提示Object reference not set to an instance of an object。未將對象引用設(shè)置到對象的實例 怎么搞啊
using UnityEngine;
using System.Collections;
public class Player : MonoBehaviour
{
public ?GameObject ? mClickEffectPrefab;
public ?GameObject ? mClickEffect;
public float walkSpeed = 2f;
public Light light;
public MovementMotor movement;
private Vector3[] mPath;
private bool bWalking = false;
private int mPathIndex = 0;
// Use this for initialization
void Start ()
{
GameObject.Find ("Main Camera").GetComponent<SceneCamera> ().player = this.gameObject;
}
// Update is called once per frame
void Update ()
{
// Debug.Log ("Horizontal value: " + Input.GetAxis ("Horizontal"));
Vector3 direction = Input.GetAxis ("Horizontal") * transform.right +?
Input.GetAxis ("Vertical") * transform.forward;
//movement.movementDirection = direction.normalized;
// GetComponent<Rigidbody> ().AddForce (direction.normalized * walkSpeed, ForceMode.Acceleration);
transform.position = transform.position +?
walkSpeed * direction * Time.deltaTime ;
WalkForward ();
return;
if (bWalking) {
bWalking = Walking ();
} else {
}
}
public void WalkTo (Vector3 pos, bool withClickEffect = true)
{
if ((this.transform.position - pos).magnitude < 0.001f) {
return;
}
Vector3[] corners = CalcPathCorners (this.transform.position, pos);
if (corners.Length >= 2) {
bWalking = true;
mPath = corners;
bWalking = true;
// Animation anim = GetComponent<Animation> ();
// anim.CrossFade ("run_forward", 0.3f);
mPathIndex = 0;
transform.position = mPath [0];
if (mClickEffect != null && withClickEffect) {
mClickEffect.SetActive (true);
pos.y += 0.5f;
mClickEffect.transform.position = pos;
Invoke ("HideClickEffect", 1.5f);
}
}
}
private void HideClickEffect ()
{
if (mClickEffect != null) {
mClickEffect.SetActive (false);
}
}
private bool Walking ()
{
bool re = true;
Vector3 curSegSrc = mPath [mPathIndex];
Vector3 curSegDst = mPath [mPathIndex + 1];
Vector3 curPos = transform.position;
Vector3 normalDir = (curSegDst - curSegSrc);
normalDir.Normalize ();
curPos += (normalDir * walkSpeed * Time.deltaTime);
float over = (curPos - curSegSrc).magnitude - (curSegDst - curSegSrc).magnitude;
if (over > 0) {
mPathIndex ++;
if (mPathIndex > mPath.Length - 2) {
curPos = mPath [mPath.Length - 1];
transform.position = curPos;
re = false;
Animation anim = GetComponent<Animation> ();
// anim.CrossFade ("idle", 0.3f);
} else {
curSegSrc = mPath [mPathIndex];
curSegDst = mPath [mPathIndex + 1];
normalDir = (curSegDst - curSegSrc);
normalDir.Normalize ();
curPos = curSegSrc + normalDir * over;
transform.position = curPos;
}
} else {
transform.position = curPos;
}
return re;
}
Vector3[] CalcPathCorners (Vector3 src, Vector3 dst)
{
Vector3[] corners = null;
NavMeshPath path = new NavMeshPath ();
//if (NavMesh.CalculatePath(src, dst, -1, path)){
if (false) {
corners = path.corners;
} else {
corners = new Vector3[2]{src, dst};
}
return corners;
}
void WalkForward()
{
transform.position = transform.position + walkSpeed * transform.forward * Time.deltaTime ;
}
}
2015-12-23
不好意思，看錯了。這個是error。
如果已在Inspector中設(shè)置了Camera的Player，可void Start ()中的效果相同的
“GameObject.Find ("Main Camera").GetComponent<SceneCamera> ().player = this.gameObject;”可以直接刪除掉。
如果想在腳本中設(shè)置Camera跟隨Player的效果，親測了兩個方法：
（1）將“GameObject.Find ("Main Camera").GetComponent<SceneCamera> ().player = this.gameObject;”移至void Awake（）方法中
（2）將“GameObject.Find ("Main Camera").GetComponent<SceneCamera> ().player = this.gameObject;”分解成
“GameObject MainCamera;
MainCamera=GameObject.Find("Main Camera");
MainCamera.getComponent<SceneCamera>().player=this.gameObject;
”
個人推測原因：某處用到了還未來得及初始化的對象，與實現(xiàn)函數(shù)的時間順序有關(guān)。
方法原理：
（1）Awake（）是場景啟動時，MonoBehavior創(chuàng)建后，立刻調(diào)用的函數(shù)，所以不會產(chǎn)生來不及設(shè)置實例對象的情
況。
（2）= =咳咳，不知道為什么這樣就行地通了，麻煩知道的人告知一下。
若解釋的不對，希望能指出。謝謝
2015-12-22
這個只是因程序未完善出現(xiàn)的Warning，不影響運行，可以忽略