Python代码实现Flippy Bird

(24) 2024-02-11 09:01:01

140行代码实现Flippy Bird
话说这游戏中文名叫什么来着,死活想不起来了,算了话不多说,140行实现小游戏系列第二章,依然是简单小游戏,与数独游戏相比,在游戏界面显示上更难一些,但是在逻辑方面更简单一些,需要处理的无非是速度、加速度、时间、位置、碰撞检测,界面方面则要实现整个动态的显示;

依旧在最后会给出全部代码,不过依然可以从我的 Github仓库 Fork下来直接运行,图片资源也在那里,have fun.

运行以及玩法:

python main.py运行游戏;
鼠标点击是暂停,再点击则是继续;
空格键进行跳跃;
后续扩展:

管道的出现可以更加随机,包括位置和长度等,目前是很简单的方式出现;
游戏速度可以越来越快,目前是固定的;
小鸟的自由落体速度、跳跃速度等需要优化,目前操作感觉没有那么流畅;
增加计分系统、开始、重来等按钮;
小鸟图,需要的自取
游戏截图
进行中
Python代码实现Flippy Bird (https://mushiming.com/)  第1张
暂停时
Python代码实现Flippy Bird (https://mushiming.com/)  第2张
死亡时
Python代码实现Flippy Bird (https://mushiming.com/)  第3张
关键代码分析
随时间移动的管道
可以看到对于这个游戏,实际上移动的是管道而不是小鸟,因此这里主要是处理管道绘制的位置变化,以及整个一个循环的过程,如果屏幕上显示的管道是N个,那么可以想象是N+2个管道在不停地转圈圈出现在我们的界面上就行了;

tunnel_list = [x-speed if x-speed>-200 else 2100 for x in tunnel_list ]

def draw_tunnel():
for x in tunnel_list:
    pygame.draw.rect(screen,COLORS['darkgreen'],(x,0,100,350),0)
    pygame.draw.rect(screen,COLORS['darkgreen'],(x+100,550,100,350),0)

自由落体的小鸟和点击空格后跳起
不操作的情况下,小鸟的上下移动是做自由落体,也就是越来越快的下降的过程,而当我们点击 空格 进行跳跃后,实际上改变的就是小鸟的当前速度,因此小鸟会向上越来越慢的跳跃,直到速度为0后,继续下降,符合基本的物理规则;

G = 9.8*30 # g
JUMP_V = -300
bird_x,bird_y = 700,450
bird_v = 0

if not jump:
    bird_v += G*frame
else:
bird_v = JUMP_V
jump = False
bird_y += frame*bird_v

def draw_bird():
screen.blit(birdImg,[bird_x,bird_y])

碰撞检测
检测小鸟是否碰到管道或者是掉到地上,这么说是只无脚鸟咯,实际上就是检测两个矩形是否有重叠的部分;

def rect_cover(rect1,rect2,up=True):
# bird
left_up1 = (rect1[0],rect1[1])
left_down1 = (rect1[0],left_up1[1]+rect1[3])
right_up1 = (left_up1[0]+rect1[2],rect1[1])
right_down1 = (left_up1[0]+rect1[2],left_up1[1]+rect1[3])
# tunnel
left_up2 = (rect2[0],rect2[1])
left_down2 = (rect2[0],left_up2[1]+rect2[3])
right_up2 = (left_up2[0]+rect2[2],rect2[1])
right_down2 = (left_up2[0]+rect2[2],left_up2[1]+rect2[3])
# check
if (left_up2[0]<=right_up1[0]<=right_up2[0]): # x,肯定是右侧线接触,因此判断bird的right即可
    if up and (left_up2[1]<=right_up1[1]<=left_down2[1]):
        return True
    elif (not up) and (left_up2[1]<=right_down1[1]<=left_down2[1]):
        return True
return False

pygame绘制rect不支持透明度下实现的透明图层
看到,实际上是借助了Surface,将其设置为想要的透明度后blit到我们的screen上即可,直接draw rect是不支持RGBA的A设置alpha的,不知道为啥这么坑爹的设计;

def draw_dead():
s = pygame.Surface(SIZE, pygame.SRCALPHA)
s.fill((255,255,255,240))
screen.blit(s, (0,0))
txt = font120.render('YOU DEAD',True,COLORS['black'])
x,y = 450,400
screen.blit(txt,(x,y))

全部代码

import sys

import pygame
from pygame.color import THECOLORS as COLORS

def draw_background():
# white background
screen.fill(COLORS['lightblue'])
pygame.draw.rect(screen,COLORS['black'],(-100,902,3000,200),5)

def draw_tunnel():
for x in tunnel_list:
    pygame.draw.rect(screen,COLORS['darkgreen'],(x,0,100,350),0)
    pygame.draw.rect(screen,COLORS['darkgreen'],(x+100,550,100,350),0)

def draw_bird():
screen.blit(birdImg,[bird_x,bird_y])

def draw_context():
txt = font50.render('Count time: '+str(int(count_time))+' S',True,COLORS['black'])
x,y = 10,920
screen.blit(txt,(x,y))

def draw_pause():
s = pygame.Surface(SIZE, pygame.SRCALPHA)
s.fill((255,255,255,220))
screen.blit(s, (0,0))
txt = font120.render('PAUSE',True,COLORS['darkgray'])
x,y = 550,400
screen.blit(txt,(x,y))

def draw_dead():
s = pygame.Surface(SIZE, pygame.SRCALPHA)
s.fill((255,255,255,240))
screen.blit(s, (0,0))
txt = font120.render('YOU DEAD',True,COLORS['black'])
x,y = 450,400
screen.blit(txt,(x,y))

def rect_cover(rect1,rect2,up=True):
# bird
left_up1 = (rect1[0],rect1[1])
left_down1 = (rect1[0],left_up1[1]+rect1[3])
right_up1 = (left_up1[0]+rect1[2],rect1[1])
right_down1 = (left_up1[0]+rect1[2],left_up1[1]+rect1[3])
# tunnel
left_up2 = (rect2[0],rect2[1])
left_down2 = (rect2[0],left_up2[1]+rect2[3])
right_up2 = (left_up2[0]+rect2[2],rect2[1])
right_down2 = (left_up2[0]+rect2[2],left_up2[1]+rect2[3])
# check
if (left_up2[0]<=right_up1[0]<=right_up2[0]): # x,肯定是右侧线接触,因此判断bird的right即可
    if up and (left_up2[1]<=right_up1[1]<=left_down2[1]):
        return True
    elif (not up) and (left_up2[1]<=right_down1[1]<=left_down2[1]):
        return True
return False


def check_dead():
bird_rect = (bird_x,bird_y,70,70)
if bird_rect[1]+bird_rect[3]>900:
    return True
for x in tunnel_list:
    up_rect = (x,0,100,350)
    down_rect = (x+100,550,100,350)
    if rect_cover(bird_rect,up_rect) or rect_cover(bird_rect,down_rect,up=False):
        return True
return False

if __name__ == "__main__":
# init pygame
pygame.init()

# contant
SIZE = [1500,1000]
font50 = pygame.font.SysFont('Times', 50)
font120 = pygame.font.SysFont('Times', 120)
G = 9.8*30 # g
JUMP_V = -300

# brid
birdPath = 'bird.png'
birdImg = pygame.image.load(birdPath)

# tunnel
tunnel_list = [100,600,1100,1600,2100]

# create screen 500*500
screen = pygame.display.set_mode(SIZE)

# variable parameter
bird_x,bird_y = 700,450
bird_v = 0
count_time = 0

# level
speed = 5
frame = 0.02

# main loop
running = True
pause = False
jump = False
dead = False
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
            break
        elif event.type == pygame.MOUSEBUTTONDOWN:
            pause = not pause
        elif event.type == pygame.KEYUP:
            if chr(event.key) == ' ':
                jump = True

    # update data
    if not pause and not dead:
        count_time += frame
        tunnel_list = [x-speed if x-speed>-200 else 2100 for x in tunnel_list ]

        if not jump:
            bird_v += G*frame
        else:
            bird_v = JUMP_V
            jump = False
        bird_y += frame*bird_v

    # background
    draw_background()
    # tunnel
    draw_tunnel()
    # choose item
    draw_bird()
    # point
    draw_context()
    # pause
    if not dead and pause:
        draw_pause()
    # dead
    if dead:
        draw_dead()
    # flip
    pygame.display.flip()

    # pause 20ms
    pygame.time.delay(int(frame*1000))

    # check win or not
    if check_dead():
        #print('You dead, dumb ass!!!')
        #break
        dead = True

pygame.quit()

最后
数独和FlippyBird都在 这里 ,欢迎大家Fork下来直接运行,后续会不定期更新其他小游戏,目前以简单的动作小游戏、棋牌类为主,想到啥做啥,或者大家有什么想做想玩的可以评论区告诉我哈,搞得定的我会尽快完成;

最后的最后
大家可以到我的Github上看看有没有其他需要的东西,目前主要是自己做的机器学习项目、Python各种脚本工具、有意思的小项目以及Follow的大佬、Fork的项目等:

THE END

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