Cat particles with pygame

I did not made this, I just changed the code a little bit. Here is another interesting code to make particles.

https://github.com/formazione/PygameParticles

import pygame, sys, random	

class ParticlePrinciple:
	def __init__(self):
		self.particles = []

	def emit(self):
		if self.particles:
			self.delete_particles()
			for particle in self.particles:
				particle[0][1] += particle[2][0]
				particle[0][0] += particle[2][1]
				particle[1] -= 0.2
				pygame.draw.circle(screen,pygame.Color('White'),particle[0], int(particle[1]))

	def add_particles(self):
		pos_x = pygame.mouse.get_pos()[0]
		pos_y = pygame.mouse.get_pos()[1] 
		radius = 10
		direction_x = random.randint(-3,3)
		direction_y = random.randint(-3,3)
		particle_circle = [[pos_x,pos_y],radius,[direction_x,direction_y]]
		self.particles.append(particle_circle)

	def delete_particles(self):
		particle_copy = [particle for particle in self.particles if particle[1] > 0]
		self.particles = particle_copy
class ParticleNyan:
	def __init__(self):
		self.particles = []
		self.size = 12

	def emit(self):
		if self.particles:
			self.delete_particles()
			for particle in self.particles:
				particle[0].x -= 1
				pygame.draw.rect(screen,particle[1],particle[0])

		self.draw_nyancat()

	def add_particles(self,offset,color):
		pos_x = pygame.mouse.get_pos()[0]
		pos_y = pygame.mouse.get_pos()[1] + offset
		
		particle_rect = pygame.Rect(int(pos_x - self.size/2),int(pos_y - self.size/2),self.size,self.size)
		self.particles.append((particle_rect,color))

	def delete_particles(self):
		particle_copy = [particle for particle in self.particles if particle[0].x > 0]
		self.particles = particle_copy

	def draw_nyancat(self):
		nyan_rect = nyan_surface.get_rect(center = pygame.mouse.get_pos())
		screen.blit(star,nyan_rect)

class ParticleStar:
	def __init__(self):
		self.particles = []
		self.surface = pygame.image.load('star.png').convert_alpha()
		self.width = self.surface.get_rect().width
		self.height = self.surface.get_rect().height

	def emit(self):
		if self.particles:
			self.delete_particles()
			for particle in self.particles:
				particle[0].x += particle[1]
				particle[0].y += particle[2]
				particle[3] -= 0.2
				screen.blit(self.surface,particle[0])
				pos_x = pygame.mouse.get_pos()[0]
				pos_y = pygame.mouse.get_pos()[1]
				screen.blit(nyan_surface, (pos_x - 100, pos_y-50))

	def add_particles(self):
		pos_x = pygame.mouse.get_pos()[0] - self.width / 2
		pos_y = pygame.mouse.get_pos()[1] - self.height / 2
		direction_x = random.randint(-3,3)
		direction_y = random.randint(-3,3)
		lifetime = random.randint(4,10)
		particle_rect = pygame.Rect(int(pos_x),int(pos_y),self.width,self.height)
		self.particles.append([particle_rect,direction_x,direction_y,lifetime])

	def delete_particles(self):
		particle_copy = [particle for particle in self.particles if particle[3] > 0]
		self.particles = particle_copy

pygame.init()
screen = pygame.display.set_mode((500,500))
clock = pygame.time.Clock()

particle1 = ParticlePrinciple()

star = pygame.image.load('star.png').convert_alpha()
nyan_surface = pygame.image.load('nyan_cat.png').convert_alpha()
particle2 = ParticleNyan()

particle3 = ParticleStar()

PARTICLE_EVENT = pygame.USEREVENT + 1
pygame.time.set_timer(PARTICLE_EVENT,1)

while True:
	for event in pygame.event.get():
		if event.type == pygame.QUIT:
			pygame.quit()
			sys.exit()
		if event.type == PARTICLE_EVENT:
			#particle1.add_particles()
			# particle2.add_particles(-30,pygame.Color("Red"))
			# particle2.add_particles(-18,pygame.Color("Orange"))
			# particle2.add_particles(-6,pygame.Color("Yellow"))
			# particle2.add_particles(6,pygame.Color("Green"))
			# particle2.add_particles(18,pygame.Color("Blue"))
			# particle2.add_particles(30,pygame.Color("Purple"))
			particle3.add_particles()

	screen.fill((30,30,30))
	#particle1.emit()
	#particle2.emit()
	particle3.emit()
	pygame.display.update()
	clock.tick(120)