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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef GROUNDBLOCKINGOBJECTMAP_H
#define GROUNDBLOCKINGOBJECTMAP_H
#include <map>
#include "System/creg/creg_cond.h"
#include "System/float3.h"
class CSolidObject;
typedef std::map<int, CSolidObject*> BlockingMapCell;
typedef BlockingMapCell::const_iterator BlockingMapCellIt;
typedef std::vector<BlockingMapCell> BlockingMap;
class CGroundBlockingObjectMap
{
CR_DECLARE(CGroundBlockingObjectMap);
public:
CGroundBlockingObjectMap(int numSquares) { groundBlockingMap.resize(numSquares); }
void AddGroundBlockingObject(CSolidObject* object);
void AddGroundBlockingObject(CSolidObject* object, const unsigned char* yardMap, unsigned char mask);
void RemoveGroundBlockingObject(CSolidObject* object);
void OpenBlockingYard(CSolidObject* yard, const unsigned char* yardMap);
void CloseBlockingYard(CSolidObject* yard, const unsigned char* yardMap);
bool CanCloseYard(CSolidObject* object);
// these retrieve either the top-most or the bottom-most
// object in a given cell, or NULL if the cell is empty
CSolidObject* GroundBlocked(int mapSquare, bool topMost = true);
CSolidObject* GroundBlocked(const float3& pos, bool topMost = true);
// same as GroundBlocked(), but does not bounds-check mapSquare
CSolidObject* GroundBlockedUnsafe(int mapSquare, bool topMost = true);
// for full thread safety, access via GetCell would need to be mutexed, but it appears only sim thread uses it
const BlockingMapCell& GetCell(int mapSquare) const { return groundBlockingMap[mapSquare]; }
private:
BlockingMap groundBlockingMap;
};
extern CGroundBlockingObjectMap* groundBlockingObjectMap;
#endif
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