From 2bece8dcb5104bc95149b0c40723f1dc855d6b29 Mon Sep 17 00:00:00 2001
From: Benoit Bolsee <benoit.bolsee@online.be>
Date: Wed, 18 Jun 2008 06:46:49 +0000
Subject: BGE Patch: Add Shape Action support and update MSCV_7 project file
 for glew.

Shape Action are now supported in the BGE. A new type of actuator "Shape Action" is available on mesh objects. It can be combined with Action actuator on parent armature. Only relative keys are supported. All the usual action options are available: type, blending, priority, Python API. Only actions with shape channels should be specified of course, otherwise the actuator has no effect. Shape action will still work after a mesh replacement provided that the new mesh has compatible shape keys.
---
 source/gameengine/Converter/BL_SkinDeformer.cpp | 50 ++++++++++++++++++-------
 1 file changed, 36 insertions(+), 14 deletions(-)

(limited to 'source/gameengine/Converter/BL_SkinDeformer.cpp')

diff --git a/source/gameengine/Converter/BL_SkinDeformer.cpp b/source/gameengine/Converter/BL_SkinDeformer.cpp
index 0f884674c09..78fc73f21a1 100644
--- a/source/gameengine/Converter/BL_SkinDeformer.cpp
+++ b/source/gameengine/Converter/BL_SkinDeformer.cpp
@@ -57,6 +57,19 @@ extern "C"{
 #define __NLA_DEFNORMALS
 //#undef __NLA_DEFNORMALS
 
+BL_SkinDeformer::BL_SkinDeformer(struct Object *bmeshobj, 
+								class BL_SkinMeshObject *mesh,
+								BL_ArmatureObject* arma)
+							:	//
+							BL_MeshDeformer(bmeshobj, mesh),
+							m_armobj(arma),
+							m_lastArmaUpdate(-1),
+							m_defbase(&bmeshobj->defbase),
+							m_releaseobject(false)
+{
+	Mat4CpyMat4(m_obmat, bmeshobj->obmat);
+};
+
 BL_SkinDeformer::BL_SkinDeformer(
 	struct Object *bmeshobj_old,	// Blender object that owns the new mesh
 	struct Object *bmeshobj_new,	// Blender object that owns the original mesh
@@ -65,25 +78,22 @@ BL_SkinDeformer::BL_SkinDeformer(
 	BL_ArmatureObject* arma)	:	
 		BL_MeshDeformer(bmeshobj_old, mesh),
 		m_armobj(arma),
-		m_lastUpdate(-1),
+		m_lastArmaUpdate(-1),
 		m_defbase(&bmeshobj_old->defbase),
 		m_releaseobject(release_object)
 	{
-		Mat4CpyMat4(m_obmat, bmeshobj_old->obmat);
-		m_restoremat = true;
 		// this is needed to ensure correct deformation of mesh:
 		// the deformation is done with Blender's armature_deform_verts() function
 		// that takes an object as parameter and not a mesh. The object matrice is used
-		// in the calculation, so we must force the same matrice to simulate a pure replacement of mesh
-		Mat4CpyMat4(bmeshobj_old->obmat, bmeshobj_new->obmat);
+		// in the calculation, so we must use the matrix of the original object to
+		// simulate a pure replacement of the mesh.
+		Mat4CpyMat4(m_obmat, bmeshobj_new->obmat);
 	}
 
 BL_SkinDeformer::~BL_SkinDeformer()
 {
 	if(m_releaseobject && m_armobj)
 		m_armobj->Release();
-	if (m_restoremat)
-		Mat4CpyMat4(m_objMesh->obmat, m_obmat);
 }
 
 bool BL_SkinDeformer::Apply(RAS_IPolyMaterial *mat)
@@ -98,15 +108,13 @@ bool BL_SkinDeformer::Apply(RAS_IPolyMaterial *mat)
 	MT_Point3 pt;
 //	float co[3];
 
-	if (!m_armobj)
+	if (!Update())
+		// no need to update the cache
 		return false;
 
-	Update();
-
 	array = m_pMeshObject->GetVertexCache(mat);
 	mvarray = m_pMeshObject->GetMVertCache(mat);
 	diarray = m_pMeshObject->GetDIndexCache(mat);
-	
 	// For each array
 	for (i=0; i<array.size(); i++) {
 		//	For each vertex
@@ -140,10 +148,11 @@ void BL_SkinDeformer::ProcessReplica()
 
 //void where_is_pose (Object *ob);
 //void armature_deform_verts(Object *armOb, Object *target, float (*vertexCos)[3], int numVerts, int deformflag); 
-void BL_SkinDeformer::Update(void)
+bool BL_SkinDeformer::Update(void)
 {
 	/* See if the armature has been updated for this frame */
-	if (m_lastUpdate!=m_armobj->GetLastFrame()){	
+	if (m_armobj && m_lastArmaUpdate!=m_armobj->GetLastFrame()){	
+		float obmat[4][4];	// the original object matrice 
 		
 		/* Do all of the posing necessary */
 		m_armobj->ApplyPose();
@@ -161,14 +170,27 @@ void BL_SkinDeformer::Update(void)
 		for (int v =0; v<m_bmesh->totvert; v++)
 			VECCOPY(m_transverts[v], m_bmesh->mvert[v].co);
 
+		// save matrix first
+		Mat4CpyMat4(obmat, m_objMesh->obmat);
+		// set reference matrix
+		Mat4CpyMat4(m_objMesh->obmat, m_obmat);
+
 		armature_deform_verts( par_arma, m_objMesh, NULL, m_transverts, NULL, m_bmesh->totvert, ARM_DEF_VGROUP, NULL, NULL );
+		
+		// restore matrix 
+		Mat4CpyMat4(m_objMesh->obmat, obmat);
+
 #ifdef __NLA_DEFNORMALS
 		RecalcNormals();
 #endif
 
 		/* Update the current frame */
-		m_lastUpdate=m_armobj->GetLastFrame();
+		m_lastArmaUpdate=m_armobj->GetLastFrame();
+		
+		/* indicate that the m_transverts and normals are up to date */
+		return true;
 	}
+	return false;
 }
 
 /* XXX note: I propose to drop this function */
-- 
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