目录
前言
一、简单的使用
新增ChestInteractableEvents，定义宝箱交互事件
新增Box
箱子挂载脚本，配置事件
运行效果
二、完善各种事件
1. 完善生成金币事件
效果，金币飞出
2. 完善生成敌人事件敌人
效果
3. 完善生成药水事件
效果
最终效果
前言
如何在Unity中结合随机功能和UnityEvent事件使用？下面通过一个具体示例来说明。
如果你对随机数生成和UnityEvent事件系统感兴趣，建议进一步深入学习。
（注：本文为学习笔记整理，希望能对你有所帮助）
下面开始具体讲解：
一、简单的使用
新增ChestInteractableEvents，定义宝箱交互事件
[System.Serializable]
public class ChestInteractableEvents
{[Header("宝箱事件名称")]public string EventName;[Range(0f, 1f), Header("掉落几率")]public float DropChance = 0.5f;[Header("宝箱交互事件")]public UnityEvent ChestInteractionEvent;
}
新增Box
public class Box : MonoBehaviour
{[Header("宝箱交互事件数组")][SerializeField] private ChestInteractableEvents[] _chestInteractionEvents;//测试执行private void Update(){if (Input.GetKeyDown(KeyCode.Space)){DetermineAndFireChestEvent();}}private void DetermineAndFireChestEvent(){// 计算总的掉落几率float totalChance = 0f;foreach (ChestInteractableEvents interactableEvents in _chestInteractionEvents)totalChance += interactableEvents.DropChance;float rand = Random.Range(0f, totalChance); // 生成一个随机数，范围是0到总掉落几率float cumulativeChance = 0f;foreach (ChestInteractableEvents interactableEvents in _chestInteractionEvents){cumulativeChance += interactableEvents.DropChance;if (rand < cumulativeChance){interactableEvents.ChestInteractionEvent.Invoke(); // 触发宝箱交互事件return;}}}// 生成金币public void SpawnCoins(){Debug.Log("生成了一个金币");}// 生成敌人public void SpawnEnemies(){Debug.Log("生成了敌人");}// 生成生命药水public void SpawnHealthPotion(){Debug.Log("生成了一个生命药水");}
}
箱子挂载脚本，配置事件
运行效果
二、完善各种事件
1. 完善生成金币事件
[Header("生成金币")]
[SerializeField] private Rigidbody2D _coinToSpawn; // 要生成的金币刚体
[SerializeField] private int _numberofCoinsTospawn = 100; // 要生成的金币数量
[SerializeField] private float _explosionForce = 10f; // 金币爆炸力度
[SerializeField, Range(0f, 0.5f)] private float _explosionArc = 0.5f; // 金币爆炸角度范围
[SerializeField] private bool _delayBetweenspawns = false; // 是否延迟生成金币
[SerializeField] private Transform _spawnTransform; // 生成金币的位置/// <summary>
/// 生成金币
/// </summary>
public void SpawnCoins()
{if (!_delayBetweenspawns){// 直接生成金币for (int i = 0; i < _numberofCoinsTospawn; i++){Rigidbody2D coinRB = Instantiate(_coinToSpawn, _spawnTransform.position, Quaternion.identity);Explosion(coinRB);}}else{// 延迟生成金币StartCoroutine(SpawnCoinsWithDelay());}
}/// <summary>
/// 延迟生成金币
/// </summary>
/// <returns></returns>
private IEnumerator SpawnCoinsWithDelay()
{for (int i = 0; i < _numberofCoinsTospawn; i++){Rigidbody2D coinRB = Instantiate(_coinToSpawn, _spawnTransform.position, Quaternion.identity);Explosion(coinRB);yield return null;}
}/// <summary>
/// 金币爆炸效果
/// </summary>
/// <param name="rb"></param>
private void Explosion(Rigidbody2D rb)
{Vector2 randDir = new Vector2(Random.Range(-_explosionArc, _explosionArc), 1f);Vector2 force = randDir.normalized * _explosionForce;rb.AddForce(force, ForceMode2D.Impulse);
}
效果，金币飞出
2. 完善生成敌人事件敌人
[Header("生成敌人")]
[SerializeField] private GameObject[] _enemiesToSpawn; // 要生成的敌人数组
[SerializeField] private GameObject _enemySpawnParticles; // 敌人生成时的粒子效果
[SerializeField] private int _numofEnemiesToSpawn = 3; // 要生成的敌人数量
[SerializeField, Range(0f, 15f)] private float _enemySpawnoffset = 2f; // 敌人生成的偏移距离/// <summary>
/// 生成敌人
/// </summary>
public void SpawnEnemies()
{for (int i = 0; i < _numofEnemiesToSpawn; i++){int randIndex = Random.Range(0, _enemiesToSpawn.Length);float randX = Random.Range(-_enemySpawnoffset, _enemySpawnoffset);float randY = Random.Range(-_enemySpawnoffset, _enemySpawnoffset);Vector2 spawnPos = ((Vector2)_spawnTransform.position + new Vector2(randX, randY)).normalized;GameObject enemy = Instantiate(_enemiesToSpawn[randIndex], spawnPos, Quaternion.identity);//生成粒子效果GameObject enemySpawnParticles = Instantiate(_enemySpawnParticles, spawnPos, Quaternion.identity);//粒子效果和敌人大小一致enemySpawnParticles.transform.localScale = enemy.transform.localScale;}
}
效果
3. 完善生成药水事件
[Header("生成生命药水")]
[SerializeField] private Rigidbody2D _healthPotionToSpawn; // 要生成的生命药水刚体
[SerializeField] private float _upwardForce = 5f; // 生命药水向上的力度/// <summary>
/// 生成生命药水
/// </summary>
public void SpawnHealthPotion()
{Rigidbody2D rb = Instantiate(_healthPotionToSpawn, _spawnTransform.position, Quaternion.identity);Vector2 force = Vector2.up * _upwardForce;rb.AddForce(force, ForceMode2D.Impulse);
}
效果
最终效果
