public void BuildWallTo(EMazeDirection dir)
{
RemoveConnection(dir);
neighbours[dir].RemoveConnection(MazeAlgorithm.InvertDirection(dir));
}
public void ConnectionTo(EMazeDirection dir)
{
AddConnection(dir);
neighbours[dir].AddConnection(MazeAlgorithm.InvertDirection(dir));
}
public void AddConnection(EMazeDirection dir)
{
connections.Add(dir);
}
public bool IsConnectedTo(EMazeDirection dir)
{
return(connections.Contains(dir));
}
public EMazeDirection GenRandomNeighbourDirection(ESelectCondition condition = ESelectCondition.None, List <EMazeDirection> direction_filter = null)
{
List <EMazeDirection> candidate = new List <EMazeDirection>();
foreach (var key in neighbours.Keys)
{
//Debug:注意要判断target是不是visited，而不是自己！
IMazeCell target = neighbours[key];
switch (condition)
{
case ESelectCondition.None:
candidate.Add(key);
break;
case ESelectCondition.NoConnected:
if (IsConnectedTo(key) == false)
{
candidate.Add(key);
}
break;
case ESelectCondition.NoVisited:
if (target.ConnectionCount == 0)
{
candidate.Add(key);
}
break;
case ESelectCondition.Connected:
if (IsConnectedTo(key) == true)
{
candidate.Add(key);
}
break;
case ESelectCondition.Visited:
if (target.ConnectionCount > 0)
{
candidate.Add(key);
}
break;
case ESelectCondition.VisitedConnected:
if (IsConnectedTo(key) == true && target.ConnectionCount > 0)
{
candidate.Add(key);
}
break;
}
}
//追加Filter 使得 随机筛选只能从指定方向中筛选。
if (direction_filter != null && candidate.Count > 0)
{
for (int i = candidate.Count - 1; i >= 0; i--)
{
if (direction_filter.Contains(candidate[i]) == false)
{
candidate.Remove(candidate[i]);
}
}
}
//albour-broder算法需要，因此，得，保存这个值
random_select_direction = candidate.Count == 0 ? EMazeDirection.DirectionCount : candidate[Random.Range(0, candidate.Count)];
return(random_select_direction);
}
