pygame 躲避僵尸

游戏玩法

根据神庙逃亡，实现一个人躲避僵尸的小游戏，主要的是精灵、精灵组之间相撞、相交的处理。
游戏开始随机出现一定的僵尸，随机移动，玩家在一位置上，如果僵尸靠近玩家一定距离，则玩家持续掉血。玩家通过上下左右移动躲避僵尸，屏幕会随机刷新一个加血包，玩家吃了就会加一定的血，并在此刷新血包。

property()

这个函数在类中返回新的属性

property(get,set,del,doc)

参数如上所示，get、set、del分别是获取设值删除调用的，doc是描述的。

精灵类

在原来的精灵类中添加方向和属性即可。

class MySprite(pygame.sprite.Sprite):def __init__(self, target):pygame.sprite.Sprite.__init__(self)self.master_image = Noneself.frame = 0self.old_frame = -1self.frame_width = 1self.frame_height = 1self.first_frame = 0self.last_frame = 0self.columns = 1self.last_time = 0self.direction = 0self.classification = "玩家"def load(self, filename, width, height, columns, direction, classification="玩家"):# 精灵的属性self.classification = classification# 方向self.direction = direction# 载入图片# 780 * 300self.master_image = pygame.image.load(filename).convert_alpha() # 载入图片self.frame_width = width self.frame_height = height self.rect = Rect(0, 0, width, height)self.columns = columns rect = self.master_image.get_rect() self.last_frame = (rect.width // width) * (rect.height // height) - 1 def update(self, current_time, rate=30): # current_time 更新频率 为30if current_time > self.last_time + rate: # 如果当前事件 大于 最后的时间 + 当前的节奏self.frame += 1 # 当前的帧数加一if self.frame > self.last_frame: # 当前最后一帧 则从第一帧开始self.frame = self.first_frame  # 从0开始self.last_time = current_time # 将最后帧值为30# build current frame only if it changedif self.frame != self.old_frame: # 当前帧数不等于老的一帧frame_x = (self.frame % self.columns) * self.frame_widthframe_y = (self.frame // self.columns) * self.frame_heightrect = (frame_x, frame_y, self.frame_width, self.frame_height) # 更新对应的位置self.image = self.master_image.subsurface(rect) # 循环箱已有的方向self.old_frame = self.framedef __str__(self):return str(self.frame) + "," + str(self.first_frame) + \"," + str(self.last_frame) + "," + str(self.frame_width) + \"," + str(self.frame_height) + "," + str(self.columns)

初始画面

和原来一样，先建立简单的画面。

import mySprite1
import pygame, sys, random
from pygame.locals import *def print_text(font, x, y, text, color=(255, 255, 255)):imgText = font.render(text, True, color)screen.blit(imgText, (x, y))# 设置窗口
pygame.init()
screen = pygame.display.set_mode((800, 600))
pygame.display.set_caption("勇闯后半夜")
font = pygame.font.Font(None, 30)
timer = pygame.time.Clock()while True:for event in pygame.event.get():if event.type == QUIT:sys.exit()key = pygame.key.get_pressed()if key[K_ESCAPE]:sys.exit()screen.fill((50, 50, 100))pygame.display.update()

精灵移动函数

如果是僵尸遇到墙壁自动反方向走，根据方向改变对应的位置。

def reversal_direction(mySprite):direction = mySprite.directionif direction == 0:direction = 4elif direction == 2:direction = 6elif direction == 4:direction = 0elif direction == 6:direction = 2mySprite.direction = directiondef increment(mySprite, offset=1):# 上下左右direction = mySprite.directionrect = mySprite.rectif direction == 0:rect.y -= offsetelif direction == 2:rect.x += offsetelif direction == 4:rect.y += offsetelif direction == 6:rect.x -= offset# 超出边界的处理# 超出边界flgboundary = Falseif rect.x < 0:rect.x = 0boundary = Trueif rect.x + mySprite.frame_width > 800:rect.x = 800 - mySprite.frame_widthboundary = Trueif rect.y < 0:rect.y = 0boundary = Trueif rect.y + mySprite.frame_height > 600:rect.y = 600 - mySprite.frame_heightboundary = True# 如果超出边界而且是僵尸的话 则反转方向if boundary and mySprite.classification == "僵尸":reversal_direction(mySprite)

加载玩家

这个是素材的图，如上所示，奇数行便是对应的方向移动。文件大小是768 * 768，可以分为96 * 96的8张。

加载玩家

# 玩家
play_group = pygame.sprite.Group()play = mySprite1()
play.load("farmer walk.png", 96, 96, 8)
play.direction = -1
play_group.rect.x = 96
play_group.rect.y = 96
play_group.add(play)play_group.update(ticks, 50)screen.fill((50, 50, 100))play_group.draw(screen)pygame.display.update()

通过改变帧数修改，根据游戏的结束或是否移动，改变对应的事件

    if not game_over:play.first_frame = play.direction * play.columnsplay.last_frame = play.first_frame + play.columns - 1if play.frame < play.first_frame:play.frame = play.first_frameif not play_moving:play.frame = play.first_frame = play.last_frameelse:increment(play)

控制交互

    if key[K_ESCAPE]:sys.exit()elif key[K_UP]:play.direction = 0play_moving = Trueelif key[K_DOWN]:play.direction = 4play_moving = Trueelif key[K_LEFT]:play.direction = 6play_moving = Trueelif key[K_RIGHT]:play.direction = 2play_moving = Trueelse:play_moving = False

添加僵尸

# 随机生成20个僵尸
for n in range(0, 10):zombie = MySprite()random_direction = random.randint(0, 3) * 2zombie.load("zombie walk.png", 96, 96, 8, random_direction, "僵尸")zombie.rect.x = random.randint(0, 600)zombie.rect.y = random.randint(0, 500)print(zombie.rect)zombie_group.add(zombie)# 设置僵尸for z in zombie_group:z.first_frame = z.direction * z.columnsz.last_frame = z.first_frame + z.columns - 1if z.frame < z.first_frame:z.frame = z.first_frameincrement(z)

添加血包

血包就是单纯的一个图的展示。

health = MySprite()
health.load("health.png", 32, 32, 1)
health.rect.x = random.randint(0, 600)
health.rect.y = random.randint(0, 500)
health_group.add(health)

精灵相互碰撞事件

主要是僵尸和人、人和血包之间的相撞事件

    # 相撞事件attack = Noneattack = pygame.sprite.spritecollideany(play, zombie_group)if attack is not None:if pygame.sprite.collide_rect_ratio(0.5)(play, attack):play_health -= 10attack.rect.x = random.randint(0, 600)attack.rect.y = random.randint(0, 500)else:attack = Noneif pygame.sprite.collide_rect_ratio(0.5)(play, health):play_health += 30if play_health > 100:play_health = 100health.rect.x = random.randint(0, 600)health.rect.y = random.randint(0, 500)if play_health <= 0:game_over = True# 显示血量pygame.draw.rect(screen, (100, 200, 100, 180), Rect(300, 575, 200, 25))pygame.draw.rect(screen, (50, 150, 150, 180), Rect(300, 575, play_health * 2, 25))

完整代码

import pygame, sys, random
from pygame.locals import *
from mySprite1 import *def print_text(font, x, y, text, color=(255, 255, 255)):imgText = font.render(text, True, color)screen.blit(imgText, (x, y))def reversal_direction(mySprite):direction = mySprite.directionif direction == 0:direction = 4elif direction == 2:direction = 6elif direction == 4:direction = 0elif direction == 6:direction = 2mySprite.direction = directiondef increment(mySprite, offset=1):# 上下左右direction = mySprite.directionrect = mySprite.rectif direction == 0:rect.y -= offsetelif direction == 2:rect.x += offsetelif direction == 4:rect.y += offsetelif direction == 6:rect.x -= offset# 超出边界的处理# 超出边界flgboundary = Falseif rect.x < 0:rect.x = 0boundary = Trueif rect.x + mySprite.frame_width > 800:rect.x = 800 - mySprite.frame_widthboundary = Trueif rect.y < 0:rect.y = 0boundary = Trueif rect.y + mySprite.frame_height > 600:rect.y = 600 - mySprite.frame_heightboundary = True# 如果超出边界而且是僵尸的话 则反转方向if boundary and mySprite.classification == "僵尸":reversal_direction(mySprite)# 设置窗口
pygame.init()
screen = pygame.display.set_mode((800, 600))
pygame.display.set_caption("勇闯后半夜")
font = pygame.font.Font(None, 30)
timer = pygame.time.Clock()
game_over = False# 玩家
play_group = pygame.sprite.Group()play = MySprite()
play.load("farmer walk.png", 96, 96, 8, 4)
play.rect.x = 96
play.rect.y = 96
play_moving = False
play_group.add(play)
play_health = 100# 僵尸
zombie_group = pygame.sprite.Group()# 随机生成20个僵尸
for n in range(0, 10):zombie = MySprite()random_direction = random.randint(0, 3) * 2zombie.load("zombie walk.png", 96, 96, 8, random_direction, "僵尸")zombie.rect.x = random.randint(0, 600)zombie.rect.y = random.randint(0, 500)print(zombie.rect)zombie_group.add(zombie)# 血包
health_group = pygame.sprite.Group()health = MySprite()
health.load("health.png", 32, 32, 1)
health.rect.x = random.randint(0, 600)
health.rect.y = random.randint(0, 500)
health_group.add(health)while True:# 设置执行的频率timer.tick(30)ticks = pygame.time.get_ticks()for event in pygame.event.get():if event.type == QUIT:sys.exit()key = pygame.key.get_pressed()if key[K_ESCAPE]:sys.exit()elif key[K_UP]:play.direction = 0play_moving = Trueelif key[K_DOWN]:play.direction = 4play_moving = Trueelif key[K_LEFT]:play.direction = 6play_moving = Trueelif key[K_RIGHT]:play.direction = 2play_moving = Trueelse:play_moving = Falseif not game_over:# 设置玩家play.first_frame = play.direction * play.columnsplay.last_frame = play.first_frame + play.columns - 1if play.frame < play.first_frame:play.frame = play.first_frame# 设置僵尸for z in zombie_group:z.first_frame = z.direction * z.columnsz.last_frame = z.first_frame + z.columns - 1if z.frame < z.first_frame:z.frame = z.first_frameincrement(z)if not play_moving:play.frame = play.first_frame = play.last_frameelse:increment(play)# 相撞事件attack = Noneattack = pygame.sprite.spritecollideany(play, zombie_group)if attack is not None:if pygame.sprite.collide_rect_ratio(0.5)(play, attack):play_health -= 10attack.rect.x = random.randint(0, 600)attack.rect.y = random.randint(0, 500)else:attack = Noneif pygame.sprite.collide_rect_ratio(0.5)(play, health):play_health += 30if play_health > 100:play_health = 100health.rect.x = random.randint(0, 600)health.rect.y = random.randint(0, 500)if play_health <= 0:game_over = Trueplay_group.update(ticks, 50)zombie_group.update(ticks, 50)health_group.update(ticks, 50)screen.fill((50, 50, 100))play_group.draw(screen)zombie_group.draw(screen)health_group.draw(screen)# 显示血量pygame.draw.rect(screen, (100, 200, 100, 180), Rect(300, 575, 200, 25))pygame.draw.rect(screen, (50, 150, 150, 180), Rect(300, 575, play_health * 2, 25))if game_over:print_text(font, 300, 100, "GAME OVER!!!")pygame.display.update()

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