BGE Physics

Add support back for reinstancePhysics mesh, a frequently requested feature in the BGE forums.
from what I can tell Sumo supported this but bullet never did.
Currently only accessible via python at the moment.

- rigid body, dynamic, static types work.
- instanced physics meshes are modified too.
- compound shapes are not supported.

Physics mesh can be re-instanced from...
* shape keys & armature deformations
* subsurf (any other modifiers too)
* RAS_TexVert's (can be modified from python)

Moved the reinstancePhysicsMesh functions from RAS_MeshObject into KX_GameObject since the physics data is stored here.

video and blend file demo.
http://www.graphicall.org/ftp/ideasman42/reinstance.ogv
http://www.graphicall.org/ftp/ideasman42/reinstance_demo.blend

3 files changed, 22 insertions, 0 deletions

diff --git a/source/gameengine/Rasterizer/RAS_Deformer.h b/source/gameengine/Rasterizer/RAS_Deformer.h
index fe9b1540af8..75c0dcd1eeb 100644
--- a/source/gameengine/Rasterizer/RAS_Deformer.h
+++ b/source/gameengine/Rasterizer/RAS_Deformer.h
@@ -38,6 +38,7 @@
 #include "GEN_Map.h"
 
 struct DerivedMesh;
+class RAS_MeshObject;
 
 class RAS_Deformer
 {
@@ -71,6 +72,12 @@ public:
 	{
 		return NULL;
 	}
+	virtual class RAS_MeshObject* GetRasMesh()
+	{
+		/* m_pMesh does not seem to be being used?? */
+		return NULL;
+	}
+	virtual float (* GetTransVerts(int *tot))[3]	{	*tot= 0; return NULL; }
 
 protected:
 	class RAS_MeshObject	*m_pMesh;
diff --git a/source/gameengine/Rasterizer/RAS_MeshObject.cpp b/source/gameengine/Rasterizer/RAS_MeshObject.cpp
index 1dfcb0c512d..0ae6ad9d7ea 100644
--- a/source/gameengine/Rasterizer/RAS_MeshObject.cpp
+++ b/source/gameengine/Rasterizer/RAS_MeshObject.cpp
@@ -382,6 +382,13 @@ RAS_TexVert* RAS_MeshObject::GetVertex(unsigned int matid,
 	return NULL;
 }
 
+const float* RAS_MeshObject::GetVertexLocation(unsigned int orig_index)
+{
+	vector<SharedVertex>& sharedmap = m_sharedvertex_map[orig_index];
+	vector<SharedVertex>::iterator it= sharedmap.begin();
+	return it->m_darray->m_vertex[it->m_offset].getXYZ();
+}
+
 void RAS_MeshObject::AddMeshUser(void *clientobj, SG_QList *head, RAS_Deformer* deformer)
 {
 	list<RAS_MeshMaterial>::iterator it;
diff --git a/source/gameengine/Rasterizer/RAS_MeshObject.h b/source/gameengine/Rasterizer/RAS_MeshObject.h
index e763d6e7c7f..bf9c0f7b682 100644
--- a/source/gameengine/Rasterizer/RAS_MeshObject.h
+++ b/source/gameengine/Rasterizer/RAS_MeshObject.h
@@ -126,6 +126,7 @@ public:
 	/* vertex and polygon acces */
 	int					NumVertices(RAS_IPolyMaterial* mat);
 	RAS_TexVert*		GetVertex(unsigned int matid, unsigned int index);
+	const float*		GetVertexLocation(unsigned int orig_index);
 
 	int					NumPolygons();
 	RAS_Polygon*		GetPolygon(int num) const;
@@ -141,6 +142,13 @@ public:
 							bool culled);
 
 	void				RemoveFromBuckets(void *clientobj);
+	void				EndConversion() {
+#if 0
+		m_sharedvertex_map.clear(); // SharedVertex
+		vector<vector<SharedVertex> >	shared_null(0);
+		shared_null.swap( m_sharedvertex_map ); /* really free the memory */
+#endif
+	}
 
 	/* colors */
 	void				DebugColor(unsigned int abgr);