Python develops Plants vs. Zombies game

Author: Kaikai Link: https://segmentfault.com/a/1190000019418065

development ideas

Full project address:

https://github.com/371854496/pygame

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1. Import the required modules, configure the image path, set the width, height and background color of the interface, and create the main entrance of the game.

#1引入需要的模块
import pygame
import random
#1配置图片地址
IMAGE_PATH = 'imgs/'
#1设置页面宽高
scrrr_width=800
scrrr_height =560
#1创建控制游戏结束的状态
GAMEOVER = False
#1主程序
class MainGame():
     #1加载游戏窗口
    def init_window(self):
        #1调用显示模块的初始化
        pygame.display.init()
        #1创建窗口
        MainGame.window = pygame.display.set_mode([scrrr_width,scrrr_height])  #
    #1开始游戏
    def start_game(self):
        #1初始化窗口
        self.init_window()
        #1只要游戏没结束，就一直循环
        while not GAMEOVER:
            #1渲染白色背景
            MainGame.window.fill((255, 255, 255))
            #1实时更新
            pygame.display.update()
#1启动主程序
if __name__ == '__main__':
    game = MainGame()
    game.start_game()

2. Text drawing, creating properties to change dynamically, rendering position

#2 创建关数，得分，剩余分数，钱数
shaoguan = 1
score = 0
remnant_score = 100
money = 200
#2 文本绘制
def draw_text(self, content, size, color):
    pygame.font.init()
    font = pygame.font.SysFont('kaiti', size)
    text = font.render(content, True, color)
    return text

#2 加载帮助提示
def load_help_text(self):
    text1 = self.draw_text('1.按左键创建向日葵 2.按右键创建豌豆射手', 26, (255, 0, 0))
    MainGame.window.blit(text1, (5, 5))

#2 渲染的文字和坐标位置
        MainGame.window.blit(self.draw_text('当前钱数$: {}'.format(MainGame.money), 26, (255, 0, 0)), (500, 40))
        MainGame.window.blit(self.draw_text(
            '当前关数{}，得分{},距离下关还差{}分'.format(MainGame.shaoguan, MainGame.score, MainGame.remnant_score), 26,
            (255, 0, 0)), (5, 40))
        self.load_help_text()

3. Create a map class, initialize the map and coordinates

#3 创建地图类
class Map():
    #3 存储两张不同颜色的图片名称
    map_names_list = [IMAGE_PATH + 'map1.png', IMAGE_PATH + 'map2.png']
    #3 初始化地图
    def __init__(self, x, y, img_index):
        self.image = pygame.image.load(Map.map_names_list[img_index])
        self.position = (x, y)
        # 是否能够种植
        self.can_grow = True
    #3 加载地图
    def load_map(self):
         MainGame.window.blit(self.image,self.position)

    #3 存储所有地图坐标点
    map_points_list = []
    #3 存储所有的地图块
    map_list = []

    #3 初始化坐标点
    def init_plant_points(self):
        for y in range(1, 7):
            points = []
            for x in range(10):
                point = (x, y)
                points.append(point)
            MainGame.map_points_list.append(points)
            print("MainGame.map_points_list", MainGame.map_points_list)

    #3 初始化地图
    def init_map(self):
        for points in MainGame.map_points_list:
            temp_map_list = list()
            for point in points:
                # map = None
                if (point[0] + point[1]) % 2 == 0:
                    map = Map(point[0] * 80, point[1] * 80, 0)
                else:
                    map = Map(point[0] * 80, point[1] * 80, 1)
                # 将地图块加入到窗口中
                temp_map_list.append(map)
                print("temp_map_list", temp_map_list)
            MainGame.map_list.append(temp_map_list)
        print("MainGame.map_list", MainGame.map_list)

    #3 将地图加载到窗口中
    def load_map(self):
        for temp_map_list in MainGame.map_list:
            for map in temp_map_list:
                map.load_map()

    #3 初始化坐标和地图
    self.init_plant_points()
    self.init_map()

    #3 需要反复加载地图
    self.load_map()

4. Create plant class, image loading error processing, load plant method

#4 图片加载报错处理
LOG = '文件:{}中的方法:{}出错'.format(__file__,__name__)
#4 植物类
class Plant(pygame.sprite.Sprite):
    def __init__(self):
        super(Plant, self).__init__()
        self.live=True

    # 加载图片
    def load_image(self):
        if hasattr(self, 'image') and hasattr(self, 'rect'):
            MainGame.window.blit(self.image, self.rect)
        else:
            print(LOG)

#4 存储所有植物的列表
plants_list = []

5. Create the Sunflower Class

#5 向日葵类
class Sunflower(Plant):
    def __init__(self,x,y):
        super(Sunflower, self).__init__()
        self.image = pygame.image.load('imgs/sunflower.png')
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y
        self.price = 50
        self.hp = 100
        #5 时间计数器
        self.time_count = 0

    #5 功能：生成阳光（生产钱）
    def produce_money(self):
        self.time_count += 1
        if self.time_count == 25:
            MainGame.money += 5
            self.time_count = 0
    #5 向日葵加入到窗口中
    def display_sunflower(self):
        MainGame.window.blit(self.image,self.rect)

6. Create the pea shooter class

    #6 豌豆射手类
class PeaShooter(Plant):
    def __init__(self,x,y):
        super(PeaShooter, self).__init__()
        # self.image 为一个 surface
        self.image = pygame.image.load('imgs/peashooter.png')
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y
        self.price = 50
        self.hp = 200
        #6 发射计数器
        self.shot_count = 0

    #6 增加射击方法
    def shot(self):
        #6 记录是否应该射击
        should_fire = False
        for zombie in MainGame.zombie_list:
            if zombie.rect.y == self.rect.y and zombie.rect.x < 800 and zombie.rect.x > self.rect.x:
                should_fire = True
        #6 如果活着
        if self.live and should_fire:
            self.shot_count += 1
            # 计数器到25发射一次
            if self.shot_count == 25:
                #6 基于当前豌豆射手的位置，创建子弹
                peabullet = PeaBullet(self)
                #6 将子弹存储到子弹列表中
                MainGame.peabullet_list.append(peabullet)
                self.shot_count = 0

    #6 将豌豆射手加入到窗口中的方法
    def display_peashooter(self):
        MainGame.window.blit(self.image,self.rect)

    #6 增加豌豆射手发射处理
    def load_plants(self):
        for plant in MainGame.plants_list:
            #6 优化加载植物的处理逻辑
            if plant.live:
                if isinstance(plant, Sunflower):
                    plant.display_sunflower()
                    plant.produce_money()
                elif isinstance(plant, PeaShooter):
                    plant.display_peashooter()
                    plant.shot()
            else:
                MainGame.plants_list.remove(plant)
     #6 调用加载植物的方法
     self.load_plants()

7. Create bullet class

#7 豌豆子弹类
class PeaBullet(pygame.sprite.Sprite):
    def __init__(self,peashooter):
        self.live = True
        self.image = pygame.image.load('imgs/peabullet.png')
        self.damage = 50
        self.speed  = 10
        self.rect = self.image.get_rect()
        self.rect.x = peashooter.rect.x + 60
        self.rect.y = peashooter.rect.y + 15

    def move_bullet(self):
        #7 在屏幕范围内，实现往右移动
        if self.rect.x < scrrr_width:
            self.rect.x += self.speed
        else:
            self.live = False

    #7 新增，子弹与僵尸的碰撞
    def hit_zombie(self):
        for zombie in MainGame.zombie_list:
            if pygame.sprite.collide_rect(self,zombie):
                #打中僵尸之后，修改子弹的状态，
                self.live = False
                #僵尸掉血
                zombie.hp -= self.damage
                if zombie.hp <= 0:
                    zombie.live = False
                    self.nextLevel()
    #7闯关方法
    def nextLevel(self):
        MainGame.score += 20
        MainGame.remnant_score -=20
        for i in range(1,100):
            if MainGame.score==100*i and MainGame.remnant_score==0:
                    MainGame.remnant_score=100*i
                    MainGame.shaoguan+=1
                    MainGame.produce_zombie+=50

    def display_peabullet(self):
        MainGame.window.blit(self.image,self.rect)

    #7 存储所有豌豆子弹的列表
    peabullet_list = []

    #7 加载所有子弹的方法
def load_peabullets(self):
    for b in MainGame.peabullet_list:
        if b.live:
            b.display_peabullet()
            b.move_bullet()
            #7  调用子弹是否打中僵尸的方法
            b.hit_zombie()
        else:
            MainGame.peabullet_list.remove(b)
    #7 调用加载所有子弹的方法
    self.load_peabullets()

8. event handling

#8事件处理

def deal_events(self):
    #8 获取所有事件
    eventList = pygame.event.get()
    #8 遍历事件列表，判断
    for e in eventList:
        if e.type == pygame.QUIT:
            self.gameOver()
        elif e.type == pygame.MOUSEBUTTONDOWN:
            # print('按下鼠标按键')
            print(e.pos)
            # print(e.button)#左键1  按下滚轮2 上转滚轮为4 下转滚轮为5  右键 3

            x = e.pos[0] // 80
            y = e.pos[1] // 80
            print(x, y)
            map = MainGame.map_list[y - 1][x]
            print(map.position)
            #8 增加创建时候的地图装填判断以及金钱判断
            if e.button == 1:
                if map.can_grow and MainGame.money >= 50:
                    sunflower = Sunflower(map.position[0], map.position[1])
                    MainGame.plants_list.append(sunflower)
                    print('当前植物列表长度:{}'.format(len(MainGame.plants_list)))
                    map.can_grow = False
                    MainGame.money -= 50
            elif e.button == 3:
                if map.can_grow and MainGame.money >= 50:
                    peashooter = PeaShooter(map.position[0], map.position[1])
                    MainGame.plants_list.append(peashooter)
                    print('当前植物列表长度:{}'.format(len(MainGame.plants_list)))
                    map.can_grow = False
                    MainGame.money -= 50

                    #8 调用事件处理的方法
                    self.deal_events()

9. Create a zombie class

#9 僵尸类
class Zombie(pygame.sprite.Sprite):
    def __init__(self,x,y):
        super(Zombie, self).__init__()
        self.image = pygame.image.load('imgs/zombie.png')
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y
        self.hp = 1000
        self.damage = 2
        self.speed = 1
        self.live = True
        self.stop = False
    #9 僵尸的移动
    def move_zombie(self):
        if self.live and not self.stop:
            self.rect.x -= self.speed
            if self.rect.x < -80:
                #8 调用游戏结束方法
                MainGame().gameOver()

    #9 判断僵尸是否碰撞到植物，如果碰撞，调用攻击植物的方法
    def hit_plant(self):
        for plant in MainGame.plants_list:
            if pygame.sprite.collide_rect(self,plant):
                #8  僵尸移动状态的修改
                self.stop = True
                self.eat_plant(plant)
    #9 僵尸攻击植物
    def eat_plant(self,plant):
        #9 植物生命值减少
        plant.hp -= self.damage
        #9 植物死亡后的状态修改，以及地图状态的修改
        if plant.hp <= 0:
            a = plant.rect.y // 80 - 1
            b = plant.rect.x // 80
            map = MainGame.map_list[a][b]
            map.can_grow = True
            plant.live = False
            #8 修改僵尸的移动状态
            self.stop = False

    #9 将僵尸加载到地图中
    def display_zombie(self):
        MainGame.window.blit(self.image,self.rect)

    #9 新增存储所有僵尸的列表
    zombie_list = []
    count_zombie = 0
    produce_zombie = 100     

    #9 新增初始化僵尸的方法
    def init_zombies(self):
        for i in range(1, 7):
            dis = random.randint(1, 5) * 200
            zombie = Zombie(800 + dis, i * 80)
            MainGame.zombie_list.append(zombie)

    #9将所有僵尸加载到地图中
    def load_zombies(self):
        for zombie in MainGame.zombie_list:
            if zombie.live:
                zombie.display_zombie()
                zombie.move_zombie()
                # v2.0 调用是否碰撞到植物的方法
                zombie.hit_plant()
            else:
                MainGame.zombie_list.remove(zombie)

    #9 调用初始化僵尸的方法
        self.init_zombies()

    #9 调用展示僵尸的方法
            self.load_zombies()
            #9 计数器增长，每数到100，调用初始化僵尸的方法
            MainGame.count_zombie += 1
            if MainGame.count_zombie == MainGame.produce_zombie:
                self.init_zombies()
                MainGame.count_zombie = 0
            #9 pygame自己的休眠
            pygame.time.wait(10)

10. Game over method

#10 程序结束方法
def gameOver(self):
    MainGame.window.blit(self.draw_text('游戏结束', 50, (255, 0, 0)), (300, 200))
    pygame.time.wait(400)
    global GAMEOVER
    GAMEOVER = True

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