day-21 坦克大战，完成碰撞消除5行代码

作者: RurouniKenshin | 来源:发表于2018-08-05 21:52 被阅读206次

day-21 坦克大战，完成碰撞消除5行代码
12-坦克大战3
day16 2D小游戏开发
重温儿时经典，C++全新包装坦克大战上手体验
011-坦克大战2
你敢信？清华毕业大佬用了一个坦克大战项目就讲完了23种设计模式
你敢信？清华毕业大佬用了一个坦克大战项目就讲完了23种设计模式！
Quick-lua坦克大战
阿里P8程序员，推荐学习的Java坦克大战300集和Hadoop
学习坦克大战

碰撞消除实现关键是遍历玩家坦克和敌军子弹和敌军坦克列表的坐标相交判定以及敌军坦克和玩家子弹列表的坐标相较判定
鉴于子弹和坦克都是正方形的图片，使用圆的相交判定来确定是否相交

# tank.py
class Tank:

    def __init__(self, life, speed_x, speed_y, screen):
        self.life = life
        self.speed_x = speed_x
        self.speed_y = speed_y
        self.screen = screen

    def show_tank(self, image, x, y):
        self.screen.blit(image, (x, y))

    def hit(self):
        pass

    def move(self):
        pass

    def dead(self):
        pass

# mytank.py
import tank
import pygame
import bullet


class MyTank(tank.Tank):

    hero_up = './mytank/1.gif'
    hero_down = './mytank/3.gif'
    hero_left = './mytank/4.gif'
    hero_right = './mytank/2.gif'
    bullets = []

    def __init__(self, screen, pos_x=0, pos_y=0):
        super().__init__(1, 0, 0, screen)
        self.pos_x = pos_x
        self.pos_y = pos_y

    def move(self, move_dic):
        if move_dic == 'left':
            surface = pygame.image.load(self.hero_left)
            self.speed_x = -5
            self.speed_y = 0
        elif move_dic == 'right':
            surface = pygame.image.load(self.hero_right)
            self.speed_x = 5
            self.speed_y = 0
        elif move_dic == 'up':
            surface = pygame.image.load(self.hero_up)
            self.speed_y = -5
            self.speed_x = 0
        elif move_dic == 'down':
            surface = pygame.image.load(self.hero_down)
            self.speed_y = 5
            self.speed_x = 0
        return surface, move_dic

    def stop(self, stop_dic):
        if stop_dic == 'left':
            surface = pygame.image.load(self.hero_left)
            self.speed_x = 0
            self.speed_y = 0
        elif stop_dic == 'right':
            surface = pygame.image.load(self.hero_right)
            self.speed_x = 0
            self.speed_y = 0
        elif stop_dic == 'up':
            surface = pygame.image.load(self.hero_up)
            self.speed_y = 0
            self.speed_x = 0
        elif stop_dic == 'down':
            surface = pygame.image.load(self.hero_down)
            self.speed_y = 0
            self.speed_x = 0
        return surface, stop_dic

    def change_position(self):
        self.pos_x += self.speed_x
        self.pos_y += self.speed_y

    def hit(self, dic):
        global bullet1
        tank_w, tank_h = pygame.image.load(self.hero_up).get_size()
        bullet_w, bullet_h = bullet.Bullet.surface.get_size()
        if dic == 'left':
            bullet1 = bullet.Bullet(self.pos_x - bullet_w, self.pos_y + (tank_h - bullet_h) / 2)
            bullet1.move(dic)
        elif dic == 'right':
            bullet1 = bullet.Bullet(self.pos_x + tank_w, self.pos_y + (tank_h - bullet_h) / 2)
            bullet1.move(dic)
        elif dic == 'up':
            bullet1 = bullet.Bullet(self.pos_x + (tank_w - bullet_w) / 2, self.pos_y - bullet_h)
            bullet1.move(dic)
        elif dic == 'down':
            bullet1 = bullet.Bullet(self.pos_x + (tank_w - bullet_w) / 2, self.pos_y + tank_h)
            bullet1.move(dic)
        self.bullets.append(bullet1)

    def bullet_change(self):
        for b in self.bullets:
            b.pos_x += b.speed_x
            b.pos_y += b.speed_y

    def bullet_show(self):
        for b in self.bullets:
            self.screen.blit(bullet.Bullet.surface, (b.pos_x, b.pos_y))

    def bullet_dead(self):
        for b in self.bullets[:]:
            if b.pos_x <= 0 or b.pos_x >= 60*20:
                self.bullets.remove(b)
            if b.pos_y <= 0 or b.pos_y >= 60*14:
                self.bullets.remove(b)
# enemy
import pygame
import tank
from random import randint
import bullet


class Enemy(tank.Tank):

    def __init__(self, life, surface, speed_x=0, speed_y=0, screen=0, pos_x=0, pos_y=0, enemy_bullet=[]):
        self.life = life
        self.speed_x = speed_x
        self.speed_y = speed_y
        self.screen = screen
        self.pos_x = pos_x
        self.pos_y = pos_y
        self.type_e = randint(1,3)
        self.enemy_bullet = enemy_bullet
        self.surface = surface

    def move(self):
        r_dic = randint(-50, 50)
        if r_dic == 1:
            surface = pygame.image.load('./enemy/enemy'+str(self.type_e)+'/u.gif')
            self.speed_y = self.type_e * (-1)
            self.speed_x = 0
            self.hit(r_dic)
            self.surface = surface
        elif r_dic == 2:
            surface = pygame.image.load('./enemy/enemy'+str(self.type_e)+'/d.gif')
            self.speed_y = self.type_e * 1
            self.speed_x = 0
            self.hit(r_dic)
            self.surface = surface
        elif r_dic == 3:
            surface = pygame.image.load('./enemy/enemy'+str(self.type_e)+'/l.gif')
            self.speed_x = self.type_e * (-1)
            self.speed_y = 0
            self.hit(r_dic)
            self.surface = surface
        elif r_dic == 4:
            surface = pygame.image.load('./enemy/enemy'+str(self.type_e)+'/r.gif')
            self.speed_x = self.type_e * 1
            self.speed_y = 0
            self.hit(r_dic)
            self.surface = surface

    def hit(self, r_dic):
        tank_w, tank_h = pygame.image.load('./enemy/enemy'+str(self.type_e)+'/u.gif').get_size()
        bullet_w, bullet_h = bullet.Bullet.surface.get_size()
        if r_dic == 3:
            bullet1 = bullet.Bullet(self.pos_x - bullet_w, self.pos_y + (tank_h - bullet_h) / 2)
            bullet1.move('left')
            self.enemy_bullet.append(bullet1)
        elif r_dic == 4:
            bullet1 = bullet.Bullet(self.pos_x + tank_w, self.pos_y + (tank_h - bullet_h) / 2)
            bullet1.move('right')
            self.enemy_bullet.append(bullet1)
        elif r_dic == 1:
            bullet1 = bullet.Bullet(self.pos_x + (tank_w - bullet_w) / 2, self.pos_y - bullet_h)
            bullet1.move('up')
            self.enemy_bullet.append(bullet1)
        elif r_dic == 2:
            bullet1 = bullet.Bullet(self.pos_x + (tank_w - bullet_w) / 2, self.pos_y + tank_h)
            bullet1.move('down')
            self.enemy_bullet.append(bullet1)

    def bullet_change(self):
        for b in self.enemy_bullet:
            b.pos_x += b.speed_x
            b.pos_y += b.speed_y

    def bullet_show(self):
        for b in self.enemy_bullet:
            self.screen.blit(bullet.Bullet.surface, (b.pos_x, b.pos_y))

    def bullet_dead(self):
        for b in self.enemy_bullet:
            if b.pos_x <= 0 or b.pos_x >= 60*20:
                self.enemy_bullet.remove(b)
            if b.pos_y <= 0 or b.pos_y >= 60*14:
                self.enemy_bullet.remove(b)

    def change_position(self):
        self.pos_x += self.speed_x
        self.pos_y += self.speed_y
# bullet.py
class Bullet:

    surface = pygame.image.load('./bullet/10.gif')
    speed_x = 0
    speed_y = 0

    def __init__(self, pos_x, pos_y):
        self.pos_x = pos_x
        self.pos_y = pos_y

    def move(self, move_dic):
        if move_dic == 'left':
            self.speed_x = -8
        elif move_dic == 'right':
            self.speed_x = 8
        elif move_dic == 'up':
            self.speed_y = -8
        elif move_dic == 'down':
            self.speed_y = 8
# main.py
"""new python"""
import pygame
import mytank
from enemy import Enemy
from random import randint


if __name__ == '__main__':
    pygame.init()
    width = 60 * 20
    height = 60 * 14
    screen = pygame.display.set_mode((width, height))
    bullet_wid, bullet_hig = bullet.Bullet.surface.get_size()
    pos_x = 660
    pos_y = 780
    hero = mytank.MyTank(screen, pos_x, pos_y)
    surface = pygame.image.load(mytank.MyTank.hero_up)
    dic = ''
    surface_e = pygame.image.load('./enemy/enemy1/u.gif')
    enemy_wid, enemy_hig = surface_e.get_size()
    enemys = []
    while True:
        rr = randint(1, 3)
        while len(enemys) < 6:
            enemy = Enemy(randint(1, 6), surface_e, 0, 0, screen, randint(100, 1000), randint(100, 500), [])
            enemys.append(enemy)
        screen.fill((0, 0, 0))
        hero.bullet_dead()
        hero.show_tank(surface, hero.pos_x, hero.pos_y)
        hero.bullet_show()
        for enemy in enemys:
            if (enemy.pos_x >= 60 * 19 and enemy.speed_x > 0) or (enemy.pos_x <= 0 and enemy.speed_x < 0):
                enemy.speed_x = 0 - enemy.speed_x
            if (enemy.pos_y >= 60 * 13 and enemy.speed_y > 0) or (enemy.pos_y <= 0 and enemy.speed_y < 0):
                enemy.speed_y = 0 - enemy.speed_y
            enemy.change_position()
            enemy.bullet_change()
            enemy.bullet_dead()
            enemy.show_tank(enemy.surface, enemy.pos_x, enemy.pos_y)
            enemy.bullet_show()
            enemy.move()
        pygame.display.flip()
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                exit()
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_RIGHT:
                    surface, dic = hero.move('right')
                elif event.key == pygame.K_LEFT:
                    surface, dic = hero.move('left')
                elif event.key == pygame.K_UP:
                    surface, dic = hero.move('up')
                elif event.key == pygame.K_DOWN:
                    surface, dic = hero.move('down')
                if event.key == pygame.K_SPACE:
                    hero.hit(dic)
            elif event.type == pygame.KEYUP:
                if event.key == pygame.K_RIGHT:
                    surface, dic = hero.stop('right')
                elif event.key == pygame.K_LEFT:
                    surface, dic = hero.stop('left')
                elif event.key == pygame.K_UP:
                    surface, dic = hero.stop('up')
                elif event.key == pygame.K_DOWN:
                    surface, dic = hero.stop('down')
        if (hero.pos_x >= 60*19 and hero.speed_x > 0) or (hero.pos_x <= 0 and hero.speed_x < 0):
            hero.speed_x = 0
        if (hero.pos_y >= 60*13 and hero.speed_y > 0) or (hero.pos_y <= 0 and hero.speed_y < 0):
            hero.speed_y = 0
        hero.change_position()
        hero.bullet_change()
        pygame.time.delay(10)

碰撞消除在各个类的dead方法中实现

        for e in enemys:
            for my_bullet in mytank.MyTank.bullets:
                if math.sqrt((e.pos_x+enemy_wid/2-my_bullet.pos_x-bullet_wid/2)**2+(e.pos_y+enemy_hig/2-my_bullet.pos_y-bullet_hig/2)**2) < (enemy_wid/2+bullet_wid/2):
                    enemys.remove(e)
                    mytank.MyTank.bullets.remove(my_bullet)

放在main.py中 pygame.time.delay(10)前即可完成敌军和我方子弹的碰撞消除，自己和敌方子弹的碰撞消除同理即可，想了一下还是给个运行图吧（随机类型敌军坦克，并且少于6个，自动生成到6个）

image.png

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