void GhostComponent::setParent(Entity* entity)
{
PhysicsComponent::setParent(entity);
btCollisionShape* ghostShape;
this->ghostObject = new btGhostObject();
BtOgre::StaticMeshToShapeConverter* converter =
new BtOgre::StaticMeshToShapeConverter(this->physicsEntity);
if (this->physicsShape == PhysicsModule::PLANE) {
ghostShape = converter->createPlane();
} else {
ghostShape = converter->createBox();
ghostShape->setLocalScaling(btVector3(0.5, 0.5, 0.5));
}
Ogre::Vector3 position = this->parent->getNode()->_getDerivedPosition();
btTransform trans(btTransform(btQuaternion(0, 0, 0, 1), BtOgre::Convert::toBullet(position)));
this->ghostObject->setCollisionShape(ghostShape);
this->ghostObject->setUserPointer(this);
this->ghostObject->setWorldTransform(trans);
this->ghostObject->setCollisionFlags(btCollisionObject::CF_NO_CONTACT_RESPONSE
| this->ghostObject->getCollisionFlags());
ENGINE->getPhysics()->getWorld()->addCollisionObject(ghostObject,
PhysicsModule::CollisionMask::COL_GHOST, PhysicsModule::CollisionMask::COL_PLAYER);
}
void PhysicsComponent::createBody()
{
int numObjects = this->parent->getNode()->numAttachedObjects();
if (numObjects > 0) {
physicsEntity = dynamic_cast<Ogre::Entity*> (parent->getNode()->getAttachedObject(0));
BtOgre::StaticMeshToShapeConverter* converter =
new BtOgre::StaticMeshToShapeConverter(physicsEntity);
switch (physicsShape)
{
case PhysicsModule::BOX:
{
shape = converter->createBox();
break;
}
case PhysicsModule::CYLINDER:
{
shape = converter->createCylinder();
break;
}
case PhysicsModule::TRIMESH:
{
shape = converter->createTrimesh();
break;
}
case PhysicsModule::PLANE:
{
shape = converter->createPlane();
break;
}
case PhysicsModule::SPHERE:
default:
{
shape = converter->createSphere();
break;
}
}
} else {
switch (physicsShape)
{
case PhysicsModule::BOX:
{
shape = new btBoxShape(btVector3(0, 0, 0));
break;
}
case PhysicsModule::CYLINDER:
{
shape = new btCylinderShape(btVector3(0, 0, 0));
break;
}
case PhysicsModule::PLANE:
{
shape = new btStaticPlaneShape(btVector3(0, 1, 0), 1);
break;
}
case PhysicsModule::TRIMESH:
case PhysicsModule::SPHERE:
default:
{
shape = new btSphereShape(0);
break;
}
}
}
// calculating inertia
if (mass != 0) {
inertia = btVector3(0, 0, 0);
shape->calculateLocalInertia(mass, inertia);
} else {
inertia = btVector3(0, 0, 0);
}
// creating BtOgre MotionState (connects Ogre and Bullet)
state = new BtOgre::RigidBodyState(parent->getNode());
btRigidBody::btRigidBodyConstructionInfo bodyProps(mass, state, shape, inertia);
bodyProps.m_friction = 20;
body = new btRigidBody(bodyProps);
// creating the Body
if (mass == 0) {
body->setCollisionFlags(body->getCollisionFlags() | btCollisionObject::CF_KINEMATIC_OBJECT);
body->setActivationState(DISABLE_DEACTIVATION);
}
body->setUserPointer(this);
ENGINE->getPhysics()->getWorld()->addRigidBody(body, group, mask);
}
