using System.Collections;
using System.Collections.Generic;
using UnityEngine;/// <summary>
/// 单个Piece的控制器
/// </summary>
public class PieceControl : MonoBehaviour
{/// <summary>/// 正确的位置 成功后不再移动/// </summary>private Vector3 mFinishedPos = Vector3.zero;/// <summary>/// 初始随机的错误位置/// </summary>private Vector3 mStartPos = Vector3.zero;private Camera mGameCamera = null;private GameObject mCameraObject = null;private PieceState mNowState = PieceState.None;private Vector3 mOffsetVec3 = Vector3.zero;/// <summary>/// 已经选中了这个对象/// </summary>private bool mIsClickObject = false;/// <summary>/// 鼠标是否按下/// </summary>private bool mIsMouseDown = false;private Vector3 oldInput = Vector3.zero;// Use this for initializationvoid Start(){mCameraObject = GameObject.FindGameObjectWithTag("MainCamera");mGameCamera = mCameraObject.GetComponent<Camera>();}void Update(){if (mIsMouseDown){DragingRefreshPos();}}// 按下鼠标按键时 void OnMouseDown(){this.mIsMouseDown = true;Debug.LogError("Down:"+this.name);GetBeginDownOffset();}// 松开鼠标按键时void OnMouseUp(){Debug.LogError("Up" + this.name);this.mIsMouseDown = false;}/// <summary>/// 获取刚拖动object时鼠标交点和object中心的偏移/// </summary>private void GetBeginDownOffset(){Vector3 rejectPos = Vector3.zero;if (GetClickProjectPos(ref rejectPos, Input.mousePosition)){mOffsetVec3 = transform.position - rejectPos;mIsClickObject = true;}}/// <summary>/// 根据GameObject和mouse的相对位置/// 每帧刷新拖动的位置/// </summary>private void DragingRefreshPos(){if (mIsClickObject){Vector3 rejectPos = Vector3.zero;if (GetClickProjectPos(ref rejectPos, Input.mousePosition)){transform.position = mOffsetVec3 + rejectPos;}}}/// <summary>/// 获取交点坐标/// 当鼠标射线和大plane相交/// </summary>/// <returns></returns>private bool GetClickProjectPos(ref Vector3 click3dPos, Vector3 inputPos){Ray ray = mGameCamera.ScreenPointToRay(inputPos);//   Debug.LogError("GetClickProjectPos oldInput:" + oldInput + "  inputpos:" + inputPos);oldInput = inputPos;Plane plane = new Plane(Vector3.forward, new Vector3(0.0f, this.transform.position.y, 0.0f));float rayDepth;if(plane.Raycast(ray,out rayDepth)){click3dPos = ray.origin + ray.direction * rayDepth;return true;}return false;}#region 碎片的状态private enum PieceState{None = -1,Idle = 0,Draging = 2,Finished = 3,Restart = 4,Snapping = 5//吸附过程中
    }#endregion}