import tkinter
import tkinter.messagebox


def main():
  flag = True

  # 修改標(biāo)簽上的文字
  def change_label_text():
    nonlocal flag
    flag = not flag
    color, msg = ('red', 'Hello, world!')\
      if flag else ('blue', 'Goodbye, world!')
    label.config(text=msg, fg=color)

  # 確認(rèn)退出
  def confirm_to_quit():
    if tkinter.messagebox.askokcancel('溫馨提示', '確定要退出嗎?'):
      top.quit()

  # 創(chuàng)建頂層窗口
  top = tkinter.Tk()
  # 設(shè)置窗口大小
  top.geometry('240x160')
  # 設(shè)置窗口標(biāo)題
  top.title('小游戲')
  # 創(chuàng)建標(biāo)簽對(duì)象并添加到頂層窗口
  label = tkinter.Label(top, text='Hello, world!', font='Arial -32', fg='red')
  label.pack(expand=1)
  # 創(chuàng)建一個(gè)裝按鈕的容器
  panel = tkinter.Frame(top)
  # 創(chuàng)建按鈕對(duì)象 指定添加到哪個(gè)容器中 通過(guò)command參數(shù)綁定事件回調(diào)函數(shù)
  button1 = tkinter.Button(panel, text='修改', command=change_label_text)
  button1.pack(side='left')
  button2 = tkinter.Button(panel, text='退出', command=confirm_to_quit)
  button2.pack(side='right')
  panel.pack(side='bottom')
  # 開(kāi)啟主事件循環(huán)
  tkinter.mainloop()


if __name__ == '__main__':
  main()

import pygame


def main():
  # 初始化導(dǎo)入的pygame中的模塊
  pygame.init()
  # 初始化用于顯示的窗口并設(shè)置窗口尺寸
  screen = pygame.display.set_mode((800, 600))
  # 設(shè)置當(dāng)前窗口的標(biāo)題
  pygame.display.set_caption('大球吃小球')
  running = True
  # 開(kāi)啟一個(gè)事件循環(huán)處理發(fā)生的事件
  while running:
    # 從消息隊(duì)列中獲取事件并對(duì)事件進(jìn)行處理
    for event in pygame.event.get():
      if event.type == pygame.QUIT:
        running = False


if __name__ == '__main__':
  main()

import pygame


def main():
  # 初始化導(dǎo)入的pygame中的模塊
  pygame.init()
  # 初始化用于顯示的窗口并設(shè)置窗口尺寸
  screen = pygame.display.set_mode((800, 600))
  # 設(shè)置當(dāng)前窗口的標(biāo)題
  pygame.display.set_caption('大球吃小球')
  # 設(shè)置窗口的背景色(顏色是由紅綠藍(lán)三原色構(gòu)成的元組)
  screen.fill((242, 242, 242))
  # 繪制一個(gè)圓(參數(shù)分別是: 屏幕, 顏色, 圓心位置, 半徑, 0表示填充圓)
  pygame.draw.circle(screen, (255, 0, 0,), (100, 100), 30, 0)
  # 刷新當(dāng)前窗口(渲染窗口將繪制的圖像呈現(xiàn)出來(lái))
  pygame.display.flip()
  running = True
  # 開(kāi)啟一個(gè)事件循環(huán)處理發(fā)生的事件
  while running:
    # 從消息隊(duì)列中獲取事件并對(duì)事件進(jìn)行處理
    for event in pygame.event.get():
      if event.type == pygame.QUIT:
        running = False


if __name__ == '__main__':
  main()

import pygame


def main():
  # 初始化導(dǎo)入的pygame中的模塊
  pygame.init()
  # 初始化用于顯示的窗口并設(shè)置窗口尺寸
  screen = pygame.display.set_mode((800, 600))
  # 設(shè)置當(dāng)前窗口的標(biāo)題
  pygame.display.set_caption('大球吃小球')
  # 設(shè)置窗口的背景色(顏色是由紅綠藍(lán)三原色構(gòu)成的元組)
  screen.fill((255, 255, 255))
  # 通過(guò)指定的文件名加載圖像
  ball_image = pygame.image.load('./res/ball.png')
  # 在窗口上渲染圖像
  screen.blit(ball_image, (50, 50))
  # 刷新當(dāng)前窗口(渲染窗口將繪制的圖像呈現(xiàn)出來(lái))
  pygame.display.flip()
  running = True
  # 開(kāi)啟一個(gè)事件循環(huán)處理發(fā)生的事件
  while running:
    # 從消息隊(duì)列中獲取事件并對(duì)事件進(jìn)行處理
    for event in pygame.event.get():
      if event.type == pygame.QUIT:
        running = False


if __name__ == '__main__':
  main()

import pygame


def main():
  # 初始化導(dǎo)入的pygame中的模塊
  pygame.init()
  # 初始化用于顯示的窗口并設(shè)置窗口尺寸
  screen = pygame.display.set_mode((800, 600))
  # 設(shè)置當(dāng)前窗口的標(biāo)題
  pygame.display.set_caption('大球吃小球')
  # 定義變量來(lái)表示小球在屏幕上的位置
  x, y = 50, 50
  running = True
  # 開(kāi)啟一個(gè)事件循環(huán)處理發(fā)生的事件
  while running:
    # 從消息隊(duì)列中獲取事件并對(duì)事件進(jìn)行處理
    for event in pygame.event.get():
      if event.type == pygame.QUIT:
        running = False
    screen.fill((255, 255, 255))
    pygame.draw.circle(screen, (255, 0, 0,), (x, y), 30, 0)
    pygame.display.flip()
    # 每隔50毫秒就改變小球的位置再刷新窗口
    pygame.time.delay(50)
    x, y = x + 5, y + 5


if __name__ == '__main__':
  main()

from enum import Enum, unique
from math import sqrt
from random import randint

import pygame


@unique
class Color(Enum):
  """顏色"""

  RED = (255, 0, 0)
  GREEN = (0, 255, 0)
  BLUE = (0, 0, 255)
  BLACK = (0, 0, 0)
  WHITE = (255, 255, 255)
  GRAY = (242, 242, 242)

  @staticmethod
  def random_color():
    """獲得隨機(jī)顏色"""
    r = randint(0, 255)
    g = randint(0, 255)
    b = randint(0, 255)
    return (r, g, b)


class Ball(object):
  """球"""

  def __init__(self, x, y, radius, sx, sy, color=Color.RED):
    """初始化方法"""
    self.x = x
    self.y = y
    self.radius = radius
    self.sx = sx
    self.sy = sy
    self.color = color
    self.alive = True

  def move(self, screen):
    """移動(dòng)"""
    self.x += self.sx
    self.y += self.sy
    if self.x - self.radius <= 0 or \
        self.x + self.radius >= screen.get_width():
      self.sx = -self.sx
    if self.y - self.radius <= 0 or \
        self.y + self.radius >= screen.get_height():
      self.sy = -self.sy

  def eat(self, other):
    """吃其他球"""
    if self.alive and other.alive and self != other:
      dx, dy = self.x - other.x, self.y - other.y
      distance = sqrt(dx ** 2 + dy ** 2)
      if distance < self.radius + other.radius \
          and self.radius > other.radius:
        other.alive = False
        self.radius = self.radius + int(other.radius * 0.146)

  def draw(self, screen):
    """在窗口上繪制球"""
    pygame.draw.circle(screen, self.color,
              (self.x, self.y), self.radius, 0)

def main():
  # 定義用來(lái)裝所有球的容器
  balls = []
  # 初始化導(dǎo)入的pygame中的模塊
  pygame.init()
  # 初始化用于顯示的窗口并設(shè)置窗口尺寸
  screen = pygame.display.set_mode((800, 600))
  # 設(shè)置當(dāng)前窗口的標(biāo)題
  pygame.display.set_caption('大球吃小球')
  running = True
  # 開(kāi)啟一個(gè)事件循環(huán)處理發(fā)生的事件
  while running:
    # 從消息隊(duì)列中獲取事件并對(duì)事件進(jìn)行處理
    for event in pygame.event.get():
      if event.type == pygame.QUIT:
        running = False
      # 處理鼠標(biāo)事件的代碼
      if event.type == pygame.MOUSEBUTTONDOWN and event.button == 1:
        # 獲得點(diǎn)擊鼠標(biāo)的位置
        x, y = event.pos
        radius = randint(10, 100)
        sx, sy = randint(-10, 10), randint(-10, 10)
        color = Color.random_color()
        # 在點(diǎn)擊鼠標(biāo)的位置創(chuàng)建一個(gè)球(大小、速度和顏色隨機(jī))
        ball = Ball(x, y, radius, sx, sy, color)
        # 將球添加到列表容器中
        balls.append(ball)
    screen.fill((255, 255, 255))
    # 取出容器中的球 如果沒(méi)被吃掉就繪制 被吃掉了就移除
    for ball in balls:
      if ball.alive:
        ball.draw(screen)
      else:
        balls.remove(ball)
    pygame.display.flip()
    # 每隔50毫秒就改變球的位置再刷新窗口
    pygame.time.delay(50)
    for ball in balls:
      ball.move(screen)
      # 檢查球有沒(méi)有吃到其他的球
      for other in balls:
        ball.eat(other)


if __name__ == '__main__':
  main()