/// <summary>
/// Returns the shortest path from source to destination
/// using A* algorithm.
/// </summary>
/// <param name='src' type='GameObject'>
/// Source.
/// </param>
/// <param name='dst' type='GameObject'>
/// Destination
/// </param>
public List <GameObject> Astar(GameObject src, GameObject dst)
{
List <AiEdge> successors;
AiVertex auxVertex;
int cost = 0;
bool isInFrontier = false, isInExplored = false;
AiNode node = new AiNode(src, 1);
AiNode dstNode = new AiNode(dst, 1);
AiNode child;
GPWiki.BinaryHeap <AiNode> frontier = new GPWiki.BinaryHeap <AiNode>();
List <GameObject> explored = new List <GameObject>();
frontier.Add(node);
while (true)
{
if (frontier.Count == 0)
{
return(new List <GameObject>());
}
node = frontier.Remove();
explored.Add(node.m_GameObject);
if (node.Equals(dstNode))
{
return(explored);
}
auxVertex = node.m_GameObject.GetComponent <AiVertex>();
successors = auxVertex.m_Successors;
foreach (AiEdge e in successors)
{
cost = e.m_Cost;
cost += (int)Vector3.Distance(e.m_Vertex.gameObject.transform.position, dst.transform.position);
child = new AiNode(e.m_Vertex.gameObject, cost);
isInFrontier = frontier.Contains(child);
isInExplored = explored.Contains(child.m_GameObject);
if (!isInExplored && !isInFrontier)
{
frontier.Add(child);
}
else if (isInFrontier)
{
foreach (AiNode n in frontier)
{
if (n.Equals(child) && (n.m_Cost > child.m_Cost))
{
frontier.Remove(child);
frontier.Add(child);
}
}
}
}
}
}
public List <GuildRecord> ComputeMapFlooding()
{
GPWiki.BinaryHeap <GuildRecord> open;
open = new GPWiki.BinaryHeap <GuildRecord>();
List <GuildRecord> closed;
closed = new List <GuildRecord>();
foreach (Guild g in guildList)
{
GuildRecord gr = new GuildRecord();
Vector3 pos = g.baseObject.transform.position;
gr.location = GetNearestVertex(pos);
gr.guild = g;
gr.strength = g.GetDropOff(0f);
open.Add(gr);
}
while (open.Count != 0)
{
GuildRecord current;
current = open.Remove();
Vertex v = current.location;
Vector3 currPos;
currPos = v.transform.position;
Vertex[] neighbours;
neighbours = GetNeighbours(v);
foreach (Vertex n in neighbours)
{
Vector3 nPos = n.transform.position;
float dist = Vector3.Distance(currPos, nPos);
float strength = current.guild.GetDropOff(dist);
if (strength < dropOffThreshold)
{
continue;
}
GuildRecord neighGR = new GuildRecord();
neighGR.location = n;
neighGR.strength = strength;
VertexInfluence vi;
vi = n as VertexInfluence;
neighGR.guild = vi.guild;
if (closed.Contains(neighGR))
{
Vertex location = neighGR.location;
int index = closed.FindIndex(x => x.location == location);
GuildRecord gr = closed[index];
if (gr.guild.name != current.guild.name &&
gr.strength < strength)
{
continue;
}
}
else if (open.Contains(neighGR))
{
bool mustContinue = false;
foreach (GuildRecord gr in open)
{
if (gr.Equals(neighGR))
{
mustContinue = true;
break;
}
}
if (mustContinue)
{
continue;
}
}
else
{
neighGR = new GuildRecord();
neighGR.location = n;
}
neighGR.guild = current.guild;
neighGR.strength = strength;
open.Add(neighGR);
}
closed.Add(current);
}
return(closed);
}
