贪吃蛇-Python-比较流畅的版本

· 教程大全 · 3338

仅需要添加一个显示字体即可运行
这里用的Simhei.ttf
Simhei.ttf中文字体下载链接

# -*- coding:utf-8 -*-
"""
pip install pygame  ~11Mb
比较流畅的版本:
开始游戏:Enter
操作按键:WASD或上下左右
退出游戏:ESC
"""
# 1. 导入包
import pygame, sys, random
from pygame.locals import *

# 2.参数设置
FPS = 15
WINDOWWIDTH = 640
WINDOWHEIGHT = 480
CELLSIZE = 20
assert WINDOWWIDTH % CELLSIZE == 0, "Window width must be a multiple of cell size"
assert WINDOWHEIGHT % CELLSIZE == 0, "Window height muset be multiple of cell size"
CELLWIDTH = WINDOWWIDTH / CELLSIZE  # 屏幕上在X坐标轴上显示的方格数
CELLHEIGHT = WINDOWHEIGHT / CELLSIZE  # 屏幕上在Y坐标轴上显示的方格数

# RGB
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
DARKGREEN = (0, 155, 0)
DARKGRAY = (40, 40, 40)
BGCOLOR = BLACK
#操作按键
UP = 'up'
DOWN = 'down'
LEFT = 'left'
RIGHT = 'right'

HEAD = 0  # 很巧妙的运用


# main function
def main():
    global FPSCLOCK, DISPLAYSURF, BASICFONT

    pygame.init()
    FPSCLOCK = pygame.time.Clock()
    DISPLAYSURF = pygame.display.set_mode((WINDOWWIDTH, WINDOWHEIGHT))
    BASICFONT = pygame.font.Font('SimHei.ttf', 18)#中文字体,可以自行下载,或者选择其他字体
    pygame.display.set_caption('贪吃蛇')#游戏界面名称

    showStartScreen()  # 显示起始画面
    while True:
        runGame()  # 运行游戏主体
        showGameOverScreen()  # 显示游戏结束画面


def runGame():
    # 设置蛇身开始在随机位置
    startx = random.randint(5, CELLWIDTH - 6)
    starty = random.randint(5, CELLHEIGHT - 6)
    wormCoods = [{'x': startx, 'y': starty},
                 {'x': startx - 1, 'y': starty},
                 {'x': startx - 2, 'y': starty}]
    direction = RIGHT  # 蛇初始方向向右

    # 得到一个随机苹果的位置
    apple = getRandomLocation()

    while True:
        for event in pygame.event.get():
            if event.type == QUIT:
                terminate()
            elif event.type == KEYDOWN:  # 处理蛇的移动方向
                if (event.key == K_LEFT or event.key == K_a) and direction != RIGHT:
                    direction = LEFT
                elif (event.key == K_RIGHT or event.key == K_d) and direction != LEFT:
                    direction = RIGHT
                elif (event.key == K_UP or event.key == K_w) and direction != DOWN:
                    direction = UP
                elif (event.key == K_DOWN or event.key == K_s) and direction != UP:
                    direction = DOWN
                elif event.key == K_ESCAPE:
                    terminate()
        # 看蛇身是否撞击到自己或四周墙壁
        if wormCoods[HEAD]['x'] == -1 or wormCoods[HEAD]['x'] == CELLWIDTH or wormCoods[HEAD]['y'] == -1 or \
                wormCoods[HEAD]['y'] == CELLHEIGHT:
            return  # game over
        for wormBody in wormCoods[1:]:
            if wormBody['x'] == wormCoods[HEAD]['x'] and wormBody['y'] == wormCoods[HEAD]['y']:
                return  # game over
        # 判断蛇是否吃到苹果
        if wormCoods[HEAD]['x'] == apple['x'] and wormCoods[HEAD]['y'] == apple['y']:
            apple = getRandomLocation()  # 随机显示一个新的苹果
        else:
            del wormCoods[-1]  # 删除蛇的尾巴，即列表最后一个小方块
        # 根据蛇的移动方向，给蛇添加一个新的头部
        if direction == UP:
            newHead = {'x': wormCoods[HEAD]['x'], 'y': wormCoods[HEAD]['y'] - 1}
        elif direction == DOWN:
            newHead = {'x': wormCoods[HEAD]['x'], 'y': wormCoods[HEAD]['y'] + 1}
        elif direction == LEFT:
            newHead = {'x': wormCoods[HEAD]['x'] - 1, 'y': wormCoods[HEAD]['y']}
        elif direction == RIGHT:
            newHead = {'x': wormCoods[HEAD]['x'] + 1, 'y': wormCoods[HEAD]['y']}
        wormCoods.insert(0, newHead)
        DISPLAYSURF.fill(BGCOLOR)
        drawGrid()  # 画屏幕上的小方格
        drawWorm(wormCoods)  # 画蛇身
        drawApple(apple)  # 画苹果
        drawScore(len(wormCoods) - 3)  # 显示蛇身长度计算玩家的分数
        pygame.display.update()
        FPSCLOCK.tick(FPS)


# 提示按键消息
def drawPressKeyMsg():
    pressKeySurf = BASICFONT.render('Press a key to play.', True, DARKGRAY)
    pressKeyRect = pressKeySurf.get_rect()
    pressKeyRect.topleft = (WINDOWWIDTH - 200, WINDOWHEIGHT - 30)
    DISPLAYSURF.blit(pressKeySurf, pressKeyRect)


# 检测按键游戏是否要退出,可以ESC
def checkForKeyPress():
    if len(pygame.event.get(QUIT)) > 0:
        terminate()
    keyUpEvents = pygame.event.get(KEYUP)
    if len(keyUpEvents) == 0:
        return None
    if keyUpEvents[0].key == K_ESCAPE:
        terminate()
    return keyUpEvents[0].key


# 显示开始界面
def showStartScreen():
    titleFont = pygame.font.Font('SimHei.ttf', 100)
    titleSurf1 = titleFont.render('Hello!', True, WHITE, DARKGREEN)
    titleSurf2 = titleFont.render('贪吃蛇大作战!', True, GREEN)

    degrees1 = 0
    degrees2 = 0
    while True:
        DISPLAYSURF.fill(BGCOLOR)
        rotatedSurf1 = pygame.transform.rotate(titleSurf1, degrees1)
        rotatedRect1 = rotatedSurf1.get_rect()
        rotatedRect1.center = (WINDOWWIDTH / 2, WINDOWHEIGHT / 2)
        DISPLAYSURF.blit(rotatedSurf1, rotatedRect1)

        rotatedSurf2 = pygame.transform.rotate(titleSurf2, degrees2)
        rotatedRect2 = rotatedSurf2.get_rect()
        rotatedRect2.center = (WINDOWWIDTH / 2, WINDOWHEIGHT / 2)
        DISPLAYSURF.blit(rotatedSurf2, rotatedRect2)

        drawPressKeyMsg()

        if checkForKeyPress():
            pygame.event.get()
            return
        pygame.display.update()
        FPSCLOCK.tick(FPS)
        degrees1 += 3
        degrees2 += 7


# 游戏退出
def terminate():
    pygame.quit()
    sys.exit()


# 随机显示苹果的位置
def getRandomLocation():
    return {'x': random.randint(0, CELLWIDTH - 1), 'y': random.randint(0, CELLHEIGHT - 1)}


# 游戏结束时的画面
def showGameOverScreen():
    gameOverFont = pygame.font.Font('SimHei.ttf', 100)
    gameSurf = gameOverFont.render('GAME', True, RED)
    overSurf = gameOverFont.render('OVER', True, RED)
    gameRect = gameSurf.get_rect()
    overRect = overSurf.get_rect()
    gameRect.midtop = (WINDOWWIDTH / 2, 10)
    overRect.midtop = (WINDOWWIDTH / 2, gameRect.height + 10 + 25)

    DISPLAYSURF.blit(gameSurf, gameRect)
    DISPLAYSURF.blit(overSurf, overRect)
    drawPressKeyMsg()
    pygame.display.update()
    pygame.time.wait(500)
    checkForKeyPress()

    while True:
        if checkForKeyPress():
            pygame.event.get()
            return

#得分
def drawScore(score):
    scoreSurf = BASICFONT.render('Score: %s' % (score), True, WHITE)
    scoreRect = scoreSurf.get_rect()
    scoreRect.topleft = (WINDOWWIDTH - 120, 10)
    DISPLAYSURF.blit(scoreSurf, scoreRect)

#蛇体
def drawWorm(wormCoods):
    for coord in wormCoods:
        x = coord['x'] * CELLSIZE
        y = coord['y'] * CELLSIZE
        wormSegmentRect = pygame.Rect(x, y, CELLSIZE, CELLSIZE)
        pygame.draw.rect(DISPLAYSURF, DARKGREEN, wormSegmentRect)
        wormInnerSegmentRect = pygame.Rect(x + 4, y + 4, CELLSIZE - 8, CELLSIZE - 8)
        pygame.draw.rect(DISPLAYSURF, GREEN, wormInnerSegmentRect)

#苹果
def drawApple(coord):
    x = coord['x'] * CELLSIZE
    y = coord['y'] * CELLSIZE
    appleRect = pygame.Rect(x, y, CELLSIZE, CELLSIZE)
    pygame.draw.rect(DISPLAYSURF, RED, appleRect)

#网格
def drawGrid():
    for x in range(0, WINDOWWIDTH, CELLSIZE):
        pygame.draw.line(DISPLAYSURF, DARKGRAY, (x, 0), (x, WINDOWHEIGHT))
    for y in range(0, WINDOWHEIGHT, CELLSIZE):
        pygame.draw.line(DISPLAYSURF, DARKGRAY, (0, y), (WINDOWWIDTH, y))


if __name__ == '__main__':
    main()

本文地址：https://blog.csdn.net/HJZ11/article/details/107858749

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