();
//---------
private RandomConfig GetRandomValue()
//累加结算总权重
int totalWeight = randomConfigList.Aggregate(0,(all,next) => all += next.weight);
//在0~total范围内随机
int cursor = 0;
int random = Random.Range(0,totalWeight);
foreach(var item in randomConfigList)
//累加当前权重
cursor += item.weight;
//判断随机数
if(cursor > random)
return item;
return null;
测试代码，随机10000次，记录每个随机配置被随机到的次数
private void Start()
//定义随机参数权重
randomConfigList = new List<RandomConfig>() {
new RandomConfig(1,10),
new RandomConfig(2,20),
new RandomConfig(3,30),
new RandomConfig(4,40),
new RandomConfig(5,50),
//测试10000次，记录每次随机结果
Dictionary<RandomConfig,int> testResultDic = new Dictionary<RandomConfig,int>();
for(int i = 0; i < 10000; i++)
RandomConfig random = GetRandomValue();
if(testResultDic.ContainsKey(random))
testResultDic[random]++;
testResultDic[random] = 1;
//打印随机结果
foreach(var item in testResultDic)
Debug.Log(string.Format("随机返回值 : {0}; 权重 : {1}; 随机到次数 : {2}",item.Key.value,item.Key.weight,item.Value));
测试结果，大致与权重一致
每个随机配置有权重和可随机次数两个参数，权重影响随机概率，可随机次数表示能被随机到的次数上限。每次被随机到时，可随机次数减1，可随机次数为0时，从列表中剔除该随机数，以后不再参与随机。
public class NewBehaviourScript : MonoBehaviour
[System.Serializable]
public class RandomConfig
public RandomConfig(int v,int w,int c)
value = v;
weight = w;
count = c;
//返回值
public int value;
//随机权重
public int weight;
//可随机次数
public int count;
[SerializeField] private List<RandomConfig> randomConfigList = new List<RandomConfig>();
//---------
private RandomConfig GetRandomValue()
if(randomConfigList.Count <= 0)
return null;
List<RandomConfig> resultList = new List<RandomConfig>();
int totalWeight = randomConfigList.Aggregate(0,(all,next) => all += next.weight);
int cursor = 0;
int random = Random.Range(0,totalWeight);
foreach(var config in randomConfigList)
cursor += config.weight;
if(cursor > random)
config.count--;
if(config.count == 0)
randomConfigList.Remove(config);
return config;
return null;
测试代码，分别随机1000、5000、10000次，记录每个随机配置被随机到的次数
private void Start()
//定义随机参数权重
randomConfigList = new List<RandomConfig>() {
new RandomConfig(1,10,1000),
new RandomConfig(2,20,1000),
new RandomConfig(3,30,2000),
new RandomConfig(4,40,2000),
new RandomConfig(5,50,1000),
//测试10000次，记录每次随机结果
Dictionary<RandomConfig,int> testResultDic = new Dictionary<RandomConfig,int>();
for(int i = 0; i < 5000; i++)
RandomConfig random = GetRandomValue();
if(random == null)
continue;
if(testResultDic.ContainsKey(random))
testResultDic[random]++;
testResultDic[random] = 1;
//打印随机结果
foreach(var item in testResultDic)
Debug.Log(string.Format("随机返回值 : {0}; 权重 : {1}; 随机到次数 : {2}",item.Key.value,item.Key.weight,item.Value));
随机1000次
随机5000次
随机10000次
