public Whereabouts( int floor, Point location, Direction direction )
{
Floor = floor;
Location = location;
Direction = direction;
Fraction = 0;
}
private int getDistance(int floor, Point fromLoc, Direction direction)
{
var toLoc = fromLoc.Add(direction.DirectionAsPoint());
return PlayingField.CanMoveHere(ref floor, fromLoc, toLoc, true)
? Distance[floor, toLoc.Y, toLoc.X]
: int.MaxValue;
}
public void SetPosition(Vector3 position, Direction direction)
{
CaveWorld = Matrix.Scaling(0.9f, 0.7f, 0.5f)
*Matrix.Translation(5, 0.3f, -0.5f)
*Matrix.RotationY(MathUtil.PiOverTwo)
*Matrix.Translation(position);
_gratingPart3 = Matrix.Translation(0.41f, 0.2f, -4.7f) * Matrix.Translation(position);
}
private void testDistance(int floor, Point fromLoc, ref Direction bestDirection, ref int bestDistance, Direction direction)
{
var here = getDistance(floor, fromLoc, direction);
if (here >= bestDistance)
return;
bestDirection = direction;
bestDistance = here;
}
static Direction()
{
None = new Direction(DirectionValue.None);
South = new Direction(DirectionValue.South);
West = new Direction(DirectionValue.West);
North = new Direction(DirectionValue.North);
East = new Direction(DirectionValue.East);
AllDirections = new[] {South, West, North, East};
}
public void Explore(int floor, Point fromLoc, int distance, Direction direction)
{
var toLoc = fromLoc.Add(direction.DirectionAsPoint());
if (!PlayingField.CanMoveHere(ref floor, fromLoc, toLoc, true))
return;
var here = Distance[floor, toLoc.Y, toLoc.X];
if (here != 0 && here < distance)
return; // already know shorter path
Distance[floor, toLoc.Y, toLoc.X] = distance;
foreach (var newDirection in Direction.AllDirections)
Explore(floor, toLoc, distance + 1, newDirection);
}
public static void Draw(
IVEffect effect,
Texture2D skin,
Vector4 diffuseColor,
IVDrawable sphere,
Matrix translation,
Direction direction)
{
var t = direction.IsNorthSouth ? NorthSouthScale : EastWestScale;
var off = direction.DirectionAsVector3()*-0.3f;
t *= Matrix.Translation(off);
effect.World = t*translation;
effect.Texture = skin;
effect.DiffuseColor = diffuseColor;
sphere.Draw(effect);
}
public static Point Add(this Point p1, Direction dir)
{
return p1.Add(dir.DirectionAsPoint());
}
protected bool TryMove(Direction dir, bool ignoreRestriction = false)
{
if (dir == Direction.None)
{
_whereabouts.Direction = Direction.None;
return true;
}
var possibleLocationTo = _whereabouts.Location.Add(dir);
if (!PlayingField.CanMoveHere(ref _whereabouts.Floor, _whereabouts.Location, possibleLocationTo, ignoreRestriction))
return false;
_whereabouts.Direction = dir;
_tail.AddPathToWalk(_whereabouts);
return true;
}
public RelativeDirection GetRelativeDirection(Direction goingTo)
{
if(goingTo==None)
return RelativeDirection.None;
if (this == goingTo)
return RelativeDirection.Forward;
if (Turn(RelativeDirection.Left) == goingTo)
return RelativeDirection.Left;
if (Turn(RelativeDirection.Right) == goingTo)
return RelativeDirection.Right;
return RelativeDirection.Backward;
}