4-5 Simplify Unity's ThirdPersonCharacter Class

先來重構ThirdPersonCharacter.cs，由於我們的遊戲中不會使用到跳躍跟墜落狀態，所以原先由ThirdPersonCharacter所提供的相關函式都可以刪除。往後的重構還會將ThirdPersonCharacter刪除，但現階段我們必須先進行簡化後確保遊戲可以正常執行。

大家要記得重構時不要一次改變太多，我們需要先將真正需要的功能挑選出來，後續和其他類別合併時才能順利進行。

先看看目前的ThirdPersonCharacter，有太多不需要的參數了。

以下提供重構後的ThirdPersonCharacter.cs：

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using UnityEngine;   namespace UnityStandardAssets.Characters.ThirdPerson {  [RequireComponent(typeof(Rigidbody))]  [RequireComponent(typeof(CapsuleCollider))]  [RequireComponent(typeof(Animator))]  public class ThirdPersonCharacter : MonoBehaviour  {   [SerializeField] float movingTurnSpeed = 360;   [SerializeField] float stationaryTurnSpeed = 180;     Rigidbody myRigidbody;   Animator animator;   float turnAmount;   float forwardAmount;     void Start()   {    animator = GetComponent<animator>();    myRigidbody = GetComponent<rigidbody>();      myRigidbody.constraints = RigidbodyConstraints.FreezeRotationX | RigidbodyConstraints.FreezeRotationY | RigidbodyConstraints.FreezeRotationZ;      animator.applyRootMotion = true;   }       public void Move(Vector3 move)   {    // convert the world relative moveInput vector into a local-relative    // turn amount and forward amount required to head in the desired    // direction.    if (move.magnitude > 1f) move.Normalize();    move = transform.InverseTransformDirection(move);    turnAmount = Mathf.Atan2(move.x, move.z);    forwardAmount = move.z;      ApplyExtraTurnRotation();      // send input and other state parameters to the animator    UpdateAnimator(move);   }     void UpdateAnimator(Vector3 move)   {    // update the animator parameters    animator.SetFloat("Forward", forwardAmount, 0.1f, Time.deltaTime);    animator.SetFloat("Turn", turnAmount, 0.1f, Time.deltaTime);     }     void ApplyExtraTurnRotation()   {    // help the character turn faster (this is in addition to root rotation in the animation)    float turnSpeed = Mathf.Lerp(stationaryTurnSpeed, movingTurnSpeed, forwardAmount);    transform.Rotate(0, turnAmount * turnSpeed * Time.deltaTime, 0);   }  } }   </rigidbody></animator>

Animator內的Jump可以刪除了。

JumpLeg也可以刪除。

目前的ThirdPersonCharacter.cs參數看起來簡單多了吧。