python鼠标交互绘制彩虹圆圈

import pgzrun
import random
import time
WIDTH = 800
HEIGHT = 600

balls = []


def draw():
screen.fill('white')
for ball in balls:
for x in range(1, ball[4], 3):
screen.draw.filled_circle(
(ball[0], ball[1]), ball[4]-x, (random.randint(ball[5], 255), random.randint(ball[6], 255), random.randint(ball[7], 255)))


def update():
for ball in balls:
ball[0] = ball[0]+ball[2]
ball[1] = ball[1]+ball[3]
if ball[0] > WIDTH-ball[4] or ball[0] < ball[4]:
ball[2] = -ball[2]
if ball[1] > HEIGHT-ball[4] or ball[1] < ball[4]:
ball[3] = -ball[3]


def on_mouse_move(pos, rel, buttons):
# time.sleep(1)
x = pos[0]
y = pos[1]
speed_x = random.randint(1, 5)
speed_y = random.randint(1, 5)
r = random.randint(5, 50)
colorR = random.randint(10, 255)
colorG = random.randint(10, 255)
colorB = random.randint(10, 255)
ball = [x, y, speed_x, speed_y, r, colorR, colorG, colorB]
balls.append(ball)


pgzrun.go()