新寻路导出方式

Assets/src/PolygonNavMeshWindow.cs

@@ -0,0 +1,226 @@
+using UnityEngine;
+using UnityEditor;
+using UnityEditor.SceneManagement;
+using System.IO;
+using System.Text;
+
+/// <summary>
+/// 导出navmesh寻路层
+/// </summary>
+public class PolygonNavMeshWindow : EditorWindow
+{
+    private int mapID;  //地图id
+    private GameObject pathMesh;    //寻路网格对象
+
+    //地图坐标范围
+    public int startX=0;
+    public int startZ=0;
+    public int endX=300;
+    public int endZ=300;
+
+    [MenuItem("地图/多边形地图")]
+    static void ShowToolWindow()
+    {
+        Rect rect = new Rect(0, 0, 500, 400);
+        PolygonNavMeshWindow window = (PolygonNavMeshWindow)EditorWindow.GetWindowWithRect(typeof(PolygonNavMeshWindow), rect, true, "多边形寻路数据生成");
+        window.Show();
+    }
+
+
+    public void Show()
+    {
+        base.Show();
+        Init();
+    }
+
+    /// <summary>
+    /// 初始化
+    /// </summary>
+    public void Init()
+    {
+        try
+        {
+            ClearTemp();
+            string secenName=EditorSceneManager.GetActiveScene().name.Trim();
+            char[] keys = { '_' };
+            mapID = int.Parse(secenName.Split('_')[0]);
+
+            //寻路层先根据标记查找，如果失败根据名称
+            pathMesh= GameObject.FindGameObjectWithTag("terrain");
+            if (pathMesh == null)
+            {
+                pathMesh = GameObject.Find("model_xzm_" + mapID);
+            }
+            if (pathMesh == null)
+            {
+                Debug.LogError("寻路层找不到，请确定tag设为terrain或名称设为model_xzm_地图id");
+                Close();
+                return;
+            }
+        }
+        catch(System.Exception)
+        {
+            Close();
+        }
+    }
+
+    private void OnDestroy()
+    {
+        mapID = 0;
+        pathMesh = null;
+    }
+
+    /// <summary>
+    /// 绘制工具面板
+    /// </summary>
+    private void OnGUI()
+    {
+        EditorGUILayout.LabelField("1.寻路层设置标记为terrain或名称为model_xzm_地图id");
+        EditorGUILayout.LabelField("2.导出数据请刚好圈住寻路层");
+        EditorGUILayout.Separator();
+        EditorGUILayout.LabelField("地图ID：" + mapID);
+        startX = EditorGUILayout.IntField("起始X",startX);
+        startZ = EditorGUILayout.IntField("起始Z", startZ);
+        endX = EditorGUILayout.IntField("结束X", endX);
+        endZ = EditorGUILayout.IntField("结束Z", endZ);
+        EditorGUILayout.LabelField("宽度：" + (endX - startX));
+        EditorGUILayout.LabelField("高度：" + (endZ - startZ));       
+        if (GUILayout.Button("测试大小"))
+        {
+            CreateMapTestMesh();
+        }
+
+        EditorGUILayout.Separator();
+        if (GUILayout.Button("生成服务器数据"))
+        {
+            if (EditorSceneManager.GetActiveScene().name.Contains(mapID.ToString()))
+            {
+                CreatePolyNavMesh();
+            }
+        }
+
+        EditorGUILayout.Separator();
+
+        if (GUILayout.Button("重载配置"))
+        {
+            Init();
+        }
+    }
+
+    /// <summary>
+    /// 创建网格数据
+    /// </summary>
+    private void CreatePolyNavMesh()
+    {
+        UnityEngine.AI.NavMeshTriangulation triangulatedWalkNavMesh = Path();
+        string path = System.Environment.CurrentDirectory.Replace("\\", "/") + "/../Config/Nav_build/";
+        if (!Directory.Exists(path))
+        {
+            Directory.CreateDirectory(path);
+        }
+        StringBuilder sb = new StringBuilder("{");
+        sb.Append("\"mapID\":").Append(mapID);
+        sb.Append(",\"startX\":").Append(startX).Append(",\"startZ\":").Append(startZ);
+        sb.Append(",\"endX\":").Append(endX).Append(",\"endZ\":").Append(endZ);
+        string filename = path + mapID + ".navmesh";
+
+        string data = "";
+        data = PathMeshToString(triangulatedWalkNavMesh);
+        sb.Append(",").Append(data);
+        sb.Append("}");
+        MeshToFile(filename, sb.ToString());
+    }
+
+    /// <summary>
+    /// 清除临时对象
+    /// </summary>
+    public void ClearTemp()
+    {
+        GameObject mapTest=GameObject.Find("MapTest");
+        if (mapTest != null)
+        {
+            Object.DestroyImmediate(mapTest);
+        }
+    }
+
+    /// <summary>
+    /// 创建测试网格
+    /// </summary>
+    private void CreateMapTestMesh()
+    {
+        GameObject ob= GameObject.Find("MapTest");
+        if (ob == null)
+        {
+            ob= new GameObject("MapTest");
+            ob.AddComponent<MeshFilter>();//网格
+            ob.AddComponent<MeshRenderer>();//网格渲染器  
+
+        }
+        Mesh mesh = new Mesh();
+        mesh.vertices = new Vector3[]
+        {
+            new Vector3(startX, 0, startZ),
+            new Vector3(startX, 0, endZ+startZ),
+            new Vector3(endX+startX, 0, endZ+startZ),
+            new Vector3(endX+startX, 0, startZ)
+        };
+        mesh.triangles = new int[] { 0, 1, 2, 0, 2, 3 };
+        ob.GetComponent<MeshFilter>().sharedMesh = mesh;
+    }
+
+    /// <summary>
+    /// 计算行走层三角网格
+    /// </summary>
+    /// <returns></returns>
+    private UnityEngine.AI.NavMeshTriangulation Path()
+    {
+        ClearTemp();
+        pathMesh.GetComponent<Renderer>().enabled = true;
+        UnityEditor.AI.NavMeshBuilder.ClearAllNavMeshes();
+        UnityEditor.AI.NavMeshBuilder.BuildNavMesh();
+        UnityEngine.AI.NavMeshTriangulation triangulatedNavMesh = UnityEngine.AI.NavMesh.CalculateTriangulation();
+
+
+        return triangulatedNavMesh;
+    }
+
+    /// <summary>
+    /// 寻路数据转换为字符串
+    /// </summary>
+    /// <param name="mesh"></param>
+    /// <returns></returns>
+    private string PathMeshToString(UnityEngine.AI.NavMeshTriangulation mesh)
+    {
+        if (mesh.indices.Length < 1)
+        {
+            return "";
+        }
+        StringBuilder sb = new StringBuilder();
+        sb.Append( "\"pathTriangles\":[");
+        for (int i = 0; i < mesh.indices.Length; i++)
+        {
+            sb.Append(mesh.indices[i]).Append(",");
+        }
+        sb.Length--;
+        sb.Append("],");
+
+        sb.Append("\"pathVertices\":[");
+        for (int i = 0; i < mesh.vertices.Length; i++)
+        {
+            Vector3 v = mesh.vertices[i];
+
+            sb.Append("{\"x\":").Append(v.x).Append(",\"y\":").Append(v.y).Append(",\"z\":").Append(v.z).Append("},");
+        }
+        sb.Length--;
+        sb.Append("]");
+        return sb.ToString();
+    }
+
+    static void MeshToFile(string filename, string meshData)
+    {
+        using (StreamWriter sw = new StreamWriter(filename))
+        {
+            sw.Write(meshData);
+        }
+    }
+}