unity限定概率抽卡的脚本

以下是一个简单的 Unity C# 脚本，用于限定概率抽卡：

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class CardGame : MonoBehaviour {

    public List<Card> cards = new List<Card>();
    public GameObject cardPrefab;
    public Transform cardSpawnPoint;

    private float rareProbability = 0.2f;
    private float epicProbability = 0.05f;
    private float legendaryProbability = 0.01f;

    void Start () {
        for (int i = 0; i < 100; i++) {
            float roll = Random.Range(0f, 1f);
            Card card = null;
            if (roll <= legendaryProbability) {
                card = GetRandomCardByRarity(Rarity.Legendary);
            } else if (roll <= epicProbability) {
                card = GetRandomCardByRarity(Rarity.Epic);
            } else if (roll <= rareProbability) {
                card = GetRandomCardByRarity(Rarity.Rare);
            } else {
                card = GetRandomCardByRarity(Rarity.Common);
            }
            GameObject newCard = Instantiate(cardPrefab, cardSpawnPoint.position, Quaternion.identity) as GameObject;
            newCard.GetComponent<CardDisplay>().card = card;
        }
    }

    Card GetRandomCardByRarity(Rarity rarity) {
        List<Card> cardsWithRarity = new List<Card>();
        foreach (Card card in cards) {
            if (card.rarity == rarity) {
                cardsWithRarity.Add(card);
            }
        }
        int randomIndex = Random.Range(0, cardsWithRarity.Count);
        return cardsWithRarity[randomIndex];
    }
}

public enum Rarity {
    Common,
    Rare,
    Epic,
    Legendary
}

[System.Serializable]
public class Card {
    public string name;
    public Rarity rarity;
    public int attack;
    public int defense;
}

这个脚本假设你有一些卡牌对象和一个卡牌预制体。在 Start() 函数中，我们循环 100 次来模拟抽 100 张卡牌。在每次循环中，我们生成一个随机数，然后根据概率分配卡牌的稀有度。如果随机数小于等于传奇稀有度的概率，我们就从传奇稀有度的所有卡牌中随机获取一张。如果随机数小于等于史诗稀有度的概率，我们就从史诗稀有度的所有卡牌中随机获取一张，以此类推。获取到卡牌后，我们实例化一个卡牌预制体，将其显示在屏幕上。

你可以根据自己的需求来修改卡牌稀有度的概率分配和抽卡次数。