/// <summary>
/// Gets a collection of pathfinder nodes to this creature. Returns an empty IEnumerable if unreachable.
/// </summary>
/// <param name="tileCollection">The list of tiles on screen to use for pathfinding.</param>
/// <param name="pathFinder">The PathFinder object to use.</param>
/// <returns></returns>
public IEnumerable <Objects.PathFinder.Node> GetTilesToCreature(Map.TileCollection tileCollection,
Objects.PathFinder pathFinder)
{
if (pathFinder == null)
{
return(Enumerable.Empty <Objects.PathFinder.Node>());
}
if (this.Location.IsAdjacentTo(this.Client.Player.Location))
{
return(new List <Objects.PathFinder.Node>()
{
new Objects.PathFinder.Node()
{
X = 8, Y = 6
}
});
}
if (!this.Location.IsOnScreen(this.Client.Player.Location))
{
return(Enumerable.Empty <Objects.PathFinder.Node>());
}
uint playerZ = this.Client.Player.Z;
if (tileCollection.IsEmpty())
{
return(Enumerable.Empty <Objects.PathFinder.Node>());
}
Map.Tile playerTile = tileCollection.GetTile(count: this.Client.Player.ID);
Map.Tile creatureTile = tileCollection.GetTile(count: this.ID);
if (playerTile == null || creatureTile == null)
{
return(Enumerable.Empty <Objects.PathFinder.Node>());
}
lock (pathFinder)
{
pathFinder.ResetGrid();
foreach (Map.Tile tile in tileCollection.GetTiles())
{
if (tile == null)
{
continue;
}
if (!tile.IsWalkable())
{
pathFinder.Grid[tile.MemoryLocation.X, tile.MemoryLocation.Y] = (byte)Enums.MiniMapSpeedValues.Unwalkable;
}
else
{
pathFinder.Grid[tile.MemoryLocation.X, tile.MemoryLocation.Y] = 1;
}
}
pathFinder.Grid[playerTile.MemoryLocation.X, playerTile.MemoryLocation.Y] = 1;
pathFinder.Grid[creatureTile.MemoryLocation.X, creatureTile.MemoryLocation.Y] = 1;
return(pathFinder.FindPath(playerTile.MemoryLocation, creatureTile.MemoryLocation, true));
}
}
/// <summary>
/// Gets a collection of pathfinder nodes to a given location. Returns 0 elements if unsuccessful.
/// </summary>
/// <param name="c">The client to perform the operation on.</param>
/// <param name="loc">The location to reach.</param>
/// <param name="tiles">A list of tiles to use for pathfinding.</param>
/// <param name="pathFinder">The pathfinder to use.</param>
/// <param name="considerPlayerWalkable">Whether to consider the player as walkable.</param>
/// <param name="considerCreatureOnLocationWalkable">Whether to consider any creatures on the target location as walkable.</param>
/// <returns></returns>
public IEnumerable <Objects.PathFinder.Node> GetTilesToLocation(Objects.Client c,
Location loc, Map.TileCollection tiles, Objects.PathFinder pathFinder,
bool considerPlayerWalkable = false, bool considerCreatureOnLocationWalkable = false)
{
if (pathFinder == null)
{
return(Enumerable.Empty <Objects.PathFinder.Node>());
}
//return pathFinder.
if (!this.IsOnScreen(c.Player.Location))
{
return(Enumerable.Empty <Objects.PathFinder.Node>());
}
uint playerId = c.Player.ID;
Map.Tile playerTile = tiles.GetTile(count: playerId);
Map.Tile fromTile = tiles.GetTile(this);
Map.Tile targetTile = tiles.GetTile(loc);
if (playerTile == null || fromTile == null || targetTile == null)
{
return(Enumerable.Empty <Objects.PathFinder.Node>());
}
// check if target tile is walkable
if (!targetTile.IsWalkable() && (!considerPlayerWalkable || targetTile != playerTile))
{
return(Enumerable.Empty <Objects.PathFinder.Node>());
}
if (fromTile == targetTile)
{
return(Enumerable.AsEnumerable(new Objects.PathFinder.Node[] { new Objects.PathFinder.Node() }));
}
lock (pathFinder)
{
pathFinder.ResetGrid();
foreach (Map.Tile tile in tiles.GetTiles())
{
if (tile == null)
{
continue;
}
if ((considerPlayerWalkable && tile == playerTile) || tile.IsWalkable())
{
pathFinder.Grid[tile.MemoryLocation.X, tile.MemoryLocation.Y] = 1;
}
else
{
pathFinder.Grid[tile.MemoryLocation.X, tile.MemoryLocation.Y] = (byte)Enums.MiniMapSpeedValues.Unwalkable;
}
}
pathFinder.Grid[fromTile.MemoryLocation.X, fromTile.MemoryLocation.Y] = 1;
return(pathFinder.FindPath(fromTile.MemoryLocation, targetTile.MemoryLocation));
}
}
/// <summary>
/// Checks whether this location can reach another location.
/// </summary>
/// <param name="c">The client to perform the operation on.</param>
/// <param name="loc">The location to reach.</param>
/// <param name="tiles">A list of tiles to use for pathfinding.</param>
/// <param name="pathFinder">The pathfinder to use.</param>
/// <returns></returns>
public bool CanReachLocation(Objects.Client c, Location loc,
Map.TileCollection tiles, Objects.PathFinder pathFinder)
{
return(this.GetTilesToLocation(c, loc, tiles, pathFinder, false).ToArray <Objects.PathFinder.Node>().Length > 0);
}
/// <summary>
/// Checks whether this creature is reachable.
/// </summary>
/// <param name="tileCollection">The tiles on screen to use for pathfinding.</param>
/// <param name="pathFinder">The pathfinder to use.</param>
/// <returns></returns>
public bool IsReachable(Map.TileCollection tileCollection, Objects.PathFinder pathFinder)
{
return(this.GetTilesToCreature(tileCollection, pathFinder).ToList <Objects.PathFinder.Node>().Count > 0);
}
