import pygame, sys

def bouncing_rect():
    global x_speed, y_speed, other_speed
    moving_rect.x += x_speed
    moving_rect.y += y_speed

    # collision with screen borders
    if moving_rect.right >= screen_width or moving_rect.left <= 0:
        x_speed *= -1
    if moving_rect.bottom >= screen_height or moving_rect.top <= 0:
        y_speed *= -1

    # moving the other rectang;le 
    other_rect.y += other_speed
    if other_rect.top <= 0 or other_rect.bottom >= screen_height :
        other_speed *= -1

    # collisionn with rect
    collision_tolerance = 10
    if moving_rect.colliderect(other_rect):
        if abs(other_rect.top - moving_rect.bottom) < collision_tolerance and y_speed >0:
            y_speed *= -1
        if abs(other_rect.bottom - moving_rect.top) < collision_tolerance and y_speed <0:
            y_speed *= -1
        if abs(other_rect.right - moving_rect.left) < collision_tolerance and x_speed <0:
            x_speed *= -1
        if abs(other_rect.left - moving_rect.right) < collision_tolerance and x_speed >0:
            x_speed *= -1
    
    pygame.draw.rect(screen,(255,255,255), moving_rect)
    pygame.draw.rect(screen,(255,0,0), other_rect)


pygame.init()
clock = pygame.time.Clock()
screen_width, screen_height = 800,800
screen = pygame.display.set_mode((screen_width, screen_height))

moving_rect = pygame.Rect(350, 350, 100, 100)
x_speed, y_speed = 5,4

other_rect = pygame.Rect(300, 600, 200, 100)
other_speed = 2

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

    screen.fill((30,30,30))

    bouncing_rect()
    pygame.display.flip()
    clock.tick(60)