Unity 可调控概率

可调控近似概率

可调控稳定概率

using System.Collections.Generic;
using UnityEngine;public class RandRate : MonoBehaviour
{void Start(){for (int i = 0; i < 100; i++){//int value = GetRandomRate(new float[5] { 0.2f, 0.3f, 0.4f, 0.05f, 0.05f });int value = GetRateNoRandom();Debug.Log(value);}}// 约等于概率int GetRandomRate(float[] probs){float total = 0;foreach (float elem in probs){total += elem;}float randomPoint = Random.value * total;for (int i = 0; i < probs.Length; i++){if (randomPoint < probs[i]){return i;}else{randomPoint -= probs[i];}}return probs.Length - 1;}// 数组值加起来不一定等于100,但是一般规范100 就行,要求整数int[] NoRandomArr;// 先初始化出来存储起来List RandomList ;void InitRandomListValue(){NoRandomArr = new int[5] {20, 30, 40, 5, 5 };RandomList = new List();for (int i = 0; i < NoRandomArr.Length; i++){for (int j = 0; j < NoRandomArr[i]; j++){RandomList.Add(i);}}}// 稳定概率 例如设置了0的概率是10 ,那么100次一定有10次,不多不少int GetRateNoRandom(){if (RandomList == null ||RandomList.Count == 0) InitRandomListValue();int listIndex = Random.Range(0, RandomList.Count - 1);int listValue = RandomList[listIndex];RandomList.RemoveAt(listIndex);return listValue;}
}

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