He estado haciendo unapygame juego donde dos jugadores intentan golpear una pelota en una red. Tengo una función de impulso en mi juego, sin embargo, quiero algunos pads de impulso donde cuando se recogen, obtengo un impulso de +3. En mi código a continuación, hay uno amarillo enorme, cuando alguien pasa el mouse sobre él, recibe el impulso, pero puede permanecer en él para siempre y recibir mucho impulso. Me gustaría una forma en que la almohadilla de impulso se vuelva inactiva durante 3 segundos una vez que se haya recogido, y se vuelva gris. ¿Hay alguna forma de esto?

import pygame
from pygame.math import Vector2
import time, datetime
import sys

pygame.font.init()
pygame.init()

WIDTH = 1150
HEIGHT = 800
screen = pygame.display.set_mode((WIDTH, HEIGHT))
clock = pygame.time.Clock()

REDCAR_ORIGINAL = pygame.Surface((50, 30), pygame.SRCALPHA)
pygame.draw.polygon(
    REDCAR_ORIGINAL, (255, 0, 0), [(0, 30), (50, 20), (50, 10), (0, 0)])
redangle = 180
redcar = pygame.transform.rotate(REDCAR_ORIGINAL, redangle)
redangle = 180
booster = pygame.Surface((50, 150), pygame.SRCALPHA)
booster.fill((255, 255, 0))
booster1 = booster.get_rect(topleft=(0, 340))
boostermask = pygame.mask.from_surface(booster)

redspeed = 5

dx = 0
dy = 0
x = 800
y = 500
redscore = 0

pos_red = Vector2(x,y)
vel_red = Vector2(-redspeed,0)
redrect = redcar.get_rect(center=pos_red)
redangle = 180
redcar = pygame.transform.rotate(REDCAR_ORIGINAL, redangle)
pos_blue = Vector2(275,300)

# Masks.
mask_red = pygame.mask.from_surface(redcar)

def redboosts():
    global vel_red
    global timer
    global dt
    if timer > 0:
        vel_red.scale_to_length(10)
        timer -= dt

def slowdown():
    vel_red.scale_to_length(5)

timer = 3
dt = 1

run = True
while run:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False
        elif event.type == pygame.KEYDOWN:
          if event.key == pygame.K_r:
              # Reset the car to the start position.
              redangle = 180
              redcar = pygame.transform.rotate(REDCAR_ORIGINAL, redangle)
              pos_red = Vector2(800, 500)
              vel_red = Vector2(-redspeed, 0)
              redrect = redcar.get_rect(center=pos_red)
              mask_red = pygame.mask.from_surface(redcar)
          #elif event.key == pygame.K_s:
          #    vel_blue.scale_to_length(2)
        elif event.type == pygame.KEYUP:
            if event.key == pygame.K_UP:
                vel_red.scale_to_length(5)
            elif event.key == pygame.K_DOWN:
              vel_red.scale_to_length(5)

    print(timer)

    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
              redangle += 5
              vel_red.rotate_ip(-5)
              redcar = pygame.transform.rotate(REDCAR_ORIGINAL, redangle)
              redrect = redcar.get_rect(center=redrect.center)
              # We need a new mask after the rotation.
              mask_red = pygame.mask.from_surface(redcar)
    elif keys[pygame.K_RIGHT]:
              redangle -= 5
              vel_red.rotate_ip(5)
              redcar = pygame.transform.rotate(REDCAR_ORIGINAL, redangle)
              redrect = redcar.get_rect(center=redrect.center)
              mask_red = pygame.mask.from_surface(redcar)

    if keys[pygame.K_UP]:
              redboosts()
    if keys[pygame.K_DOWN]:
              vel_red.scale_to_length(2)
    if keys[pygame.K_s]:
              vel_blue.scale_to_length(2)

    if y <0:
        y = 10
    if y > 450:
        y = 440
    if x > 480:
        x = 470

    if redrect.top < 0 and vel_red.y < 0:
        redrect.top = 0
        pos_red = Vector2(redrect.center)
    elif redrect.bottom > screen.get_height() and vel_red.y > 0:
        redrect.bottom = screen.get_height()
        pos_red = Vector2(redrect.center)
    if redrect.left < 0 and vel_red.x < 0:
        redrect.left = 0
        pos_red = Vector2(redrect.center)
    elif redrect.right > screen.get_width() and vel_red.x > 0:
        redrect.right = screen.get_width()
        pos_red = Vector2(redrect.center)

    pos_red += vel_red
    redrect.center = pos_red

    offset = booster1[0] - redrect[0], booster1[1] - redrect[1]
    collectboost = mask_red.overlap(boostermask, offset)

    if timer <= 0:
        timer = 0
        vel_red.scale_to_length(5)
        slowdown()

    if collectboost:
        timer += 3
    screen.fill((50,200,50))
    screen.blit(redcar, redrect)
    screen.blit(booster, booster1)

    pygame.display.flip()
    dt = clock.tick(120)/1000
pygame.quit()