private void OnTerrainChunkVisibilityChanged(TerrainChunk chunk, bool isVisible)
{
//Debug.Log($"Changed visibility from '{chunk}' to {(isVisible ? "visible" : "hidden")}");
if (isVisible)
{
_visibleTerrainChunks.Add(chunk);
}
else
{
_visibleTerrainChunks.Remove(chunk);
}
}
private void UpdateVisibleChunks()
{
var alreadyUpdatedChunkCoords = new HashSet <Vector2>();
for (var i = _visibleTerrainChunks.Count - 1; i >= 0; i--)
{
alreadyUpdatedChunkCoords.Add(_visibleTerrainChunks[i].Coord);
_visibleTerrainChunks[i].UpdateTerrainChunk();
}
Debug.Log($"Visible chunks: {alreadyUpdatedChunkCoords.Count}");
var currentChunkCoordX = Mathf.RoundToInt(_viewerPosition.x / _meshWorldSize);
var currentChunkCoordY = Mathf.RoundToInt(_viewerPosition.y / _meshWorldSize);
Debug.Log($"Iterating offset (x/z) from {-_chunksVisibleInViewDst} to {_chunksVisibleInViewDst} ({_chunksVisibleInViewDst * 4})");
for (var yOffset = -_chunksVisibleInViewDst; yOffset <= _chunksVisibleInViewDst; yOffset++)
{
for (var xOffset = -_chunksVisibleInViewDst; xOffset <= _chunksVisibleInViewDst; xOffset++)
{
var viewedChunkCoord = new Vector2(currentChunkCoordX + xOffset, currentChunkCoordY + yOffset);
if (!alreadyUpdatedChunkCoords.Contains(viewedChunkCoord))
{
if (_terrainChunkDictionary.ContainsKey(viewedChunkCoord))
{
//Debug.Log($"[{viewedChunkCoord.ToRoundedString()}] Updating already loaded chunk.");
_terrainChunkDictionary[viewedChunkCoord].UpdateTerrainChunk();
}
else
{
//Debug.Log($"[{viewedChunkCoord}] Loading chunk.");
var newChunk = new TerrainChunk(viewedChunkCoord, heightMapSettings, meshSettings, detailLevels,
colliderLodIndex, transform, mapMaterial);
_terrainChunkDictionary.Add(viewedChunkCoord, newChunk);
newChunk.OnVisibilityChanged += OnTerrainChunkVisibilityChanged;
newChunk.Load();
}
}
}
}
OnTerrainUpdated();
}
