/// <summary>
/// 获得中奖人
/// </summary>
/// <param name="store">参与摇奖的对象( k - 摇奖对象标记, v - 摇奖对象中奖概率)</param>
/// <param name="custom">自定义随机公式</param>
/// <param name="seed">随机种子</param>
/// <returns>中奖对象标记</returns>
public static T GetWinner <T> (ListKV <T, int> store, CustomRandomFormula custom = null, int seed = -1)
{
int jackpot = 1;
for (int i = 0; i < store.Count; i++)
{
jackpot += store[i].Val;
}
int target = GetRandom(0, jackpot, custom, seed);
Debug.LogFormat("[Dice] random : {0}", target);
for (int i = 0; i < store.Count; i++)
{
int _minVal = i == 0 ? 0 : store[i - 1].Val;
int _maxVal = 0;
for (int j = 0; j <= i; j++)
{
_maxVal += store[j].Val;
}
if (target >= _minVal && target < _maxVal)
{
return(store[i].Key);
}
}
throw new System.Exception("获取摇奖结果失败,请检查");
}
/// <summary>
/// 获得中奖人
/// </summary>
/// <param name="store">参与摇奖的对象(的概率)</param>
/// <param name="custom">自定义随机公式</param>
/// <param name="seed">随机种子</param>
/// <returns>中奖对象的索引</returns>
public static int GetWinner(int[] store, CustomRandomFormula custom = null, int seed = -1)
{
ListKV <int, int> _store = new ListKV <int, int> ();
for (int i = 0; i < store.Length; i++)
{
_store.Add(i, store[i]);
}
return(GetWinner(_store, custom, seed));
}
/// <summary>
/// 获得随机数
/// </summary>
/// <param name="min">最小值</param>
/// <param name="max">最大值</param>
/// <param name="custom">自定义随机公式</param>
/// <param name="seed">随机种子</param>
/// <returns></returns>
private static int GetRandom(int min, int max, CustomRandomFormula custom = null, int seed = -1)
{
if (custom == null)
{
seed = seed < 0 ? (int)System.DateTime.Now.Ticks : seed;
MersenneTwister mersenne = new MersenneTwister(seed);
return(mersenne.Next(min, max));
}
else
{
return(custom(min, max, seed));
}
}
/// <summary>
/// 获得结果(为了较高的精准度使用万分比)
/// </summary>
/// <param name="probability">中奖概率</param>
/// <param name="custom">自定义随机公式</param>
/// <param name="seed">随机种子</param>
/// <returns>true - 中奖; false - 未中奖</returns>
public static bool GetResult(int probability, CustomRandomFormula custom = null, int seed = -1)
{
int target = GetRandom(0, 10001, custom, seed);
Debug.LogFormat("[Dice] random : {0}", target);
if (target <= probability)
{
return(true);
}
else
{
return(false);
}
}
