/// <summary>
/// Calculates the tile indexes that need to be loaded when this chunk is active.
/// </summary>
/// <param name="chunks"></param>
/// <param name="maxChunksX"></param>
///
public void StoreIndexesOfSurroundingChunks(Chunk[] chunks, int maxChunksX)
{
// Put the surrounding chunks in a list.
List<Chunk> surroundingChunks = new List<Chunk>();
int startingChunk = Index - maxChunksX - 4;
int selectionSize = 8;
for (int h = 0; h < selectionSize; h++)
{
for (int w = 0; w < selectionSize; w++)
{
int current = startingChunk + (h * maxChunksX + w);
if (current >= 0 && current < chunks.Length)
surroundingChunks.Add(chunks[current]);
}
}
// Make one array containing all indexes of surrounding chunks.
int chunkCapacity = Chunk.DefaultSize * Chunk.DefaultSize;
List<int> indexesSurroundingChunk = new List<int>();
foreach (Chunk c in surroundingChunks)
{
int[] chunkIndexes = c.GetTileIndexes();
foreach (int i in chunkIndexes)
{
indexesSurroundingChunk.Add(i);
}
}
_indexesAround = indexesSurroundingChunk.ToArray();
}
public void ConvertToChunks(int worldWidth, int worldHeight)
{
// Validate data.
if (worldWidth % Chunk.DefaultSize != 0 || worldHeight % Chunk.DefaultSize != 0)
{
throw new ArgumentException("This level file version is no longer supported. It has dimensions that cannot be divided into chunks.");
}
this._worldHeight = worldHeight;
this._worldWidth = worldWidth;
// Calculates the amount of chunks that need to be created.
_maxChunksX = worldWidth / Chunk.DefaultSize;
_maxChunksY = worldHeight / Chunk.DefaultSize;
_chunks = new Chunk[_maxChunksX * _maxChunksY];
for (int i = 0; i < _chunks.Length; i++)
{
_chunks[i] = new Chunk(i);
}
SplitTiles();
}
/// <summary>
/// Gathers all the indexes of the visible chunks around the camera.
/// </summary>
/// <returns>Visible indexes of tiles in chunks.</returns>
public int[] GetVisibleIndexes()
{
Camera camera = GameWorld.Instance.Camera;
if (camera == null)
return new int[0];
_activeChunk = GetChunk((int)camera.InvertedCoords.X, (int)camera.InvertedCoords.Y);
// Chunk activeChunk = GetChunk(128 * Main.Tilesize, 128 * Main.Tilesize);
return _activeChunk.GetSurroundIndexes();
}
