int MapTileLayer::_tileRegion(const Coordinate& a, const Coordinate& b, int lod, bool async)
{
MapLoader* loader = MapViewLayer::Context.Loader;
auto ai = loader->getTileIndex(a, lod);
auto bi = loader->getTileIndex(b, lod);
Coordinate size = loader->getTileSize(lod);
cocos2d::log("Map rebuild (%d,%d) (%d,%d)", ai.first, ai.second, bi.first, bi.second);
int tilesNotYetLoaded = 0;
for(int i = ai.second; i <= bi.second; ++i) // y axis
{
for(int j = ai.first; j <= bi.first; ++j) // x axis
{
Coordinate position = Coordinate(j*size.x, i*size.y);
const MapTileInfo& tileInfo = loader->getMapTileInfo({j, i}, lod);
tilesNotYetLoaded += addTile(tileInfo, position, size, async);
}
}
return tilesNotYetLoaded;
}
void MapTileLayer::tileRegion(const Coordinate& a, const Coordinate& b, int lod)
{
MapLoader* loader = MapViewLayer::Context.Loader;
auto ai = loader->getTileIndex(a, lod);
auto bi = loader->getTileIndex(b, lod);
if(ai == m_indexA && bi == m_indexB && m_lod == lod){
// don't rebuild map
return;
}
removeAllChildren();
m_indexA = ai;
m_indexB = bi;
m_lod = lod;
int tilesPending = _tileRegion(a, b, lod, true);
if(tilesPending > 0)
{
_tileRegion(a, b, lod+1, false);
}
}