private Dictionary <EntityUid, HashSet <Vector2i> > GetChunksForViewers(
HashSet <EntityUid> viewers,
int chunkSize,
ObjectPool <HashSet <Vector2i> > indexPool,
ObjectPool <Dictionary <EntityUid, HashSet <Vector2i> > > viewerPool,
float viewEnlargement,
EntityQuery <TransformComponent> xformQuery)
{
Dictionary <EntityUid, HashSet <Vector2i> > chunks = viewerPool.Get();
DebugTools.Assert(chunks.Count == 0);
foreach (var viewerUid in viewers)
{
var xform = xformQuery.GetComponent(viewerUid);
var pos = _transform.GetWorldPosition(xform, xformQuery);
var bounds = _baseViewBounds.Translated(pos).Enlarged(viewEnlargement);
foreach (var grid in _mapManager.FindGridsIntersecting(xform.MapID, bounds, true))
{
if (!chunks.TryGetValue(grid.GridEntityId, out var set))
{
chunks[grid.GridEntityId] = set = indexPool.Get();
DebugTools.Assert(set.Count == 0);
}
var enumerator = new ChunkIndicesEnumerator(_transform.GetInvWorldMatrix(grid.GridEntityId, xformQuery).TransformBox(bounds), chunkSize);
while (enumerator.MoveNext(out var indices))
{
set.Add(indices.Value);
}
}
}
return(chunks);
}
