leper
27e5c5b25a
Reviewed By: Itms Differential Revision: https://code.wildfiregames.com/D499 This was SVN commit r19930.
68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
/* Copyright (C) 2017 Wildfire Games.
|
|
* This file is part of 0 A.D.
|
|
*
|
|
* 0 A.D. is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 0 A.D. is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef INCLUDED_DYNAMICSUBSCRIPTION
|
|
#define INCLUDED_DYNAMICSUBSCRIPTION
|
|
|
|
#include "IComponent.h"
|
|
|
|
#include <set>
|
|
|
|
/**
|
|
* A list of components that are dynamically subscribed to a particular
|
|
* message. The components list is sorted by (entity_id, ComponentTypeId),
|
|
* with no duplicates.
|
|
*
|
|
* To cope with changes to the subscription list while a message is still
|
|
* being broadcast, all changes are stored in the added/removed sets. The
|
|
* next time a message is sent, they will be merged into the main components
|
|
* list.
|
|
*/
|
|
class CDynamicSubscription
|
|
{
|
|
struct CompareIComponent
|
|
{
|
|
bool operator()(const IComponent* cmpA, const IComponent* cmpB) const
|
|
{
|
|
entity_id_t entityA = cmpA->GetEntityId();
|
|
entity_id_t entityB = cmpB->GetEntityId();
|
|
if (entityA < entityB)
|
|
return true;
|
|
if (entityB < entityA)
|
|
return false;
|
|
int cidA = cmpA->GetComponentTypeId();
|
|
int cidB = cmpB->GetComponentTypeId();
|
|
if (cidA < cidB)
|
|
return true;
|
|
return false;
|
|
}
|
|
};
|
|
public:
|
|
void Add(IComponent* cmp);
|
|
void Remove(IComponent* cmp);
|
|
void Flatten();
|
|
const std::vector<IComponent*>& GetComponents();
|
|
void DebugDump();
|
|
|
|
private:
|
|
std::vector<IComponent*> m_Components; // always in CompareIComponent order
|
|
std::set<IComponent*, CompareIComponent> m_Added;
|
|
std::set<IComponent*, CompareIComponent> m_Removed;
|
|
};
|
|
|
|
#endif // INCLUDED_DYNAMICSUBSCRIPTION
|