chore: set XSurface deformed property when applicable

src/Common/Game/IW5/IW5_Assets.h

@@ -516,6 +516,11 @@ namespace IW5
 
     typedef tdef_align32(16) XSurfaceTri XSurfaceTri16;
 
+    enum XSurfaceFlag
+    {
+        XSURFACE_FLAG_DEFORMED = 0x40
+    };
+
     struct XSurface
     {
         unsigned char tileMode;

src/ObjLoading/XModel/LoaderXModel.cpp.template

@@ -752,9 +752,16 @@ namespace
 
             // Since bone weights are sorted by weight count, the last must have the highest weight count
             const auto maxWeightCount = common.m_vertex_bone_weights[xmodelToCommonVertexIndexLookup[xmodelToCommonVertexIndexLookup.size() - 1]].weightCount;
-            const auto modelIsRigid = maxWeightCount <= 1;
+            const auto surfaceIsRigid = maxWeightCount <= 1;
 
-            if (modelIsRigid)
+#if defined(FEATURE_IW3) || defined(FEATURE_IW4)
+            surface.deformed = !surfaceIsRigid;
+#else
+            if (!surfaceIsRigid)
+                surface.flags |= XSURFACE_FLAG_DEFORMED;
+#endif
+
+            if (surfaceIsRigid)
             {
                 constexpr auto maxVerticesForRigid = static_cast<size_t>(std::numeric_limits<decltype(XSurface::vertCount)>::max());
                 if (vertexOffset + xmodelToCommonVertexIndexLookup.size() > maxVerticesForRigid)
@@ -790,7 +797,7 @@ namespace
 
             if (!common.m_bone_weight_data.weights.empty())
             {
-                if (modelIsRigid)
+                if (surfaceIsRigid)
                 {
                     CreateVertListData(surface, xmodelToCommonVertexIndexLookup, common);
                 }

src/ObjWriting/XModel/XModelDumper.cpp.template

@@ -423,6 +423,12 @@ namespace
 
             if (surface.vertList)
             {
+#if defined(FEATURE_IW3) || defined(FEATURE_IW4)
+                assert(!surface.deformed);
+#else
+                assert((surface.flags & XSURFACE_FLAG_DEFORMED) == 0);
+#endif
+                
                 for (auto vertListIndex = 0u; vertListIndex < surface.vertListCount; vertListIndex++)
                 {
                     const auto& vertList = surface.vertList[vertListIndex];
@@ -442,6 +448,12 @@ namespace
             auto vertsBlendOffset = 0u;
             if (surface.vertInfo.vertsBlend)
             {
+#if defined(FEATURE_IW3) || defined(FEATURE_IW4)
+                assert(surface.deformed);
+#else
+                assert((surface.flags & XSURFACE_FLAG_DEFORMED) > 0);
+#endif
+                
                 // 1 bone weight
                 for (auto vertIndex = 0; vertIndex < surface.vertInfo.vertCount[0]; vertIndex++)
                 {