Speedup for bullet physics mesh conversion

Was adding each face with a remove doubles option that made conversion increasingly slower for larger meshes, this would often hang blender when starting with the BGE with larger meshes.

Replace btTriangleMesh()->addTriangle() with btTriangleIndexVertexArray()

YoFrankie level_1_home.blend starts a third faster, level_nut about twice as fast.

- previous commit was also incorrect using the original meshes vert locations rather then the vert locations that came from the derived mesh.
- Softbody is relying on removing doubles at 0.01 to give stable results, this no longer works but seems a bit dodgy anyway. Maybe some post-processing filter could fix up a mesh for bullet softbody.

1 files changed, 10 insertions, 0 deletions

diff --git a/source/gameengine/Rasterizer/RAS_MeshObject.h b/source/gameengine/Rasterizer/RAS_MeshObject.h
index 0d35a2f402b..404b7f16a59 100644
--- a/source/gameengine/Rasterizer/RAS_MeshObject.h
+++ b/source/gameengine/Rasterizer/RAS_MeshObject.h
@@ -147,6 +147,16 @@ public:
 	/* polygon sorting by Z for alpha */
 	void				SortPolygons(RAS_MeshSlot& ms, const MT_Transform &transform);
 
+
+	bool				HasColliderPolygon() {
+		int numpolys= NumPolygons();
+		for (int p=0; p<numpolys; p++)
+			if (m_Polygons[p]->IsCollider())
+				return true;
+		
+		return false;
+	}
+
 	/* for construction to find shared vertices */
 	struct SharedVertex {
 		RAS_DisplayArray *m_darray;