player to walk on the surface
def gravity_check(self):
hits = pygame.sprite.spritecollide(player ,ground_group, False)
if self.vel.y > 0:
if hits:
lowest = hits[0]
if self.pos.y < lowest.rect.bottom:
self.pos.y = lowest.rect.top + 1
self.vel.y = 0
self.jumping = False