pygame事件

"""__author__zhangdong__"""
import pygame
if __name__ == '__main__':
    pygame.init()
    screen = pygame.display.set_mode((600,400))
    screen.fill((255,255,255))
    #设置窗口标题
    pygame.display.set_caption('游戏事件')



    pygame.display.flip()




    """
    QUIT:关闭按钮被点击事件
    MOUSEBUTTONDOWN：鼠标按下弹起
    MOUSEMOTION：鼠标移动
    鼠标相关事件关心事件产生的位置
    
    
    """

    while True:
        #每次循环检测有没有事件发生
        for event in pygame.event.get():
            #不同类型的事件对应的type值不一样
            if event.type == pygame.QUIT:
                exit()
            #鼠标相关事件
            #pos属性，获取鼠标事件产生的位置
            if event.type == pygame.MOUSEBUTTONDOWN:
                print('鼠标按下')
            if event.type == pygame.MOUSEBUTTONUP:
                print('鼠标弹起',event.pos)
            if event.type == pygame.MOUSEMOTION:
                print('鼠标移动')
            #键盘相关事件
            #key属性，被按的按键对应的值的编码
            if event.type == pygame.KEYDOWN:
                print('键盘按键被按下',chr(event.key))
            if event.type == pygame.KEYUP:
                print('键盘按钮弹起')

效果

7.gif

二、鼠标事件的应用

"""__author__zhangdong__"""
import pygame
from random import randint
def rand_color():
    return randint(0,255),randint(0,255),randint(0,255)

def draw_ball(screen,pos):
    pygame.draw.circle(screen, rand_color(),pos, randint(10, 20))
 #写一个函数，判断指定的点是否在指定的矩形范围内
def is_in_rect(point,rect):
    x,y = point
    rx,ry,rw,rh = rect
    if (rx<=x<=rx+rw) and (ry<=y<=ry+rh):
        return True
#写一个函数，画一个按钮
def draw_button(screen,bth_color,title_color):
    pygame.draw.rect(screen, bth_color, (100, 100, 100, 60))
    """文字"""
    font = pygame.font.SysFont('Times', 30)
    title = font.render('come on', True, title_color)
    screen.blit(title, (120, 120))

if __name__ == '__main__':
    pygame.init()
    screen  = pygame.display.set_mode((600,400))
    screen.fill((255,255,255))
    pygame.display.set_caption('鼠标事件')

    #画个按钮
    # """矩形框"""
    # pygame.draw.rect(screen,(0,255,0),(100,100,100,60))
    # """文字"""
    # font = pygame.font.SysFont('Times',30)
    # title = font.render('come on',True,(255,0,0))
    # screen.blit(title,(120,120))
    draw_button(screen,(0,255,0),(255,0,0))

    pygame.display.flip()



    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                exit()
            if event.type == pygame.MOUSEBUTTONDOWN:
                #在指定的坐标画一个球
                # draw_ball(screen,event.pos)
                if is_in_rect(event.pos,(100,100,100,60)):
                    draw_button(screen,(0,100,0),(100,0,0))
                    pygame.display.update()
            if event.type == pygame.MOUSEBUTTONUP:
                if is_in_rect(event.pos,(100,100,100,60)):
                    draw_button(screen,(0,255,0),(255,0,0))
                    pygame.display.update()
            if event.type == pygame.MOUSEMOTION:
                screen.fill((255,255,255))
                draw_button(screen,(0,255,0),(255,0,0))
                draw_ball(screen,event.pos)
                pygame.display.flip(

结果

5.gif

三、鼠标事件应用2

"""__author__zhangdong__"""
import pygame
#写一个函数是否在某个范围内
def is_rect(pos,rect):
    x,y = pos
    rx,ry,rw,rh = rect
    if rx<=x<=rx+rw and ry<=y<=ry+rh:
        return True
    return False





if __name__ == '__main__':
    pygame.init()
    screen = pygame.display.set_mode((600,400))
    screen.fill((255,255,255))
    pygame.display.set_caption('鼠标事件')


    image = pygame.image.load('./飞机大战/photo1.jpg')
    image = pygame.transform.scale(image, (100, 80))
    image_x = 100
    image_y = 100
    screen.blit(image,(image_x,image_y))





    pygame.display.flip()

    #y用来存储图片是否可以移动
    is_move = False
    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                exit()
            # 鼠标按下，让状态变成可以移动
            if event.type == pygame.MOUSEBUTTONDOWN:
                w,h = image.get_size()
                if is_rect(event.pos,(image_x,image_y,w,h)):
                    is_move = True
            # 鼠标弹起，让状态变成不可以移动
            if event.type == pygame.MOUSEBUTTONUP:
                is_move =False





                # 鼠标移动对应的事件
            if event.type == pygame.MOUSEMOTION:
                if is_move:
                    screen.fill((255,255,255))
                    x,y = event.pos
                    image_w,image_h = image.get_size()
                    #保证鼠标在图片中心
                    image_y = y-image_h/2
                    image_x = x-image_w/2
                    screen.blit(image,(image_x,image_y))
                    pygame.display.flip()

结果

4.gif

四、动画效果

"""__author__zhangdong__"""
"""
动画原理：不断的刷新界面上的内容(一帧一帧的画)
"""

import pygame
from random import randint
def static_page(screen):
    font = pygame.font.SysFont('Times',40)
    title = font.render('Welcome',True,(0,0,0))
    screen.blit(title,(200,200))

def animtion_title(screen):
    font = pygame.font.SysFont('Times', 40)
    title = font.render('Python', True, (randint(0,255),randint(0,255),randint(0,255)))
    screen.blit(title, (100, 100))
if __name__ == '__main__':
    pygame.init()
    screen = pygame.display.set_mode((600,400))
    screen.fill((255,255,255))
    static_page(screen)
    pygame.display.set_caption('动画效果')


    pygame.display.flip()

    while True:
        #for里面的代码只有时间发生后才会执行
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                exit()

        #在下面去写每一帧要显示的内容
        """程序执行到这个位置，cpu休息一段时间再执行后面的代码
        线程在这儿阻塞指定的时间
        单位：毫秒 （1000ms = 1s
        """
        pygame.time.delay(60)
        #动画前要将原来的内容全部清空
        screen.fill((255,255,255))
        static_page(screen)
        animtion_title(screen)
        #内容展示完成后，要更新到屏幕上
        pygame.display.flip()

结果

3.gif

五、ball

"""__author__zhangdong__"""
import pygame


def draw_ball(place,color,pos):
    """
    画球
    """
    pygame.draw.circle(place,color,pos,20)
##方向对应的key值
up = 273
down = 274
left = 276
right = 275
if __name__ == '__main__':
    pygame.init()
    screen = pygame.display.set_mode((600,400))
    screen.fill((255,255,255))
    pygame.display.set_caption('ball')



    pygame.display.update()
    #保存初始坐标
    ball_x = 100
    ball_y = 100
    x_speed = 5
    y_speed = 5


    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                exit()
            if event.type == pygame.KEYDOWN:
                if event.key == up:
                    y_speed = -5
                    x_speed = 0
                elif event.key == down:
                    y_speed = 5
                    x_speed = 0
                elif event.key == left:
                    x_speed = -5
                    y_speed = 0
                elif event.key == right:
                    x_speed = 5
                    y_speed = 0



        #刷新屏幕
        pygame.time.delay(10)
        screen.fill((255,255,255))
        #每次循环让的x
        ball_x +=x_speed
        ball_y +=y_speed
        if ball_x+20>=600:
            ball_x = 600-20
            x_speed *= -1
        if ball_x<=20:
            ball_x=20
            x_speed *= -1
        if ball_y+20>=400:
            ball_y = 400-20
            y_speed *= -1
        if ball_y<= 20:
            ball_y = 20
            y_speed *= -1
        draw_ball(screen,(255,0,0),(ball_x,ball_y))

        pygame.display.update(

结果

2.gif