port 2V2-d.2: Granny runtime on libgr2, main character model animates

Implement the Granny SDK 2.11 API the client uses on top of libgr2
(platform/EterGrnLib/GrannyRuntime.cpp, shim granny.h declared from the
SDK header): file sections, type-definition vertex conversion, material
textures by Usage, mesh/bone bindings, deformer, control clock/loop/ease
and weighted SRT sampling. Port EterGrnLib (LODController, Material, Mesh,
Model, ModelInstance*, Motion, Thing, ThingInstance, Util) plus EterLib
GrpObjectInstance/GrpCollisionObject/CollisionData verbatim and drop their
platform skeletons and pending stand-ins; register the gr2 resource
factory; vertex/index buffers are CPU-side until the 2V2-e render adapter.

app.UpdateGame/RenderGame now run 40250's bodies, reaching the
CPythonApplication members through their singletons (the platform has no
app object); CPythonGraphic joins GameSingletons in member order, and
GetMousePosition reads the host cursor.

port.login_flow asserts the main instance's PART_MAIN model has meshes,
its diffuse image loaded and the WAIT motion moves the bones between
frames; offline and live pass, port_gate macos PASS.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

extension/src/port/EterGrnLib/Motion.cpp

@@ -0,0 +1,70 @@
+#include "StdAfx.h"
+#include "Motion.h"
+
+CGrannyMotion::CGrannyMotion()
+{
+	Initialize();
+}
+
+CGrannyMotion::~CGrannyMotion()
+{
+	Destroy();
+}
+
+bool CGrannyMotion::IsEmpty()
+{
+	return m_pgrnAni ? false : true;
+}
+
+void CGrannyMotion::Destroy()
+{
+	Initialize();
+}
+
+void CGrannyMotion::Initialize()
+{
+	m_pgrnAni = NULL;
+}
+
+bool CGrannyMotion::BindGrannyAnimation(granny_animation * pgrnAni)
+{
+	assert(IsEmpty());
+
+	m_pgrnAni = pgrnAni;
+	return true;
+}
+
+granny_animation* CGrannyMotion::GetGrannyAnimationPointer() const
+{
+	return m_pgrnAni;
+}
+
+const char * CGrannyMotion::GetName() const
+{
+	return m_pgrnAni->Name;
+}
+
+float CGrannyMotion::GetDuration() const
+{
+	return m_pgrnAni->Duration;
+}
+
+void CGrannyMotion::GetTextTrack(const char * c_szTextTrackName, int * pCount, float * pArray) const
+{
+	if (m_pgrnAni->TrackGroupCount != 1)
+	{
+//		assert(!"CGrannyMotion::GetTextTrack - TrackCount is not 1");
+	}
+
+	granny_track_group * pTrack = m_pgrnAni->TrackGroups[0];
+
+	for (int i = 0; i < pTrack->TextTrackCount; ++i)
+	{
+		granny_text_track & rTextTrack = pTrack->TextTracks[i];
+
+		for (int j = 0; j < rTextTrack.EntryCount; ++j)
+			if (!_stricmp(c_szTextTrackName, rTextTrack.Entries[j].Text))
+				pArray[(*pCount)++] = rTextTrack.Entries[j].TimeStamp;
+	}
+}
+