day11 pygame应用

01 pygame事件

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()

    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', event.pos)

            if event.type == pygame.MOUSEBUTTONUP:
                print('鼠标弹起', event.pos)

            if event.type == pygame.MOUSEMOTION:
                print('鼠标移动', event.pos)

            # 键盘相关事件
            # key属性，被按的按键对应的值得编码
            if event.type == pygame.KEYDOWN:
                print('键盘按键被按下', chr(event.key))

            if event.type == pygame.KEYUP:
                print('键盘按键弹起', chr(event.key))

02 鼠标事件的运用

import pygame
from random import randint
def rand_color():
    """
    产生随机颜色
    """
    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))

    # 只要屏幕上的内容有更新。都需要调用下面这两个方法中的一个
    # pygame.display.flip()
    pygame.display.flip()

# 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
    return False

def draw_button(screen, bith_color, title_color):

    # 画个按钮
    """矩形框"""
    pygame.draw.rect(screen, bith_color, (100, 100, 100, 60))
    """文字"""
    font = pygame.font .SysFont('Times', 30)
    title = font.render('QCG', True, title_color)
    screen.blit(title, (120, 120))
    pygame.display.flip()


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')

    pygame.display.flip()

    # 画个按钮
    # draw_button(screen, (0, 255, 0), (255, 0, 0))
    # """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('QCG', True, (255, 0, 0))
    # screen.blit(title, (120, 120))
    # pygame.display.flip()



    while True:
        for event in pygame.event.get():

            # 退出
            if event.type == pygame.QUIT:
                exit()

            if event.type == pygame.MOUSEBUTTONDOWN:
               # draw_ball(screen, event.pos)
                if is_in_rect(event.pos, (100, 100, 100, 60)):
                    draw_button(screen, (0, 0, 255), (0, 0, 0))
                    print('点中按钮')

            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)

03 鼠标事件的应用2

要求：先在屏幕上显示一张图片，鼠标按下移动的时候，拽着图片一起动，鼠标弹起就不动了

import pygame

# 写一个函数，判断一个点是否在图片上
def is_in_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('图片拖拽')

    #显示图片
    image = pygame.image.load('./image.jpeg')
    image = pygame.transform.scale(image, (100, 100))
    image_x = 100
    image_y = 100
    screen.blit(image, (image_x, image_y))



    pygame.display.flip()
    # 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，让状态变为可以移动;
            if event.type == pygame.MOUSEBUTTONDOWN:
                w, h = image.get_size()
                if is_in_rect(event.pos, (image_x, image_y, w, h)):
                    is_move = True

            # 鼠标弹起，让状态变为不可以移动：
            if event.type == pygame.MOUSEBUTTONUP:
                is_move = False
            if is_move:
                if event.type == pygame.MOUSEMOTION:
                        screen.fill((255, 255, 255))
                        x, y = event.pos
                        image_w, image_h = image.get_size()
                        # 保证鼠标在图片的中心
                        image_x = x - image_w/2
                        image_y = y - image_h/2
                        screen.blit(image, (image_x, image_y))
                        pygame.display.update()

04 动画效果

动画原理：不断刷新界面上的内容（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, (100, 100))

def animation_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, (200, 200))

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


    pygame.display.flip()


    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                exit()

            # 在下面写每一帧要显示的内容
            """程序执行到这个位置，cpu休息一段时间后自治性后面的代码（线程在这儿）"""
        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)
        animation_title(screen)

        pygame.display.flip()

05 ballgame

import pygame

def draw_ball(place,color,pos):
    """
    画球
    """
    pygame.draw.circle(place, color, pos, 20)
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.flip()
    # 保存初始坐标
    ball_x = 100
    ball_y = 100
    x_speed = 1
    y_speed = 0

    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 = -1
                x_speed = 0
            elif event.key == Down:
                x_speed = 0
                y_speed = 1
            elif event.key == Right:
                x_speed = 1
                y_speed = 0
            elif event.key == Left:
                x_speed = -1
                y_speed = 0


        # 刷新屏幕
        screen.fill((255, 255, 255))
        # 每次循环让球的x
        ball_x += x_speed
        ball_y += y_speed
        if ball_x + 20 >= 600 or ball_x -20 <= 0 or ball_y + 20 >= 400 or ball_y - 20 <= 0:
            print('游戏结束')
            break
        #     ball_x = 600 - 20
        #     x_speed *= -1
        # if ball_x - 20 <= 0:
        #     ball_x = 0 + 20
        #     x_speed *= -1
        draw_ball(screen, (255, 0, 0), (ball_x, ball_y))

        pygame.display.update()

06 多个球一起动

import pygame
import random
# random_color = (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))

if __name__ == '__main__':
    pygame.init()
    screen = pygame.display.set_mode((600, 400))
    screen.fill((255, 255, 255))
    pygame.display.flip()
    random_color = random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)

    # all_balls中保存多个球
    # 每个球要保存：半径，圆心坐标，颜色，x速度，y速度
    all_balls = [
        {'r': random.randint(10, 20),
         'pos': (100, 100),
         'color': (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)),
         'x_speed': random.randint(-1, 1),
         'y_speed': random.randint(-1, 1)
        },
        {'r': random.randint(10, 20),
         'pos': (10, 50),
         'color': (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)),
         'x_speed': random.randint(-1, 1),
         'y_speed': random.randint(-1, 1)
         },
        {'r': random.randint(10, 20),
         'pos': (200, 200),
         'color': (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)),
         'x_speed': random.randint(-1, 1),
         'y_speed': random.randint(-1, 1)
         },

    ]

    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                exit()

            if event.type == pygame.MOUSEBUTTONDOWN:
            # 点一下鼠标创建一个球
                ball = {
                          'r': random.randint(10, 25),
                          'pos': event.pos,
                          'color': (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)),
                          'x_speed': random.randint(-1, 1),
                          'y_speed': random.randint(-1, 1)
                        }

                all_balls.append(ball)

        # 刷新界面
        screen.fill((255, 255, 255))
        for ball_dict in all_balls:
            # 取出原来的x坐标和y坐标以及他们的速度
            x, y = ball_dict['pos']

            x_speed = ball_dict['x_speed']
            y_speed = ball_dict['y_speed']

            x += x_speed
            y += y_speed
            pygame.draw.circle(screen, ball_dict['color'], (x, y), ball_dict['r'])


            # 更新对应的坐标
            ball_dict['pos'] = x, y


            # pygame.display.flip()
            if x + ball_dict['r'] >= 600:

                x = 600 - ball_dict['r']
                x_speed *= -1
                ball_dict['x_speed'] = x_speed

            if x - ball_dict['r'] <= 0:
                x = 0 + ball_dict['r']
                x_speed *= -1
                ball_dict['x_speed'] = x_speed

            if y + ball_dict['r'] >= 400:
                y = 400 -ball_dict['r']
                y_speed *= -1
                ball_dict['y_speed'] = y_speed

            if y -ball_dict['r'] <= 0:
                y = 0 + ball_dict['r']
                y_speed *= -1
                ball_dict['y_speed'] = y_speed



            ball_dict['pos'] = x, y
            pygame.draw.circle(screen, ball_dict['color'], (x, y), ball_dict['r'])

        pygame.time.delay(10)


        pygame.display.update()