private void OnTypeSet(VoxelType NewType)
{
// Changing a voxel is actually a relatively rare event, so we can afford to do a bit of
// bookkeeping here.
var previous = _cache_Chunk.Data.Types[_cache_Index];
var blockDestroyed = false;
// Change actual data
_cache_Chunk.Data.Types[_cache_Index] = (byte)NewType.ID;
_cache_Chunk.Data.Health[_cache_Index] = (byte)NewType.StartingHealth;
// Changing the voxel type clears grass.
_cache_Chunk.Data.GrassType[_cache_Index] = 0;
// Did we go from empty to filled or vice versa? Update filled counter.
if (previous == 0 && NewType.ID != 0)
{
_cache_Chunk.Data.VoxelsPresentInSlice[Coordinate.Y] += 1;
}
else if (previous != 0 && NewType.ID == 0)
{
blockDestroyed = true;
_cache_Chunk.Data.VoxelsPresentInSlice[Coordinate.Y] -= 1;
}
if (Coordinate.Y < VoxelConstants.ChunkSizeY - 1)
{
InvalidateVoxel(_cache_Chunk, Coordinate, Coordinate.Y + 1);
}
InvalidateVoxel(_cache_Chunk, Coordinate, Coordinate.Y);
// Propogate sunlight (or lack thereof) downwards.
if (Coordinate.Y > 0)
{
var localCoordinate = Coordinate.GetLocalVoxelCoordinate();
var Y = localCoordinate.Y - 1;
var sunColor = (NewType.ID == 0 || NewType.IsTransparent) ? this.SunColor : 0;
var below = VoxelHandle.InvalidHandle;
while (Y >= 0)
{
below = new VoxelHandle(Chunk, new LocalVoxelCoordinate(localCoordinate.X, Y,
localCoordinate.Z));
below.SunColor = sunColor;
InvalidateVoxel(Chunk, new GlobalVoxelCoordinate(Coordinate.X, Y, Coordinate.Z), Y);
if (!below.IsEmpty && !below.Type.IsTransparent)
{
break;
}
Y -= 1;
}
}
if (blockDestroyed)
{
// Invoke old voxel listener.
_cache_Chunk.NotifyDestroyed(Coordinate.GetLocalVoxelCoordinate());
// Reveal!
VoxelHelpers.RadiusReveal(_cache_Chunk.Manager.ChunkData, this, 10);
}
// Invoke new voxel listener.
_cache_Chunk.Manager.NotifyChangedVoxel(new VoxelChangeEvent
{
Type = VoxelChangeEventType.VoxelTypeChanged,
Voxel = this,
OriginalVoxelType = previous,
NewVoxelType = NewType.ID
});
}