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mapgrid.h
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/*
This file is part of Warzone 2100.
Copyright (C) 1999-2004 Eidos Interactive
Copyright (C) 2005-2019 Warzone 2100 Project
Warzone 2100 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.
Warzone 2100 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 Warzone 2100; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/** @file
* Allows querying which objects are within a given radius of a given location.
*/
#ifndef __INCLUDED_SRC_MAPGRID_H__
#define __INCLUDED_SRC_MAPGRID_H__
typedef std::vector<BASE_OBJECT *> GridList;
typedef GridList::const_iterator GridIterator;
// initialise the grid system
bool gridInitialise();
// shutdown the grid system
void gridShutDown();
// Reset the grid system. Called once per update.
// Resets seenThisTick[] to false.
void gridReset();
/// Find all objects within radius.
GridList const &gridStartIterate(int32_t x, int32_t y, uint32_t radius);
/// Find all objects within radius.
GridList const &gridStartIterateArea(int32_t x, int32_t y, uint32_t x2, uint32_t y2);
/// Find all objects within radius where object->type == OBJ_DROID && object->player == player.
GridList const &gridStartIterateDroidsByPlayer(int32_t x, int32_t y, uint32_t radius, int player);
// Used for visibility.
/// Find all objects within radius where object->seenThisTick[player] != 255.
GridList const &gridStartIterateUnseen(int32_t x, int32_t y, uint32_t radius, int player);
#endif // __INCLUDED_SRC_MAPGRID_H__