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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef PATH_FLOWMAP_HDR
#define PATH_FLOWMAP_HDR
#include <set>
#include <vector>
#include "System/type2.h"
#include "System/float3.h"
struct MoveDef;
class CSolidObject;
class PathFlowMap {
public:
struct FlowCell {
FlowCell(): numObjects(0) {
}
float3 flowVector;
float3 cellCenter; // WS
unsigned int numObjects;
};
static PathFlowMap* GetInstance();
static void FreeInstance(PathFlowMap*);
PathFlowMap(unsigned int scalex, unsigned int scalez);
~PathFlowMap();
void Update();
void AddFlow(const CSolidObject*);
const float3& GetFlowVec(unsigned int hmx, unsigned int hmz) const;
float GetFlowCost(unsigned int x, unsigned int z, const MoveDef&, unsigned int opt) const;
float GetMaxFlow() const { return maxFlow[fBufferIdx]; }
unsigned int GetFrontBufferIdx() const { return fBufferIdx; }
unsigned int GetBackBufferIdx() const { return bBufferIdx; }
const std::vector<FlowCell>& GetFrontBuffer() { return buffers[fBufferIdx]; }
const std::vector<FlowCell>& GetBackBuffer() { return buffers[bBufferIdx]; }
private:
unsigned int GetCellIdx(const CSolidObject*) const;
std::vector<FlowCell> buffers[2];
std::set<unsigned int> indices[2];
std::vector<float3> pathOptDirs;
unsigned int fBufferIdx;
unsigned int bBufferIdx;
unsigned int xscale, xsize, xfact;
unsigned int zscale, zsize, zfact;
float maxFlow[2];
};
#endif
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