Recast/Detour - 16 tiles per ADT - Proper method to save/load?

[Tanaris4]

All-

Since I was able to dump 1 mesh per ADT, I now am working towards everyone's reco on using 16 tiles per ADT, but I'm running into a few problems (can't read them back into 1 tile) and would like to know how I can correct this. Here is how I'm saving the 16 nav meshes to one file:

    char fileName[2048];
	sprintf(fileName,"%s/%i_%i.mesh", [directory UTF8String], tx, ty);
	FILE* fp = fopen(fileName, "wb");
    if (!fp)
		return ;
    
	dtNavMeshParams navMeshParams;
	navMeshParams.tileWidth = GRID_SIZE / GridDiv;
	navMeshParams.tileHeight = GRID_SIZE / GridDiv;
	navMeshParams.orig[0] = -(32 * GRID_SIZE);
	navMeshParams.orig[1] = -(32 * GRID_SIZE);
	navMeshParams.orig[2] = -(32 * GRID_SIZE);
	navMeshParams.maxTiles =  1000;
	navMeshParams.maxPolys =  MaxPoly;
    
    
    NavMeshSetHeader header;
	header.magic = NAVMESHSET_MAGIC;
	header.version = NAVMESHSET_VERSION;
	header.numTiles = tileNum;
	
	memcpy(&header.params, &navMeshParams, sizeof(dtNavMeshParams));
	fwrite(&header, sizeof(NavMeshSetHeader), 1, fp);
    
    for ( int i = 0; i < tileNum; i++ ){
		NavMeshTileHeader tileHeader;
		tileHeader.tileRef = 0;
		tileHeader.dataSize = meshData[i].dataSize;
		fwrite(&tileHeader, sizeof(tileHeader), 1, fp);
		fwrite(meshData[i].data, meshData[i].dataSize, 1, fp);
		dtFree(meshData[i].data);
	}
    
	fclose(fp);

Now the issue I'm running into is how to read these in, as as soon as I read the first of the 16, it takes over that (x,y) within the dtNavMesh. Here is how I'm reading them in:

    // Read tiles.
	for (int i = 0; i < header.numTiles; ++i){
		NavMeshTileHeader tileHeader;
		fread(&tileHeader, sizeof(tileHeader), 1, fp);
		if (!tileHeader.dataSize)
			break;
        
        NSLog(@" %d: %d", i, tileHeader.dataSize);
        
		unsigned char* data = (unsigned char*)dtAlloc(tileHeader.dataSize, DT_ALLOC_PERM);
		if (!data) break;
		memset(data, 0, tileHeader.dataSize);
		fread(data, tileHeader.dataSize, 1, fp);
		
        dtTileRef* tile = new dtTileRef();
		dtStatus dtResult = _navMesh->addTile(data, tileHeader.dataSize, DT_TILE_FREE_DATA, 0, tile);
        if ( dtResult != DT_SUCCESS ){
            NSLog(@"Error: could not load into navmesh 0x%X", dtResult);
            
            if (dtStatusDetail(dtResult, DT_OUT_OF_MEMORY))
            {
            }
            dtFree(data);
            return false;
        }
	}

Now addTile returns DT_FAILURE on the second tile read since there is already a tile at (x,y) due to the first loop. How can I fix this? I'm at a loss as to how I should read these in now.

Thanks!
~ Tanaris

[guizmows]

just load them like miko is doing but set navMeshParams.origin navMeshParams.tileWidth and navMeshParams.tileHeight correctly

[Tanaris4]

just load them like miko is doing but set navMeshParams.origin navMeshParams.tileWidth and navMeshParams.tileHeight correctly

What do u mean correctly?

---------- Post added at 03:36 PM ---------- Previous post was at 03:03 PM ----------

Think I'm there



Edit 2: Still working on it, for some reason I can't path now and the edges are jagged... hmmmm


Edit 3: Fixed, I was using a tile size of 1800 when I shouldn't have been doing that - opps

[dook123]

Would you be willing to explain how you fixed your problem? I believe I have the same problem with my navmesh and loading multiple tiles.

[dook123]

It would be nice to read what you did to solve this issue.

[Tanaris4]

I was just using the wrong tile width. I had it set to 1800, instead of width + bordersize*2.