public bool HasConnected(BigPoint begin, BigPoint end)
{
List <BigPoint> seen = new List <BigPoint>();
Queue <BigPoint> q = new Queue <BigPoint>();
q.Enqueue(begin);
while (q.Count != 0)
{
BigPoint cur = q.Dequeue();
seen.Add(cur);
if (cur.Equals(end))
{
return(true);
}
if (cur.Team != begin.Team && cur.Team != DEFINE.TEAM.NONE)
{
continue;
}
List <BigPoint> neigh = GetNeighbourhood(cur);
foreach (var n in neigh)
{
if (!seen.Contains(n))// && (cur.Team == n.Team || n.Team == DEFINE.TEAM.NEUTRAL)
{
q.Enqueue(n);
}
}
}
return(false);
}
public List <BigPoint> GetNeighbourhood(BigPoint point)
{
List <BigPoint> neigh = new List <BigPoint>();
foreach (var item in e)
{
if (point.Equals(item.Begin))
{
neigh.Add(GetPointByPos(item.End.Position));
}
}
return(neigh);
}
public int GetDistance(BigPoint begin, BigPoint end)
{
if (begin.Equals(end))
{
return(0);
}
int distance = int.MaxValue;
WayPoint way = GetAWay(begin, end);
if (way != null)
{
distance = way.GetLen();
}
return(distance);
}
public List <WayPoint> Dijkstra(BigPoint s, BigPoint e)
{
Hashtable d = new Hashtable(); // d[v] = khoang cach tu v den s
List <WayPoint> ways = new List <WayPoint>(); // cac quang duong ngan nhat
List <BigPoint> notUsed = new List <BigPoint>(); // danh sach dinh chua su dung(chua ngan nhat)
Hashtable previous = new Hashtable(); // preious[x] = dinh truoc x
// khoi tao
foreach (var i in v)
{
d.Add(i, GetDistance(s, i)); // khoi tao khoang cach min tu s den cac dinh
if (i.Team == s.Team || i.Team == DEFINE.TEAM.NONE || i.Equals(e))
{
notUsed.Add(i);
previous.Add(i, s);
}
}
notUsed.Remove(s);
// tim duong di
while (notUsed.Contains(e))// khi chua toi dich
{
// tim dinh co khoang cach ngan nhat hien tai
BigPoint u = notUsed[0];
foreach (var z in notUsed)
{
if (z.Team != s.Team && z.Team != DEFINE.TEAM.NONE && !z.Equals(e))
{
continue;
}
if (int.Parse(d[z].ToString()) < int.Parse(d[u].ToString()))
{
u = z;
}
}
notUsed.Remove(u);
List <BigPoint> neigh = GetNeighbourhood(u);
foreach (var n in neigh)
{
if (int.Parse(d[n].ToString()) > (int.Parse(d[u].ToString()) + GetDistance(u, n)))
{
d[n] = int.Parse(d[u].ToString()) + GetDistance(u, n);
// previous.Add(n, u);
previous[n] = u;
}
}
}
// tinh toan duong di
BigPoint b = e;
BigPoint a = previous[e] as BigPoint;
ways.Add(GetAWay(a, b));
while (!a.Equals(s))
{
a = previous[a] as BigPoint;
b = previous[b] as BigPoint;
ways.Add(GetAWay(a, b));
}
ways.Reverse();
return(ways);
}
