The animation state could not be played because it couldn't be found! (87991)

[Commander_Quackers]

Hi, trying to make a custom FPS player with self-made animations but when I use this code attached to the First Person Controller and press shift, it gives me the error in the question.

Here’s the code I’m using, it references to animations in the Main Camera.

    childObject= GameObject.Find("Main Camera");
    if (ch.isGrounded && Input.GetKey("left shift") || Input.GetKey("right shift")){
        speed = runSpeed;
      	childObject.animation.Play("fpsrun");
      	}
      	else {
      	childObject.animation.Play("fpswalk");    
    }

Anyone know a quick fix for this? The animations are in the Assets folder. Do they need to be in a special folder somewhere? Also, they are attached to an animation tab in the inspector in Main Camera.

Any help? Thanks!

[clunk47]

Your animations are not being found because they must be marked as legacy. Go to your project pane and select one of the animations (fpswalk or fpsrun). Then set the inspector to Debug Mode as shown in the photo attached. The animation type will probably be 2. Set it to 1. Repeat this step for your other animation(s).

Also, just for some debugging purposes, and cleaner code, try this as far as your script goes.

#pragma strict

private var childObject : GameObject;

var walkSpeed: float = 7; // regular speed
var crchSpeed: float = 3; // crouching speed
var runSpeed: float = 20; // run speed

private var chMotor: CharacterMotor;
private var ch: CharacterController;
private var height: float; // initial height

var h : float;
var speed : float;
var lastHeight : float;

var childAnim : Animation;

function Start()
{
	childObject = Camera.main.gameObject;
	childAnim = childObject.animation;
	chMotor = GetComponent(CharacterMotor);
	ch = GetComponent(CharacterController);
	height = ch.height;
	h = height;
	speed = walkSpeed;
}

function Update()
{
	if(childAnim.GetClip("fpsrun") && childAnim.GetClip("fpswalk"))
	{
		if (ch.isGrounded && Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift))
		{
			speed = runSpeed;
			childObject.animation.CrossFade("fpsrun", 0.25f);
		}
		
		else
			childObject.animation.CrossFade("fpswalk", 0.25f);    
	}
	
	else print("Animations not found.");
	
	if (Input.GetKey(KeyCode.C))
	{ // press C to crouch
		h = 0.5 * height;
		speed = crchSpeed; // slow down when crouching
	}

	chMotor.movement.maxForwardSpeed = speed; // set max speed
	ch.height = Mathf.Lerp(ch.height, h, 5*Time.deltaTime);
	lastHeight = ch.height; // crouch/stand up smoothly 
	transform.position.y += (ch.height-lastHeight)/2; // fix vertical position
}

[phreakhead]

If you don’t want to mark your animations as legacy, you can use the new Playables API to play non-legacy AnimationClips:

private List<PlayableGraph> graphs = new List<PlayableGraph> ();

// Just call this function when you want to play an AnimationClip on a specific GameObject.
// from https://docs.unity3d.com/Manual/Playables-Examples.html
private PlayableGraph playAnim(AnimationClip clip, GameObject obj) {
    PlayableGraph playableGraph;

    AnimationPlayableUtilities.PlayClip(obj.AddComponent<Animator>(), clip, out playableGraph);

    // save all graphs we create and destroy them at the end of our scene.
    // you might need to optimize this if you make a lot of animations.
    graphs.Add (playableGraph);

    return playableGraph;
}

void OnDisable() {
    foreach (var g in graphs) {
        g.Destroy();
    }
    graphs.Clear ();
}

[Logandotwork]

Hi now we just need check the box legacy in debug mode