private static DepthSlice PackDepthSlice(ref RawDepthData rawDepthData, int dataStart, int dataEnd)
{
DepthSlice depthSlice = new DepthSlice();
depthSlice.xOffset = rawDepthData.startX + dataStart;
depthSlice.zOffset = int.MaxValue;
for (int i = dataStart; i < dataEnd; i++)
{
Debug.Assert(rawDepthData.depthFront[i] <= rawDepthData.depthBack[i]);
Debug.Assert(rawDepthData.depthBack[i] != int.MinValue);
if (rawDepthData.depthFront[i] < depthSlice.zOffset)
{
depthSlice.zOffset = rawDepthData.depthFront[i];
}
}
depthSlice.depths = new FrontBack[dataEnd - dataStart];
for (int i = 0; i < depthSlice.depths.Length; i++)
{
depthSlice.depths[i].front = (byte)System.Math.Min(byte.MaxValue, rawDepthData.depthFront[i + dataStart] - depthSlice.zOffset);
depthSlice.depths[i].back = (byte)System.Math.Min(byte.MaxValue, rawDepthData.depthBack[i + dataStart] - depthSlice.zOffset);
}
return(depthSlice);
}
static private DepthSlice MakeBaseDepthSlice(Heightmap heightmap)
{
RawDepthData rawDepthData = GetRawDepthData(heightmap, 0, heightmap.StartX - 1, heightmap.Width + 2); // <- Guarantuee missing ranges on each end (for extrapolation)
if (rawDepthData.IsBlank)
{
return(DepthSlice.CreateBlank(heightmap.StartX, heightmap.StartZ));
}
// Fill in missing data and do extrapolation:
rawDepthData.RepairMissingRanges();
int dataStart = rawDepthData.missingDataRanges[0].index + rawDepthData.missingDataRanges[0].count;
int dataEnd = rawDepthData.missingDataRanges[rawDepthData.missingDataRanges.Count - 1].index;
// Bring extrapolations into the legitimate data range:
if (rawDepthData.depthFront[dataStart - 1] == rawDepthData.depthBack[dataStart - 1])
{
dataStart--;
}
if (rawDepthData.depthFront[dataEnd] == rawDepthData.depthBack[dataEnd])
{
dataEnd++;
}
return(PackDepthSlice(ref rawDepthData, dataStart, dataEnd));
}
public static DepthBounds CreateForFlat(AnimationSet animationSet)
{
Debug.Assert(animationSet.Heightmap == null); // <- should be going through other path
DepthSlice ds = new DepthSlice();
ds.xOffset = animationSet.physicsStartX;
ds.zOffset = animationSet.physicsStartZ;
int width = animationSet.physicsEndX - animationSet.physicsStartX;
ds.depths = new FrontBack[width];
if (animationSet.flatDirection != 0)
{
for (int i = 0; i < width; i++)
{
int depth = i;
if (animationSet.flatDirection == Oblique.Left)
{
depth = width - 1 - i;
}
byte d = (byte)System.Math.Min(byte.MaxValue, depth);
ds.depths[i].front = d;
ds.depths[i].back = d;
}
}
return(new DepthBounds {
slices = new[] { ds }
}); // <- single slice
}
static DepthSlice MakeNonBaseDepthSlice(Heightmap heightmap, int yOffset, DepthSlice previousSlice)
{
Debug.Assert(yOffset != 0);
Debug.Assert(previousSlice != null);
RawDepthData rawDepthData = GetRawDepthData(heightmap, yOffset, previousSlice.xOffset, previousSlice.Width);
if (rawDepthData.IsBlank)
{
return(DepthSlice.CreateBlank(previousSlice.xOffset, previousSlice.zOffset));
}
DepthSlice depthSlice = PackDepthSlice(ref rawDepthData, 0, previousSlice.Width);
// Pull up missing data from previous layers:
foreach (var missingRange in rawDepthData.missingDataRanges)
{
for (int j = 0; j < missingRange.count; j++)
{
int i = j + missingRange.index;
var belowBounds = previousSlice.depths[i];
if (belowBounds.front == belowBounds.back && missingRange.count == 1) // <- Indicates the lower layer is an extrapolation (keep it that way)
{
depthSlice.depths[i] = belowBounds;
}
else // Lower bounds is a surface, encode an "above" bounds
{
depthSlice.depths[i] = new FrontBack {
back = belowBounds.back, front = (byte)System.Math.Min(byte.MaxValue, (int)belowBounds.back + 1)
}
};
}
}
return(depthSlice);
}
#endregion
}
/// <summary>Deserialize.</summary>
public DepthBounds(AnimationDeserializeContext context)
{
int heightCount = context.br.ReadInt32();
heights = (heightCount == 0) ? null : context.br.ReadBytes(heightCount);
slices = new DepthSlice[heightCount + 1];
for (int i = 0; i < slices.Length; i++)
{
slices[i] = new DepthSlice()
{
xOffset = context.br.ReadInt32(),
zOffset = context.br.ReadInt32(),
depths = new FrontBack[context.br.ReadInt32()],
};
for (int j = 0; j < slices[i].depths.Length; j++)
{
slices[i].depths[j].front = context.br.ReadByte();
slices[i].depths[j].back = context.br.ReadByte();
}
}
}
public static DepthBounds CreateForHeightmap(Heightmap heightmap)
{
if (heightmap.heightmapData.Data == null) // <- Empty heightmap makes me sad
{
return(new DepthBounds());
}
if (!heightmap.IsObjectHeightmap) // <- Don't generate depth bounds for levels
{
return(new DepthBounds());
}
// Determine what heights are used in the heightmap, and only generate depth slices for those heights
bool[] usedHeights = new bool[256];
for (int i = 0; i < heightmap.heightmapData.Data.Length; i++)
{
usedHeights[heightmap.heightmapData.Data[i]] = true;
}
List <byte> heights = new List <byte>();
List <DepthSlice> slices = new List <DepthSlice>();
DepthSlice previousSlice = null;
int previousHeight = 0;
for (int y = 1; y < usedHeights.Length; y++)
{
if (!usedHeights[y])
{
continue;
}
Debug.Assert(y - 1 <= byte.MaxValue);
if (previousSlice == null)
{
// First slice always starts at height = 0, and its starting height is implicit (not stored in heights):
Debug.Assert(slices.Count == 0);
slices.Add(previousSlice = MakeBaseDepthSlice(heightmap));
}
else
{
slices.Add(previousSlice = MakeNonBaseDepthSlice(heightmap, y - 1, previousSlice)); // <- note that the slice is wrapped around height at y-1
heights.Add((byte)previousHeight);
}
previousHeight = y;
}
if (slices.Count == 0)
{
return(new DepthBounds()); // <- no physics
}
else
{
Debug.Assert(heights.Count == slices.Count - 1);
return(new DepthBounds
{
heights = heights.Count == 0 ? null : heights.ToArray(),
slices = slices.ToArray(),
});
}
}
