handleInput()
{
    if (checkAction(LEFT))
    {
        wannaGo::LEFT;
    }
    else if (checkAction(RIGHT))
    {
        wannaGo::RIGHT;
    }
    else
    {
        wannaGo::STAY;
    }

    wannaJUMP = (checkAction(JUMP));
}

move()
{
    handleHorizontalMovement();
    handleVerticalMovement();
}

handleHorizontalMovement()
{
    if (State!=STANDING)
    {
        return;
    }

    if (automovement)
    {
        vx = FIXED_BY_ROOM;
    }
    else
    {
        vx = wannaGo::DIRECTION;
    }

    moveAndCollide();

}

handleVerticalMovement()
{
    if (State==STANDING)
    {
        return;
    }

    if (State==JUMPING)
    {
        applyGravity();
    }

    moveAndCollide();

}


handleConveyorBelts()
{
    if (!automovement and isOnConveyorBelt and wannaGo::STAY)
    {
        automovement = true;
    }

    if (automovement and !isOnConveyorBelt)
    {
        automovement = false;
    }
}

handleShouldFall()
{
    if (!isOnFloor and State::STANDING)
    {
        transitionToState(FALLING);
    }
}

transitionToState(state)
{
    prev = state_;
    state_ = state;

    switch (state)
    {
        case STANDING:
            vy = 0;
        case JUMPING:
            if (prev==STANDING)
            {
                vy = -MAX_VY;
                last_ground_position = y;
            }
        case FALLING:
            last_ground_position = y;
            vy = MAX_VY;
            vx = 0;
    }
}

updateState()
{
    switch (state)
    {
        case STANDING:
            handleConveyorBelts();
            handleShouldFall();
            if (wannaJump)
            {
                transitionToState(JUMPING);
            }
        case JUMPING:
            automovement = false;
            playJumpingSound();
            handleEndJump();
        case FALLING:
            automovement = false;
            playFallingSound();
    }
}

update()
{
    hanldeInput();
    updateState();
    move();
    animate();
}