

in the ontrigger function do what roderyk said:

Code (CSharp):

1.  OnTriggerEnter(Collider other)
2. {
3.   anim.SetTrigger("dead");
4. }

 

I have created the trigger now and applied the code but the character isn't change its animation.
Do I need to make transition from "Any State" to "Die" in Animator? Sorry I'm new to Unity so this all is part of the learning process.

 

show us your animator, you can make a screenshot and past it here.

 

Here's the screenshot

 

so your Character can only die and fall?

add an idle animation state. take a look at my character animator i posted previously (ignor Entry state this is new in Unity 5 and it looks like you are using <5)

Edit:
this Tutorial includes the Animator State Machine that suits your problem perfectly:
http://unity3d.com/learn/tutorials/modules/beginner/2d/2d-controllers @ jump to 20 min and 45 seconds

 

Yes it only has 2 animations, the default is fall(because it's a falling game) and if the character hit the wall, it dies.

 

simple game idea. i'm interessted, keep me updated

first: falling is your default state right click on it -> set as default layer state (now state should be orange) - or am I wrong again and your game idea is dieing most of the time and sometimes falling

second: delete the transition from "any state" -> falling

third: add a transition from dead -> falling, transistion has exit time = 1 (one complete die animation will be shown before translation to state falling)

 

I have followed your steps. So right now, in the animator, there are "Any State" (not connected to anything), "Fall" <-- "Die". And there are 2 parameters, "Fall"(boolean) and "Dead"(trigger).
Do I need to change anything again? Because the character is still not moving.

PS : The character has a rigidbody 2D also.

 

any state -> dead transition with condition trigger dead

please upload a screenshot

and your current script

 

This is my current script (it's attached to the player) :

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class MouseController : MonoBehaviour {
5.  
6.     Animator animator;
7.  
8.     Transform myTrans;
9.     Rigidbody2D myBody;
10.  
11.     float speed = 3.0f;
12.  
13.     void Awake(){
14.         animator = gameObject.GetComponent<Animator> ();
15.     }
16.  
17.     // Use this for initialization
18.     void Start () {
19.         myBody = this.rigidbody2D;
20.         myTrans = this.transform;
21.     }
22.    
23.     // Update is called once per frame
24.     void Update () {
25.         transform.Translate(Input.acceleration.x, 0, -Input.acceleration.z);
26.     }
27.  
28.     void OnTriggerEnter2D(Collider2D other)
29.     {
30.         animator.SetTrigger("die");
31.     }
32. }
33.  

and I also attached the animator screenshot below

 

you move your character with transform.Translate().... with this method you can't get Collisions/Triggers to run. You should work with

GetComponent<Rigidbody2D>().MovePosition()
GetComponent<Rigidbody2D>().AddForce()
GetComponent<Rigidbody2D>().velocity

although this is not perfect try this one:

and check your console if the OnTriggerEnter fires some messages

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. public class MouseController : MonoBehaviour {
4.     Animator animator;
5.     bool isDead = false;
6.     Transform myTrans;
7.     Rigidbody2D myBody;
8.     float speed = 3.0f;
9.     void Awake(){
10.         animator = gameObject.GetComponent<Animator> ();
11.     }
12.     // Use this for initialization
13.     void Start () {
14.         myBody = this.rigidbody2D;
15.         myTrans = this.transform;
16.     }
17.  
18.     // Update is called once per frame
19.     void Update () {
20.     if(anim.GetCurrentAnimatorStateInfo(0).IsName("fall"))
21.         {
22.             isDead = false;
23.         {
24.  
25.     if(!isDead)
26.         {
27.             animator.SetBool("fall", true);
28.             transform.Translate(Input.acceleration.x, 0, -Input.acceleration.z);
29.         }
30.     }
31.     void FixedUpdate () {
32.     myBody.MovePosition(this.transform.position);
33.     }
34.  
35.  
36.     void OnTriggerEnter2D(Collider2D other)
37.     {
38.     Debug.Log("I'm hitting " + other.name " + ", die!");
39.        Die();
40.    }
41.  
42.    void Die()
43.    {
44.        isDead = true;
45.        animator.SetTrigger("die");
46.    }
47. }

 

I'm still using my code and noticed that the trigger is working, maybe because I just realized I accidentally removed the rigidbody2D component. The only problem is now the animation part. I'll try playing with the animator a bit and hope that helps.
Anyway, thank you tobad and roderyk