pygame simple example

copy

# config.py 存放配置
import os,sys
resource_path = os.path.join(os.path.dirname(__file__),'..','data')
fist_image = os.path.join(resource_path,'fist.bmp')
whimp_image = os.path.join(resource_path,'nut.bmp')

punch_sound = os.path.join(resource_path,'punch.wav')
whiff_sound = os.path.join(resource_path,'whiff.wav')

whimp_speed = 8
whimp_rotate = 12

# fist.py 
import os,sys
import pygame
import config
from config import fist_image
from pygame.locals import *
from tool import load_image


class Fist(pygame.sprite.Sprite):
    '''拳头类，可出击'''
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image , self.rect = load_image(fist_image,-1)
        self.punching = False 

    def update(self):
        ''' 重写父类的 update '''
        mouse_pos = pygame.mouse.get_pos()
        # self.rect.midtop = mouse_pos
        if self.punching:
            self.rect.midtop = ( mouse_pos[0] + 5 , mouse_pos[1] + 5)
        else:
            self.rect.midtop = mouse_pos
            
    def punch(self,target):
        ''' 出击函数，检测是否与 target 产生碰撞'''
        self.punching = True
        if(self.rect.colliderect(target.rect)):
            return True
        else:
            return False

    def unpunch(self):
        '''恢复'''
        self.punching = False

# whimp.py
import os,sys
import pygame
from config import whimp_image,whimp_rotate,whimp_speed
from pygame.locals import *
from tool import load_image


class Whimp(pygame.sprite.Sprite):
    '''猴子类，不要问为什么图片是个坚果，就是可爱'''
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image ,self.rect = load_image(whimp_image,-1)
        self.origin = self.image
        # 设置初始位置
        self.rect.midtop = (self.rect.width / 2 , 0)
        screen = pygame.display.get_surface()
        self.right_limit = screen.get_rect().right - self.rect.width / 2
        self.left_limit = self.rect.width / 2
        self.angle = 0
        self.speed = whimp_speed
        
    def update(self):
        ''' 重写父类的 update '''
        if self.angle:
            self._spin()
        else:
            self._walk()
            
    def _walk(self):
        ''' 猴子跑步 '''
        # if not self.angle:
        target_x = self.rect.centerx + self.speed
        if target_x > self.right_limit or target_x < self.left_limit:
            self.speed = -self.speed
            self.image = pygame.transform.flip(self.image,-1,0)
        else:
            self.rect.centerx = target_x
                
    def _spin(self):
        ''' 猴子眩晕 '''
        center = self.rect.center
        self.angle += whimp_rotate
        if self.angle >= 360:
            self.angle = 0
            self.image = self.origin
        self.image = pygame.transform.rotate(self.origin,self.angle)
        self.rect = self.image.get_rect(center = center)

    def punched(self):
        ''' 被锤了，QAQ '''
        self.angle = 1

# tool.py 
import os,sys
import pygame
from pygame.locals import *
from pygame.compat import geterror

def load_image(name, colorkey=None):
    fullname = name
    try:
        image = pygame.image.load(fullname)
    except pygame.error as message:
        print("Cannot load image:", fullname)
        raise SystemExit(message)
    image = image.convert()
    if colorkey is not None:
        if colorkey == -1:
            colorkey = image.get_at((0, 0))
        image.set_colorkey(colorkey, RLEACCEL)
    return image, image.get_rect()

def load_sound(name):
    class NoneSound:
        def play(self):
            pass

    if not pygame.mixer or not pygame.mixer.get_init():
        return NoneSound()
    fullname = name
    try:
        sound = pygame.mixer.Sound(fullname)
    except pygame.error:
        print("Cannot load sound: %s" % fullname)
        raise SystemExit(str(geterror()))
    return sound

# main.py
import os,sys
import time
import pygame
from whimp import Whimp
from fist import Fist
from pygame.locals import *
from tool import load_sound
from config import whiff_sound,punch_sound

def main():

    if not pygame.font:
        print('sorry, this game no font')
    if not pygame.mixer.Sound:
        print('sorry,this game no sound')

    # 初始化背景，文字等
    pygame.init()
    screen = pygame.display.set_mode((400,80))
    bg = pygame.Surface(screen.get_size())
    bg = bg.convert()
    bg.fill((250,250,250))
    pygame.mouse.set_visible(0)
    # screen.blit(bg,(0,0)) 要从前往后画

    if pygame.font:
        text = pygame.font.Font(None,32).render('Hit The Nut And Win $$$',1,(10,10,10))
        bg.blit(text,(screen.get_width() / 2 - text.get_width() /2,30))
    screen.blit(bg,(0,0))
    pygame.display.flip()
    print(text.get_rect())
        
    
    # 准备资源，精灵，音效等
    clock = pygame.time.Clock()
    whimp = Whimp()
    fist = Fist()
    punch_s = load_sound(punch_sound)
    whiff_s = load_sound(whiff_sound)

    allsprite = pygame.sprite.RenderPlain((whimp,fist))

    # 主循环
    while True:
        clock.tick(60)
        for event in pygame.event.get():
            if event.type == pygame.QUIT or event.type == pygame.K_ESCAPE:
                exit()
            if event.type == pygame.MOUSEBUTTONDOWN:
                if fist.punch(whimp):
                    whimp.punched()
                    punch_s.play()
                else:
                    whiff_s.play()
            if event.type == pygame.MOUSEBUTTONUP:
                fist.unpunch()
        
        allsprite.update()

        screen.blit(bg,(0,0))
        allsprite.draw(screen)
        pygame.display.flip()

    

if __name__ == "__main__":
    main()

official

chimp

show

thinking

1、分清楚每一层需要干什么，比如一开始企图在 chimp 的 update 里写 event。。。但实际上应该是先获得当前帧的所有 event，然后再更新数据，最后在 update(更新渲染)
2、如果一时间不能接受那么多函数的话，可以用自己的方式代替，比如 move_ip 可以写成 x=xx, y=yy

remaining

pygame.transform.rotate() 每次变化都会有锯齿，然后如果一直用变换后的去变换，不到 10 次就会内存溢出，所以代码中一直是使用的原始图像变换