|
- """贪吃蛇"""
- import random
- import sys
- import time
- import pygame
- from pygame.locals import *
- from collecti** import deque
- SCREEN_WIDTH = 600 # 屏幕宽度
- SCREEN_HEIGHT = 480 # 屏幕高度
- SIZE = 20 # 小方格大小
- LINE_WIDTH = 1 # 网格线宽度
- # 游戏区域的坐标范围
- SCOPE_X = (0, SCREEN_WIDTH // SIZE - 1)
- SCOPE_Y = (2, SCREEN_HEIGHT // SIZE - 1)
- # 食物的分值及颜色
- FOOD_STYLE_LIST = [(10, (255, 100, 100)), (20, (100, 255, 100)), (30, (100, 100, 255))]
- LIGHT = (100, 100, 100)
- DARK = (200, 200, 200) # 蛇的颜色
- BLACK = (0, 0, 0) # 网格线颜色
- RED = (200, 30, 30) # 红色,GAME OVER 的字体颜色
- BGCOLOR = (40, 40, 60) # 背景色
- def print_text(screen, font, x, y, text, fcolor=(255, 255, 255)):
- imgText = font.render(text, True, fcolor)
- screen.blit(imgText, (x, y))
- # 初始化蛇
- def init_snake():
- snake = deque()
- snake.append((2, SCOPE_Y[0]))
- snake.append((1, SCOPE_Y[0]))
- snake.append((0, SCOPE_Y[0]))
- return snake
- def create_food(snake):
- food_x = random.randint(SCOPE_X[0], SCOPE_X[1])
- food_y = random.randint(SCOPE_Y[0], SCOPE_Y[1])
- while (food_x, food_y) in snake:
- # 如果食物出现在蛇身上,则重来
- food_x = random.randint(SCOPE_X[0], SCOPE_X[1])
- food_y = random.randint(SCOPE_Y[0], SCOPE_Y[1])
- return food_x, food_y
- def get_food_style():
- return FOOD_STYLE_LIST[random.randint(0, 2)]
- def main():
- pygame.init()
- screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
- pygame.display.set_caption('贪吃蛇')
- font1 = pygame.font.SysFont('SimHei', 24) # 得分的字体
- font2 = pygame.font.Font(None, 72) # GAME OVER 的字体
- fwidth, fheight = font2.size('GAME OVER')
- # 如果蛇正在向右移动,那么快速点击向下向左,由于程序刷新没那么快,向下事件会被向左覆盖掉,导致蛇后退,直接GAME OVER
- # b 变量就是用于防止这种情况的发生
- b = True
- # 蛇
- snake = init_snake()
- # 食物
- food = create_food(snake)
- food_style = get_food_style()
- # 方向
- pos = (1, 0)
- game_over = True
- start = False # 是否开始,当start = True,game_over = True 时,才显示 GAME OVER
- score = 0 # 得分
- orispeed = 0.5 # 原始速度
- speed = orispeed
- last_move_time = None
- pause = False # 暂停
- while True:
- for event in pygame.event.get():
- if event.type == QUIT:
- sys.exit()
- elif event.type == KEYDOWN:
- if event.key == K_RETURN:
- if game_over:
- start = True
- game_over = False
- b = True
- snake = init_snake()
- food = create_food(snake)
- food_style = get_food_style()
- pos = (1, 0)
- # 得分
- score = 0
- last_move_time = time.time()
- elif event.key == K_SPACE:
- if not game_over:
- pause = not pause
- elif event.key in (K_w, K_UP):
- # 这个判断是为了防止蛇向上移时按了向下键,导致直接 GAME OVER
- if b and not pos[1]:
- pos = (0, -1)
- b = False
- elif event.key in (K_s, K_DOWN):
- if b and not pos[1]:
- pos = (0, 1)
- b = False
- elif event.key in (K_a, K_LEFT):
- if b and not pos[0]:
- pos = (-1, 0)
- b = False
- elif event.key in (K_d, K_RIGHT):
- if b and not pos[0]:
- pos = (1, 0)
- b = False
- # 填充背景色
- screen.fill(BGCOLOR)
- # 画网格线 竖线
- for x in range(SIZE, SCREEN_WIDTH, SIZE):
- pygame.draw.line(screen, BLACK, (x, SCOPE_Y[0] * SIZE), (x, SCREEN_HEIGHT), LINE_WIDTH)
- # 画网格线 横线
- for y in range(SCOPE_Y[0] * SIZE, SCREEN_HEIGHT, SIZE):
- pygame.draw.line(screen, BLACK, (0, y), (SCREEN_WIDTH, y), LINE_WIDTH)
- if not game_over:
- curTime = time.time()
- if curTime - last_move_time > speed:
- if not pause:
- b = True
- last_move_time = curTime
- next_s = (snake[0][0] + pos[0], snake[0][1] + pos[1])
- if next_s == food:
- # 吃到了食物
- snake.appendleft(next_s)
- score += food_style[0]
- speed = orispeed - 0.03 * (score // 100)
- food = create_food(snake)
- food_style = get_food_style()
- else:
- if SCOPE_X[0] <= next_s[0] <= SCOPE_X[1] and SCOPE_Y[0] <= next_s[1] <= SCOPE_Y[1] \
- and next_s not in snake:
- snake.appendleft(next_s)
- snake.pop()
- else:
- game_over = True
- # 画食物
- if not game_over:
- # 避免 GAME OVER 的时候把 GAME OVER 的字给遮住了
- pygame.draw.rect(screen, food_style[1], (food[0] * SIZE, food[1] * SIZE, SIZE, SIZE), 0)
- # 画蛇
- for s in snake:
- pygame.draw.rect(screen, DARK, (s[0] * SIZE + LINE_WIDTH, s[1] * SIZE + LINE_WIDTH,
- SIZE - LINE_WIDTH * 2, SIZE - LINE_WIDTH * 2), 0)
- print_text(screen, font1, 30, 7, f'速度: {score//100}')
- print_text(screen, font1, 450, 7, f'得分: {score}')
- if game_over:
- if start:
- print_text(screen, font2, (SCREEN_WIDTH - fwidth) // 2, (SCREEN_HEIGHT - fheight) // 2, 'GAME OVER', RED)
- pygame.display.update()
- if __name__ == '__main__':
- main()
复制代码 更多代码来找我
|
|