Quaternion.LookRotation

此函数作用是生成一个四元数表示的三维朝向，然后可以直接把这个朝向赋给游戏对象来变更其朝向，也可以通过线性插值（Quaternion.Slerp 和 Quaternion.Lerp）来实现游戏对象从当前朝向转到这个新生成的朝向上来。很方便也很好玩的东西，可就是两个参数理解起来太让人头大了……　　

官网对此函数的参数和解释如下：Quaternion.LookRotation static function LookRotation (forward : Vector3, upwards : Vector3 = Vector3.up) :

QuaternionDescriptionCreates a rotation that looks along forward with the the head upwards along upwardsLogs an error if the forward direction is zero.

矢量减法，如下图。



如伪代码：

this.FightDir = Vector3.zero;

this.FightDir = AttackRole.transform.position - base.transform.position;

this.FightDir = new Vector3(this.FightDir.x, 0f, this.FightDir.z);

this.FightDir = this.FightDir.normalized;

if (this.FightDir != Vector3.zero)

{

base.transform.rotation = Quaternion.LookRotation(this.FightDir);

}