import pygame import random import sys # 初始化pygame pygame.init() # 游戏参数 WIDTH, HEIGHT = 600, 600 GRID_SIZE = 20 GRID_WIDTH = WIDTH // GRID_SIZE GRID_HEIGHT = HEIGHT // GRID_SIZE FPS = 10 # 颜色定义 BLACK = (0, 0, 0) WHITE = (255, 255, 255) GREEN = (0, 255, 0) RED = (255, 0, 0) BLUE = (0, 120, 255) DARK_GREEN = (0, 180, 0) # 方向常量 UP = (0, -1) DOWN = (0, 1) LEFT = (-1, 0) RIGHT = (1, 0) class Snake: def __init__(self): self.reset() def reset(self): self.length = 3 self.positions = [(GRID_WIDTH // 2, GRID_HEIGHT // 2)] self.direction = RIGHT self.score = 0 self.grow_pending = 2 # 初始长度为3 def get_head_position(self): return self.positions[0] def turn(self, new_direction): # 防止直接反向移动 if (new_direction[0] * -1, new_direction[1] * -1) != self.direction: self.direction = new_direction def move(self): head = self.get_head_position() new_x = (head[0] + self.direction[0]) % GRID_WIDTH new_y = (head[1] + self.direction[1]) % GRID_HEIGHT new_position = (new_x, new_y) # 检查是否撞到自己 if new_position in self.positions[1:]: return False self.positions.insert(0, new_position) if self.grow_pending > 0: self.grow_pending -= 1 else: self.positions.pop() return True def grow(self): self.grow_pending += 1 self.score += 10 def draw(self, surface): for i, p in enumerate(self.positions): # 绘制蛇身 rect = pygame.Rect(p[0] * GRID_SIZE, p[1] * GRID_SIZE, GRID_SIZE, GRID_SIZE) if i == 0: # 蛇头 pygame.draw.rect(surface, DARK_GREEN, rect) pygame.draw.rect(surface, GREEN, rect, 1) else: # 蛇身 pygame.draw.rect(surface, GREEN, rect) pygame.draw.rect(surface, DARK_GREEN, rect, 1) # 蛇头眼睛 if i == 0: eye_size = GRID_SIZE // 5 eye_offset = GRID_SIZE // 4 # 根据方向确定眼睛位置 if self.direction == RIGHT: left_eye = (rect.right - eye_offset, rect.top + eye_offset) right_eye = (rect.right - eye_offset, rect.bottom - eye_offset) elif self.direction == LEFT: left_eye = (rect.left + eye_offset, rect.top + eye_offset) right_eye = (rect.left + eye_offset, rect.bottom - eye_offset) elif self.direction == UP: left_eye = (rect.left + eye_offset, rect.top + eye_offset) right_eye = (rect.right - eye_offset, rect.top + eye_offset) else: # DOWN left_eye = (rect.left + eye_offset, rect.bottom - eye_offset) right_eye = (rect.right - eye_offset, rect.bottom - eye_offset) pygame.draw.circle(surface, WHITE, left_eye, eye_size) pygame.draw.circle(surface, WHITE, right_eye, eye_size) pygame.draw.circle(surface, BLACK, left_eye, eye_size // 2) pygame.draw.circle(surface, BLACK, right_eye, eye_size // 2) class Food: def __init__(self): self.position = (0, 0) self.randomize_position() def randomize_position(self): self.position = (random.randint(0, GRID_WIDTH - 1), random.randint(0, GRID_HEIGHT - 1)) def draw(self, surface): rect = pygame.Rect(self.position[0] * GRID_SIZE, self.position[1] * GRID_SIZE, GRID_SIZE, GRID_SIZE) pygame.draw.rect(surface, RED, rect) pygame.draw.rect(surface, (255, 150, 150), rect, 2) # 添加食物内部的细节 pygame.draw.circle(surface, (255, 200, 200), rect.center, GRID_SIZE // 4) class Game: def __init__(self): self.screen = pygame.display.set_mode((WIDTH, HEIGHT)) pygame.display.set_caption("贪吃蛇 Python版") self.clock = pygame.time.Clock() self.font = pygame.font.SysFont('simhei', 25) self.big_font = pygame.font.SysFont('simhei', 50) self.snake = Snake() self.food = Food() self.speed = FPS self.game_over = False self.paused = False def draw_grid(self): for x in range(0, WIDTH, GRID_SIZE): pygame.draw.line(self.screen, (40, 40, 40), (x, 0), (x, HEIGHT)) for y in range(0, HEIGHT, GRID_SIZE): pygame.draw.line(self.screen, (40, 40, 40), (0, y), (WIDTH, y)) def draw_score(self): score_text = self.font.render(f'得分: {self.snake.score}', True, WHITE) self.screen.blit(score_text, (10, 10)) length_text = self.font.render( f'长度: {len(self.snake.positions)}', True, WHITE) self.screen.blit(length_text, (10, 40)) def draw_game_over(self): overlay = pygame.Surface((WIDTH, HEIGHT)) overlay.set_alpha(180) overlay.fill(BLACK) self.screen.blit(overlay, (0, 0)) game_over_text = self.big_font.render('游戏结束!', True, RED) score_text = self.font.render(f'最终得分: {self.snake.score}', True, WHITE) restart_text = self.font.render('按R键重新开始，按ESC键退出', True, GREEN) self.screen.blit(game_over_text, (WIDTH//2 - game_over_text.get_width()//2, HEIGHT//2 - 60)) self.screen.blit( score_text, (WIDTH//2 - score_text.get_width()//2, HEIGHT//2)) self.screen.blit( restart_text, (WIDTH//2 - restart_text.get_width()//2, HEIGHT//2 + 60)) def draw_pause(self): overlay = pygame.Surface((WIDTH, HEIGHT)) overlay.set_alpha(180) overlay.fill(BLACK) self.screen.blit(overlay, (0, 0)) pause_text = self.big_font.render('游戏暂停', True, BLUE) continue_text = self.font.render('按P键继续游戏', True, WHITE) self.screen.blit( pause_text, (WIDTH//2 - pause_text.get_width()//2, HEIGHT//2 - 30)) self.screen.blit(continue_text, (WIDTH//2 - continue_text.get_width()//2, HEIGHT//2 + 30)) def check_food_collision(self): if self.snake.get_head_position() == self.food.position: self.snake.grow() self.food.randomize_position() # 确保食物不出现在蛇身上 while self.food.position in self.snake.positions: self.food.randomize_position() # 每得100分加快速度 if self.snake.score % 100 == 0: self.speed += 1 def run(self): while True: for event in pygame.event.get(): if event.type == pygame.QUIT: pygame.quit() sys.exit() if event.type == pygame.KEYDOWN: if self.game_over: if event.key == pygame.K_r: self.snake.reset() self.food.randomize_position() self.game_over = False self.speed = FPS elif event.key == pygame.K_ESCAPE: pygame.quit() sys.exit() elif self.paused: if event.key == pygame.K_p: self.paused = False else: if event.key == pygame.K_UP: self.snake.turn(UP) elif event.key == pygame.K_DOWN: self.snake.turn(DOWN) elif event.key == pygame.K_LEFT: self.snake.turn(LEFT) elif event.key == pygame.K_RIGHT: self.snake.turn(RIGHT) elif event.key == pygame.K_p: self.paused = True elif event.key == pygame.K_ESCAPE: pygame.quit() sys.exit() if not self.game_over and not self.paused: if not self.snake.move(): self.game_over = True self.check_food_collision() # 绘制 self.screen.fill(BLACK) self.draw_grid() self.snake.draw(self.screen) self.food.draw(self.screen) self.draw_score() if self.game_over: self.draw_game_over() elif self.paused: self.draw_pause() pygame.display.flip() self.clock.tick(self.speed) if __name__ == "__main__": print("贪吃蛇游戏开始！") print("控制键：↑↓←→ 方向键控制移动") print("P键：暂停/继续 ESC键：退出游戏") print("游戏结束后按R键重新开始") print("-" * 30) game = Game() game.run()