step phase on character

void Sprite::step(int delta, SDL_Event event) {
    if (controller) {
        int space = delta * speed;
//      printf("Sprite[%s] will move %d on delta %d\n",name,space,delta);
        controller->step(delta, event);
        if (controller->canUp()) {
            pos.y -= space;
            direction = up;
        } else if (controller->canDown()) {
            pos.y += space;
            direction = down;
        }
        if (controller->canRight()) {
            pos.x += space;
            direction = right;
        } else if (controller->canLeft()) {
            pos.x -= space;
            direction = left;
        }

        if (controller->moved()) {
            cur += delta;
            if (cur > tpf) {
                cur = 0;
                anim++;
                anim %= seq->size();
            }
        } else
            anim = 0;
    }
}