【Unity3D】Unity自帶組件—完成第一人稱人物控制

1.導入unity自帶的Character Controllers包

　　

2.可以看到First Person Controller組件的構成

　　

　　Mouse Look() : 隨鼠標的移動而使所屬物體發生旋轉

　　FPSInput Controller() : 控制物體的移動

3.同樣的，我們為自己的模型添加以上四個組件

　　

　　其中Mouse Look() 中的Axes屬性，是調整圍繞的旋轉軸

　　所謂第一人稱就是，鼠標左右晃動則模型以X為軸進行旋轉

　　鼠標上下晃動則模型的腰關節以Z軸進行旋轉

4.找到模型的腰關節，同樣添加Mouse Look()，Axes的值為Y，修改Mouse Look()

using UnityEngine;
using System.Collections;

/// MouseLook rotates the transform based on the mouse delta.
/// Minimum and Maximum values can be used to constrain the possible rotation

/// To make an FPS style character:
/// - Create a capsule.
/// - Add the MouseLook script to the capsule.
///   -> Set the mouse look to use LookX. (You want to only turn character but not tilt it)
/// - Add FPSInputController script to the capsule
///   -> A CharacterMotor and a CharacterController component will be automatically added.

/// - Create a camera. Make the camera a child of the capsule. Reset it's transform.
/// - Add a MouseLook script to the camera.
///   -> Set the mouse look to use LookY. (You want the camera to tilt up and down like a head. The character already turns.)
[AddComponentMenu("Camera-Control/Mouse Look")]
public class MouseLook : MonoBehaviour {

    public enum RotationAxes { MouseXAndY = 0, MouseX = 1, MouseY = 2 }
    public RotationAxes axes = RotationAxes.MouseXAndY;
    public float sensitivityX = 15F;
    public float sensitivityY = 15F;

    public float minimumX = -360F;
    public float maximumX = 360F;

    public float minimumY = -60F;
    public float maximumY = 60F;

    private Vector3 eulerAngles;

    float rotationY = 0F;

    void LateUpdate ()
    {
        if (axes == RotationAxes.MouseXAndY)
        {
            float rotationX = transform.localEulerAngles.y + Input.GetAxis("Mouse X") * sensitivityX;
            
            rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
            rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);
            
            transform.localEulerAngles = new Vector3(-rotationY, rotationX, 0);
        }
        else if (axes == RotationAxes.MouseX)
        {
            transform.Rotate(0, Input.GetAxis("Mouse X") * sensitivityX, 0);
        }
        else
        {
            rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
            rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);
            //----------********使Z軸旋轉相應的鼠標偏移********----------//
            transform.localEulerAngles = new Vector3(eulerAngles.x,eulerAngles.y,eulerAngles.z + rotationY);
        }
    }
    
    void Start ()
    {
        // Make the rigid body not change rotation
        if (GetComponent<Rigidbody>())
            GetComponent<Rigidbody>().freezeRotation = true;
        //----------********獲得初始的旋轉********----------//
        eulerAngles = transform.localEulerAngles;
    }
}

　　上面代碼中，值得注意的是LateUpdate()，原始的為Update()，因為模型默認會有動畫在不停播放，

那么播放動畫的Update()也會調用模型全身的骨骼，那么就會產生沖突，也就使腰部無法上下旋轉。

所以將Update()改為LateUpdate()，后於動畫播放的調用，即可。

　　此時就可以將Main camera添加在模型腰部組件下

　

模型的左右旋轉、觀察上下的視野就完成了。