unity 一个拼图demo（七巧板）和一个切割demo—2

   前面好久之前只是讲到了七巧板的和切割的原理，这节就讲一下2个demo的主游戏逻辑的代码。先说一下切割demo的逻辑代码，首先我们的准备一个题库，这个题库最好做成Excel表，然后最好直接转成ScriptObject序列化的文件，如果大家有这方面的需要我也可以提供代码，还有一种简单的就是直接由Excel转json，然后通过json读数据这样显然跟家复杂并且比第一种方法慢些。题目的格式得自己去定了，就是Excel表的内容得自己定，例如可能存的是多边形每个角的坐标位置，还有怎么分的问题。贴一下MainSliceGame这个类：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using DG.Tweening;using UnityEngine;public class MainSliceGame:MonoBehaviour{    private SliceMeshMrg _meshManager;    [SerializeField] private int _level;    [SerializeField] private Material mat;    [SerializeField] private Material lineMaterial;    private void Start()    {        _meshManager = new SliceMeshMrg();        _meshManager.ResetLevePath(_level);        _meshManager.Intilized(mat);    }    private Vector3 _preVector3;    private Vector3 _nextVector3;    private Vector3 _tempVector3;    private Vector3 _temp1Vector3;    private List<Vector3> _originList;     private GameObject _knife;    private GameObject _slicePeace;    private void Update()    {        if (Input.GetMouseButtonDown(0))        {            _preVector3 = Camera.main.ScreenToWorldPoint(Input.mousePosition);        }        else if (Input.GetMouseButtonUp(0))        {            _nextVector3 = Camera.main.ScreenToWorldPoint(Input.mousePosition);            if (_knife != null)            {                Destroy(_knife);            }            Vector3 start=new Vector3(_preVector3.x,_preVector3.y,-0.1f);            Vector3 end=new Vector3(_nextVector3.x,_nextVector3.y,-0.1f);            _meshManager.SliceMeshObj(start,end);        }        else if(Input.GetMouseButton(0))        {            _tempVector3 = Camera.main.ScreenToWorldPoint(Input.mousePosition);            float t = Vector3.Dot((_tempVector3 - _preVector3).normalized, (_temp1Vector3 - _preVector3).normalized);            float angle = Mathf.Acos(t)*Mathf.Rad2Deg;            float distance = Vector3.Magnitude(_tempVector3 - _temp1Vector3);            if ((distance > 0.01f || angle > 1f))            {                if (_knife != null)                {                    Destroy(_knife);                }                _knife = _meshManager.CreateLineMeshObj(_preVector3, _tempVector3, lineMaterial);                _knife.transform.position = new Vector3(0, 0, 1f);            }            _temp1Vector3 = _tempVector3;        }    }}

主要的作用就真的只是鼠标输入，及控制切割的部分。这里还有ui，优化都没有做，感觉连个demo都不能算了，只能算是一段小程序。后面那个七巧板爷要用到数据读取，所以建议同意写一个编辑器统一来处理，说不定下个项目还可以用用。

public class GameLayer:InputHandler{    [SerializeField] private RotateTipImage _rotateTipImage;    [SerializeField] private GameObject mainGameObject;    [SerializeField] private Material meshMaterial;    [SerializeField] private Material borderMaterial;    private float scalex;    private float scaley;    private MeshManager _meshManager;    private void Awake()    {        Vector3 scale = mainGameObject.transform.localScale;        scalex = scale.x;        scaley = scale.y;        _meshManager=new MeshManager();        _meshManager.ResetLevePath(1);    }    private void Start()    {        _meshManager.Intilized(mainGameObject.transform, meshMaterial, borderMaterial, scalex, scaley);    }    private Sprite _sprite;    protected override void Update()    {       _rotateTipImage.OnUpdate(Time.deltaTime);        base.Update();        if (_meshManager.JudgeGameWin())        {           _sprite = _meshManager.ReIntilizMesh();            _rotateTipImage.TipGameObject.GetComponent<SpriteRenderer>().sprite = _sprite;        }    }    private GameObject _curSegment;    private Vector3 _originVector3;    private GameObject _parentGameObject;    public override void OneTouchMove()    {        Vector3 curveVector3 = Input.GetTouch(0).position;        curveVector3 = Camera.main.ScreenToWorldPoint(curveVector3);                if (_curSegment != null)        {            float z = _parentGameObject.transform.position.z;            if (TouchCount > 1)            {                _curSegment.transform.parent = null;                _parentGameObject.transform.position = new Vector3(curveVector3.x, curveVector3.y, z);                _curSegment.transform.parent = _parentGameObject.transform;            }            _parentGameObject.transform.position = new Vector3(curveVector3.x, curveVector3.y, z);        }    }    public override void OneTouchDown()    {        _curSegment = null;        Vector3 pos = Input.GetTouch(0).position;        _originVector3 = Camera.main.ScreenToWorldPoint(pos);        Ray ray = Camera.main.ScreenPointToRay(pos);        RaycastHit hit;        if (Physics.Raycast(ray, out hit, 100))        {            _curSegment = hit.transform.gameObject;            _originVector3 = hit.point;            _parentGameObject = new GameObject("sd");            _parentGameObject.transform.position = hit.point;            _curSegment.transform.parent = _parentGameObject.transform;        }    }    public override void OneTouchUp()    {        bool b1 = Mathf.Abs(_curSegment.transform.eulerAngles.z) < 5 || Mathf.Abs(_curSegment.transform.eulerAngles.z-360)<5;        bool b2 = Mathf.Abs(_curSegment.transform.position.x) +                  Mathf.Abs(_curSegment.transform.position.y) < 0.5f;        if (b1 && b2 && _curSegment != null)        {            _curSegment.transform.position = new Vector3(0, 0, -0.1f);            _curSegment.transform.eulerAngles = Vector3.zero;            var sd = _curSegment.transform.parent;            _curSegment.transform.parent = null;            Destroy(sd.gameObject);        }    }    private Vector3 _origintouch1Vector3;    private Vector3 _origintouch2Vector3;    private Vector3 _midVector3;    public override void TwoTouchDown()    {              var t1 = Input.GetTouch(0).position;        _origintouch1Vector3 = Camera.main.ScreenToWorldPoint(t1);        var t2 = Input.GetTouch(1).position;        Ray ray = Camera.main.ScreenPointToRay(t2);        RaycastHit hit;        if (Physics.Raycast(ray, out hit, 100))        {            _originVector3 = hit.point;            _origintouch2Vector3 = Camera.main.ScreenToWorldPoint(t2);            _midVector3 = (_origintouch1Vector3 + _origintouch2Vector3) / 2;            float z = _parentGameObject.transform.position.z;            _curSegment.transform.parent = null;            _parentGameObject.transform.position = new Vector3(_midVector3.x, _midVector3.y, z);            _curSegment.transform.parent = _parentGameObject.transform;        }    }    private Vector3 _curtouch1Vector3;    private Vector3 _curtouch2Vector3;    public override void TwoTouchMove()    {        var t2 = Input.GetTouch(1).position;        _curtouch1Vector3 = Camera.main.ScreenToWorldPoint(t2);        var t1 = Input.GetTouch(0).position;        _curtouch2Vector3 = Camera.main.ScreenToWorldPoint(t1);        Vector3 offset2 = (_curtouch2Vector3 - _curtouch1Vector3).normalized;        Vector3 offset1 = (_origintouch2Vector3 - _origintouch1Vector3).normalized;        float value = offset1.x*offset2.y - offset1.y*offset2.x;        float angle = Mathf.Asin(value)*Mathf.Rad2Deg;        _parentGameObject.transform.localEulerAngles=new Vector3(0,0,-angle);    }    public override void TwoTouchUp()    {        OneTouchUp();    }}

GameLayer继承Input，input提供输入操作模板，让gamelayer来重写方法，这里重写的都是一些输入方法，OneTouchMove，OneTouchDown，OneTouchUp，TwoTouchMove，TwoTouchUp所以代码理解起来都比较简单。这里主要难以理解就是网格的方面的数学知识了。最后给出原项目地址：http://pan.baidu.com/s/1hrPVOjE