Movimiento limitado¶

import sys
import pygame as pg

WIDTH, HEIGHT = 720, 400
SPEED, FPS = 5, 60

pg.init()
display = pg.display.set_mode((WIDTH, HEIGHT))
background = pg.image.load("grass.png").convert_alpha()
dino_image = pg.image.load("dino.png").convert_alpha()
dino_rect = dino_image.get_rect()
clock = pg.time.Clock()

while 1:
    for event in pg.event.get():
        if event.type == pg.QUIT:
            sys.exit()

    clock.tick(FPS)

    keys = pg.key.get_pressed()
    if keys[pg.K_LEFT] and dino_rect.left > 0:
        dino_rect.x -= SPEED
    if keys[pg.K_RIGHT] and dino_rect.right < WIDTH:
        dino_rect.x += SPEED
    if keys[pg.K_UP] and dino_rect.top > 0:
        dino_rect.y -= SPEED
    if keys[pg.K_DOWN] and dino_rect.bottom < HEIGHT:
        dino_rect.y += SPEED

    display.blit(background, (0, 0))
    display.blit(dino_image, dino_rect)

    pg.display.update()