//======= Copyright (c) Valve Corporation, All rights reserved. ===============
//
// Purpose: Animator whose speed is set based on a linear mapping
//
//=============================================================================

using UnityEngine;
public class LinearAnimator : MonoBehaviour
{
	public LinearMapping linearMapping;
	public Animator animator;
	private float currentLinearMapping = float.NaN;
	private int framesUnchanged = 0;
	public float speed = 1;
	public bool reverse;
	//-------------------------------------------------
	void Awake()
	{
		if ( animator == null )
		{
			animator = GetComponent<Animator>();
		}

		animator.speed = 0.0f;

		if ( linearMapping == null )
		{
			linearMapping = GetComponent<LinearMapping>();
		}
	}


	//-------------------------------------------------
	void Update()
	{
		if ( currentLinearMapping != linearMapping.value )
		{
			currentLinearMapping = linearMapping.value;
			animator.enabled = true;
            if (reverse)
            {
				animator.Play(0, 0, (1-currentLinearMapping) * speed);
			}
            else 
            {
				animator.Play(0, 0, currentLinearMapping * speed);
			}
			framesUnchanged = 0;
		}
		else
		{
			framesUnchanged++;
			if ( framesUnchanged > 2 )
			{
				animator.enabled = false;
			}
		}
	}
}