以下是一个示例代码,演示了如何使用加权移动评分来计算AI的行动:
import numpy as np
# 定义一个游戏状态类
class GameState:
def __init__(self):
self.board = np.zeros((3, 3)) # 3x3的棋盘,0表示空格,1表示玩家1的棋子,-1表示玩家2的棋子
self.current_player = 1 # 当前玩家
# 返回可行的行动
def get_possible_moves(self):
return np.argwhere(self.board == 0)
# 返回下一个游戏状态
def make_move(self, move):
new_state = GameState()
new_state.board = np.copy(self.board)
new_state.board[move[0], move[1]] = self.current_player
new_state.current_player = -self.current_player
return new_state
# 判断当前游戏状态是否结束
def is_game_over(self):
# 判断行是否连成一线
if np.any(np.abs(np.sum(self.board, axis=1)) == 3):
return True
# 判断列是否连成一线
if np.any(np.abs(np.sum(self.board, axis=0)) == 3):
return True
# 判断对角线是否连成一线
if abs(np.trace(self.board)) == 3 or abs(np.trace(np.fliplr(self.board))) == 3:
return True
# 判断是否平局
if np.all(self.board != 0):
return True
return False
# 返回当前玩家的得分
def get_score(self):
# 判断行是否连成一线
if np.any(np.sum(self.board, axis=1) == 3):
return 1 if self.current_player == 1 else -1
# 判断列是否连成一线
if np.any(np.sum(self.board, axis=0) == 3):
return 1 if self.current_player == 1 else -1
# 判断对角线是否连成一线
if np.trace(self.board) == 3 or np.trace(np.fliplr(self.board)) == 3:
return 1 if self.current_player == 1 else -1
# 平局
return 0
# 定义一个AI类
class AI:
def __init__(self):
self.max_depth = 4 # 最大搜索深度
# 使用加权移动评分选择最佳行动
def choose_action(self, state):
best_score = float('-inf')
best_action = None
for move in state.get_possible_moves():
new_state = state.make_move(move)
score = self.minimax(new_state, self.max_depth, False)
if score > best_score:
best_score = score
best_action = move
return best_action
# 使用minimax算法搜索最优解
def minimax(self, state, depth, is_maximizing):
if state.is_game_over() or depth == 0:
return state.get_score()
if is_maximizing:
best_score = float('-inf')
for move in state.get_possible_moves():
new_state = state.make_move(move)
score = self.minimax(new_state, depth - 1, False)
best_score = max(best_score, score)
return best_score
else:
best_score = float('inf')
for move in state.get_possible_moves():
new_state = state.make_move(move)
score = self.minimax(new_state, depth - 1, True)
best_score = min(best_score, score)
return best_score
# 创建游戏状态和AI对象
state = GameState()
ai = AI()
# 使用AI进行行动选择
action = ai.choose_action(state)
print(f"AI的行动: {action}")
在上述代码中,GameState
类表示游戏的状态,包括棋盘和当前玩家。get_possible_moves()
方法返回当前可行的行动,make_move()
方法返回下一个游戏状态。is_game_over()
方法判断游戏是否结束,get_score()
方法返回当前玩家的得分。
AI
类表示AI玩家,其中choose_action()
方法使用加权移动评分选择最佳行动
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