float EmberEntity::getHeight(const WFMath::Point<2>& localPosition) const
{
if (mHeightProvider) {
float height = 0;
if (mHeightProvider->getHeight(WFMath::Point<2>(localPosition.x(), localPosition.y()), height)) {
return height;
}
}
//A normal EmberEntity shouldn't know anything about the terrain, so we can't handle the area here.
//Instead we just pass it on to the parent until we get to someone who knows how to handle this (preferably the terrain).
if (getEmberLocation()) {
WFMath::Point<2> adjustedLocalPosition(getPredictedPos().x(), getPredictedPos().y());
WFMath::Vector<3> xVec = WFMath::Vector<3>(1.0, 0.0, 0.0).rotate(getOrientation());
double theta = atan2(xVec.y(), xVec.x()); // rotation about Z
WFMath::RotMatrix<2> rm;
WFMath::Vector<2> adjustment(localPosition.x(), localPosition.y());
adjustment.rotate(rm.rotation(theta));
adjustedLocalPosition += adjustment;
return getEmberLocation()->getHeight(adjustedLocalPosition) - getPredictedPos().z();
}
WFMath::Point<3> predictedPos = getPredictedPos();
if (predictedPos.isValid()) {
return predictedPos.z();
} else {
return 0.0f;
}
}
void EmberEntity::updateAttachment()
{
//Get the new location. We use getEmberLocation() since we always know that all entities are of type EmberEntity.
EmberEntity* newLocationEntity = getEmberLocation();
if (newLocationEntity && newLocationEntity->getAttachment()) {
try {
IEntityAttachment* newAttachment = newLocationEntity->getAttachment()->attachEntity(*this);
setAttachment(newAttachment);
if (newAttachment) {
newAttachment->updateScale();
}
} catch (const std::exception& ex) {
S_LOG_WARNING("Problem when creating new attachment for entity." << ex);
}
//If we're the top level entity the attachment has been set from the outside and shouldn't be changed.
//FIXME This is a little hackish; how can we improve it to not require special cases?
} else if (m_view->getTopLevel() == this) {
return;
} else {
try {
setAttachment(nullptr);
} catch (const std::exception& ex) {
S_LOG_WARNING("Problem when setting attachment for entity." << ex);
}
}
}
void EmberEntity::onLocationChanged(Eris::Entity *oldLocation)
{
//Get the new location. We use getEmberLocation() since we always know that all entities are of type EmberEntity.
EmberEntity* newLocationEntity = getEmberLocation();
if (newLocationEntity && newLocationEntity->getAttachment()) {
try {
IEntityAttachment* newAttachment = newLocationEntity->getAttachment()->attachEntity(*this);
setAttachment(newAttachment);
if (newAttachment) {
newAttachment->updateScale();
}
} catch (const std::exception& ex) {
S_LOG_WARNING("Problem when creating new attachment for entity." << ex);
}
} else {
try {
setAttachment(0);
} catch (const std::exception& ex) {
S_LOG_WARNING("Problem when setting attachment for entity." << ex);
}
}
Eris::Entity::onLocationChanged(oldLocation);
}
