/// <summary>
/// Calculates the next affected grid vertices.
/// </summary>
/// <param name="source">The current flooded grid vertex.</param>
public void Flood(GridVertex source, int currentSteps)
{
if (Range - currentSteps <= 0)
{
return;
}
Game game = Unit.Engine3D.Source as Game;
foreach (GridVertex target in source.Adjacent())
{
if (target.IsInsideBoundaries(game.Terrain.Size))
{
double h = Math.Abs(game.Terrain.HeightMap[target.U, target.V] - game.Terrain.HeightMap[source.U, source.V]);
if (h <= Unit.Stability)
{
if (!AffectedPaths.ContainsKey(target))
{
AffectedPaths.Add(target, source);
Flood(target, currentSteps + 1);
}
else if (currentSteps < TraceSteps(target))
{
AffectedPaths.Remove(target);
AffectedPaths.Add(target, source);
Flood(target, currentSteps + 1);
}
}
}
}
}
/// <summary>
/// The grid faces occupied by this unit.
/// </summary>
/// <returns></returns>
public HashSet <GridFace> OccupiedFaces(int size, GridVertex pos)
{
switch (size)
{
case 1:
return(pos.Touches());
case 2:
HashSet <GridFace> faces = new HashSet <GridFace>();
foreach (GridVertex vert in pos.Adjacent())
{
faces.UnionWith(vert.Touches());
}
return(faces);
default:
return(null);
}
}