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【作品介绍】

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【作品源代码】

import random
import sys
import pygame
from pygame.locals import *

FPS = 5  # 刷新帧率
WINDOW_WIDTH = 喵0  # 屏幕宽度
WINDOW_HEIGHT = 480  # 屏幕高度
CELLSIZE = 20  # 格子大小
CELLWIDTH = int(WINDOW_WIDTH / CELLSIZE)  # 一行格子的个数
CELLHEIGHT = int(WINDOW_HEIGHT / CELLSIZE)  # 一列格子的个数

WHITE = (255, 255, 255)  # 白色
BLACK = (0, 0, 0)  # 黑色
RED = (255, 0, 0)  # 红色
GREEN = (0, 255, 0)  # 绿色
DARKGREEN = (0, 155, 0)  # 浅绿色
DARKGRAY = (40, 40, 40)  # 浅灰色
BGCOLOR = BLACK  # 背景色--黑色

"""新加程序1 开始++++++++++++++++++++++++++++++++++++++++++++++++++"""
UP = 'up'
DOWN = 'down'
LEFT = 'left'
RIGHT = 'right'
"""新加程序1 结束=================================================="""

def main():  # 游戏主逻辑
    global FPSCLOCK, SCREEN, BASICFONT  # FPS    游戏屏幕   文字字体
    pygame.init()  # 实例化
    FPSCLOCK = pygame.time.Clock()  # 帧率刷新
    SCREEN = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))  # 游戏屏幕
    BASICFONT = pygame.font.Font(r'C:\Windows\Fonts\simkai.ttf', 18)    # 文字设置
    pygame.display.set_caption('贪吃蛇')  # 游戏名称
    showStartScreen()
    while True:  # 事件控制
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()
        runGame()
        showGameOverScreen()


def showStartScreen():
    WINDOW_WIDTH1 = 喵0  # 屏幕宽度
    WINDOW_HEIGHT1 = 480  # 屏幕高度
    titleFont = pygame.font.Font(r'C:\Windows\Fonts\simkai.ttf', 100)  # 游戏首页旋转文字的字体设置
    titleSurf1 = titleFont.render('贪吃蛇', True, WHITE, DARKGREEN)  # 文字 1 设置
    titleSurf2 = titleFont.render('贪吃蛇', True, GREEN)  # 文字 2 设置
    degrees1 = 0  # 文字 1 的角度
    degrees2 = 0  # 文字 2 的角度
    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()
            elif event.type == KEYDOWN:
                return
        SCREEN.fill(BGCOLOR)
        rotatedSurf1 = pygame.transform.rotate(titleSurf1, degrees1)  # 旋转文字1
        rotatedRect1 = rotatedSurf1.get_rect()  # 获取外切矩形
        rotatedRect1.center = (WINDOW_WIDTH1 / 2, WINDOW_HEIGHT1 / 2)  # 以文字的中心点，设置文字摆放位置
        SCREEN.blit(rotatedSurf1, rotatedRect1)

        rotatedSurf2 = pygame.transform.rotate(titleSurf2, degrees2)  # 旋转文字2
        rotatedRect2 = rotatedSurf2.get_rect()  # 获取外切矩形
        rotatedRect2.center = (WINDOW_WIDTH1 / 2, WINDOW_HEIGHT1 / 2)  # 以文字的中心点，设置文字摆放位置
        SCREEN.blit(rotatedSurf2, rotatedRect2)
        drawPressKeyMsg()   #  函数调用
        pygame.display.update()
        FPSCLOCK.tick(FPS)
        degrees1 += 3
        degrees2 += 7


def drawPressKeyMsg():
    pressKeySurf = BASICFONT.render('按任意键进入游戏', True, WHITE)
    pressKeyRect = pressKeySurf.get_rect()
    pressKeyRect.topleft = (WINDOW_WIDTH - 200, WINDOW_HEIGHT - 30)
    SCREEN.blit(pressKeySurf, pressKeyRect)


def drawGrid(): 
    for x in range(0, WINDOW_WIDTH, CELLSIZE):
        pygame.draw.line(SCREEN, DARKGRAY, (x, 0), (x, WINDOW_HEIGHT))
    for y in range(0, WINDOW_HEIGHT, CELLSIZE):
        pygame.draw.line(SCREEN, DARKGRAY, (0, y), (WINDOW_WIDTH, y ))


def getRandomLocation():
    return {'x' : random.randint(0, CELLWIDTH - 1), 'y' : random.randint(0, CELLHEIGHT - 1)}


def runGame():
    # 随机一个贪吃蛇的位置
    startx = random.randint(5, CELLWIDTH - 5)
    starty = random.randint(5, CELLHEIGHT - 5)
    # 贪吃蛇
    wormCoords = [{'x': startx,'y': starty},
                    {'x': startx - 1,'y':starty},
                    {'x': startx - 2, 'y':starty}]
    """新加程序1 开始++++++++++++++++++++++++++++++++++++++++++++++++++"""
    # 初始移动方向
    direction = RIGHT
    """新加程序1 结束=================================================="""
    # 苹果
    apple = getRandomLocation()
    while True:
        # 处理事件
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()
            """新加程序3 开始++++++++++++++++++++++++++++++++++++++++++++++++++"""
            if event.type == KEYDOWN:        
                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:
                    sys.exit()
        """新加程序3 结束=================================================="""

        """新加程序4 开始++++++++++++++++++++++++++++++++++++++++++++++++++"""
        # 贪吃蛇撞墙
        if wormCoords[0]['x'] == -1 or wormCoords[0]['x'] == CELLWIDTH \
            or  wormCoords[0]['y'] == -1 or wormCoords[0]['y'] == CELLHEIGHT:
                return
        for wormBody in wormCoords[1:]:  # 蛇头碰到了自己
                if wormBody['x'] == wormCoords[0]['x'] and \
                wormBody['y'] == wormCoords[0]['y']:
                        return
        """新加程序4 结束=================================================="""

        """新加程序5 开始++++++++++++++++++++++++++++++++++++++++++++++++++"""
        # 贪吃蛇吃到苹果
        if wormCoords[0]['x'] == apple['x'] and wormCoords[0]['y'] == apple['y']:
            # 再生成随机苹果
            apple = getRandomLocation()
        else:
            del wormCoords[-1] # 删除最后一节
        """新加程序5 结束=================================================="""


        """新加程序2 开始++++++++++++++++++++++++++++++++++++++++++++++++++"""
        if direction == UP:
            newHead = {'x': wormCoords[0]['x'], 'y':wormCoords[0]['y']-1}
        elif direction == DOWN:
            newHead = {'x': wormCoords[0]['x'], 'y':wormCoords[0]['y']+1}
        elif direction == LEFT:
            newHead = {'x': wormCoords[0]['x']-1, 'y':wormCoords[0]['y']}
        elif direction == RIGHT:
            newHead = {'x': wormCoords[0]['x']+1, 'y':wormCoords[0]['y']}
        wormCoords.insert(0, newHead)  # 新知识  insert(位置，对象)   用于将指定对象插入列表的指定位置。
        """新加程序2 结束=================================================="""

        SCREEN.fill(BGCOLOR)
        drawGrid()   #  函数调用
        drawWorm(wormCoords)  # 绘制贪吃蛇
        drawApple(apple) # 绘制苹果
        drawScore(len(wormCoords) - 3) # 绘制分数
        pygame.display.update()
        FPSCLOCK.tick(FPS)


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


def drawScore(score):
    scoreSurf = BASICFONT.render('分数：%s' % (score), True, WHITE)
    scoreRect = scoreSurf.get_rect()
    scoreRect.topleft = (WINDOW_WIDTH - 120, 10)
    SCREEN.blit(scoreSurf, scoreRect)


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


"""新加程序6 开始++++++++++++++++++++++++++++++++++++++++++++++++++"""
def showGameOverScreen():
    gameOverFont = pygame.font.Font('C://Windows//Fonts//msyh.ttc', 150)
    gameSurf = gameOverFont.render('游戏', True, WHITE)
    overSurf = gameOverFont.render('失败', True, WHITE)
    gameRect = gameSurf.get_rect()
    overRect = overSurf.get_rect()
    gameRect.midtop = (WINDOW_WIDTH / 2, 10)
    overRect.midtop = (WINDOW_WIDTH / 2, gameRect.height + 10 + 25)
    SCREEN.blit(gameSurf, gameRect)
    SCREEN.blit(overSurf, overRect)
    drawPressKeyMsg()
    pygame.display.update()
    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()
            return
"""新加程序6 结束=================================================="""

if __name__ == "__main__":
    main()

 

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