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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
/* based on original los code in LosHandler.{cpp,h} and RadarHandler.{cpp,h} */
#ifndef LOS_MAP_H
#define LOS_MAP_H
#include <vector>
#include "System/type2.h"
#include "System/myMath.h"
struct SLosInstance;
/// map containing counts of how many units have Line Of Sight (LOS) to each square
class CLosMap
{
public:
CLosMap(int2 size_, bool sendReadmapEvents_, const float* heightmap_, const int2 mapDims)
: size(size_)
, LOS2HEIGHT(mapDims / size)
, losmap(size.x * size.y, 0)
, sendReadmapEvents(sendReadmapEvents_)
, heightmap(heightmap_)
{ }
public:
/// circular area, for airLosMap, circular radar maps, jammer maps, ...
void AddCircle(SLosInstance* instance, int amount);
/// arbitrary area, for losMap, non-circular radar maps, ...
void AddRaycast(SLosInstance* instance, int amount);
/// arbitrary area, for losMap, non-circular radar maps, ...
void PrepareRaycast(SLosInstance* instance) const;
public:
int At(int2 p) const {
p.x = Clamp(p.x, 0, size.x - 1);
p.y = Clamp(p.y, 0, size.y - 1);
return losmap[p.y * size.x + p.x];
}
// FIXME temp fix for CBaseGroundDrawer and AI interface, which need raw data
unsigned short& front() { return losmap.front(); }
private:
void LosAdd(SLosInstance* instance) const;
void UnsafeLosAdd(SLosInstance* instance) const;
void SafeLosAdd(SLosInstance* instance) const;
void AddSquaresToInstance(SLosInstance* li, const std::vector<char>& squaresMap) const;
protected:
const int2 size;
const int2 LOS2HEIGHT;
std::vector<unsigned short> losmap;
bool sendReadmapEvents;
const float* const heightmap;
};
#endif // LOS_MAP_H
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