/// <summary>
/// Returns an array of positions that are able to be reached from a certain position given a move budget
/// </summary>
/// <param name="level">Level layout to query</param>
/// <param name="start">Starting position</param>
/// <param name="budget">How many movements it can make (-1 is infinite)</param>
/// <param name="straight">Whether the positions should be in direct view</param>
/// <returns>An unordered array of positions</returns>
public static IntVec[] getPossiblePositionsFrom(Level level, IntVec start, int budget = -1, CharacterTargeting targetCharacters = CharacterTargeting.TREAT_AS_SOLID, bool straight = false)
{
List <IntVec> positions = new List <IntVec>();
int[,] used = level.getIntSolid(targetCharacters != CharacterTargeting.PASS_THROUGH);
//used[start.X, start.Y] = int.MaxValue - 1;
possiblePositionsFromStep(level, positions, used, start, start, budget, targetCharacters, straight, true);
return(positions.ToArray <IntVec>());
}
public static SortedSet <__AStarNode> getPathDrawnBetween(Level level, IntVec from, IntVec to, int count)
{
int actions = 0;
int[,] solid = level.getIntSolid();
SortedSet <__AStarNode> nodes = new SortedSet <__AStarNode>(new __AStarNode.__AStarNodeComparer());
__AStarNode recentNode = new __AStarNode(from, 0, 10 * calculateHeuristic(from, to));
__AStarNode bestNode = recentNode;
nodes.Add(recentNode);
while (recentNode != null && !recentNode.position.Equals(to) && !recentNode.expanded && (actions < count))
{
recentNode = nodes.Min;
if (recentNode != null)
{
//recentNode.expanded = true;
Direction[] closest = closestDirections(to - recentNode.position);
if (recentNode.heuristic.CompareTo(bestNode.heuristic) <= 0)
{
//Console.Write("test");
bestNode = recentNode;
}
for (int i = 0; i < closest.Length; i++)//foreach (Direction dir in Direction.Values)
{
Direction dir = closest[i];
IntVec newLocation = recentNode.position + dir;
if (solid[newLocation.X, newLocation.Y] < -(recentNode.actualCost + 10) && (actions++ < count))
{
solid[newLocation.X, newLocation.Y] = -(recentNode.actualCost + 10);
nodes.Add(new __AStarNode(newLocation, recentNode.actualCost + 10, 10 * calculateHeuristic(newLocation, to), i, recentNode, dir));
}
}
if (actions++ < count)
{
nodes.Remove(recentNode);
}
}
}
return(nodes);
}
/// <summary>
/// Returns an ordered array of directions needed for moves between two positions
/// </summary>
/// <param name="level">Level layout to query</param>
/// <param name="from">Starting position</param>
/// <param name="to">Final position</param>
/// <returns>The moves needed to make the journey, null if not possible</returns>
public static Direction[] getPathBetweenOld(Level level, IntVec from, IntVec to)
{
bestPath = null;
return(pathBetweenStep(level.getIntSolid(), from, to, 1, new List <Direction>()));
}
public static Direction[] getPathBetween(Level level, IntVec from, IntVec to, ref bool isPossible)
{
int[,] solid = level.getIntSolid();
SortedSet <__AStarNode> nodes = new SortedSet <__AStarNode>(new __AStarNode.__AStarNodeComparer());
__AStarNode recentNode = new __AStarNode(from, 0, 10 * calculateHeuristic(from, to));
__AStarNode bestNode = recentNode;
nodes.Add(recentNode);
while (recentNode != null && !recentNode.position.Equals(to) && !recentNode.expanded)
{
recentNode = nodes.Min;
if (recentNode != null)
{
//recentNode.expanded = true;
Direction[] closest = closestDirections(to - recentNode.position);
if (recentNode.heuristic.CompareTo(bestNode.heuristic) <= 0)
{
//Console.Write("test");
bestNode = recentNode;
}
for (int i = 0; i < closest.Length; i++) //foreach (Direction dir in Direction.Values)
{
Direction dir = closest[i];
IntVec newLocation = recentNode.position + dir;
if (solid[newLocation.X, newLocation.Y] < -(recentNode.actualCost + 10) || (solid[newLocation.X, newLocation.Y] == int.MaxValue && newLocation.Equals(to)))
{
solid[newLocation.X, newLocation.Y] = -(recentNode.actualCost + 10);
nodes.Add(new __AStarNode(newLocation, recentNode.actualCost + 10, 10 * calculateHeuristic(newLocation, to), i, recentNode, dir));
}
}
nodes.Remove(recentNode);
}
}
if (bestNode != null)
{
isPossible = bestNode.position.Equals(to);
}
List <Direction> path = new List <Direction>();
recentNode = recentNode ?? bestNode;
while (recentNode != null && !recentNode.position.Equals(from))
{
path.Add(recentNode.directionTaken);
recentNode = recentNode.reachedFrom;
}
path.Reverse();
return(path.ToArray());
}
