SamsonGame/Assets/Sources/Feel/MMTools/Tools/MMAnimation/MMStopMotionAnimation.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace MoreMountains.Tools
{
    [AddComponentMenu("More Mountains/Tools/Animation/MMStopMotionAnimation")]
    public class MMStopMotionAnimation : MonoBehaviour
    {
        public enum FramerateModes { Manual, Automatic }

        [Header("General Settings")]
        public bool StopMotionEnabled = true;
        public int AnimationLayerID = 0;

        [Header("Framerate")]
        public FramerateModes FramerateMode = FramerateModes.Automatic;

        [MMEnumCondition("FramerateMode", (int)FramerateModes.Automatic)]
        public float FramesPerSecond = 4f;
        [MMEnumCondition("FramerateMode", (int)FramerateModes.Automatic)]
        public float PollFrequency = 1f;

        [MMEnumCondition("FramerateMode", (int)FramerateModes.Manual)]
        public float ManualTimeBetweenFrames = 0.125f;
        [MMEnumCondition("FramerateMode", (int)FramerateModes.Manual)]
        public float ManualAnimatorSpeed = 2;

        public float timet = 0;

        protected float _currentClipFPS = 0;
        protected float _currentClipLength = 0f;
        protected float _lastPollAt = -10f;
        protected Animator _animator;
        protected AnimationClip _currentClip;

        protected virtual void Awake()
        {
            _animator = this.gameObject.GetComponent<Animator>();            
        }

        protected virtual void Update()
        {
            StopMotion();

            if (Time.time - _lastPollAt > PollFrequency)
            {
                Poll();
            }
        }

        protected virtual void StopMotion()
        {
            if (!StopMotionEnabled)
            {
                return;
            }

            float timeBetweenFrames = 0f;
            float animatorSpeed = 0f;

            switch(FramerateMode)
            {
                case FramerateModes.Manual:
                    timeBetweenFrames = ManualTimeBetweenFrames;
                    animatorSpeed = ManualAnimatorSpeed;
                    break;
                case FramerateModes.Automatic:
                    timeBetweenFrames = (1 / FramesPerSecond);
                    animatorSpeed = (1 / (FramesPerSecond - 1)) * 2f * _currentClipFPS;
                    break;
            }

            timet += Time.deltaTime;
            if (timet > timeBetweenFrames)
            {
                timet -= timeBetweenFrames;
                _animator.speed = animatorSpeed;
            }
            else
            {
                _animator.speed = 0;
            }
        }

        protected virtual void Poll()
        {
            _currentClip = _animator.GetCurrentAnimatorClipInfo(AnimationLayerID)[0].clip;
            _currentClipLength = _currentClip.length;
            _currentClipFPS = _currentClip.frameRate;
            _lastPollAt = Time.time;
        }
    }
}