import pygame as pg
from pygame.sprite import Sprite

class Particle(Sprite):
    def __init__(self, screen, pos, size, color):
        super().__init__()
        self.screen = screen
        self.pos = pos
        self.size = size
        self.color = color
    def update(self):
        self.size -= 0.2

    def draw_particle(self):
        pg.draw.circle(self.screen, self.color, (self.pos[0], self.pos[1]), self.size)