[UNITY] 2D Game Development Walkthrough

视频：https:/unity3d.com/cn/learn/tutorials/topics/2d-game-creation/2d-game-development-walkthrough?playlist=17093

有一个构思中的2D Puzzle-Platformer，想要在4月20号前做出一个demo。

作为我的第一个unity游戏，可能会很简单，但是也要占用我大部分时间，所以《the art of game design》估计得放放了。

先就这个视频看看在制作2D Platformer游戏时候的基本模式。

   This video will discuss the background and foreground construction, characters, effects,camera tracking, animation and scripting.

 1:26    可以往2D项目里面添加3D Object（Enter the Gungeon的橘子233）

  2:45    利用线性插值完成背景的视差效果：

// Lerp the background's position between itself and it's target position.
backgrounds[i].position = Vector3.Lerp(backgrounds[i].position, backgroundTargetPos, smoothing * Time.deltaTime);

  4:05    使用Animation （Ctrl+6）编辑Sprite动画，类似3DsMax的Curve Editor。

  8:07    角色转身时使用函数flip()来翻转角色：

// If the input is moving the player right and the player is facing left...
if(h > 0 && !facingRight)
    // ... flip the player.
    Flip();
// Otherwise if the input is moving the player left and the player is facing right...
else if(h < 0 && facingRight)
    // ... flip the player.
    Flip();

  void Flip ()
{
        // Switch the way the player is labelled as facing.
        facingRight = !facingRight;

        // Multiply the player's x local scale by -1.
        Vector3 theScale = transform.localScale;
        theScale.x *= -1;
        transform.localScale = theScale;
}

  8:48    在Update()下检查角色是否在地面上（grounded），使用Physics2D.Linecast()来检查：

// The player is grounded if a linecast to the groundcheck position hits anything on the ground layer.

grounded = Physics2D.Linecast(transform.position, groundCheck.position, 1 << LayerMask.NameToLayer("Ground"));

其中“1 << LayerMask.NameToLayer("Ground")”卡了我好久。。。然后看到了这个

http://answers.unity3d.com/questions/701862/2d-example-project-parameter-of-physics2dlinecast.html

完美地解答了我的问题。

顺便，这个问题 How do I use layermasks? 也十分值得一看：

http://answers.unity3d.com/questions/8715/how-do-i-use-layermasks.html

2017年4月4日23:00:10