Fix MaleExplorer setup with shadow material and editor diagnostics.

Improve FBX/prefab import setup, CharacterSpawner, and add M3 inspect/rebuild helpers.

Co-authored-by: Cursor <cursoragent@cursor.com>

AIClient/Assets/Bundles/Characters/MaleExplorer/MaleExplorer.fbx.meta

@@ -5,7 +5,7 @@ ModelImporter:
   internalIDToNameTable: []
   externalObjects: {}
   materials:
-    materialImportMode: 0
+    materialImportMode: 2
     materialName: 0
     materialSearch: 1
     materialLocation: 1
@@ -52,7 +52,7 @@ ModelImporter:
     useFileUnits: 1
     keepQuads: 0
     weldVertices: 1
-    bakeAxisConversion: 0
+    bakeAxisConversion: 1
     preserveHierarchy: 0
     skinWeightsMode: 0
     maxBonesPerVertex: 4
@@ -67,7 +67,7 @@ ModelImporter:
     secondaryUVMinLightmapResolution: 40
     secondaryUVMinObjectScale: 1
     secondaryUVPackMargin: 4
-    useFileScale: 1
+    useFileScale: 0
     strictVertexDataChecks: 0
   tangentSpace:
     normalSmoothAngle: 60

AIClient/Assets/Bundles/Characters/MaleExplorer/MaleExplorer.mat

@@ -14,6 +14,7 @@ Material:
   m_ValidKeywords:
   - _METALLICSPECGLOSSMAP
   - _NORMALMAP
+  - _OCCLUSIONMAP
   m_InvalidKeywords: []
   m_LightmapFlags: 4
   m_EnableInstancingVariants: 0

AIClient/Assets/Bundles/Characters/MaleExplorer/MaleExplorer.prefab

@@ -27,8 +27,8 @@ Transform:
   m_GameObject: {fileID: 4818435621640061303}
   serializedVersion: 2
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 0, y: 0.02, z: 0}
+  m_LocalPosition: {x: 0, y: -0.0000000011313807, z: 0}
-  m_LocalScale: {x: 0.7, y: 0.015, z: 0.7}
+  m_LocalScale: {x: 0.55, y: 0.012, z: 0.55}
   m_ConstrainProportionsScale: 0
   m_Children: []
   m_Father: {fileID: 7751142206369119175}
@@ -50,7 +50,7 @@ MeshRenderer:
   m_GameObject: {fileID: 4818435621640061303}
   m_Enabled: 1
   m_CastShadows: 0
-  m_ReceiveShadows: 1
+  m_ReceiveShadows: 0
   m_DynamicOccludee: 1
   m_StaticShadowCaster: 0
   m_MotionVectors: 1
@@ -61,7 +61,7 @@ MeshRenderer:
   m_RenderingLayerMask: 1
   m_RendererPriority: 0
   m_Materials:
-  - {fileID: 0}
+  - {fileID: 2100000, guid: 6b337463b30a15d4e9f2e50f5690082b, type: 2}
   m_StaticBatchInfo:
     firstSubMesh: 0
     subMeshCount: 0
@@ -93,23 +93,23 @@ PrefabInstance:
     m_Modifications:
     - target: {fileID: -8679921383154817045, guid: 4e7306923b3941041b15fc08a96215f4, type: 3}
       propertyPath: m_LocalScale.x
-      value: 1.6454926
+      value: 1.6463469
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 4e7306923b3941041b15fc08a96215f4, type: 3}
       propertyPath: m_LocalScale.y
-      value: 1.6454926
+      value: 1.6463469
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 4e7306923b3941041b15fc08a96215f4, type: 3}
       propertyPath: m_LocalScale.z
-      value: 1.6454926
+      value: 1.6463469
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 4e7306923b3941041b15fc08a96215f4, type: 3}
       propertyPath: m_LocalPosition.x
-      value: -0
+      value: 0
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 4e7306923b3941041b15fc08a96215f4, type: 3}
       propertyPath: m_LocalPosition.y
-      value: 0
+      value: -0.00093483925
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 4e7306923b3941041b15fc08a96215f4, type: 3}
       propertyPath: m_LocalPosition.z
@@ -117,11 +117,11 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 4e7306923b3941041b15fc08a96215f4, type: 3}
       propertyPath: m_LocalRotation.w
-      value: 0.7071067
+      value: 0.7071068
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 4e7306923b3941041b15fc08a96215f4, type: 3}
       propertyPath: m_LocalRotation.x
-      value: -0.7071068
+      value: 0.7071068
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 4e7306923b3941041b15fc08a96215f4, type: 3}
       propertyPath: m_LocalRotation.y
@@ -129,7 +129,7 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 4e7306923b3941041b15fc08a96215f4, type: 3}
       propertyPath: m_LocalRotation.z
-      value: -0
+      value: 0
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 4e7306923b3941041b15fc08a96215f4, type: 3}
       propertyPath: m_LocalEulerAnglesHint.x

AIClient/Assets/Bundles/Characters/MaleExplorer/MaleExplorer_Shadow.mat

@@ -0,0 +1,133 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!21 &2100000
+Material:
+  serializedVersion: 8
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: MaleExplorer_Shadow
+  m_Shader: {fileID: 4800000, guid: 933532a4fcc9baf4fa0491de14d08ed7, type: 3}
+  m_Parent: {fileID: 0}
+  m_ModifiedSerializedProperties: 0
+  m_ValidKeywords: []
+  m_InvalidKeywords: []
+  m_LightmapFlags: 4
+  m_EnableInstancingVariants: 0
+  m_DoubleSidedGI: 0
+  m_CustomRenderQueue: -1
+  stringTagMap:
+    RenderType: Opaque
+  disabledShaderPasses: []
+  m_LockedProperties: 
+  m_SavedProperties:
+    serializedVersion: 3
+    m_TexEnvs:
+    - _BaseMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _BumpMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailAlbedoMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailMask:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailNormalMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _EmissionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _MainTex:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _MetallicGlossMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _OcclusionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _ParallaxMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _SpecGlossMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - unity_Lightmaps:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - unity_LightmapsInd:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - unity_ShadowMasks:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    m_Ints: []
+    m_Floats:
+    - _AlphaClip: 0
+    - _AlphaToMask: 0
+    - _Blend: 0
+    - _BlendModePreserveSpecular: 1
+    - _BumpScale: 1
+    - _ClearCoatMask: 0
+    - _ClearCoatSmoothness: 0
+    - _Cull: 2
+    - _Cutoff: 0.5
+    - _DetailAlbedoMapScale: 1
+    - _DetailNormalMapScale: 1
+    - _DstBlend: 0
+    - _DstBlendAlpha: 0
+    - _EnvironmentReflections: 1
+    - _GlossMapScale: 0
+    - _Glossiness: 0
+    - _GlossyReflections: 0
+    - _Metallic: 0
+    - _OcclusionStrength: 1
+    - _Parallax: 0.005
+    - _QueueOffset: 0
+    - _ReceiveShadows: 1
+    - _Smoothness: 0.5
+    - _SmoothnessTextureChannel: 0
+    - _SpecularHighlights: 1
+    - _SrcBlend: 1
+    - _SrcBlendAlpha: 1
+    - _Surface: 0
+    - _WorkflowMode: 1
+    - _ZWrite: 1
+    m_Colors:
+    - _BaseColor: {r: 0.12, g: 0.12, b: 0.14, a: 1}
+    - _Color: {r: 0.11999995, g: 0.11999995, b: 0.13999996, a: 1}
+    - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}
+    - _SpecColor: {r: 0.19999996, g: 0.19999996, b: 0.19999996, a: 1}
+  m_BuildTextureStacks: []
+--- !u!114 &323412783105867235
+MonoBehaviour:
+  m_ObjectHideFlags: 11
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: d0353a89b1f911e48b9e16bdc9f2e058, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  version: 7

AIClient/Assets/Bundles/Characters/MaleExplorer/MaleExplorer_Shadow.mat.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 6b337463b30a15d4e9f2e50f5690082b
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 2100000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

AIClient/Assets/Editor/M3/FixAndDiagnoseMaleExplorer.cs

@@ -0,0 +1,55 @@
+using System.Globalization;
+using System.Text;
+using UnityEditor;
+using UnityEngine;
+
+public static class FixAndDiagnoseMaleExplorer
+{
+    public static string Diagnose()
+    {
+        const string fbx = "Assets/Bundles/Characters/MaleExplorer/MaleExplorer.fbx";
+        var sb = new StringBuilder();
+        var importer = AssetImporter.GetAtPath(fbx) as ModelImporter;
+        if (importer != null)
+        {
+            sb.AppendLine($"globalScale={importer.globalScale} useFileScale={importer.useFileScale} " +
+                          $"bakeAxisConversion={importer.bakeAxisConversion} " +
+                          $"meshCompression={importer.meshCompression}");
+        }
+
+        foreach (var obj in AssetDatabase.LoadAllAssetsAtPath(fbx))
+        {
+            if (obj is not Mesh mesh) continue;
+            var vs = mesh.vertices;
+            var min = vs[0];
+            var max = vs[0];
+            for (var i = 1; i < vs.Length; i++)
+            {
+                min = Vector3.Min(min, vs[i]);
+                max = Vector3.Max(max, vs[i]);
+            }
+            var size = max - min;
+            sb.AppendLine(string.Format(CultureInfo.InvariantCulture,
+                "mesh={0} verts={1} min=({2:F6},{3:F6},{4:F6}) max=({5:F6},{6:F6},{7:F6}) size=({8:F6},{9:F6},{10:F6})",
+                mesh.name, vs.Length, min.x, min.y, min.z, max.x, max.y, max.z, size.x, size.y, size.z));
+        }
+        return sb.ToString();
+    }
+
+    public static string FixImportAndPrefab()
+    {
+        const string fbx = "Assets/Bundles/Characters/MaleExplorer/MaleExplorer.fbx";
+        var importer = AssetImporter.GetAtPath(fbx) as ModelImporter;
+        if (importer == null) return "no importer";
+
+        // Blender 已按米导出时，关掉 Unity 默认 0.01 厘米换算
+        importer.globalScale = 1f;
+        importer.useFileScale = false;
+        importer.bakeAxisConversion = true;
+        importer.materialImportMode = ModelImporterMaterialImportMode.None;
+        importer.SaveAndReimport();
+
+        // 重建 Prefab
+        return SetupM3Character.SetupAll() + " | " + Diagnose();
+    }
+}

AIClient/Assets/Editor/M3/FixAndDiagnoseMaleExplorer.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: b2cbb60d5fbecac4e8270e0acc5afba7
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

AIClient/Assets/Editor/M3/InspectMaleExplorer.cs

@@ -0,0 +1,52 @@
+using System.Text;
+using UnityEditor;
+using UnityEngine;
+
+public static class InspectMaleExplorer
+{
+    public static string Execute()
+    {
+        const string path = "Assets/Bundles/Characters/MaleExplorer/MaleExplorer.prefab";
+        var prefab = AssetDatabase.LoadAssetAtPath<GameObject>(path);
+        if (prefab == null) return "prefab null";
+
+        var go = (GameObject)PrefabUtility.InstantiatePrefab(prefab);
+        go.name = "MaleExplorer_Inspect";
+        go.transform.position = new Vector3(0f, 0f, 2.5f);
+
+        var sb = new StringBuilder();
+        sb.AppendLine($"root scale={go.transform.localScale} pos={go.transform.position}");
+        foreach (var r in go.GetComponentsInChildren<Renderer>(true))
+        {
+            var mat = r.sharedMaterial;
+            sb.AppendLine(
+                $"renderer={r.GetType().Name} path={GetPath(r.transform)} enabled={r.enabled} " +
+                $"bounds={r.bounds} mat={(mat ? mat.name : "null")} " +
+                $"shader={(mat && mat.shader ? mat.shader.name : "null")}");
+        }
+        foreach (var mf in go.GetComponentsInChildren<MeshFilter>(true))
+        {
+            sb.AppendLine(
+                $"meshFilter={GetPath(mf.transform)} mesh={(mf.sharedMesh ? mf.sharedMesh.name : "null")} " +
+                $"verts={(mf.sharedMesh ? mf.sharedMesh.vertexCount : 0)}");
+        }
+        foreach (var smr in go.GetComponentsInChildren<SkinnedMeshRenderer>(true))
+        {
+            sb.AppendLine(
+                $"skinned={GetPath(smr.transform)} mesh={(smr.sharedMesh ? smr.sharedMesh.name : "null")} " +
+                $"verts={(smr.sharedMesh ? smr.sharedMesh.vertexCount : 0)}");
+        }
+        return sb.ToString();
+    }
+
+    static string GetPath(Transform t)
+    {
+        var p = t.name;
+        while (t.parent != null)
+        {
+            t = t.parent;
+            p = t.name + "/" + p;
+        }
+        return p;
+    }
+}

AIClient/Assets/Editor/M3/InspectMaleExplorer.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 67665e6ccf39f084db66b0fcb9db296c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

AIClient/Assets/Editor/M3/InspectMaleExplorerFinal.cs

@@ -0,0 +1,31 @@
+using System.Globalization;
+using System.Text;
+using UnityEditor;
+using UnityEngine;
+
+public static class InspectMaleExplorerFinal
+{
+    public static string Execute()
+    {
+        const string path = "Assets/Bundles/Characters/MaleExplorer/MaleExplorer.prefab";
+        var prefab = AssetDatabase.LoadAssetAtPath<GameObject>(path);
+        var go = (GameObject)PrefabUtility.InstantiatePrefab(prefab);
+        go.transform.position = new Vector3(0f, go.transform.position.y, 2.5f);
+        var sb = new StringBuilder();
+        sb.AppendLine(string.Format(CultureInfo.InvariantCulture,
+            "root pos={0} rot={1} scale={2}",
+            go.transform.position, go.transform.eulerAngles, go.transform.localScale));
+        foreach (var r in go.GetComponentsInChildren<Renderer>(true))
+        {
+            if (r.name == "ShadowDisc") continue;
+            var b = r.bounds;
+            sb.AppendLine(string.Format(CultureInfo.InvariantCulture,
+                "{0} bounds center=({1:F3},{2:F3},{3:F3}) size=({4:F3},{5:F3},{6:F3}) mat={7} shader={8}",
+                r.name, b.center.x, b.center.y, b.center.z, b.size.x, b.size.y, b.size.z,
+                r.sharedMaterial ? r.sharedMaterial.name : "null",
+                r.sharedMaterial && r.sharedMaterial.shader ? r.sharedMaterial.shader.name : "null"));
+        }
+        Object.DestroyImmediate(go);
+        return sb.ToString();
+    }
+}

AIClient/Assets/Editor/M3/InspectMaleExplorerFinal.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 738db76e9c64f9f4e8098e561a800597
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

AIClient/Assets/Editor/M3/InspectMaleExplorerMesh.cs

@@ -0,0 +1,47 @@
+using System.Text;
+using UnityEditor;
+using UnityEngine;
+
+public static class InspectMaleExplorerMesh
+{
+    public static string Execute()
+    {
+        const string fbx = "Assets/Bundles/Characters/MaleExplorer/MaleExplorer.fbx";
+        const string prefabPath = "Assets/Bundles/Characters/MaleExplorer/MaleExplorer.prefab";
+        var sb = new StringBuilder();
+
+        foreach (var obj in AssetDatabase.LoadAllAssetsAtPath(fbx))
+        {
+            if (obj is Mesh mesh)
+            {
+                sb.AppendLine(
+                    $"assetMesh={mesh.name} verts={mesh.vertexCount} bounds={mesh.bounds} " +
+                    $"tris={mesh.triangles.Length / 3}");
+            }
+        }
+
+        var prefab = AssetDatabase.LoadAssetAtPath<GameObject>(prefabPath);
+        var go = (GameObject)PrefabUtility.InstantiatePrefab(prefab);
+        go.transform.position = Vector3.zero;
+        go.transform.localScale = Vector3.one;
+        foreach (var mf in go.GetComponentsInChildren<MeshFilter>(true))
+        {
+            var m = mf.sharedMesh;
+            if (m == null) continue;
+            sb.AppendLine($"filter={mf.name} localScale={mf.transform.lossyScale} meshBounds={m.bounds} worldBounds={mf.GetComponent<Renderer>().bounds}");
+            // sample a few verts
+            var vs = m.vertices;
+            var min = vs[0];
+            var max = vs[0];
+            for (int i = 1; i < vs.Length; i++)
+            {
+                min = Vector3.Min(min, vs[i]);
+                max = Vector3.Max(max, vs[i]);
+            }
+            sb.AppendLine($"vertMin={min} vertMax={max} size={max - min}");
+        }
+
+        Object.DestroyImmediate(go);
+        return sb.ToString();
+    }
+}

AIClient/Assets/Editor/M3/InspectMaleExplorerMesh.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 31f77e98524d70941a004800305764f6
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

AIClient/Assets/Editor/M3/RebuildMaleExplorerNow.cs

@@ -0,0 +1,15 @@
+using UnityEditor;
+using UnityEngine;
+
+public static class RebuildMaleExplorerNow
+{
+    public static string Execute()
+    {
+        foreach (var go in Object.FindObjectsOfType<GameObject>())
+        {
+            if (go != null && go.name.Contains("MaleExplorer"))
+                Object.DestroyImmediate(go);
+        }
+        return SetupM3Character.SetupAll();
+    }
+}

AIClient/Assets/Editor/M3/RebuildMaleExplorerNow.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: f063866d20ac6894f9667aad85ef937a
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

AIClient/Assets/Editor/M3/SetupM3Character.cs

@@ -64,6 +64,10 @@ public static class SetupM3Character
             var model = AssetImporter.GetAtPath(FbxPath) as ModelImporter;
             if (model != null)
             {
+                // Blender 按米导出；FBX 文件单位常带 0.01，useFileScale 会把角色缩成 ~1cm
+                model.globalScale = 1f;
+                model.useFileScale = false;
+                model.bakeAxisConversion = true;
                 // XPbr：保留 externalObjects 材质重映射；无 .mat 时再 None
                 model.materialImportMode = File.Exists(MatPath)
                     ? ModelImporterMaterialImportMode.ImportViaMaterialDescription
@@ -154,36 +158,93 @@ public static class SetupM3Character
         foreach (var renderer in instance.GetComponentsInChildren<Renderer>())
             renderer.sharedMaterial = mat;
 
-        // 落地参考盘
+        // Blender/混元 FBX：身高常在本地 Z。转到 Unity Y-up，并面向 -Z（相机常见朝向）。
-        var ground = GameObject.CreatePrimitive(PrimitiveType.Cylinder);
+        UprightBlenderMesh(instance);
-        ground.name = "ShadowDisc";
-        ground.transform.SetParent(instance.transform, false);
-        ground.transform.localPosition = new Vector3(0f, 0.02f, 0f);
-        ground.transform.localScale = new Vector3(0.7f, 0.015f, 0.7f);
-        Object.DestroyImmediate(ground.GetComponent<Collider>());
-        var gMat = new Material(urpLit != null ? urpLit : shader);
-        if (gMat.HasProperty("_BaseColor")) gMat.SetColor("_BaseColor", new Color(0.12f, 0.12f, 0.14f, 1f));
-        if (gMat.HasProperty("_Color")) gMat.color = new Color(0.12f, 0.12f, 0.14f, 1f);
-        ground.GetComponent<MeshRenderer>().sharedMaterial = gMat;
-        ground.GetComponent<MeshRenderer>().shadowCastingMode = ShadowCastingMode.Off;
 
-        // 粗略归一化身高约 1.8m
+        // 落地参考盘（扶正定标后再放）
-        var bounds = new Bounds(instance.transform.position, Vector3.zero);
+        PlaceShadowDisc(instance, urpLit != null ? urpLit : shader);
-        var renderers = instance.GetComponentsInChildren<Renderer>();
-        foreach (var r in renderers)
-        {
-            if (r.name == "ShadowDisc") continue;
-            bounds.Encapsulate(r.bounds);
-        }
-        if (bounds.size.y > 0.01f)
-        {
-            var scale = 1.8f / bounds.size.y;
-            instance.transform.localScale = Vector3.one * scale;
-        }
 
         PrefabUtility.SaveAsPrefabAsset(instance, PrefabPath);
         Object.DestroyImmediate(instance);
-        return PrefabPath;
+        return PrefabPath + (useXpbr ? " (XPbr)" : " (URP Lit)");
+    }
+
+    static void UprightBlenderMesh(GameObject instance)
+    {
+        instance.transform.localPosition = Vector3.zero;
+        instance.transform.localScale = Vector3.one;
+        // 混元/Blender：头在 +Z。Unity 用 +90°X 扶正；Y=0 使正面朝向相机（-Z）。
+        instance.transform.localRotation = Quaternion.Euler(90f, 0f, 0f);
+
+        var bounds = EncapsulateMeshBounds(instance);
+        if (bounds.size.y < 0.001f)
+        {
+            if (bounds.size.z >= bounds.size.x)
+                instance.transform.localRotation = Quaternion.Euler(90f, 0f, 0f);
+            else
+                instance.transform.localRotation = Quaternion.Euler(0f, 0f, 90f);
+            bounds = EncapsulateMeshBounds(instance);
+        }
+
+        if (bounds.size.y > 0.001f)
+            instance.transform.localScale = Vector3.one * (1.8f / bounds.size.y);
+
+        bounds = EncapsulateMeshBounds(instance);
+        instance.transform.position = new Vector3(0f, -bounds.min.y, 0f);
+    }
+
+    static Bounds EncapsulateMeshBounds(GameObject root)
+    {
+        Bounds bounds = default;
+        var has = false;
+        foreach (var r in root.GetComponentsInChildren<Renderer>())
+        {
+            if (r.name == "ShadowDisc") continue;
+            if (!has)
+            {
+                bounds = r.bounds;
+                has = true;
+            }
+            else bounds.Encapsulate(r.bounds);
+        }
+        return has ? bounds : new Bounds(root.transform.position, Vector3.one * 0.01f);
+    }
+
+    static void PlaceShadowDisc(GameObject instance, Shader shader)
+    {
+        var existing = instance.transform.Find("ShadowDisc");
+        if (existing != null)
+            Object.DestroyImmediate(existing.gameObject);
+
+        const string shadowMatPath = ActorRoot + "/" + ActorName + "_Shadow.mat";
+        var gMat = AssetDatabase.LoadAssetAtPath<Material>(shadowMatPath);
+        if (gMat == null)
+        {
+            gMat = new Material(shader);
+            AssetDatabase.CreateAsset(gMat, shadowMatPath);
+        }
+        else gMat.shader = shader;
+        if (gMat.HasProperty("_BaseColor")) gMat.SetColor("_BaseColor", new Color(0.12f, 0.12f, 0.14f, 1f));
+        if (gMat.HasProperty("_Color")) gMat.color = new Color(0.12f, 0.12f, 0.14f, 1f);
+        // 不透明，避免 URP 透明洋红
+        if (gMat.HasProperty("_Surface")) gMat.SetFloat("_Surface", 0f);
+        gMat.DisableKeyword("_SURFACE_TYPE_TRANSPARENT");
+        gMat.renderQueue = -1;
+        EditorUtility.SetDirty(gMat);
+
+        var ground = GameObject.CreatePrimitive(PrimitiveType.Cylinder);
+        ground.name = "ShadowDisc";
+        ground.transform.SetParent(instance.transform, false);
+        var bounds = EncapsulateMeshBounds(instance);
+        var localY = instance.transform.InverseTransformPoint(new Vector3(0f, bounds.min.y + 0.02f, 0f)).y;
+        ground.transform.localPosition = new Vector3(0f, localY, 0f);
+        ground.transform.localRotation = Quaternion.identity;
+        ground.transform.localScale = new Vector3(0.55f, 0.012f, 0.55f);
+        Object.DestroyImmediate(ground.GetComponent<Collider>());
+        var mr = ground.GetComponent<MeshRenderer>();
+        mr.sharedMaterial = gMat;
+        mr.shadowCastingMode = ShadowCastingMode.Off;
+        mr.receiveShadows = false;
     }
 
     static string EnsureBillboardPrefab()

AIClient/Assets/HotUpdate/Scripts/CharacterSpawner.cs

@@ -67,26 +67,26 @@ namespace HotUpdate
 
             _instance = Instantiate(prefab);
             _instance.name = "MaleExplorer_Runtime";
-            _instance.transform.position = new Vector3(0f, 0f, 2.5f);
+            var y = _instance.transform.position.y;
+            _instance.transform.position = new Vector3(0f, y, 2.5f);
             DontDestroyOnLoad(_instance);
 
-            // 简易朝向相机
+            // 仅对概念图 Billboard 子节点做朝向；真 3D 网格不要转，否则会拧成纸片
-            var billboard = _instance.GetComponentInChildren<MeshRenderer>();
+            var billboardTf = _instance.transform.Find("Billboard");
-            if (billboard != null && Camera.main != null)
+            if (billboardTf != null && Camera.main != null)
             {
-                var t = billboard.transform;
                 var cam = Camera.main.transform;
-                var dir = cam.position - t.position;
+                var dir = cam.position - billboardTf.position;
                 dir.y = 0f;
                 if (dir.sqrMagnitude > 0.001f)
-                    t.rotation = Quaternion.LookRotation(-dir.normalized);
+                    billboardTf.rotation = Quaternion.LookRotation(-dir.normalized);
             }
 
             // 调整主相机看向角色（竖屏）
             if (Camera.main != null)
             {
                 var cam = Camera.main;
-                cam.transform.position = new Vector3(0f, 1.4f, -1.2f);
+                cam.transform.position = new Vector3(0f, 1.2f, -2.2f);
                 cam.transform.rotation = Quaternion.Euler(8f, 0f, 0f);
                 cam.fieldOfView = 50f;
                 cam.backgroundColor = new Color(0.45f, 0.62f, 0.78f);

Tools/model_tools/unity_assets.py

@@ -265,7 +265,7 @@ ModelImporter:
     useFileUnits: 1
     keepQuads: 0
     weldVertices: 1
-    bakeAxisConversion: 0
+    bakeAxisConversion: 1
     preserveHierarchy: 0
     skinWeightsMode: 0
     maxBonesPerVertex: 4
@@ -280,7 +280,7 @@ ModelImporter:
     secondaryUVMinLightmapResolution: 40
     secondaryUVMinObjectScale: 1
     secondaryUVPackMargin: 4
-    useFileScale: 1
+    useFileScale: 0
     strictVertexDataChecks: 0
   tangentSpace:
     normalSmoothAngle: 60