作者:幻世界
做了以下两张图有助于理解,如果想调控概率的话直接修改概率数组即可
一.做加法
/**加*/
//rate:几率数组(%), total:几率总和(100%)
// Debug.Log(rand(new int[] { 10, 5, 15, 20, 30, 5, 5,10 }, 100));
public static int rand(int[] rate, int total)
{
int r = Random.Range(1, total+1);
int t = 0;
for (int i = 0; i < rate.Length; i++)
{
t += rate[i];
if (r < t)
{
return i;
}
}
return 0;
}
二.做减法
/**减*/
//rate:几率数组(%), total:几率总和(100%)
// Debug.Log(randRate(new int[] { 10, 5, 15, 20, 30, 5, 5,10 }, 100));
public static int randRate(int[] rate, int total)
{
int rand = Random.Range(0, total+1);
for (int i = 0; i < rate.Length; i++)
{
rand -= rate[i];
if (rand <= 0)
{
return i;
}
}
return 0;
}
运行100次的结果: