bool EntityManager::RemoveEntitySystem(EntitySystem& s)
{
ComponentType componentType = s.GetComponentType();
if(!HasEntitySystem(componentType))
{
return false;
}
ComponentType baseType = s.GetBaseType();
s.OnRemoveFromEntityManager(*this);
EntitySystemRemovedMessage msg;
msg.SetComponentType(componentType);
msg.SetComponentTypeString(GetStringFromSID(componentType));
EmitMessage(msg);
mEntitySystemStore.erase(mEntitySystemStore.find(componentType));
if(baseType != StringId())
{
std::pair<TypeHierarchyMap::iterator, TypeHierarchyMap::iterator> keyRange;
keyRange = mTypeHierarchy.equal_range(baseType);
TypeHierarchyMap::iterator it = keyRange.first;
while(it != keyRange.second)
{
if(it->second == componentType)
{
mTypeHierarchy.erase(it);
break;
}
++it;
}
}
return true;
}
void MapSystem::OnSetSystemProperties(const Message& m)
{
const SetSystemPropertiesMessage& msg = static_cast<const SetSystemPropertiesMessage&>(m);
EntitySystem* sys = GetEntityManager().GetEntitySystem(SIDHash(msg.GetComponentType()));
if(sys == NULL)
{
LOG_WARNING("Cannot process SetSystemProperties message. Entity system not found: "
<< msg.GetComponentType());
return;
}
const PropertyGroup& props = msg.GetSystemProperties();
for(PropertyGroup::const_iterator i = props.begin(); i != props.end(); ++i)
{
Property* target = sys->Get(i->first);
if(!target)
{
LOG_ERROR("Cannot process SetSystemProperties message. Entity system "
<< msg.GetComponentType()
<< " has no property named "
<< GetStringFromSID(i->first));
continue;
}
target->SetFrom(*i->second);
#if CALL_ONPROPERTYCHANGED_METHOD
sys->OnPropertyChanged(i->first, *target);
#endif
}
sys->Finished();
}
void MessagePump::RegisterForMessages(MessageType msgtype, MessageFunctor ftr, unsigned int options, const std::string& funcname)
{
MsgRegistryEntry e;
e.mOptions = options;
e.mFunctor = ftr;
e.mFuncName = funcname.empty() ? msgtype : dtEntity::SID(funcname);
unsigned int priority = options & 3;
std::pair<MessageFunctorRegistry::iterator, MessageFunctorRegistry::iterator> keyRange;
keyRange = mMessageFunctors.equal_range(msgtype);
MessageFunctorRegistry::iterator it = keyRange.first;
while(it != keyRange.second)
{
unsigned int otherpriority = it->second.mOptions & 3;
if(it->second.mFunctor == ftr)
{
LOG_ERROR("Trying to register a functor twice for same message: " << GetStringFromSID(msgtype));
}
if(otherpriority <= priority)
{
break;
}
++it;
}
mMessageFunctors.insert(it, std::make_pair(msgtype, e));
assert(IsRegistered(msgtype, ftr));
}
bool EntityManager::AddEntitySystem(EntitySystem& s)
{
if(HasEntitySystem(s.GetComponentType()))
{
LOG_ERROR("Entity system already added! Type: " << GetStringFromSID(s.GetComponentType()));
return false;
}
mEntitySystemStore[s.GetComponentType()] = &s;
if(s.GetBaseType() != StringId())
{
mTypeHierarchy.insert(std::make_pair(s.GetBaseType(), s.GetComponentType()));
}
s.OnAddedToEntityManager(*this);
EntitySystemAddedMessage msg;
msg.SetComponentType(s.GetComponentType());
msg.SetComponentTypeString(GetStringFromSID(s.GetComponentType()));
EmitMessage(msg);
return true;
}
void MapSystem::OnSetComponentProperties(const Message& m)
{
const SetComponentPropertiesMessage& msg = static_cast<const SetComponentPropertiesMessage&>(m);
ComponentType ctype = dtEntity::SIDHash(msg.GetComponentType());
std::string uniqueid = msg.GetEntityUniqueId();
MapSystem* ms;
GetEntityManager().GetEntitySystem(MapComponent::TYPE, ms);
EntityId id = ms->GetEntityIdByUniqueId(uniqueid);
if(id == 0)
{
LOG_ERROR("Entity not found for SetComponentPropertiesMessage!");
return;
}
Component* component;
bool found = GetEntityManager().GetComponent(id, ctype, component);
if(!found)
{
LOG_WARNING("Cannot process SetComponentProperties message. Component not found: "
+ msg.GetComponentType());
return;
}
const PropertyGroup& props = msg.GetComponentProperties();
for(PropertyGroup::const_iterator i = props.begin(); i != props.end(); ++i)
{
Property* target = component->Get(i->first);
if(!target)
{
LOG_ERROR(
"Cannot process SetComponentProperties message. Component "
<< msg.GetComponentType()
<< " has no property named "
<< GetStringFromSID(i->first)
);
continue;
}
target->SetFrom(*i->second);
#if CALL_ONPROPERTYCHANGED_METHOD
component->OnPropertyChanged(i->first, *target);
#endif
}
component->Finished();
}
void ComponentPluginManager::UnloadAllPlugins(EntityManager& em)
{
for(PluginFactoryMap::iterator i = mFactories.begin(); i != mFactories.end(); ++i)
{
ComponentType ctype = i->first;
if(em.HasEntitySystem(ctype))
{
dtEntity::EntitySystem* es = em.GetEntitySystem(ctype);
if(es == NULL || !em.RemoveEntitySystem(*es))
{
LOG_ERROR("Could not cleanly remove entity system " << GetStringFromSID(ctype));
}
else
{
delete es;
}
}
}
}
bool EntityManager::CreateComponent(EntityId eid, ComponentType id, Component*& component)
{
EntitySystem* es = NULL;
if(!GetEntitySystem(id, es))
{
EntitySystemRequestCallbacks::iterator i;
for(i = mEntitySystemRequestCallbacks.begin(); i != mEntitySystemRequestCallbacks.end(); ++i)
{
if((*i)->CreateEntitySystem(this, id))
{
bool success = GetEntitySystem(id, es);
assert(success);
break;
}
}
if(es == NULL)
{
LOG_ERROR("Could not add component: no entity system of type " + GetStringFromSID(id));
return false;
}
}
return es->CreateComponent(eid, component);
}
bool EntityManager::CloneEntity(EntityId target, EntityId origin)
{
bool success = true;
std::vector<Component*> comps;
for(EntitySystemStore::iterator i = mEntitySystemStore.begin();
i != mEntitySystemStore.end(); ++i)
{
EntitySystem* sys = i->second;
if(sys->AllowComponentCreationBySpawner())
{
Component* c;
if(sys->GetComponent(origin, c))
{
comps.push_back(c);
}
}
}
// first create all components in target
for(std::vector<Component*>::iterator i = comps.begin(); i != comps.end(); ++i)
{
Component* origincomp = *i;
Component* newcomp;
if(!CreateComponent(target, origincomp->GetType(), newcomp))
{
LOG_ERROR("Could not clone component " << GetStringFromSID(origincomp->GetType()));
success = false;
}
}
// then configure them
for(std::vector<Component*>::iterator i = comps.begin(); i != comps.end(); ++i)
{
Component* origincomp = *i;
Component* clonecomp;
if(!GetComponent(target, origincomp->GetType(), clonecomp))
{
LOG_ERROR("Error in clone entity, could not find cloned component?!?");
success = false;
continue;
}
const PropertyGroup& props = origincomp->Get();
for(PropertyGroup::const_iterator i = props.begin(); i != props.end(); ++i)
{
Property* prp = clonecomp->Get(i->first);
if(prp)
{
prp->SetFrom(*i->second);
#if CALL_ONPROPERTYCHANGED_METHOD
clonecomp->OnPropertyChanged(i->first, *prp);
#endif
}
else
{
LOG_ERROR("Error cloning: Property does not exist in target");
success = false;
}
}
}
// then configure them
for(std::vector<Component*>::iterator i = comps.begin(); i != comps.end(); ++i)
{
Component* origincomp = *i;
Component* clonecomp;
if(!GetComponent(target, origincomp->GetType(), clonecomp))
{
LOG_ERROR("Error in clone entity, could not find cloned component?!?");
success = false;
continue;
}
clonecomp->Finished();
}
return success;
}
bool EntityManager::GetDerived(EntityId eid, ComponentType ctype, Component*& comp) const
{
std::pair<TypeHierarchyMap::const_iterator, TypeHierarchyMap::const_iterator> keyRange;
keyRange = mTypeHierarchy.equal_range(ctype);
TypeHierarchyMap::const_iterator it = keyRange.first;
while(it != keyRange.second)
{
dtEntity::EntitySystem* es;
bool success = this->GetEntitySystem(it->second, es);
if(!success)
{
LOG_ERROR("Error in type hierarchy structure! Cannot find entity system " << GetStringFromSID(it->second));
continue;
}
if(es->GetComponent(eid, comp))
{
return true;
}
if(GetDerived(eid, es->GetComponentType(), comp))
{
return true;
}
++it;
}
return false;
}
void PropertyContainer::InitFrom(const PropertyContainer& other)
{
for(PropertyGroup::const_iterator i = other.mValue.begin(); i != other.mValue.end(); ++i)
{
Property* own = Get(i->first);
if(own == NULL)
{
LOG_ERROR("Error in InitFrom: PropertyContainer has no property named " << GetStringFromSID(i->first));
}
else
{
own->SetFrom(*i->second);
}
}
}
bool ComponentPluginManager::StartEntitySystem(EntityManager& em, ComponentType ctype)
{
if(em.HasEntitySystem(ctype))
{
return true;
}
LOG_DEBUG("Starting entity system " << GetStringFromSID(ctype));
ComponentPluginFactory* factory = GetPluginFactory(ctype);
if(factory == NULL)
{
LOG_DEBUG("Cannot start entity system "
<< dtEntity::GetStringFromSID(ctype) << ": no factory found");
return false;
}
// start all plugins this plugin depends on
std::list<ComponentType> deps;
factory->GetDependencies(deps);
while(!deps.empty())
{
ComponentType dependency = deps.front();
deps.pop_front();
if(em.HasEntitySystem(dependency))
{
continue;
}
// check if dependency can be fulfilled
if(!FactoryExists(dependency))
{
LOG_ERROR("Cannot start plugin " << dtEntity::GetStringFromSID(ctype) << ": It depends on plugin "
<< GetStringFromSID(dependency) << " which was not found.");
return false;
}
// only start dependency if it is not running now
if(!em.HasEntitySystem(dependency))
{
StartEntitySystem(em, dependency);
}
}
// use factory to create the plugin
EntitySystem* es;
bool success = factory->Create(&em, es);
if(success)
{
// call, although no properties were set yet
es->Finished();
LOG_DEBUG("Created entity system of type " << GetStringFromSID(ctype));
em.AddEntitySystem(*es);
return true;
}
else
{
LOG_ERROR("Error starting entity system " << dtEntity::GetStringFromSID(ctype));
return false;
}
}
