public void TestChunkStorage()
{
_chunkStorage[0, 0] = _chunk;
Assert.IsTrue(_chunkStorage.ContainsKey(0,0)); // check if we can index back the chunk.
Assert.AreEqual(_chunk, _chunkStorage[0, 0]); // check if we can access it back.
_chunkStorage.Remove(0, 0);
Assert.IsFalse(_chunkStorage.ContainsKey(0, 0)); // check if it's correctly removed.
_chunkStorage[-1, -1] = new Chunk(new Vector2Int(-1, -1));
Assert.IsTrue(_chunkStorage.ContainsKey(-1, -1)); // check if we can index negative coordinates for chunks.
}
public void Init()
{
_game = new SampleGame();
this._config = new EngineConfig();
if(Engine.Instance!=null) // if there exists already an engine instance, dispose it first.
Engine.Instance.Dispose();
this._engine = new Engine(this._game, this._config);
this._chunkStorage = new ChunkStorage(_game);
this._chunk = new Chunk(new Vector2Int(0, 0));
}
private void RecacheChunks()
{
this._player.CurrentChunk = this.GetChunk((int) _player.Position.X, (int) _player.Position.Z);
for (int z = -CacheRange; z <= CacheRange; z++)
{
for (int x = -CacheRange; x <= CacheRange; x++)
{
if (this._chunkStorage.ContainsKey(this._player.CurrentChunk.RelativePosition.X + x, this._player.CurrentChunk.RelativePosition.Z + z))
continue;
var chunk = new Chunk(new Vector2Int(this._player.CurrentChunk.RelativePosition.X + x, this._player.CurrentChunk.RelativePosition.Z + z));
this._chunkStorage[chunk.RelativePosition.X, chunk.RelativePosition.Z] = chunk;
}
}
var southWestEdge = new Vector2Int(this._player.CurrentChunk.RelativePosition.X - ViewRange, this._player.CurrentChunk.RelativePosition.Z - ViewRange);
var northEastEdge = new Vector2Int(this._player.CurrentChunk.RelativePosition.X + ViewRange, this._player.CurrentChunk.RelativePosition.Z + ViewRange);
BoundingBox = new BoundingBox(
new Vector3(southWestEdge.X*Chunk.WidthInBlocks, 0, southWestEdge.Z*Chunk.LenghtInBlocks),
new Vector3((northEastEdge.X + 1)*Chunk.WidthInBlocks, Chunk.HeightInBlocks,
(northEastEdge.Z + 1)*Chunk.LenghtInBlocks));
}
private void ProcessChunkInViewRange(Chunk chunk)
{
if (chunk.ChunkState == ChunkState.Ready || chunk.ChunkState == ChunkState.AwaitingRemoval)
return;
switch (chunk.ChunkState) // switch on the chunk state.
{
case ChunkState.AwaitingGenerate:
Generator.Generate(chunk);
break;
case ChunkState.AwaitingLighting:
case ChunkState.AwaitingRelighting:
Lightning.Process(chunk);
break;
case ChunkState.AwaitingBuild:
case ChunkState.AwaitingRebuild:
this.VertexBuilder.Build(chunk);
break;
default:
break;
}
}
private void ProcessChunkInCacheRange(Chunk chunk)
{
if (chunk.ChunkState == ChunkState.Ready || chunk.ChunkState != ChunkState.AwaitingGenerate)
return;
switch (chunk.ChunkState) // switch on the chunk state.
{
case ChunkState.AwaitingGenerate:
Generator.Generate(chunk);
break;
case ChunkState.AwaitingLighting:
Lightning.Process(chunk);
break;
default:
break;
}
}
public bool IsChunkInViewRange(Chunk chunk)
{
return ViewRangeBoundingBox.Contains(chunk.BoundingBox) == ContainmentType.Contains;
}
/// <summary>
/// Returns block index by relative position of block in chunk.
/// </summary>
/// <param name="chunk">The chunk block belongs to.</param>
/// <param name="x">Block's relative x position in chunk.</param>
/// <param name="y">Block's y position in chunk.</param>
/// <param name="z">Block's relative x position in chunk.</param>
/// <returns></returns>
public static int BlockIndexByRelativePosition(Chunk chunk, byte x, byte y, byte z)
{
var xIndex = chunk.WorldPosition.X + x;
var zIndex = chunk.WorldPosition.Z + z;
var wrapX = xIndex%CacheWidthInBlocks;
if (wrapX < 0)
wrapX += CacheWidthInBlocks;
var wrapZ = zIndex%CacheLenghtInBlocks;
if (wrapZ < 0)
wrapZ += CacheLenghtInBlocks;
var flattenIndex = wrapX * XStep + wrapZ * ZStep + y;
return flattenIndex;
}
public void SpawnPlayer(Vector2Int relativePosition)
{
//Profiler.Start("terrain-generation");
for (int z = -ChunkCache.CacheRange; z <= ChunkCache.CacheRange; z++)
{
for (int x = -ChunkCache.CacheRange; x <= ChunkCache.CacheRange; x++)
{
var chunk = new Chunk(new Vector2Int(relativePosition.X + x, relativePosition.Z + z));
this.Chunks[chunk.RelativePosition.X, chunk.RelativePosition.Z] = chunk;
if (chunk.RelativePosition == relativePosition) this._player.CurrentChunk = chunk;
}
}
this.Chunks.SouthWestEdge = new Vector2Int(relativePosition.X - ChunkCache.ViewRange,
relativePosition.Z - ChunkCache.ViewRange);
this.Chunks.NorthEastEdge = new Vector2Int(relativePosition.X + ChunkCache.ViewRange,
relativePosition.Z + ChunkCache.ViewRange);
ChunkCache.BoundingBox =
new BoundingBox(
new Vector3(this.Chunks.SouthWestEdge.X*Chunk.WidthInBlocks, 0, this.Chunks.SouthWestEdge.Z*Chunk.LenghtInBlocks),
new Vector3((this.Chunks.NorthEastEdge.X + 1)*Chunk.WidthInBlocks, Chunk.HeightInBlocks, (this.Chunks.NorthEastEdge.Z + 1)*Chunk.LenghtInBlocks));
}
/// <summary>
/// Processes chunks in cache range and generates or lightens them.
/// </summary>
/// <param name="chunk"><see cref="Chunk"/></param>
/// <remarks>Note that chunks in cache range only gets generated or lightened. They are built once they get in view-range.</remarks>
private void ProcessChunkInCacheRange(Chunk chunk)
{
if (chunk.ChunkState != ChunkState.AwaitingGenerate && chunk.ChunkState != ChunkState.AwaitingLighting)
return; // only generate or lighten the chunks.
// note: we don't care about chunks that await re-lighting because re-lightig only occurs a chunk gets modified.
switch (chunk.ChunkState)
{
case ChunkState.AwaitingGenerate:
Generator.Generate(chunk);
break;
case ChunkState.AwaitingLighting:
Lightning.Process(chunk);
break;
default:
break;
}
}