6 files changed, 399 insertions, 43 deletions

diff --git a/src/animation/AnimBlendClumpData.h b/src/animation/AnimBlendClumpData.h
index 1c8c391d..a537425a 100644
--- a/src/animation/AnimBlendClumpData.h
+++ b/src/animation/AnimBlendClumpData.h
@@ -18,7 +18,7 @@ struct AnimBlendFrameData
 #ifdef PED_SKIN
 	union {
 		RwFrame *frame;
-		RpHAnimStdKeyFrame *hanimframe;
+		RpHAnimStdKeyFrame *hanimFrame;
 	};
 	int32 nodeID;
 #else
@@ -50,4 +50,6 @@ public:
 #endif
 	void ForAllFrames(void (*cb)(AnimBlendFrameData*, void*), void *arg);
 };
+#ifndef PED_SKIN
 static_assert(sizeof(CAnimBlendClumpData) == 0x14, "CAnimBlendClumpData: error");
+#endif
diff --git a/src/animation/Bones.cpp b/src/animation/Bones.cpp
new file mode 100644
index 00000000..1608449d
--- /dev/null
+++ b/src/animation/Bones.cpp
@@ -0,0 +1,52 @@
+#include "common.h"
+#include "PedModelInfo.h"
+#include "Bones.h"
+
+#ifdef PED_SKIN
+
+int
+ConvertPedNode2BoneTag(int node)
+{
+	switch(node){
+	case PED_TORSO:	return BONE_waist;
+	case PED_MID:	return BONE_torso;	// this is what Xbox/Mobile use
+	//		return BONE_mid;	// this is what PS2/PC use
+	case PED_HEAD:		return BONE_head;
+	case PED_UPPERARML:	return BONE_upperarml;
+	case PED_UPPERARMR:	return BONE_upperarmr;
+	case PED_HANDL:		return BONE_Lhand;
+	case PED_HANDR:		return BONE_Rhand;
+	case PED_UPPERLEGL:	return BONE_upperlegl;
+	case PED_UPPERLEGR:	return BONE_upperlegr;
+	case PED_FOOTL:		return BONE_footl;
+	case PED_FOOTR:		return BONE_footr;
+	case PED_LOWERLEGR:	return BONE_lowerlegl;
+	}
+	return -1;
+}
+
+const char*
+ConvertBoneTag2BoneName(int tag)
+{
+	switch(tag){
+	case BONE_waist:	return "Swaist";
+	case BONE_upperlegr:	return "Supperlegr";
+	case BONE_lowerlegr:	return "Slowerlegr";
+	case BONE_footr:	return "Sfootr";
+	case BONE_upperlegl:	return "Supperlegl";
+	case BONE_lowerlegl:	return "Slowerlegl";
+	case BONE_footl:	return "Sfootl";
+	case BONE_mid:	return "Smid";
+	case BONE_torso:	return "Storso";
+	case BONE_head:	return "Shead";
+	case BONE_upperarmr:	return "Supperarmr";
+	case BONE_lowerarmr:	return "Slowerarmr";
+	case BONE_Rhand:	return "SRhand";
+	case BONE_upperarml:	return "Supperarml";
+	case BONE_lowerarml:	return "Slowerarml";
+	case BONE_Lhand:	return "SLhand";
+	}
+	return nil;
+}
+
+#endif
diff --git a/src/animation/Bones.h b/src/animation/Bones.h
new file mode 100644
index 00000000..38d91ba3
--- /dev/null
+++ b/src/animation/Bones.h
@@ -0,0 +1,24 @@
+#pragma once
+
+enum BoneTag
+{
+	BONE_waist,
+	BONE_upperlegr,
+	BONE_lowerlegr,
+	BONE_footr,
+	BONE_upperlegl,
+	BONE_lowerlegl,
+	BONE_footl,
+	BONE_mid,
+	BONE_torso,
+	BONE_head,
+	BONE_upperarmr,
+	BONE_lowerarmr,
+	BONE_Rhand,
+	BONE_upperarml,
+	BONE_lowerarml,
+	BONE_Lhand,
+};
+
+int ConvertPedNode2BoneTag(int node);
+const char *ConvertBoneTag2BoneName(int tag);
diff --git a/src/animation/FrameUpdate.cpp b/src/animation/FrameUpdate.cpp
index df45bfb5..a38ebc74 100644
--- a/src/animation/FrameUpdate.cpp
+++ b/src/animation/FrameUpdate.cpp
@@ -8,12 +8,18 @@
 
 CAnimBlendClumpData *gpAnimBlendClump;
 
-void FrameUpdateCallBack(AnimBlendFrameData *frame, void *arg);
-void FrameUpdateCallBackWithVelocityExtraction(AnimBlendFrameData *frame, void *arg);
-void FrameUpdateCallBackWith3dVelocityExtraction(AnimBlendFrameData *frame, void *arg);
+// PS2 names without "NonSkinned"
+void FrameUpdateCallBackNonSkinned(AnimBlendFrameData *frame, void *arg);
+void FrameUpdateCallBackNonSkinnedWithVelocityExtraction(AnimBlendFrameData *frame, void *arg);
+void FrameUpdateCallBackNonSkinnedWith3dVelocityExtraction(AnimBlendFrameData *frame, void *arg);
+
+void FrameUpdateCallBackSkinned(AnimBlendFrameData *frame, void *arg);
+void FrameUpdateCallBackSkinnedWithVelocityExtraction(AnimBlendFrameData *frame, void *arg);
+void FrameUpdateCallBackSkinnedWith3dVelocityExtraction(AnimBlendFrameData *frame, void *arg);
+
 
 void
-FrameUpdateCallBack(AnimBlendFrameData *frame, void *arg)
+FrameUpdateCallBackNonSkinned(AnimBlendFrameData *frame, void *arg)
 {
 	CVector vec, pos(0.0f, 0.0f, 0.0f);
 	CQuaternion q, rot(0.0f, 0.0f, 0.0f, 0.0f);
@@ -25,9 +31,9 @@ FrameUpdateCallBack(AnimBlendFrameData *frame, void *arg)
 	if(frame->flag & AnimBlendFrameData::VELOCITY_EXTRACTION &&
 	   gpAnimBlendClump->velocity){
 		if(frame->flag & AnimBlendFrameData::VELOCITY_EXTRACTION_3D)
-			FrameUpdateCallBackWith3dVelocityExtraction(frame, arg);
+			FrameUpdateCallBackNonSkinnedWith3dVelocityExtraction(frame, arg);
 		else
-			FrameUpdateCallBackWithVelocityExtraction(frame, arg);
+			FrameUpdateCallBackNonSkinnedWithVelocityExtraction(frame, arg);
 		return;
 	}
 
@@ -48,12 +54,7 @@ FrameUpdateCallBack(AnimBlendFrameData *frame, void *arg)
 
 	if((frame->flag & AnimBlendFrameData::IGNORE_ROTATION) == 0){
 		RwMatrixSetIdentity(mat);
-
-		float norm = rot.MagnitudeSqr();
-		if(norm == 0.0f)
-			rot.w = 1.0f;
-		else
-			rot *= 1.0f/Sqrt(norm);
+		rot.Normalise();
 		rot.Get(mat);
 	}
 
@@ -69,7 +70,7 @@ FrameUpdateCallBack(AnimBlendFrameData *frame, void *arg)
 }
 
 void
-FrameUpdateCallBackWithVelocityExtraction(AnimBlendFrameData *frame, void *arg)
+FrameUpdateCallBackNonSkinnedWithVelocityExtraction(AnimBlendFrameData *frame, void *arg)
 {
 	CVector vec, pos(0.0f, 0.0f, 0.0f);
 	CQuaternion q, rot(0.0f, 0.0f, 0.0f, 0.0f);
@@ -122,12 +123,7 @@ FrameUpdateCallBackWithVelocityExtraction(AnimBlendFrameData *frame, void *arg)
 
 	if((frame->flag & AnimBlendFrameData::IGNORE_ROTATION) == 0){
 		RwMatrixSetIdentity(mat);
-
-		float norm = rot.MagnitudeSqr();
-		if(norm == 0.0f)
-			rot.w = 1.0f;
-		else
-			rot *= 1.0f/Sqrt(norm);
+		rot.Normalise();
 		rot.Get(mat);
 	}
 
@@ -154,7 +150,7 @@ FrameUpdateCallBackWithVelocityExtraction(AnimBlendFrameData *frame, void *arg)
 
 // original code uses do loops?
 void
-FrameUpdateCallBackWith3dVelocityExtraction(AnimBlendFrameData *frame, void *arg)
+FrameUpdateCallBackNonSkinnedWith3dVelocityExtraction(AnimBlendFrameData *frame, void *arg)
 {
 	CVector vec, pos(0.0f, 0.0f, 0.0f);
 	CQuaternion q, rot(0.0f, 0.0f, 0.0f, 0.0f);
@@ -201,12 +197,7 @@ FrameUpdateCallBackWith3dVelocityExtraction(AnimBlendFrameData *frame, void *arg
 
 	if((frame->flag & AnimBlendFrameData::IGNORE_ROTATION) == 0){
 		RwMatrixSetIdentity(mat);
-
-		float norm = rot.MagnitudeSqr();
-		if(norm == 0.0f)
-			rot.w = 1.0f;
-		else
-			rot *= 1.0f/Sqrt(norm);
+		rot.Normalise();
 		rot.Get(mat);
 	}
 
@@ -220,3 +211,203 @@ FrameUpdateCallBackWith3dVelocityExtraction(AnimBlendFrameData *frame, void *arg
 	}
 	RwMatrixUpdate(mat);
 }
+
+#ifdef PED_SKIN
+
+void
+FrameUpdateCallBackSkinned(AnimBlendFrameData *frame, void *arg)
+{
+	CVector vec, pos(0.0f, 0.0f, 0.0f);
+	CQuaternion q, rot(0.0f, 0.0f, 0.0f, 0.0f);
+	float totalBlendAmount = 0.0f;
+	RpHAnimStdKeyFrame *xform = frame->hanimFrame;
+	CAnimBlendNode **node;
+	AnimBlendFrameUpdateData *updateData = (AnimBlendFrameUpdateData*)arg;
+
+	if(frame->flag & AnimBlendFrameData::VELOCITY_EXTRACTION &&
+	   gpAnimBlendClump->velocity){
+		if(frame->flag & AnimBlendFrameData::VELOCITY_EXTRACTION_3D)
+			FrameUpdateCallBackSkinnedWith3dVelocityExtraction(frame, arg);
+		else
+			FrameUpdateCallBackSkinnedWithVelocityExtraction(frame, arg);
+		return;
+	}
+
+	if(updateData->foobar)
+		for(node = updateData->nodes; *node; node++)
+			if((*node)->sequence && (*node)->association->IsPartial())
+				totalBlendAmount += (*node)->association->blendAmount;
+
+	for(node = updateData->nodes; *node; node++){
+		if((*node)->sequence){
+			(*node)->Update(vec, q, 1.0f-totalBlendAmount);
+			if((*node)->sequence->HasTranslation())
+				pos += vec;
+			rot += q;
+		}
+		++*node;
+	}
+
+	if((frame->flag & AnimBlendFrameData::IGNORE_ROTATION) == 0){
+		rot.Normalise();
+		xform->q.imag.x = rot.x;
+		xform->q.imag.y = rot.y;
+		xform->q.imag.z = rot.z;
+		xform->q.real = rot.w;
+	}
+
+	if((frame->flag & AnimBlendFrameData::IGNORE_TRANSLATION) == 0){
+		xform->t.x = pos.x;
+		xform->t.y = pos.y;
+		xform->t.z = pos.z;
+		xform->t.x += frame->resetPos.x;
+		xform->t.y += frame->resetPos.y;
+		xform->t.z += frame->resetPos.z;
+	}
+}
+
+void
+FrameUpdateCallBackSkinnedWithVelocityExtraction(AnimBlendFrameData *frame, void *arg)
+{
+	CVector vec, pos(0.0f, 0.0f, 0.0f);
+	CQuaternion q, rot(0.0f, 0.0f, 0.0f, 0.0f);
+	float totalBlendAmount = 0.0f;
+	float transx = 0.0f, transy = 0.0f;
+	float curx = 0.0f, cury = 0.0f;
+	float endx = 0.0f, endy = 0.0f;
+	bool looped = false;
+	RpHAnimStdKeyFrame *xform = frame->hanimFrame;
+	CAnimBlendNode **node;
+	AnimBlendFrameUpdateData *updateData = (AnimBlendFrameUpdateData*)arg;
+
+	if(updateData->foobar)
+		for(node = updateData->nodes; *node; node++)
+			if((*node)->sequence && (*node)->association->IsPartial())
+				totalBlendAmount += (*node)->association->blendAmount;
+
+	for(node = updateData->nodes; *node; node++)
+		if((*node)->sequence && (*node)->sequence->HasTranslation()){
+			if((*node)->association->HasTranslation()){
+				(*node)->GetCurrentTranslation(vec, 1.0f-totalBlendAmount);
+				cury += vec.y;
+				if((*node)->association->HasXTranslation())
+					curx += vec.x;
+			}
+		}
+
+	for(node = updateData->nodes; *node; node++){
+		if((*node)->sequence){
+			bool nodelooped = (*node)->Update(vec, q, 1.0f-totalBlendAmount);
+			rot += q;
+			if((*node)->sequence->HasTranslation()){
+				pos += vec;
+				if((*node)->association->HasTranslation()){
+					transy += vec.y;
+					if((*node)->association->HasXTranslation())
+						transx += vec.x;
+					looped |= nodelooped;
+					if(nodelooped){
+						(*node)->GetEndTranslation(vec, 1.0f-totalBlendAmount);
+						endy += vec.y;
+						if((*node)->association->HasXTranslation())
+							endx += vec.x;
+					}
+				}
+			}
+		}
+		++*node;
+	}
+
+	if((frame->flag & AnimBlendFrameData::IGNORE_ROTATION) == 0){
+		rot.Normalise();
+		xform->q.imag.x = rot.x;
+		xform->q.imag.y = rot.y;
+		xform->q.imag.z = rot.z;
+		xform->q.real = rot.w;
+	}
+
+	if((frame->flag & AnimBlendFrameData::IGNORE_TRANSLATION) == 0){
+		gpAnimBlendClump->velocity->x = transx - curx;
+		gpAnimBlendClump->velocity->y = transy - cury;
+		if(looped){
+			gpAnimBlendClump->velocity->x += endx;
+			gpAnimBlendClump->velocity->y += endy;
+		}
+		xform->t.x = pos.x - transx;
+		xform->t.y = pos.y - transy;
+		xform->t.z = pos.z;
+		if(xform->t.z >= -0.8f)
+			if(xform->t.z < -0.4f)
+				xform->t.z += (2.5f * xform->t.z + 2.0f) * frame->resetPos.z;
+			else
+				xform->t.z += frame->resetPos.z;
+		xform->t.x += frame->resetPos.x;
+		xform->t.y += frame->resetPos.y;
+	}
+}
+
+void
+FrameUpdateCallBackSkinnedWith3dVelocityExtraction(AnimBlendFrameData *frame, void *arg)
+{
+	CVector vec, pos(0.0f, 0.0f, 0.0f);
+	CQuaternion q, rot(0.0f, 0.0f, 0.0f, 0.0f);
+	float totalBlendAmount = 0.0f;
+	CVector trans(0.0f, 0.0f, 0.0f);
+	CVector cur(0.0f, 0.0f, 0.0f);
+	CVector end(0.0f, 0.0f, 0.0f);
+	bool looped = false;
+	RpHAnimStdKeyFrame *xform = frame->hanimFrame;
+	CAnimBlendNode **node;
+	AnimBlendFrameUpdateData *updateData = (AnimBlendFrameUpdateData*)arg;
+
+	if(updateData->foobar)
+		for(node = updateData->nodes; *node; node++)
+			if((*node)->sequence && (*node)->association->IsPartial())
+				totalBlendAmount += (*node)->association->blendAmount;
+
+	for(node = updateData->nodes; *node; node++)
+		if((*node)->sequence && (*node)->sequence->HasTranslation()){
+			if((*node)->association->HasTranslation()){
+				(*node)->GetCurrentTranslation(vec, 1.0f-totalBlendAmount);
+				cur += vec;
+			}
+		}
+
+	for(node = updateData->nodes; *node; node++){
+		if((*node)->sequence){
+			bool nodelooped = (*node)->Update(vec, q, 1.0f-totalBlendAmount);
+			rot += q;
+			if((*node)->sequence->HasTranslation()){
+				pos += vec;
+				if((*node)->association->HasTranslation()){
+					trans += vec;
+					looped |= nodelooped;
+					if(nodelooped){
+						(*node)->GetEndTranslation(vec, 1.0f-totalBlendAmount);
+						end += vec;
+					}
+				}
+			}
+		}
+		++*node;
+	}
+
+	if((frame->flag & AnimBlendFrameData::IGNORE_ROTATION) == 0){
+		rot.Normalise();
+		xform->q.imag.x = rot.x;
+		xform->q.imag.y = rot.y;
+		xform->q.imag.z = rot.z;
+		xform->q.real = rot.w;
+	}
+
+	if((frame->flag & AnimBlendFrameData::IGNORE_TRANSLATION) == 0){
+		*gpAnimBlendClump->velocity = trans - cur;
+		if(looped)
+			*gpAnimBlendClump->velocity += end;
+		xform->t.x = (pos - trans).x + frame->resetPos.x;
+		xform->t.y = (pos - trans).y + frame->resetPos.y;
+		xform->t.z = (pos - trans).z + frame->resetPos.z;
+	}
+}
+
+#endif
diff --git a/src/animation/RpAnimBlend.cpp b/src/animation/RpAnimBlend.cpp
index 20290666..d3e10889 100644
--- a/src/animation/RpAnimBlend.cpp
+++ b/src/animation/RpAnimBlend.cpp
@@ -1,12 +1,17 @@
 #include "common.h"
 
+#include "RwHelper.h"
 #include "General.h"
 #include "NodeName.h"
 #include "VisibilityPlugins.h"
+#include "Bones.h"
 #include "AnimBlendClumpData.h"
 #include "AnimBlendHierarchy.h"
 #include "AnimBlendAssociation.h"
 #include "RpAnimBlend.h"
+#ifdef PED_SKIN
+#include "PedModelInfo.h"
+#endif
 
 RwInt32 ClumpOffset;
 
@@ -122,19 +127,59 @@ FrameForAllChildrenFillFrameArrayCallBack(RwFrame *frame, void *data)
 	return frame;
 }
 
+// FrameInitCallBack on PS2
 void
-FrameInitCallBack(AnimBlendFrameData *frameData, void*)
+FrameInitCBnonskin(AnimBlendFrameData *frameData, void*)
 {
 	frameData->flag = 0;
 	frameData->resetPos = *RwMatrixGetPos(RwFrameGetMatrix(frameData->frame));
 }
 
 void
-RpAnimBlendClumpInit(RpClump *clump)
+FrameInitCBskin(AnimBlendFrameData *frameData, void*)
 {
+	frameData->flag = 0;
+}
+
 #ifdef PED_SKIN
-	TODO
-#else
+void
+RpAnimBlendClumpInitSkinned(RpClump *clump)
+{
+	int i;
+	RwV3d boneTab[64];
+	CAnimBlendClumpData *clumpData;
+	RpAtomic *atomic;
+	RpSkin *skin;
+	RpHAnimHierarchy *hier;
+	int numBones;
+
+	RpAnimBlendAllocateData(clump);
+	clumpData = *RPANIMBLENDCLUMPDATA(clump);
+	atomic = IsClumpSkinned(clump);
+	assert(atomic);
+	skin = RpSkinGeometryGetSkin(RpAtomicGetGeometry(atomic));
+	assert(skin);
+	numBones = RpSkinGetNumBones(skin);
+	clumpData->SetNumberOfBones(numBones);
+	hier = GetAnimHierarchyFromSkinClump(clump);
+	assert(hier);
+	memset(boneTab, 0, sizeof(boneTab));
+	SkinGetBonePositionsToTable(clump, boneTab);
+
+	AnimBlendFrameData *frames = clumpData->frames;
+	for(i = 0; i < numBones; i++){
+		frames[i].nodeID = HIERNODEID(hier, i);
+		frames[i].resetPos = boneTab[i];
+		frames[i].hanimFrame = (RpHAnimStdKeyFrame*)rpHANIMHIERARCHYGETINTERPFRAME(hier, i);
+	}
+	clumpData->ForAllFrames(FrameInitCBskin, nil);
+	clumpData->frames[0].flag |= AnimBlendFrameData::VELOCITY_EXTRACTION;
+}
+#endif
+
+void
+RpAnimBlendClumpInitNotSkinned(RpClump *clump)
+{
 	int numFrames = 0;
 	CAnimBlendClumpData *clumpData;
 	RwFrame *root;
@@ -147,9 +192,19 @@ RpAnimBlendClumpInit(RpClump *clump)
 	clumpData->SetNumberOfFrames(numFrames);
 	frames = clumpData->frames;
 	RwFrameForAllChildren(root, FrameForAllChildrenFillFrameArrayCallBack, &frames);
-	clumpData->ForAllFrames(FrameInitCallBack, nil);
+	clumpData->ForAllFrames(FrameInitCBnonskin, nil);
 	clumpData->frames[0].flag |= AnimBlendFrameData::VELOCITY_EXTRACTION;
+}
+
+void
+RpAnimBlendClumpInit(RpClump *clump)
+{
+#ifdef PED_SKIN
+	if(IsClumpSkinned(clump))
+		RpAnimBlendClumpInitSkinned(clump);
+	else
 #endif
+		RpAnimBlendClumpInitNotSkinned(clump);
 }
 
 bool
@@ -298,42 +353,68 @@ RpAnimBlendClumpGetFirstAssociation(RpClump *clump)
 	return CAnimBlendAssociation::FromLink(clumpData->link.next); 
 }
 
+// FillFrameArrayCallBack on PS2
 void
-FillFrameArrayCallBack(AnimBlendFrameData *frame, void *arg)
+FillFrameArrayCBnonskin(AnimBlendFrameData *frame, void *arg)
 {
 	AnimBlendFrameData **frames = (AnimBlendFrameData**)arg;
 	frames[CVisibilityPlugins::GetFrameHierarchyId(frame->frame)] = frame;
 }
 
+#ifdef PED_SKIN
+void
+RpAnimBlendClumpFillFrameArraySkin(RpClump *clump, AnimBlendFrameData **frames)
+{
+	int i;
+	CAnimBlendClumpData *clumpData = *RPANIMBLENDCLUMPDATA(clump);
+	RpHAnimHierarchy *hier = GetAnimHierarchyFromSkinClump(clump);
+	for(i = PED_MID; i < PED_NODE_MAX; i++)
+		frames[i] = &clumpData->frames[RpHAnimIDGetIndex(hier, ConvertPedNode2BoneTag(i))];
+}
+#endif
+
 void
 RpAnimBlendClumpFillFrameArray(RpClump *clump, AnimBlendFrameData **frames)
 {
 #ifdef PED_SKIN
-	TODO
-#else
-	(*RPANIMBLENDCLUMPDATA(clump))->ForAllFrames(FillFrameArrayCallBack, frames);
+	if(IsClumpSkinned(clump))
+		RpAnimBlendClumpFillFrameArraySkin(clump, frames);
+	else
 #endif
+		(*RPANIMBLENDCLUMPDATA(clump))->ForAllFrames(FillFrameArrayCBnonskin, frames);
 }
 
 AnimBlendFrameData *pFrameDataFound;
 
+// FrameFindCallBack on PS2
 void
-FrameFindCallBack(AnimBlendFrameData *frame, void *arg)
+FrameFindByNameCBnonskin(AnimBlendFrameData *frame, void *arg)
 {
 	char *nodename = GetFrameNodeName(frame->frame);
 	if(!CGeneral::faststricmp(nodename, (char*)arg))
 		pFrameDataFound = frame;
 }
 
+#ifdef PED_SKIN
+void
+FrameFindByNameCBskin(AnimBlendFrameData *frame, void *arg)
+{
+	const char *name = ConvertBoneTag2BoneName(frame->nodeID);
+	if(name && CGeneral::faststricmp(name, (char*)arg) == 0)
+		pFrameDataFound = frame;
+}
+#endif
+
 AnimBlendFrameData*
 RpAnimBlendClumpFindFrame(RpClump *clump, const char *name)
 {
 	pFrameDataFound = nil;
 #ifdef PED_SKIN
-	TODO
-#else
-	(*RPANIMBLENDCLUMPDATA(clump))->ForAllFrames(FrameFindCallBack, (void*)name);
+	if(IsClumpSkinned(clump))
+		(*RPANIMBLENDCLUMPDATA(clump))->ForAllFrames(FrameFindByNameCBskin, (void*)name);
+	else
 #endif
+		(*RPANIMBLENDCLUMPDATA(clump))->ForAllFrames(FrameFindByNameCBnonskin, (void*)name);
 	return pFrameDataFound;
 }
 
@@ -369,7 +450,12 @@ RpAnimBlendClumpUpdateAnimations(RpClump *clump, float timeDelta)
 	}
 	updateData.nodes[i] = nil;
 
-	clumpData->ForAllFrames(FrameUpdateCallBack, &updateData);
+#ifdef PED_SKIN
+	if(IsClumpSkinned(clump))
+		clumpData->ForAllFrames(FrameUpdateCallBackSkinned, &updateData);
+	else
+#endif
+		clumpData->ForAllFrames(FrameUpdateCallBackNonSkinned, &updateData);
 
 	for(link = clumpData->link.next; link; link = link->next){
 		CAnimBlendAssociation *assoc = CAnimBlendAssociation::FromLink(link);
diff --git a/src/animation/RpAnimBlend.h b/src/animation/RpAnimBlend.h
index ccfa5872..838c8816 100644
--- a/src/animation/RpAnimBlend.h
+++ b/src/animation/RpAnimBlend.h
@@ -7,7 +7,7 @@ struct AnimBlendFrameData;
 
 struct AnimBlendFrameUpdateData
 {
-	int foobar;
+	int foobar;	// TODO: figure out what this actually means
 	CAnimBlendNode *nodes[16];
 };
 
@@ -38,4 +38,5 @@ void RpAnimBlendClumpUpdateAnimations(RpClump* clump, float timeDelta);
 
 
 extern CAnimBlendClumpData *gpAnimBlendClump;
-void FrameUpdateCallBack(AnimBlendFrameData *frame, void *arg);
+void FrameUpdateCallBackNonSkinned(AnimBlendFrameData *frame, void *arg);
+void FrameUpdateCallBackSkinned(AnimBlendFrameData *frame, void *arg);