312 lines
12 KiB
C++
312 lines
12 KiB
C++
#include "ContinentBuilder.h"
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#include "TileBuilder.h"
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#include "Geometry.h"
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#include "Constants.h"
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#include "Utils.h"
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#include "Cache.h"
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#include "ADT.h"
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#include "WDT.h"
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#include "Recast.h"
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#include "RecastAlloc.h"
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#include "DetourNavMeshBuilder.h"
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#include <ace/Synch.h>
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TileBuilder::TileBuilder(ContinentBuilder* _cBuilder, std::string world, int x, int y, uint32 mapId) :
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World(world), X(x), Y(y), MapId(mapId), _Geometry(NULL), DataSize(0), cBuilder(_cBuilder)
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{
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/*
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Test, non-working values
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// Cell Size = TileSize / TileVoxelSize
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// 1800 = TileVoxelSize
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Config.cs = Constants::TileSize / 1800;
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// Cell Height
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Config.ch = 0.4f;
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// Min Region Area = 20^2
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Config.minRegionArea = 20*20;
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// Merge Region Area = 40^2
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Config.mergeRegionArea = 40*40;
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Config.tileSize = Constants::TileSize / 4;
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Config.walkableSlopeAngle = 50.0f;
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Config.detailSampleDist = 3.0f;
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Config.detailSampleMaxError = 1.25f;
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Config.walkableClimb = floorf(1.0f / Config.ch);
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Config.walkableHeight = ceilf(1.652778f / Config.ch);
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Config.walkableRadius = ceilf(0.2951389f / Config.cs);
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Config.maxEdgeLen = Config.walkableRadius * 8;
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Config.borderSize = Config.walkableRadius + 4;
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Config.width = 1800 + Config.borderSize * 2;
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Config.height = 1800 + Config.borderSize * 2;
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Config.maxVertsPerPoly = 6;
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Config.maxSimplificationError = 1.3f;
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*/
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// All are in UNIT metrics!
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memset(&Config, 0, sizeof(rcConfig));
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Config.maxVertsPerPoly = DT_VERTS_PER_POLYGON;
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Config.cs = Constants::BaseUnitDim;
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Config.ch = Constants::BaseUnitDim;
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Config.walkableSlopeAngle = 60.0f;
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Config.tileSize = Constants::VertexPerTile;
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Config.walkableRadius = 1;
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Config.borderSize = Config.walkableRadius + 3;
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Config.maxEdgeLen = Constants::VertexPerTile + 1; //anything bigger than tileSize
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Config.walkableHeight = 3;
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Config.walkableClimb = 2; // keep less than walkableHeight
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Config.minRegionArea = rcSqr(60);
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Config.mergeRegionArea = rcSqr(50);
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Config.maxSimplificationError = 2.0f; // eliminates most jagged edges (tinny polygons)
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Config.detailSampleDist = Config.cs * 64;
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Config.detailSampleMaxError = Config.ch * 2;
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Context = new rcContext;
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}
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void TileBuilder::CalculateTileBounds( float*& bmin, float*& bmax, dtNavMeshParams& /*navMeshParams*/ )
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{
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bmin = new float[3];
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bmax = new float[3];
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bmin[0] = Constants::Origin[0] /*navMeshParams.orig[0]*/ + (Constants::TileSize * X);
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bmin[2] = Constants::Origin[2] /*navMeshParams.orig[2]*/ + (Constants::TileSize * Y);
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bmax[0] = Constants::Origin[0] /*navMeshParams.orig[0]*/ + (Constants::TileSize * (X + 1));
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bmax[2] = Constants::Origin[2] /*navMeshParams.orig[2]*/ + (Constants::TileSize * (Y + 1));
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}
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uint8* TileBuilder::Build(bool dbg, dtNavMeshParams& navMeshParams)
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{
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_Geometry = new Geometry();
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_Geometry->Transform = true;
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ADT* adt = new ADT(Utils::GetAdtPath(World, X, Y));
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adt->Read();
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_Geometry->AddAdt(adt);
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delete adt;
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if (_Geometry->Vertices.empty() && _Geometry->Triangles.empty())
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return NULL;
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// again, we load everything - wasteful but who cares
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for (int ty = Y - 2; ty <= Y + 2; ty++)
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{
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for (int tx = X - 2; tx <= X + 2; tx++)
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{
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// don't load main tile again
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if (tx == X && ty == Y)
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continue;
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ADT* _adt = new ADT(Utils::GetAdtPath(World, tx, ty));
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// If this condition is met, it means that this wdt does not contain the ADT
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if (!_adt->Data->Stream)
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{
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delete _adt;
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continue;
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}
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_adt->Read();
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_Geometry->AddAdt(_adt);
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delete _adt;
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}
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}
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if (dbg)
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{
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char buff[100];
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sprintf(buff, "mmaps/%s_%02u%02u.obj", World.c_str(), Y, X);
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FILE* debug = fopen(buff, "wb");
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for (uint32 i = 0; i < _Geometry->Vertices.size(); ++i)
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fprintf(debug, "v %f %f %f\n", _Geometry->Vertices[i].x, _Geometry->Vertices[i].y, _Geometry->Vertices[i].z);
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for (uint32 i = 0; i < _Geometry->Triangles.size(); ++i)
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fprintf(debug, "f %i %i %i\n", _Geometry->Triangles[i].V0 + 1, _Geometry->Triangles[i].V1 + 1, _Geometry->Triangles[i].V2 + 1);
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fclose(debug);
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}
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uint32 numVerts = _Geometry->Vertices.size();
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uint32 numTris = _Geometry->Triangles.size();
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float* vertices;
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int* triangles;
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uint8* areas;
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_Geometry->GetRawData(vertices, triangles, areas);
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_Geometry->Vertices.clear();
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_Geometry->Triangles.clear();
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rcVcopy(Config.bmin, cBuilder->bmin);
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rcVcopy(Config.bmax, cBuilder->bmax);
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// this sets the dimensions of the heightfield - should maybe happen before border padding
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rcCalcGridSize(Config.bmin, Config.bmax, Config.cs, &Config.width, &Config.height);
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// Initialize per tile config.
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rcConfig tileCfg = Config;
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tileCfg.width = Config.tileSize + Config.borderSize * 2;
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tileCfg.height = Config.tileSize + Config.borderSize * 2;
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// merge per tile poly and detail meshes
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rcPolyMesh** pmmerge = new rcPolyMesh*[Constants::TilesPerMap * Constants::TilesPerMap];
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rcPolyMeshDetail** dmmerge = new rcPolyMeshDetail*[Constants::TilesPerMap * Constants::TilesPerMap];
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int nmerge = 0;
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for (int y = 0; y < Constants::TilesPerMap; ++y)
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{
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for (int x = 0; x < Constants::TilesPerMap; ++x)
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{
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// Calculate the per tile bounding box.
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tileCfg.bmin[0] = Config.bmin[0] + float(x * Config.tileSize - Config.borderSize) * Config.cs;
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tileCfg.bmin[2] = Config.bmin[2] + float(y * Config.tileSize - Config.borderSize) * Config.cs;
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tileCfg.bmax[0] = Config.bmin[0] + float((x + 1) * Config.tileSize + Config.borderSize) * Config.cs;
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tileCfg.bmax[2] = Config.bmin[2] + float((y + 1) * Config.tileSize + Config.borderSize) * Config.cs;
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rcHeightfield* hf = rcAllocHeightfield();
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rcCreateHeightfield(Context, *hf, tileCfg.width, tileCfg.height, tileCfg.bmin, tileCfg.bmax, tileCfg.cs, tileCfg.ch);
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rcClearUnwalkableTriangles(Context, tileCfg.walkableSlopeAngle, vertices, numVerts, triangles, numTris, areas);
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rcRasterizeTriangles(Context, vertices, numVerts, triangles, areas, numTris, *hf, Config.walkableClimb);
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// Once all geometry is rasterized, we do initial pass of filtering to
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// remove unwanted overhangs caused by the conservative rasterization
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// as well as filter spans where the character cannot possibly stand.
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rcFilterLowHangingWalkableObstacles(Context, Config.walkableClimb, *hf);
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rcFilterLedgeSpans(Context, tileCfg.walkableHeight, tileCfg.walkableClimb, *hf);
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rcFilterWalkableLowHeightSpans(Context, tileCfg.walkableHeight, *hf);
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// Compact the heightfield so that it is faster to handle from now on.
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// This will result in more cache coherent data as well as the neighbours
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// between walkable cells will be calculated.
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rcCompactHeightfield* chf = rcAllocCompactHeightfield();
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rcBuildCompactHeightfield(Context, tileCfg.walkableHeight, tileCfg.walkableClimb, *hf, *chf);
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rcFreeHeightField(hf);
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// Erode the walkable area by agent radius.
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rcErodeWalkableArea(Context, Config.walkableRadius, *chf);
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// Prepare for region partitioning, by calculating distance field along the walkable surface.
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rcBuildDistanceField(Context, *chf);
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// Partition the walkable surface into simple regions without holes.
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rcBuildRegions(Context, *chf, tileCfg.borderSize, tileCfg.minRegionArea, tileCfg.mergeRegionArea);
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// Create contours.
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rcContourSet* cset = rcAllocContourSet();
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rcBuildContours(Context, *chf, tileCfg.maxSimplificationError, tileCfg.maxEdgeLen, *cset);
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// Build polygon navmesh from the contours.
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rcPolyMesh* pmesh = rcAllocPolyMesh();
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rcBuildPolyMesh(Context, *cset, tileCfg.maxVertsPerPoly, *pmesh);
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// Build detail mesh.
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rcPolyMeshDetail* dmesh = rcAllocPolyMeshDetail();
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rcBuildPolyMeshDetail(Context, *pmesh, *chf, tileCfg.detailSampleDist, tileCfg.detailSampleMaxError, *dmesh);
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// Free memory
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rcFreeCompactHeightfield(chf);
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rcFreeContourSet(cset);
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pmmerge[nmerge] = pmesh;
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dmmerge[nmerge] = dmesh;
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++nmerge;
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}
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}
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rcPolyMesh* pmesh = rcAllocPolyMesh();
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rcMergePolyMeshes(Context, pmmerge, nmerge, *pmesh);
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rcPolyMeshDetail* dmesh = rcAllocPolyMeshDetail();
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rcMergePolyMeshDetails(Context, dmmerge, nmerge, *dmesh);
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delete[] pmmerge;
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delete[] dmmerge;
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printf("[%02i,%02i] Meshes merged!\n", X, Y);
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// Remove padding from the polymesh data. (Remove this odditity)
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for (int i = 0; i < pmesh->nverts; ++i)
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{
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unsigned short* v = &pmesh->verts[i * 3];
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v[0] -= (unsigned short)Config.borderSize;
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v[2] -= (unsigned short)Config.borderSize;
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}
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// Set flags according to area types (e.g. Swim for Water)
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for (int i = 0; i < pmesh->npolys; i++)
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{
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if (pmesh->areas[i] == Constants::POLY_AREA_ROAD || pmesh->areas[i] == Constants::POLY_AREA_TERRAIN)
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pmesh->flags[i] = Constants::POLY_FLAG_WALK;
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else if (pmesh->areas[i] == Constants::POLY_AREA_WATER)
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pmesh->flags[i] = Constants::POLY_FLAG_SWIM;
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}
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dtNavMeshCreateParams params;
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memset(¶ms, 0, sizeof(params));
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// PolyMesh data
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params.verts = pmesh->verts;
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params.vertCount = pmesh->nverts;
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params.polys = pmesh->polys;
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params.polyAreas = pmesh->areas;
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params.polyFlags = pmesh->flags;
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params.polyCount = pmesh->npolys;
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params.nvp = pmesh->nvp;
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// PolyMeshDetail data
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params.detailMeshes = dmesh->meshes;
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params.detailVerts = dmesh->verts;
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params.detailVertsCount = dmesh->nverts;
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params.detailTris = dmesh->tris;
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params.detailTriCount = dmesh->ntris;
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rcVcopy(params.bmin, pmesh->bmin);
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rcVcopy(params.bmax, pmesh->bmax);
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// General settings
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params.ch = Config.ch;
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params.cs = Config.cs;
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params.walkableClimb = Constants::BaseUnitDim * Config.walkableClimb;
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params.walkableHeight = Constants::BaseUnitDim * Config.walkableHeight;
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params.walkableRadius = Constants::BaseUnitDim * Config.walkableRadius;
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params.tileX = (((cBuilder->bmin[0] + cBuilder->bmax[0]) / 2) - navMeshParams.orig[0]) / Constants::TileSize;
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params.tileY = (((cBuilder->bmin[2] + cBuilder->bmax[2]) / 2) - navMeshParams.orig[2]) / Constants::TileSize;
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rcVcopy(params.bmin, cBuilder->bmin);
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rcVcopy(params.bmax, cBuilder->bmax);
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// Offmesh-connection settings
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params.offMeshConCount = 0; // none for now
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params.tileSize = Constants::VertexPerMap;
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if (!params.polyCount || !params.polys || Constants::TilesPerMap * Constants::TilesPerMap == params.polyCount)
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{
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// we have flat tiles with no actual geometry - don't build those, its useless
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// keep in mind that we do output those into debug info
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// drop tiles with only exact count - some tiles may have geometry while having less tiles
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printf("[%02i,%02i] No polygons to build on tile, skipping.\n", X, Y);
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rcFreePolyMesh(pmesh);
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rcFreePolyMeshDetail(dmesh);
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delete areas;
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delete triangles;
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delete vertices;
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return NULL;
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}
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int navDataSize;
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uint8* navData;
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printf("[%02i,%02i] Creating the navmesh with %i vertices, %i polys, %i triangles!\n", X, Y, pmesh->nverts, pmesh->npolys, dmesh->ntris);
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bool result = dtCreateNavMeshData(¶ms, &navData, &navDataSize);
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// Free some memory
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rcFreePolyMesh(pmesh);
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rcFreePolyMeshDetail(dmesh);
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delete areas;
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delete triangles;
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delete vertices;
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if (result)
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{
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printf("[%02i,%02i] NavMesh created, size %i!\n", X, Y, navDataSize);
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DataSize = navDataSize;
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return navData;
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}
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return NULL;
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}
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TileBuilder::~TileBuilder()
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{
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delete Context;
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delete _Geometry;
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}
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