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In some cases you want to store property data for each instance. Often you'll use member data on the entities themselves for this. But in some cases you don't want to bloat the entity class with data for seldomly used properties. In these cases you can instead use the PropertyInstanceState class, and keep a static instance of this per property.
58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/*
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Copyright (C) 2014 Erik Ogenvik
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef DOMAINPROPERTY_H_
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#define DOMAINPROPERTY_H_
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#include "common/Property.h"
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#include "common/PropertyInstanceState.h"
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class Domain;
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/**
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* @brief Specifies that an entity contains a "Domain".
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*
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* This makes the entity responsible for physics and sight checking, effectively giving the entity
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* it's own space.
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* Normally you wouldn't use nested domains, since the effects (currently) are undefined.
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*
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* The data defines the kind of domain. The available options are:
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* * void: no movement or sight allowed
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* * physical: movement and sights behave like in the real world
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*/
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class DomainProperty : public Property<std::string>
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{
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public:
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explicit DomainProperty();
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explicit DomainProperty(const DomainProperty& rhs);
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virtual void install(LocatedEntity *, const std::string &);
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virtual void remove(LocatedEntity *, const std::string &);
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virtual DomainProperty * copy() const;
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virtual void apply(LocatedEntity *);
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Domain* getDomain(const LocatedEntity *) const;
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private:
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static PropertyInstanceState<Domain> sInstanceState;
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};
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#endif /* DOMAINPROPERTY_H_ */
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