/// <summary>Returns an <c>HexCoords</c> for the hex in direction <c>hexside</c> from this one.</summary>
public HexCoords GetNeighbour(Hexside hexside)
{
var i = User.X & 1;
return(new HexCoords(Canon + _hexsideVectorsCanon [hexside]
, User + _hexsideVectorsUser[i][hexside]));
}
/// <inheritdoc/>
public virtual int GetDirectedCostToExit(IHex hex, Hexside hexsideExit)
{
//return hex==null ? -1
// : this[hex.Coords].StepCost(hexsideExit);
return(hex == null ? -1
: hex.StepCost(hexsideExit));
}
/// <summary>Returns an <c>HexCoords</c> for the hex in direction <c>hexside</c> from this one.</summary>
public HexCoords GetNeighbour(Hexside hexside)
{
if ((User.X % 2) == 0)
{
return(new HexCoords(Canon + HexsideVectorsCanon[(int)hexside]
, User + HexsideVectorsUserEven[(int)hexside]));
}
else
{
return(new HexCoords(Canon + HexsideVectorsCanon[(int)hexside]
, User + HexsideVectorsUserOdd[(int)hexside]));
}
}
/// <summary>TODO</summary>
public static short?DirectedCost <THex>(BoardStorage <Maybe <THex> > boardHexes, HexCoords hexCoords, Hexside hexside)
where THex : IHex
{
return(boardHexes[hexCoords].Bind(hex => hex.TryStepCost(hexside).ToMaybe()).ToNullable());
}
/// <summary>TODO</summary>
public NeighbourHex(IHex hex, Hexside hexsideExit) : this()
{
Hex = hex;
HexsideExit = hexsideExit;
}
/// <inheritdoc/>
public virtual int StepCost(HexCoords coords, Hexside hexsideExit)
{
return(IsOnboard(coords) ? this[coords].StepCost(hexsideExit) : -1);
}
/// <inheritdoc/>
public THex Neighbour(HexCoords coords, Hexside hexside)
{
return(_boardHexes.Neighbour(coords, hexside));
}
/// <inheritdoc/>
public int ElevationHexsideASL(HexCoords coords, Hexside hexside)
{
var hex = this[coords];
return(ElevationBase + hex.ElevationLevel * ElevationStep + hex.HeightHexside(hexside));
}
/// <inheritdoc/>
public virtual int DirectedStepCost(IHex hex, Hexside hexsideExit)
{
return(hex == null ? -1 : hex.DirectedStepCost(hexsideExit));
}
/// <inheritdoc/> public abstract int StepCost(Hexside hexsideExit);
/// <summary>TODO</summary>
public NeighbourCoords(HexCoords coords, Hexside hexside) : this()
{
Coords = coords; Hexside = hexside;
}
/// <summary>Default implementation, assuming no blocking hexside terrain.</summary> public virtual int HeightHexside(Hexside hexside) => HeightTerrain;
/// <inheritdoc/>
public IHex Neighbour(Hexside hexside)
{
return(Board[Coords.GetNeighbour(hexside)]);
}
/// <inheritdoc/>
public virtual int DirectedStepCost(Hexside hexsideExit)
{
return(Board[Coords.GetNeighbour(hexsideExit)].StepCost(hexsideExit));
}
/// <inheritdoc/> public abstract int StepCost(Hexside direction);
/// <summary>Default implementation, assuming no blocking hexside terrain.</summary>
public virtual int HeightHexside(Hexside hexside)
{
return(HeightTerrain);
}
/// <summary>Returns true exactly if <c>this</c> has the the eponymous bit from <c>hexside</c> set.</summary> /// <param name="this">The Hexsides value to test.</param> /// <param name="hexside">Specification of the eponymous bit in <c>this</c> to test.</param> public static bool IsSet(this Hexsides @this, Hexside hexside) => (@this.GetValue() & ((int)hexside.AsHexsides)) != 0;
/// <inheritdoc/> public abstract int EntryCost(Hexside hexsideExit);
/// <summary>Returns the reversed, or opposite, <c>Hexside</c> to the supplied value.</summary>
/// <param name="this"></param>
public static Hexside Reversed(this Hexside @this)
{
return((@this <= Hexside.Southeast) ? (@this + 3) : (@this - 3));
}
/// <summary>Returns an <c>HexCoords</c> for the hex in direction <c>hexside</c> from this one.</summary>
public HexCoords GetNeighbour(Hexside hexside)
{
return(NewCanonCoords(Canon + HexsideVectors[(int)hexside]));
}
/// <inheritdoc/> public abstract int ExitCost(Hexside hexsideExit);
/// <summary>The <c>HexsideFlag</c> corresponding to this <c>HexSide</c>.</summary>
public static HexsideFlags Direction(this Hexside @this)
{
return(HexsideFlags[(int)@this]);
}
/// <inheritdoc/> public abstract short?TryStepCost(Hexside hexsideExit);
