pygame制作飞机大战（敌机出现、碰撞检测、增加声音、分数记录）

1、歼灭敌机

（1）增加敌机：设置敌机，随机从窗口顶部出现，往底部移动，随机从窗口顶部出现只需要设置初始纵坐标为顶部的一个固定值：

#敌机初始化
k = 0
enemy_x1 = 0
enemy_y1 = 0

（2）敌机移动

• 敌机随机出现
• 设定敌机速度

敌机随机出现，可以将初始位置设定在y = -24的位置(稍高于窗口顶部y = 0位置)

设定敌机速度，要确定速度就要设定时间t和路程s，时间设定为每执行一次程序t0，时间参数k，设定每执行一次程序移动的像素为5，根据实际效果调整参数，飞机从上到下运行总时间为(1000 + 90)/10 = 109*t0，总路程s = (109*t0)*5:

 #随机出现敌人
    #敌人1
    if k == 0:
        enemy_x1 = random.randint(-24, 426)
        enemy_y1 = -24
    elif k == 90:
        k = -1000
    k += 10
    enemy_y1 += 5

同理，可以再增加一个敌机，但是飞机初始出现的位置需要和前一个区别：

 #敌人2
    if l == 80:
        enemy_x2 = random.randint(-24, 426)
        enemy_y2 = -24
    elif l == 170:
        l = -1170
    l += 10
    enemy_y2 += 5

2、碰撞检测

只要检测到子弹“左边缘”横坐标在敌机“左边缘”和“右边缘”之间且子弹“顶部”纵坐标在敌机“底部坐标之上”，或者子弹“右边缘”横坐标在敌机“左边缘”和“右边缘”之间且子弹“顶部”纵坐标在敌机“底部坐标之上”，则判定子弹会和敌机发生碰撞：（由于设定的子弹速度很快，暂时没有判断子弹“顶部”纵坐标在敌机“底部坐标之上”）

#检测碰撞
def collide(button_x1, enemy_x1, enemy_y1, score_count):        # x1子弹中心横坐标，X2敌机中心横坐标
    collide_x1 = enemy_x1
    collide_y1 = enemy_y1
    if ((enemy_x1 - 15) <= (button_x1 - 4) <= (enemy_x1 + 15)) or ((enemy_x1 - 15) <= (button_x1 + 4) <= (enemy_x1 + 15)):
        collide_x1 = random.randint(-24, 426)
        collide_y1 = -65
        score_count +=1
    print(score_count)
    return collide_x1, collide_y1, score_count

3、增加声音

初始化及加载：

#音乐初始化及加载
pygame.mixer.init()
pygame.mixer_music.load('button.wav')

显示子弹声音：

 #显示子弹声音
    pygame.mixer_music.play()

4、计算分数

计算分数比较简单，这里只选择了三位数，即最大为999，但是提前需要准备好1-9的数字图片:

 #计算并显示分数
    units = score_count//1%10
    tens = score_count//10%10
    hundreds = score_count//100%10

    units_picture = score_picture_list[units]
    tens_picture = score_picture_list[tens]
    hundreds_picture = score_picture_list[hundreds]

5、完整代码

#参数初始化
background_image_filename = 'background.png'
mouse_image_filename = 'airplane.png'
button_image_filename = 'button1.png'
enemy1_image_filename = 'enemy.png'
enemy2_image_filename = 'enemy.png'
score_board = 'score_board.png'
number_0 = 'zero.png'
number_1 = 'one.png'
number_2 = 'two.png'
number_3 = 'three.png'
number_4 = 'four.png'
number_5 = 'five.png'
number_6 = 'six.png'
number_7 = 'seven.png'
number_8 = 'eight.png'
number_9 = 'nine.png'

#导入函数
import pygame
from pygame.locals import *
from sys import exit
import random

#音乐初始化及加载
pygame.mixer.init()
pygame.mixer_music.load('button.wav')

#加载并转换图像
background = pygame.image.load(background_image_filename)
mouse_cursor = pygame.image.load(mouse_image_filename)
button_picture1 = pygame.image.load(button_image_filename)
button_picture2 = pygame.image.load(button_image_filename)
enemy_picture1 = pygame.image.load(enemy1_image_filename)
enemy_picture2 = pygame.image.load(enemy2_image_filename)
score_board_picture = pygame.image.load(score_board)
score_zero_picture = pygame.image.load(number_0)
score_one_picture = pygame.image.load(number_1)
score_two_picture = pygame.image.load(number_2)
score_three_picture = pygame.image.load(number_3)
score_four_picture = pygame.image.load(number_4)
score_five_picture = pygame.image.load(number_5)
score_six_picture = pygame.image.load(number_6)
score_seven_picture = pygame.image.load(number_7)
score_eight_picture = pygame.image.load(number_8)
score_nine_picture = pygame.image.load(number_9)
score_picture_list = [score_zero_picture, score_one_picture, score_two_picture, score_three_picture, score_four_picture,
                      score_five_picture, score_six_picture, score_seven_picture, score_eight_picture, score_nine_picture]

#创建窗口及标题
screen = pygame.display.set_mode((450, 550), 0, 32)
pygame.display.set_caption("hello world")

#初始化pygame，为硬件使用作准备
pygame.init()

x1 = 225
y1 = 275
#子弹坐标初始化
button_x1 = 0
button_y1 = 0
button_x2 = 0
button_y2 = 0
v = 4
i = 0
j = 0
#敌机初始化
k = 0
enemy_x1 = 0
enemy_y1 = 0
#分数初始化
score_count = 0
board_x = 280
board_y = 20
number_x = list(range(10))

l = 0
enemy_x2 = 0
enemy_y2 = 0
units_x1 = 60
units_y1 = 0
tens_x1 = 30
tens_y1 = 0
hundreds_x1 = 0
hundreds_y1 = 0

# 检测边缘
def judge(potx, poty):
    if potx >= 426:
        potx = 426
    elif potx <= -24:
        potx = -24
    elif poty >= 526:
        poty = 526
    elif poty <= -24:
        poty = -24
    return potx, poty

#检测碰撞
def collide(button_x1, enemy_x1, enemy_y1, score_count):        # x1子弹中心横坐标，X2敌机中心横坐标
    collide_x1 = enemy_x1
    collide_y1 = enemy_y1
    if ((enemy_x1 - 15) <= (button_x1 - 4) <= (enemy_x1 + 15)) or ((enemy_x1 - 15) <= (button_x1 + 4) <= (enemy_x1 + 15)):
        collide_x1 = random.randint(-24, 426)
        collide_y1 = -65
        score_count +=1
    print(score_count)
    return collide_x1, collide_y1, score_count

#游戏主循环
while True:
    # 检测退出事件，判断是否执行退出
    for event in pygame.event.get():
        if event.type == QUIT:
            exit()

    #将背景画上去
    screen.blit(background, (0, 0))

    #获取按键状态并完成移动
    press = pygame.key.get_pressed()

    if press[K_LEFT] == True:
        if press[K_UP] == True:
            x1 = x1 - v
            y1 = y1 - v
        elif press[K_DOWN] == True:
            x1 = x1 - v
            y1 = y1 + v
        else:
            x1 = x1 - v
    elif press[K_RIGHT] == True:
        if press[K_UP] == True:
            x1 = x1 + v
            y1 = y1 - v
        elif press[K_DOWN] == True:
            x1 = x1 + v
            y1 = y1 + v
        else:
            x1 = x1 + v
    elif press[K_UP] == True:
        y1 = y1 - v
    elif press[K_DOWN] == True:
        y1 = y1 + 4
    # 获取鼠标位置
    #x, y = pygame.mouse.get_pos()
    #计算光标在左上角的位置
    #x -= mouse_cursor.get_width() / 2
    #y -= mouse_cursor.get_height() / 2

    #子弹移动
    #子弹1移动
    if i == 0:
        button_x1 = x1 + 3
        button_y1 = y1 + 60
    elif i == 90:
        i = -10
    i += 10
    button_y1 -= 65
    #子弹2移动
    if j == 0:
        button_x2 = x1 + 27
        button_y2 = y1 + 60
    elif j == 90:
        j = -10
    j += 10
    button_y2 -= 65

    #判断边缘
    x1, y1 = judge(potx = x1, poty = y1)

    #随机出现敌人
    #敌人1
    if k == 0:
        enemy_x1 = random.randint(-24, 426)
        enemy_y1 = -24
    elif k == 90:
        k = -1000
    k += 10
    enemy_y1 += 5

    #敌人2
    if l == 80:
        enemy_x2 = random.randint(-24, 426)
        enemy_y2 = -24
    elif l == 170:
        l = -1170
    l += 10
    enemy_y2 += 5

    #子弹击中
    enemy_x1, enemy_y1, score_count = collide(button_x1, enemy_x1, enemy_y1, score_count)
    enemy_x2, enemy_y2, score_count = collide(button_x2, enemy_x2, enemy_y2,score_count)

    #显示子弹声音
    pygame.mixer_music.play()

    #计算并显示分数
    units = score_count//1%10
    tens = score_count//10%10
    hundreds = score_count//100%10

    units_picture = score_picture_list[units]
    tens_picture = score_picture_list[tens]
    hundreds_picture = score_picture_list[hundreds]

    #将光标画上去
    screen.blit(mouse_cursor, (x1, y1))
    screen.blit(button_picture1, (button_x1, button_y1))
    screen.blit(button_picture2, (button_x2, button_y2))

    screen.blit(enemy_picture1, (enemy_x1, enemy_y1))
    screen.blit(enemy_picture2, (enemy_x2, enemy_y2))

    screen.blit(units_picture, (units_x1, units_y1))
    screen.blit(tens_picture, (tens_x1, tens_y1))
    screen.blit(hundreds_picture, (hundreds_x1, hundreds_y1))


    # 在新的位置上画图
    pygame.display.update() 

PS：可以看出，这样的写法代码量很大，下一步会基于“面向对象”和“程序提炼”来优化一遍上述的程序。

本文地址：https://blog.csdn.net/F_MILK_/article/details/109030183