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/* ResidualVM - A 3D game interpreter
*
* ResidualVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the AUTHORS
* file distributed with this source distribution.
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef STARK_SERVICES_RESOURCE_PROVIDER_H
#define STARK_SERVICES_RESOURCE_PROVIDER_H
#include "common/list.h"
#include "engines/stark/resourcereference.h"
namespace Stark {
namespace Resources {
class Level;
class Location;
class Object;
}
class ArchiveLoader;
class Current;
class Global;
class StateProvider;
/**
* Game Resource provider.
*
* Maintains a list of resource trees.
* Maintained trees are the global and the current ones.
*/
class ResourceProvider {
public:
ResourceProvider(ArchiveLoader *archiveLoader, StateProvider *stateProvider, Global *global);
/** Load the global archives and fill the global object */
void initGlobal();
/** Load the resources for the specified location */
void requestLocationChange(uint16 level, uint16 location);
/** Is a location change pending? */
bool hasLocationChangeRequest() { return _locationChangeRequest; }
void setShouldRestoreCurrentState() { _restoreCurrentState = true; }
void pushAndChangeLocation(int16 level, int16 location);
void returnToPushedLocation();
/**
* Apply a location change request.
*
* Update the global object with the new location.
* Perform the necessary resource lifecycle updates
*/
void performLocationChange();
/** Set the initial position and direction for the next location change */
void setNextLocationPosition(const ResourceReference &bookmark, int32 direction);
/** Save the current location state to the state store. */
void commitActiveLocationsState();
/** Release the global and current resources */
void shutdown();
/** Obtain the root resource for a loaded level */
Resources::Level *getLevel(uint16 level);
/** Obtain the root resource for a loaded location */
Resources::Location *getLocation(uint16 level, uint16 location);
/** Get the parent level from a currently loaded location */
Resources::Level *getLevelFromLocation(Resources::Location *location);
private:
struct PreviousLocation {
uint16 location;
uint16 level;
bool inventoryOpen;
};
void pushCurrentLocation();
void popCurrentLocation();
Common::List<PreviousLocation> _locationStack;
typedef Common::List<Current *> CurrentList;
Current *findLevel(uint16 level);
Current *findLocation(uint16 level, uint16 location);
void purgeOldLocations();
void runLocationChangeScripts(Resources::Object *resource, uint32 scriptCallMode);
void setAprilInitialPosition();
void setScrollInitialPosition();
Global *_global;
ArchiveLoader *_archiveLoader;
StateProvider *_stateProvider;
bool _locationChangeRequest;
bool _restoreCurrentState;
CurrentList _locations;
ResourceReference _nextPositionBookmarkReference;
int32 _nextDirection;
};
} // End of namespace Stark
#endif // STARK_SERVICES_RESOURCE_PROVIDER_H
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