From ba9d3aa4ab1be8c7faa28c9d49b4d0ed5f17b32a Mon Sep 17 00:00:00 2001 From: Benoit Bolsee Date: Sat, 13 Sep 2008 11:46:07 +0000 Subject: BGE patch: fix transform bug on compound shape: child shape didn't take into account parent inverse node. Fix scaling bug on instantiation of compound shape: child shape didn't have correct shape. Note: global scaling doesn't work on compound shape (limitation of Bullet); don't set any scale on the top dynamic object. --- .../gameengine/Ketsji/KX_ConvertPhysicsObjects.cpp | 26 ++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) (limited to 'source/gameengine/Ketsji/KX_ConvertPhysicsObjects.cpp') diff --git a/source/gameengine/Ketsji/KX_ConvertPhysicsObjects.cpp b/source/gameengine/Ketsji/KX_ConvertPhysicsObjects.cpp index 9607489497d..6507bf501e4 100644 --- a/source/gameengine/Ketsji/KX_ConvertPhysicsObjects.cpp +++ b/source/gameengine/Ketsji/KX_ConvertPhysicsObjects.cpp @@ -801,11 +801,29 @@ void KX_ConvertBulletObject( class KX_GameObject* gameobj, assert(colShape->isCompound()); btCompoundShape* compoundShape = (btCompoundShape*)colShape; - MT_Point3 childPos = gameobj->GetSGNode()->GetLocalPosition(); - MT_Matrix3x3 childRot = gameobj->GetSGNode()->GetLocalOrientation(); - MT_Vector3 childScale = gameobj->GetSGNode()->GetLocalScale(); + // compute the local transform from parent, this may include a parent inverse node + SG_Node* gameNode = gameobj->GetSGNode(); + SG_Node* parentInverseNode = gameNode->GetSGParent(); + if (parentInverseNode && parentInverseNode->GetSGClientObject() != NULL) + // this is not a parent inverse node, cancel it + parentInverseNode = NULL; + // now combine the parent inverse node and the game node + MT_Point3 childPos = gameNode->GetLocalPosition(); + MT_Matrix3x3 childRot = gameNode->GetLocalOrientation(); + MT_Vector3 childScale = gameNode->GetLocalScale(); + if (parentInverseNode) + { + const MT_Point3& parentInversePos = parentInverseNode->GetLocalPosition(); + const MT_Matrix3x3& parentInverseRot = parentInverseNode->GetLocalOrientation(); + const MT_Vector3& parentInverseScale = parentInverseNode->GetLocalScale(); + childRot = parentInverseRot * childRot; + childScale = parentInverseScale * childScale; + childPos = parentInversePos+parentInverseScale*(parentInverseRot*childPos); + } - bm->setLocalScaling(btVector3(childScale.x(),childScale.y(),childScale.z())); + shapeInfo->m_childScale.setValue(childScale.x(),childScale.y(),childScale.z()); + bm->setLocalScaling(shapeInfo->m_childScale); + shapeInfo->m_childTrans.setOrigin(btVector3(childPos.x(),childPos.y(),childPos.z())); float rotval[12]; childRot.getValue(rotval); -- cgit v1.2.3