死抽同池子容易栽

你以为的3.3池子是30抽一件
有可能100抽一件，也更有可能200抽一件，真是离谱妈妈给离谱开门，离谱到家

哪这么复杂。下面是一个国产 gacha 的抽卡代码。kt 没保底且把未拥有卡加成改成了已拥有卡加成。
```python
import random
from collections import defaultdict
class GachaSystem:
def __init__(self):
# 角色配置表：ID, 名称, 稀有度, 基础权重
m网页链接 = [
(1, "SSR角色A", "SSR", 0.01),
(2, "SSR角色B", "SSR", 0.01),
(3, "SR角色A", "SR", 0.10),
(4, "SR角色B", "SR", 0.10),
(5, "R角色A", "R", 0.78)
]
# 玩家数据
self.player_inventory = defaultdict(int) # 角色ID: 持有数量
self.pity_counter = 0 # 保底计数器
# 仓检参数
self.ADJUST_FACTOR = 2.0 # 未拥有角色权重加成
self.PITY_THRESHOLD = 50 # 硬保底抽数
def adjust_weights(self):
"""根据仓库检测调整抽取权重"""
adjusted_weights = []
for char in self.characters:
char_id, _, rarity, base = char
# 如果玩家未持有该角色且是SSR，增加权重
if self.player_inventory[char_id] == 0 and rarity == "SSR":
adjusted_weights.append(base * self.ADJUST_FACTOR)
else:
adjusted_weights.append(base)
return adjusted_weights
def apply_pity_system(self, weights):
"""保底系统应用"""
# 硬保底机制：超过阈值必得SSR
if self.pity_counter >= self.PITY_THRESHOLD:
print("触发硬保底！")
return [w*100 if rarity == "SSR" else 0 for (_, _, rarity, _), w in zip(self.characters, weights)]
return weights
def single_pull(self):
"""单次抽取"""
# 获取调整后的权重
weights = self.adjust_weights()
# 应用保底系统
weights = self.apply_pity_system(weights)
# 归一化权重
total = sum(weights)
normalized_weights = [w/total for w in weights]
# 执行抽取
selected = random.choices(
population=self.characters,
weights=normalized_weights,
k=1
)[0]
# 更新数据
self.player_inventory[selected[0]]