unity 3分钟制作粒子爆炸效果可以用在三消消除等

思路就是：

有一个对象池，管理各种特效。

当需要播放特效时，触发如下代码：

blocker为粒子生成的位置

var particles = gamePools.iceParticlesPool.GetObject();
if (particles != null)
{
     particles.transform.position = blocker.transform.position;
     particles.GetComponent<TileParticles>().fragmentParticles.Play();
}

Prefab有两个脚本：

1. AutoKillPooled（用途是到了时间就自杀）

    public class AutoKillPooled : MonoBehaviour
    {
        public float time = 2.0f;

        private PooledObject pooledObject;
        private float accTime;

        /// <summary>
        /// Unity's OnEnable method.
        /// </summary>
        private void OnEnable()
        {
            accTime = 0.0f;
        }

        /// <summary>
        /// Unity's Start method.
        /// </summary>
        private void Start()
        {
            pooledObject = GetComponent<PooledObject>();
        }

        /// <summary>
        /// Unity's Update method.
        /// </summary>
        private void Update()
        {
            accTime += Time.deltaTime;
            if (accTime >= time)
            {
                pooledObject.pool.ReturnObject(gameObject);
            }
        }
    }

2. TileParticles（播放粒子）

TileParticles的脚本附在这个prefab上面，脚本内容如下：

    /// <summary>
    /// This class identifies the particles emitted when a tile entity is destroyed.
    /// </summary>
    public class TileParticles : MonoBehaviour
    {
        public ParticleSystem fragmentParticles;

        /// <summary>
        /// Unity's Awake method.
        /// </summary>
        private void Awake()
        {
            Assert.IsNotNull(fragmentParticles);
        }
    }