/// <summary>
/// Updates central chunk to a new chunk, regenerating LoDs and loaded chunks appropriately
/// </summary>
/// <param name="newCenter">New center chunk</param>
public void UpdateCenter(Chunk newCenter)
{
if (center == newCenter)
{
return;
}
var oldCenter = center;
center = newCenter;
if (!IntCube.WithinCube(
loadedCenter,
MaxLoadedDistance,
newCenter.Coords,
MaxViewDistance
))
{
// Player needs to render chunks that were not yet loaded
// Move the IntCube of loaded chunks to fit the player
ClearFarChunks();
GenerateNewChunks(
new IntCube(loadedCenter, MaxLoadedDistance),
new IntCube(newCenter.Coords, MaxLoadedDistance)
);
loadedCenter = newCenter.Coords;
}
UpdateLODs();
}
/// <summary>
/// Generates new chunks that will complete oldArea to newArea
/// </summary>
/// <param name="oldArea">Already existing chunks</param>
/// <param name="newArea">Area that should be filled with chunks</param>
private void GenerateNewChunks(IntCube oldArea, IntCube newArea)
{
var diff = newArea.Diff(oldArea);
foreach (var coords in diff)
{
var chunk = GenerateChunk(coords);
activeChunks.Add(chunk);
}
Debug.Log("Generated new chunks: " + diff.Count);
ProcessingChunksCount = diff.Count;
}
/// <summary>
/// Disposes chunks that are too far from player
/// (farther then MaxLoadedDistance)
/// </summary>
private void ClearFarChunks()
{
int totalDeleted = 0;
for (int i = 0; i < activeChunks.Count; i++)
{
var chunk = activeChunks[i];
if (!IntCube.WithinCube(center.Coords, MaxLoadedDistance, chunk.Coords))
{
activeChunks.RemoveAt(i);
chunk.Dispose();
--i;
++totalDeleted;
}
}
Debug.Log("Removing far chunks: " + totalDeleted.ToString());
}