2D角色 改變角色朝向

通過2D物體尺寸 x軸乘以-（負號）

void Flip ()
    {
        // Switch the way the player is labelled as facing.轉變朝向標籤
        facingRight = !facingRight;

        // Multiply the player's x local scale by -1.尺寸x軸乘以`-（負號）`
        Vector3 theScale = transform.localScale;
        theScale.x *= -1;
        transform.localScale = theScale;
    }