//有借鉴参考
private IEnumerator SpawnMissingChunks(int originX, int originY, int originZ, int range)
{
int heightRange = Engine.HeightRange;
//清空更新队列updatequeue
ChunkUpdateQueue = new List <Chunk>();
//flag chunk不在范围内
ChunksToDestroy = new List <Chunk>();
foreach (Chunk chunk in Chunks.Values)
{
if (Vector2.Distance(new Vector2(chunk.ChunkIndex.x, chunk.ChunkIndex.z), new Vector2(originX, originZ)) > range + Engine.ChunkDespawnDistance)
{
ChunksToDestroy.Add(chunk);
}
else if (Mathf.Abs(chunk.ChunkIndex.y - originY) > range + Engine.ChunkDespawnDistance)
{
ChunksToDestroy.Add(chunk);
}
}
// main loop==看不懂了，原注释保留
for (int currentLoop = 0; currentLoop <= range; currentLoop++)
{
for (var x = originX - currentLoop; x <= originX + currentLoop; x++)
{ // iterate through all potential chunk indexes within range
for (var y = originY - currentLoop; y <= originY + currentLoop; y++)
{
for (var z = originZ - currentLoop; z <= originZ + currentLoop; z++)
{
if (Mathf.Abs(y) <= heightRange)
{ // skip chunks outside of height range
if (Mathf.Abs(originX - x) + Mathf.Abs(originZ - z) < range * 1.3f)
{ // skip corners
// pause loop while the queue is not empty
while (ChunkUpdateQueue.Count > 0)
{
ProcessChunkQueue();
if (frameStopwatch.Elapsed.TotalSeconds >= targetFrameDuration)
{
yield return(new WaitForEndOfFrame());
}
}
Chunk currentChunk = ChunkManager.GetChunkComponent(x, y, z);
// chunks that already exist but haven't had their mesh built yet should be added to the update queue
if (currentChunk != null)
{
// chunks without meshes spawned by server should be changed to regular chunks
if (currentChunk.DisableMesh || currentChunk.EnableTimeout)
{
currentChunk.DisableMesh = false;
currentChunk.EnableTimeout = false;
currentChunk.Fresh = true;
}
if (currentChunk.Fresh)
{
// spawn neighbor chunks
for (int d = 0; d < 6; d++)
{
Index neighborIndex = currentChunk.ChunkIndex.GetAdjacentIndex((Direction)d);
GameObject neighborChunk = GetChunk(neighborIndex);
if (neighborChunk == null)
{
neighborChunk = Instantiate(ChunkObject, neighborIndex.ToVector3(), transform.rotation) as GameObject;
}
currentChunk.NeighborChunks[d] = neighborChunk.GetComponent <Chunk>(); // always add the neighbor to NeighborChunks, in case it's not there already
// continue loop in next frame if the current frame time is exceeded
if (frameStopwatch.Elapsed.TotalSeconds >= targetFrameDuration)
{
yield return(new WaitForEndOfFrame());
}
if (StopSpawning)
{
EndSequence();
yield break;
}
}
if (currentChunk != null)
{
currentChunk.AddToQueueWhenReady();
}
}
}
else
{ // if chunk doesn't exist, create new chunk (it adds itself to the update queue when its data is ready)
// spawn chunk
GameObject newChunk = Instantiate(ChunkObject, new Vector3(x, y, z), transform.rotation) as GameObject; // Spawn a new chunk.
currentChunk = newChunk.GetComponent <Chunk>();
// spawn neighbor chunks if they're not spawned yet
for (int d = 0; d < 6; d++)
{
Index neighborIndex = currentChunk.ChunkIndex.GetAdjacentIndex((Direction)d);
GameObject neighborChunk = GetChunk(neighborIndex);
if (neighborChunk == null)
{
neighborChunk = Instantiate(ChunkObject, neighborIndex.ToVector3(), transform.rotation) as GameObject;
}
currentChunk.NeighborChunks[d] = neighborChunk.GetComponent <Chunk>(); // always add the neighbor to NeighborChunks, in case it's not there already
// continue loop in next frame if the current frame time is exceeded
if (frameStopwatch.Elapsed.TotalSeconds >= targetFrameDuration)
{
yield return(new WaitForEndOfFrame());
}
if (StopSpawning)
{
EndSequence();
yield break;
}
}
if (currentChunk != null)
{
currentChunk.AddToQueueWhenReady();
}
}
}
}
// continue loop in next frame if the current frame time is exceeded
if (frameStopwatch.Elapsed.TotalSeconds >= targetFrameDuration)
{
yield return(new WaitForEndOfFrame());
}
if (StopSpawning)
{
EndSequence();
yield break;
}
}
}
}
}
yield return(new WaitForEndOfFrame());
EndSequence();
}
private void OnDestroy()
{
ChunkManager.UnregisterChunk(this);
}
//以下的check都没有必要
// ==== initialization ====
public void Awake()
{
Engine.EngineInstance = this;
Engine.ChunkManagerInstance = GetComponent <ChunkManager>();
WorldName = lWorldName;
UpdateWorldPath();
BlocksPath = lBlocksPath;
Engine.Blocks = lBlocks;
TargetFPS = lTargetFPS;
MaxChunkSaves = lMaxChunkSaves;
MaxChunkDataRequests = lMaxChunkDataRequests;
TextureUnit = lTextureUnit;
TexturePadding = lTexturePadding;
GenerateColliders = lGenerateColliders;
ShowBorderFaces = lShowBorderFaces;
SaveVoxelData = lSaveVoxelData;
GenerateMeshes = lGenerateMeshes;
ChunkSpawnDistance = lChunkSpawnDistance;
HeightRange = lHeightRange;
ChunkDespawnDistance = lChunkDespawnDistance;
SendCameraLookEvents = lSendCameraLookEvents;
SendCursorEvents = lSendCursorEvents;
ChunkSideLength = lChunkSideLength;
SquaredSideLength = lChunkSideLength * lChunkSideLength;
ChunkDataFiles.LoadedRegions = new Dictionary <string, string[]>();
ChunkDataFiles.TempChunkData = new Dictionary <string, string>();
if (lChunkTimeout <= 0.00001f)
{
EnableChunkTimeout = false;
}
else
{
EnableChunkTimeout = true;
ChunkTimeout = lChunkTimeout;
}
for (int i = 0; i < 31; i++)
{
Physics.IgnoreLayerCollision(i, 26);
}
// check block array
if (Engine.Blocks.Length < 1)
{
Debug.LogError("CubeMaster: The blocks array is empty! Use the Block Editor to update the blocks array.");
Debug.Break();
}
if (Engine.Blocks[0] == null)
{
Debug.LogError("CubeMaster: Cannot find the empty block prefab (id 0)!");
Debug.Break();
}
else if (Engine.Blocks[0].GetComponent <Voxel>() == null)
{
Debug.LogError("CubeMaster: Voxel id 0 does not have the Voxel component attached!");
Debug.Break();
}
// check settings
if (Engine.ChunkSideLength < 1)
{
Debug.LogError("CubeMaster: Chunk side length must be greater than 0!");
Debug.Break();
}
if (Engine.ChunkSpawnDistance < 1)
{
Engine.ChunkSpawnDistance = 0;
Debug.LogWarning("CubeMaster: Chunk spawn distance is 0. No chunks will spawn!");
}
if (Engine.HeightRange < 0)
{
Engine.HeightRange = 0;
Debug.LogWarning("CubeMaster: Chunk height range can't be a negative number! Setting chunk height range to 0.");
}
if (Engine.MaxChunkDataRequests < 0)
{
Engine.MaxChunkDataRequests = 0;
Debug.LogWarning("CubeMaster: Max chunk data requests can't be a negative number! Setting max chunk data requests to 0.");
}
// check materials
GameObject chunkPrefab = GetComponent <ChunkManager>().ChunkObject;
int materialCount = chunkPrefab.GetComponent <Renderer>().sharedMaterials.Length - 1;
for (ushort i = 0; i < Engine.Blocks.Length; i++)
{
if (Engine.Blocks[i] != null)
{
Voxel voxel = Engine.Blocks[i].GetComponent <Voxel>();
if (voxel.VSubmeshIndex < 0)
{
Debug.LogError("CubeMaster: Voxel " + i + " has a material index lower than 0! Material index must be 0 or greater.");
Debug.Break();
}
if (voxel.VSubmeshIndex > materialCount)
{
Debug.LogError("CubeMaster: Voxel " + i + " uses material index " + voxel.VSubmeshIndex + ", but the chunk prefab only has " + (materialCount + 1) + " material(s) attached. Set a lower material index or attach more materials to the chunk prefab.");
Debug.Break();
}
}
}
// check anti-aliasing
if (QualitySettings.antiAliasing > 0)
{
Debug.LogWarning("CubeMaster: Anti-aliasing is enabled. This may cause seam lines to appear between blocks. If you see lines between blocks, try disabling anti-aliasing, switching to deferred rendering path, or adding some texture padding in the engine settings.");
}
Engine.Initialized = true;
}