public ILandChunk GetLandChunkAt(int x, int y)
{
ILandChunk result = null;
int offsetX = x - this.currentChunksArea.Left;
int offsetY = y - this.currentChunksArea.Top;
if (offsetX >= 0 && offsetY >= 0)
{
int chunkX = offsetX / CHUNK_SIZE;
int chunkY = offsetY / CHUNK_SIZE;
if (chunkY < this.landChunkArea.Count &&
chunkX < this.landChunkArea[0].Count)
{
offsetX %= CHUNK_SIZE;
offsetY %= CHUNK_SIZE;
LandChunkContainer container = this.landChunkArea[chunkY][chunkX];
if (container.LandChunk != null)
{
result = container.LandChunk;
}
}
}
return(result);
}
private void PrepareChunksUpdated(List <LandChunkContainer> chunksRemoved, List <LandChunkContainer> chunksAdded)
{
foreach (LandChunkContainer container in chunksRemoved)
{
this.landChunksToRemove.Add(container.Area);
/*if (container.LandChunk != null
* && this.currentLoadedLandChunks.ContainsKey(container.Area)
* && this.landChunksCache.Contains(container.LandChunk) == false)
* {
* this.landChunksToRemove.Add(container.Area);
* }
* else if(this.landChunkLoader.IsLandChunkLoading(container.Area) || this.pendingLandChunksImported.ContainsKey(container.Area) == false)
* {
* this.landChunksToRemove.Add(container.Area);
* }*/
}
List <LandChunkContainer> subChunksAddedList = new List <LandChunkContainer>();
foreach (LandChunkContainer container in chunksAdded)
{
this.mainMutex.WaitOne();
// Order is important
if (this.landChunkLoader.IsLandChunkLoading(container.Area) == false &&
this.pendingLandChunksImported.ContainsKey(container.Area) == false)
{
this.mainMutex.ReleaseMutex();
if (this.currentLoadedLandChunks.ContainsKey(container.Area))
{
LandChunkContainer landChunkContainer = this.currentLoadedLandChunks[container.Area];
ILandChunk landChunkCache = this.landChunksCache.FirstOrDefault(pElem => pElem.Area == container.Area);
if (landChunkCache != null)
{
this.landChunksCache.Remove(landChunkCache);
container.LandChunk = landChunkContainer.LandChunk;
landChunkContainer.LandChunk = null;
this.currentLoadedLandChunks[container.Area] = container;
}
}
else
{
subChunksAddedList.Add(container);
}
}
else
{
this.mainMutex.ReleaseMutex();
}
this.landChunksToRemove.Remove(container.Area);
}
this.landChunkLoader.RequestChunk(subChunksAddedList);
}
private void UpdateLandChunks()
{
this.mainMutex.WaitOne();
IEnumerable <Tuple <LandChunkContainer, ILandChunk> > tuplesImported = this.pendingLandChunksImported.Values.ToList();
this.mainMutex.ReleaseMutex();
List <ILandChunk> realLandChunksToRemove = new List <ILandChunk>();
List <IntRect> firstLandChunksToRemove = this.landChunksToRemove.ToList();
HashSet <ILandChunk> realLandChunksToImport = new HashSet <ILandChunk>();
foreach (Tuple <LandChunkContainer, ILandChunk> tupleImported in tuplesImported)
{
tupleImported.Item1.LandChunk = tupleImported.Item2;
this.currentLoadedLandChunks.Add(tupleImported.Item1.Area, tupleImported.Item1);
realLandChunksToImport.Add(tupleImported.Item2);
this.mainMutex.WaitOne();
this.pendingLandChunksImported.Remove(tupleImported.Item1.Area);
this.mainMutex.ReleaseMutex();
}
foreach (IntRect areaToRemove in firstLandChunksToRemove)
{
if (this.currentLoadedLandChunks.ContainsKey(areaToRemove))
{
LandChunkContainer containerToRemove = this.currentLoadedLandChunks[areaToRemove];
ILandChunk landChunkToRemove;
this.landChunksCache.Add(containerToRemove.LandChunk);
if (this.landChunksCache.Count > NB_MAX_CACHE_CHUNK)
{
ILandChunk landChunkFront = this.landChunksCache.ElementAt(0);
this.landChunksCache.RemoveAt(0);
this.currentLoadedLandChunks.Remove(landChunkFront.Area);
landChunkToRemove = landChunkFront;
}
else
{
landChunkToRemove = null;
}
this.landChunksToRemove.Remove(containerToRemove.LandChunk.Area);
if (landChunkToRemove != null)
{
if (realLandChunksToImport.Contains(landChunkToRemove))
{
realLandChunksToImport.Remove(landChunkToRemove);
}
else
{
realLandChunksToRemove.Add(landChunkToRemove);
}
}
}
}
foreach (ILandChunk landChunkReleased in realLandChunksToRemove)
{
this.NotifyChunkRemoved(landChunkReleased);
}
foreach (ILandChunk landChunkImported in realLandChunksToImport)
{
this.NotifyChunkAdded(landChunkImported);
}
if (realLandChunksToImport.Count > 0 || realLandChunksToRemove.Count > 0)
{
this.NotifyAllChunksUpdated();
}
}
public void OnFocusAreaChanged(Vector2f areaPosition, Vector2f areaSize)
{
List <LandChunkContainer> removedChunk = new List <LandChunkContainer>();
List <LandChunkContainer> addedChunk = new List <LandChunkContainer>();
IntRect newArea = new IntRect(
(int)(areaPosition.X - areaSize.X / 2 + 1),
(int)(areaPosition.Y - areaSize.Y / 2 + 1),
(int)(areaSize.X + 1),
(int)(areaSize.Y + 1));
IntRect newChunksArea = new IntRect(
(int)Math.Floor(((double)newArea.Left) / CHUNK_SIZE) - 1,
(int)Math.Floor(((double)newArea.Top) / CHUNK_SIZE) - 1,
newArea.Width / CHUNK_SIZE + 4,
newArea.Height / CHUNK_SIZE + 4);
// Remove out bounds chunks
int minNbRemove = Math.Min(newChunksArea.Top - this.currentChunksArea.Top, this.currentChunksArea.Height);
int maxNbRemove = Math.Min((this.currentChunksArea.Top + this.currentChunksArea.Height) - (newChunksArea.Top + newChunksArea.Height), this.currentChunksArea.Height);
if (minNbRemove > 0)
{
List <List <LandChunkContainer> > subLandChunkList = this.landChunkArea.GetRange(0, minNbRemove);
foreach (List <LandChunkContainer> row in subLandChunkList)
{
removedChunk.AddRange(row);
Console.WriteLine(row.Count + " up chunk removed");
}
landChunkArea.RemoveRange(0, minNbRemove);
}
if (maxNbRemove > 0)
{
List <List <LandChunkContainer> > subLandChunkList = this.landChunkArea.GetRange(landChunkArea.Count - maxNbRemove, maxNbRemove);
foreach (List <LandChunkContainer> row in subLandChunkList)
{
removedChunk.AddRange(row);
Console.WriteLine(row.Count + " down chunk removed");
}
landChunkArea.RemoveRange(landChunkArea.Count - maxNbRemove, maxNbRemove);
}
minNbRemove = Math.Min(newChunksArea.Left - this.currentChunksArea.Left, this.currentChunksArea.Width);
maxNbRemove = Math.Min((this.currentChunksArea.Left + this.currentChunksArea.Width) - (newChunksArea.Left + newChunksArea.Width), this.currentChunksArea.Width);
foreach (List <LandChunkContainer> row in this.landChunkArea)
{
if (minNbRemove > 0)
{
removedChunk.AddRange(row.GetRange(0, minNbRemove));
row.RemoveRange(0, minNbRemove);
Console.WriteLine("left chunk removed");
}
if (maxNbRemove > 0)
{
removedChunk.AddRange(row.GetRange(landChunkArea.Count - maxNbRemove, maxNbRemove));
row.RemoveRange(landChunkArea.Count - maxNbRemove, maxNbRemove);
Console.WriteLine("right chunk removed");
}
}
// Add new chunks
int minNbAdd = Math.Min(this.currentChunksArea.Left - newChunksArea.Left, newChunksArea.Width);
int maxNbAdd = Math.Min((newChunksArea.Left + newChunksArea.Width) - (this.currentChunksArea.Left + this.currentChunksArea.Width), newChunksArea.Width);
int i = 0;
if (minNbAdd > 0)
{
foreach (List <LandChunkContainer> row in this.landChunkArea)
{
List <LandChunkContainer> chunksAdded = new List <LandChunkContainer>();
for (int j = 0; j < minNbAdd; j++)
{
IntRect area = new IntRect((newChunksArea.Left + j) * CHUNK_SIZE, (newChunksArea.Top + i) * CHUNK_SIZE, CHUNK_SIZE, CHUNK_SIZE);
LandChunkContainer container = new LandChunkContainer(area);
chunksAdded.Add(container);
}
addedChunk.AddRange(chunksAdded);
row.InsertRange(0, chunksAdded);
Console.WriteLine(chunksAdded.Count + " left chunk added");
i++;
}
}
i = 0;
if (maxNbAdd > 0)
{
foreach (List <LandChunkContainer> row in this.landChunkArea)
{
List <LandChunkContainer> chunksAdded = new List <LandChunkContainer>();
for (int j = 0; j < maxNbAdd; j++)
{
IntRect area = new IntRect((newChunksArea.Left + row.Count + j) * CHUNK_SIZE, (newChunksArea.Top + i) * CHUNK_SIZE, CHUNK_SIZE, CHUNK_SIZE);
LandChunkContainer container = new LandChunkContainer(area);
chunksAdded.Add(container);
}
addedChunk.AddRange(chunksAdded);
row.InsertRange(row.Count, chunksAdded);
Console.WriteLine(chunksAdded.Count + " right chunk added");
i++;
}
}
minNbAdd = Math.Min(currentChunksArea.Top - newChunksArea.Top, newChunksArea.Height);
maxNbAdd = Math.Min((newChunksArea.Top + newChunksArea.Height) - (currentChunksArea.Top + currentChunksArea.Height), newChunksArea.Height);
if (minNbAdd > 0)
{
for (i = minNbAdd - 1; i >= 0; i--)
{
List <LandChunkContainer> chunksAdded = new List <LandChunkContainer>();
for (int j = 0; j < newChunksArea.Width; j++)
{
IntRect area = new IntRect((newChunksArea.Left + j) * CHUNK_SIZE, (newChunksArea.Top + i) * CHUNK_SIZE, CHUNK_SIZE, CHUNK_SIZE);
LandChunkContainer container = new LandChunkContainer(area);
chunksAdded.Add(container);
}
addedChunk.AddRange(chunksAdded);
this.landChunkArea.Insert(0, chunksAdded);
Console.WriteLine(chunksAdded.Count + " top chunk added");
}
}
if (maxNbAdd > 0)
{
for (i = 0; i < maxNbAdd; i++)
{
List <LandChunkContainer> chunksAdded = new List <LandChunkContainer>();
for (int j = 0; j < newChunksArea.Width; j++)
{
IntRect area = new IntRect((newChunksArea.Left + j) * CHUNK_SIZE, (newChunksArea.Top + (newChunksArea.Height - maxNbAdd) + i) * CHUNK_SIZE, CHUNK_SIZE, CHUNK_SIZE);
LandChunkContainer container = new LandChunkContainer(area);
chunksAdded.Add(container);
}
addedChunk.AddRange(chunksAdded);
this.landChunkArea.Insert(this.landChunkArea.Count, chunksAdded);
Console.WriteLine(chunksAdded.Count + " down chunk added");
}
}
this.PrepareChunksUpdated(removedChunk, addedChunk);
this.currentChunksArea = newChunksArea;
}