1  //定制预置体 2     //要求：1,模型面向U3D的Z轴正向(由MAX导出时是面向U3D的X负向的) 3     //2,增加一些常用挂点，3增加一个圆形阴影片，4，添加包围盒 4     //根据这些要求制作预置休 5     static GameObject CreateCustomPrefab(string fbxResPath, string saveDir, string saveName) 6     { 7         Directory.CreateDirectory(saveDir); 8         var fbx = AssetDatabase.LoadAssetAtPath(fbxResPath, typeof(GameObject)) as GameObject; 9         if (fbx == null)10         {11             Debug.LogError("加载FBX失败:" + fbxResPath);12             return null;13         }14 15         //往预置体中添加阴影，挂点等。16         //注意：必须先将FBX和阴影都实例化出来，设置好层次关系，然后保存为预置体17 18         //19         //制作出的预置体需要对模型朝向进行调整-旋转90度后让它刚好面向U3D的Z轴正向20         //这个旋转不能施加到预置体的根上，因为进入游戏后，这个值将被人物走路的朝向值覆盖21         //同样，旋转操作不能直接施加到模型的几何体上，因为它们将在骨骼变换中被覆盖22         23         //生成根24         var root = new GameObject(saveName);25 26         //挂上模型27         var fbxgo = GameObject.Instantiate(fbx, root.transform);28         fbxgo.transform.localRotation = Quaternion.Euler(0, 90, 0);//旋转模型，使面向Z轴正向29         fbxgo.name = "Mesh";30 31         //添加阴影32         var shadow = AssetDatabase.LoadAssetAtPath("assets/res/prefabs/char/shadow.prefab", typeof(GameObject)) as GameObject;33         var shadowgo = GameObject.Instantiate(shadow);34         shadowgo.name = "shadow";35         shadowgo.transform.SetParent(root.transform);36 37         //添加包围盒38         var cap = root.AddComponent
     
      ();39         cap.height = GameConst.charCapsuleHeight;40         cap.radius = GameConst.charCapsuleRadius;41         cap.center = new Vector3(0, cap.height / 2 -0.1f, 0);42 43         //添加挂点，注意：这些挂点在未优化的FBX层级中已存在了(由MAX导出时，这些挂点选择与否都会导出，原因不明)44         var fbxDir = Path.GetDirectoryName(fbxResPath);45         var fpath = fbxDir + "/linkpts.txt";46         if (!File.Exists(fpath))47         {48             EditorUtility.DisplayDialog("缺少挂点配置文件", fbxResPath, "ok");49         }50         else51         {52             var sr = new StreamReader(File.OpenRead(fpath), Encoding.ASCII);53             var longStr = sr.ReadToEnd();54             var dats = longStr.Split('\"');55 56             for (var i = 0; i < dats.Length; ++i)57             {58                 if (dats[i] == "" || dats[i] == "\r\n")59                     continue;60                 var subdat = dats[i].Split(' ');61                 var lpt = new GameObject(subdat[0]);62                 63                 //因为模型缩放了，挂点位置也要缩放64                 var fx = GameConst.modelFileScale * float.Parse(subdat[1]);65                 var fy = GameConst.modelFileScale * float.Parse(subdat[2]);66                 var fz = GameConst.modelFileScale * float.Parse(subdat[3]);67 68                 lpt.transform.position = new Vector3(fx, fy, fz);69                 lpt.transform.SetParent(root.transform);70             }71         }72 73         74         var pb = PrefabUtility.CreatePrefab(saveDir + saveName, root);75 76         //删除场景中生成的模型和阴影实例77         GameObject.DestroyImmediate(root);78         GameObject.DestroyImmediate(fbxgo);79         GameObject.DestroyImmediate(shadowgo);80 81         return pb;82     }