public void ClampTurnsPositiveNumberToOne()
{
float number = 1;
var want = 1f;
float got = GridMath.Clamp(number, 0, 1);
Assert.Equal(want, got);
}
public void ClampTurnsNegativeNumberToZero()
{
float number = -1;
var want = 0f;
float got = GridMath.Clamp(number, 0, 1);
Assert.Equal(want, got);
}
void UpdateChunks()
{
// Get focal point.
Vector3 targetPosition = Target.transform.position;
int3 focalChunk = GridMath.WorldToGrid(targetPosition, BlockSize);
DebugDrawChunk(GridMath.Clamp(targetPosition, BlockSize), Color.cyan);
//TODO: fix extents being treated differently (-extents is in bounds. +extents is not) and remove the +0.5 in chunk to world. Figure out a more elegant approach? maybe
Profiler.BeginSample("LevelGenerator - Queue Create Chunks");
int3 loadSize = LoadExtents * 2;
loadSize = new int3(Collapse.x ? 1 :loadSize.x, Collapse.y ? 1 :loadSize.y, Collapse.z ? 1 :loadSize.z);
float volume = loadSize.x * loadSize.y * loadSize.z;
float blockExtents = BlockSize / 2f;
// Create new chunks
for (int i = 0; i < volume; i++)
{
//still in chunk space but moved from 1d to 3d
int3 positiveChunkPosition = GridMath.IndexToPosition(i, loadSize.x,
loadSize.y);
//subtract extents to center position on focal chunk (otherwise it starts at focalChunk and extends into positive only.
int3 centeredPosition = positiveChunkPosition - new int3(Collapse.x?0:LoadExtents.x,
Collapse.y?0:LoadExtents.y, Collapse.z?0:LoadExtents.z);
int3 chunkPosition = focalChunk + centeredPosition;
//Convert to world position and add extents so the blocks corner is at the position of the chunk (chunks origin is in corner, we want it in center)
float3 chunkWorldPosition = GridMath.GridToWorld(chunkPosition, BlockSize) +
new float3(Collapse.x?0:blockExtents, Collapse.y?0:blockExtents, Collapse.z?0:blockExtents);
//Dont want to generate a block outside of the cameras view
if (!BlockInViewFrustum(chunkWorldPosition))
{
continue;
}
uint positionHash = math.hash(chunkPosition);
bool chunkExists = _validChunks.ContainsKey(positionHash);
//If we are unloading a chunk in a valid cell we need to cancel it before its too late!
if (_unloadingChunks.Contains(positionHash))
{
_unloadingChunks.Remove(positionHash);
}
//Additions
if (chunkExists)
{
//Draw existing chunk bounds
DebugDrawChunk(chunkWorldPosition, new Color(1, 1, 1, 0.25f));
}
else if (_loadingChunks.Contains(positionHash))
{
DebugDrawChunk(chunkWorldPosition, Color.green); //Draw green if busy loading
}
else
{
//Load a new chunk
_loadingChunks.Add(positionHash);
OnChunkLoadBegin(positionHash, chunkPosition, BlockSize, () =>
{
_validChunks.Add(positionHash, chunkPosition);
_loadingChunks.Remove(positionHash);
});
}
}
Profiler.EndSample();
Profiler.BeginSample("LevelGenerator - Queue Remove Chunks");
//Remove out of bounds chunks. Need to iterate over all (cant check just around valid area) to ensure they are removed even if we teleport
if (_validChunks.Count > volume)
{
List <Tuple <uint, int3> > toRemove = new List <Tuple <uint, int3> >();
foreach (var chunkKVP in _validChunks)
{
int3 pos = chunkKVP.Value;
bool alreadyUnloading = _unloadingChunks.Contains(chunkKVP.Key);
float3 worldPos = GridMath.GridToWorld(pos, BlockSize) + new float3(blockExtents);
//Dont want to keep a block outside of the bounds or the cameras view
if (!GridMath.BlockInBounds(pos, focalChunk, LoadExtents) || !BlockInViewFrustum(worldPos))
{
//Offset position so its centered
DebugDrawChunk(worldPos, Color.red);
if (!alreadyUnloading)
{
toRemove.Add(new Tuple <uint, int3>(chunkKVP.Key, chunkKVP.Value));
}
}
}
foreach (Tuple <uint, int3> data in toRemove)
{
uint hash = data.Item1;
int3 chunkPosition = data.Item2;
_unloadingChunks.Add(hash);
OnChunkUnloadBegin(hash, chunkPosition, BlockSize, () =>
{
_validChunks.Remove(hash); //only mark invalid after removal as removal is atomic and we want to still treat the chunk as active before its unloaded. //TODO: this true?
_unloadingChunks.Remove(hash);
});
}
}
Profiler.EndSample();
}
