/// <summary>
/// Can the given args can traverse this region?
/// </summary>
/// <param name="reachableArgs"></param>
/// <returns></returns>
public bool RegionTraversable(ReachableArgs reachableArgs)
{
// The assumption is that all nodes in a region have the same pathfinding traits
// As such we can just use the origin node for checking.
return(PathfindingHelpers.Traversable(reachableArgs.CollisionMask, reachableArgs.Access,
OriginNode));
}
/// <summary>
/// Check to see if the node is a jump point (only works for cardinal directions)
/// </summary>
private bool IsCardinalJumpPoint(Direction direction, PathfindingNode currentNode)
{
PathfindingNode openNeighborOne;
PathfindingNode closedNeighborOne;
PathfindingNode openNeighborTwo;
PathfindingNode closedNeighborTwo;
switch (direction)
{
case Direction.North:
openNeighborOne = currentNode.GetNeighbor(Direction.NorthEast);
closedNeighborOne = currentNode.GetNeighbor(Direction.East);
openNeighborTwo = currentNode.GetNeighbor(Direction.NorthWest);
closedNeighborTwo = currentNode.GetNeighbor(Direction.West);
break;
case Direction.East:
openNeighborOne = currentNode.GetNeighbor(Direction.NorthEast);
closedNeighborOne = currentNode.GetNeighbor(Direction.North);
openNeighborTwo = currentNode.GetNeighbor(Direction.SouthEast);
closedNeighborTwo = currentNode.GetNeighbor(Direction.South);
break;
case Direction.South:
openNeighborOne = currentNode.GetNeighbor(Direction.SouthEast);
closedNeighborOne = currentNode.GetNeighbor(Direction.East);
openNeighborTwo = currentNode.GetNeighbor(Direction.SouthWest);
closedNeighborTwo = currentNode.GetNeighbor(Direction.West);
break;
case Direction.West:
openNeighborOne = currentNode.GetNeighbor(Direction.NorthWest);
closedNeighborOne = currentNode.GetNeighbor(Direction.North);
openNeighborTwo = currentNode.GetNeighbor(Direction.SouthWest);
closedNeighborTwo = currentNode.GetNeighbor(Direction.South);
break;
default:
throw new ArgumentOutOfRangeException();
}
if ((closedNeighborOne == null || !PathfindingHelpers.Traversable(_pathfindingArgs.CollisionMask, _pathfindingArgs.Access, closedNeighborOne)) &&
(openNeighborOne != null && PathfindingHelpers.Traversable(_pathfindingArgs.CollisionMask, _pathfindingArgs.Access, openNeighborOne)))
{
return(true);
}
if ((closedNeighborTwo == null || !PathfindingHelpers.Traversable(_pathfindingArgs.CollisionMask, _pathfindingArgs.Access, closedNeighborTwo)) &&
(openNeighborTwo != null && PathfindingHelpers.Traversable(_pathfindingArgs.CollisionMask, _pathfindingArgs.Access, openNeighborTwo)))
{
return(true);
}
return(false);
}
/// <summary>
/// Check to see if the node is a jump point (only works for cardinal directions)
/// </summary>
private bool IsCardinalJumpPoint(Direction direction, PathfindingNode currentNode)
{
PathfindingNode?openNeighborOne = null;
PathfindingNode?closedNeighborOne = null;
PathfindingNode?openNeighborTwo = null;
PathfindingNode?closedNeighborTwo = null;
switch (direction)
{
case Direction.North:
foreach (var neighbor in currentNode.GetNeighbors())
{
var neighborDirection = PathfindingHelpers.RelativeDirection(neighbor, currentNode);
switch (neighborDirection)
{
case Direction.NorthEast:
openNeighborOne = neighbor;
break;
case Direction.East:
closedNeighborOne = neighbor;
break;
case Direction.NorthWest:
openNeighborTwo = neighbor;
break;
case Direction.West:
closedNeighborTwo = neighbor;
break;
}
}
break;
case Direction.East:
foreach (var neighbor in currentNode.GetNeighbors())
{
var neighborDirection = PathfindingHelpers.RelativeDirection(neighbor, currentNode);
switch (neighborDirection)
{
case Direction.NorthEast:
openNeighborOne = neighbor;
break;
case Direction.North:
closedNeighborOne = neighbor;
break;
case Direction.SouthEast:
openNeighborTwo = neighbor;
break;
case Direction.South:
closedNeighborTwo = neighbor;
break;
}
}
break;
case Direction.South:
foreach (var neighbor in currentNode.GetNeighbors())
{
var neighborDirection = PathfindingHelpers.RelativeDirection(neighbor, currentNode);
switch (neighborDirection)
{
case Direction.SouthEast:
openNeighborOne = neighbor;
break;
case Direction.East:
closedNeighborOne = neighbor;
break;
case Direction.SouthWest:
openNeighborTwo = neighbor;
break;
case Direction.West:
closedNeighborTwo = neighbor;
break;
}
}
break;
case Direction.West:
foreach (var neighbor in currentNode.GetNeighbors())
{
var neighborDirection = PathfindingHelpers.RelativeDirection(neighbor, currentNode);
switch (neighborDirection)
{
case Direction.NorthWest:
openNeighborOne = neighbor;
break;
case Direction.North:
closedNeighborOne = neighbor;
break;
case Direction.SouthWest:
openNeighborTwo = neighbor;
break;
case Direction.South:
closedNeighborTwo = neighbor;
break;
}
}
break;
default:
throw new ArgumentOutOfRangeException();
}
if ((closedNeighborOne == null || !PathfindingHelpers.Traversable(_pathfindingArgs.CollisionMask, _pathfindingArgs.Access, closedNeighborOne)) &&
openNeighborOne != null && PathfindingHelpers.Traversable(_pathfindingArgs.CollisionMask, _pathfindingArgs.Access, openNeighborOne))
{
return(true);
}
if ((closedNeighborTwo == null || !PathfindingHelpers.Traversable(_pathfindingArgs.CollisionMask, _pathfindingArgs.Access, closedNeighborTwo)) &&
openNeighborTwo != null && PathfindingHelpers.Traversable(_pathfindingArgs.CollisionMask, _pathfindingArgs.Access, openNeighborTwo))
{
return(true);
}
return(false);
}