python球球大作战简化版

大球吃小球

import pygame
import random


class Color:
    @classmethod
    def random_color(cls):
        red = random.randint(0, 255)
        green = random.randint(0, 255)
        blue = random.randint(0, 255)
        return (red, green, blue)


class Ball:
    def __init__(self, cx, cy, radius, sx, sy, color):
        self.cx = cx
        self.cy = cy
        self.radius = radius
        self.sx = sx
        self.sy = sy
        self.color = color
        self.is_alive = True  # 球的默认存活状态

    # 行为:
    # 移动 : 在哪里移动
    def move(self, window):
        self.cx += self.sx
        self.cy += self.sy

        # 圆心点发生变化  需要做边界判断
        # 横向出界
        if self.cx - self.radius <= 0 or self.cx + self.radius >= window.get_width():
            self.sx = -self.sx

        # 纵向出界
        if self.cy - self.radius <= 0 or self.cy + self.radius >= window.get_height():
            self.sy = -self.sy

    # 吃其他球
    def eat_ball(self, other):
        if self != other and self.is_alive and other.is_alive:
            # 吃到其他球的条件 两者圆心点的距离 < 两者半径之和
            distance = ((self.cx - other.cx) ** 2 + (self.cy - other.cy) ** 2)
            if distance < ((self.radius + other.radius) ** 2) and self.radius > other.radius:
                # 吃其他球
                other.is_alive = False
                # 自身半径在被吃球的半径的基础上增加0.14
                self.radius += int(other.radius * 0.14)

    # 出现对应 在界面上画出对应的一个球
    def draw(self, window):
        pygame.draw.circle(window, self.color, (self.cx, self.cy), self.radius)


if __name__ == '__main__':
    # 画质屏幕
    pygame.init()
    # 设置屏幕
    screen = pygame.display.set_mode((1400, 700))
    # 设置屏幕标题
    pygame.display.set_caption("大球吃小球")
    # 定义一容器  存放所有的球
    balls = []
    isrunning = True
    while isrunning:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                isrunning = False
            # 点击屏幕任意位置  1表示点击左键
            if event.type == pygame.MOUSEBUTTONDOWN and event.button == 1:
                pos = event.pos
                # 圆心点
                cx = pos[0]
                cy = pos[1]
                # 半径  10-100
                radius = random.randint(10, 50)
                # 速度
                sx, sy = random.randint(-5, 5), random.randint(-5, 5)
                # 颜色
                color = Color.random_color()
                # 根据以上信息创建球
                x_ball = Ball(cx, cy, radius, sx, sy, color)
                balls.append(x_ball)

        # 刷漆
        screen.fill((255, 255, 255))

        # 遍历容器
        for b in balls:
            if b.is_alive:
                b.draw(screen)
            else:
                balls.remove(b)
        # 渲染
        pygame.display.flip()

        # 设置动画的时间延迟
        pygame.time.delay(50)

        for b in balls:
            b.move(screen)
            for b1 in balls:
                b.eat_ball(b1)

 

来源：oschina

链接：https://my.oschina.net/u/4382335/blog/3867940