public ThingChangeEvent(Position pOld, Position pNew)
{
Old = pOld;
New = pNew;
}
public virtual IThing Neighbour(Position pos, Direction direction)
{
return Get(pos.Move(direction));
}
public virtual IThing Get(Position pos)
{
return _map.Get(pos);
}
private void Recognize(char letter, Position pos)
{
SetMap map = (target, cor, obj) => target[cor.X, cor.Y] = obj;
Destination destination;
Coffin coffin;
switch (letter)
{
case '#':
map(_staticMap, pos, new Wall());
break;
case 'o':
coffin = new Coffin();
Coffins.Add(coffin);
map(_dynamicMap, pos, coffin);
break;
case 'O':
coffin = new Coffin {OnDestination = true};
Coffins.Add(coffin);
map(_dynamicMap, pos, coffin);
destination = new Destination();
Destinations.Add(destination);
map(_staticMap, pos, destination);
break;
case 'x':
destination = new Destination();
Destinations.Add(destination);
map(_staticMap, pos, destination);
break;
case '@':
map(_dynamicMap, pos, new Forklift());
Player = pos;
break;
}
}
private bool CheckForPercolation()
{
var isOpen = new Func<Position, bool>(thing => !(_staticMap[thing.X, thing.Y] is Wall));
var getUnionId = new Func<Position, int>(thing =>
{
if (Width >= Height)
{
return thing.Y % Height + thing.X * Height;
}
else
{
return thing.X % Width + thing.Y * Width;
}
});
var uf = new UnionFind(Width * Height);
for (var i = 0; i < Width; i++)
{
for (var j = 0; j < Height; j++)
{
var pos = new Position(i, j);
if (!isOpen(pos)) continue;
Direction[] directions = {Direction.Down, Direction.Up, Direction.Left, Direction.Right};
foreach (var tmp in directions
.Select(pos.Move)
.Where(tmp => InBounds(tmp) && isOpen(tmp)))
{
uf.Union(getUnionId(pos), getUnionId(tmp));
}
}
}
var percolates = false;
var playerId = getUnionId(Player);
for (var i = 0; i < Width; i++)
{
var top = new Position(i, 0);
var bottom = new Position(i, Height - 1);
if (uf.IsConnected(playerId, getUnionId(top)))
percolates = true;
if (uf.IsConnected(playerId, getUnionId(bottom)))
percolates = true;
}
for (var j = 0; j < Height; j++)
{
var left = new Position(0, j);
var right = new Position(Width - 1, j);
if (uf.IsConnected(playerId, getUnionId(left)))
percolates = true;
if (uf.IsConnected(playerId, getUnionId(right)))
percolates = true;
}
return percolates;
}
public void Move(Position o, Position n, EventHandler<ThingChangeEvent> moved)
{
if (!InBounds(o)) return;
if (!InBounds(n)) return;
if (_dynamicMap[o.X, o.Y] == null) return;
_dynamicMap[n.X, n.Y] = _dynamicMap[o.X, o.Y];
_dynamicMap[o.X, o.Y] = null;
if (moved == null) return;
moved(this, new ThingChangeEvent(o, n));
}
public bool InBounds(Position pos)
{
return (pos.X >= 0 && pos.Y >= 0 && pos.Y < Height && pos.X < Width);
}
public virtual IThing Get(Position pos)
{
// check for out of bounds
if (!InBounds(pos)) return null;
return _dynamicMap[pos.X, pos.Y] ?? _staticMap[pos.X, pos.Y];
}