IEnumerator Generate()
{
generatedAreas = new List <AreaData>();
// Select a random area to start with.
int randomAreaIndex = Random.Range(0, areaDatas.Length);
AreaData randomArea = areaDatas[randomAreaIndex];
// Create a copy of the AreaData.
AreaData newArea = new AreaData(randomArea.name, randomArea.availableTransitions);
for (int i = 0; i < iterations; i++)
{
// Iterate through this area's transitions and add connections
// however, we'll also need to check for existing areas blocking the way or that should be connected
for (int j = 0; j < newArea.availableTransitions.Length; j++)
{
Direction transition = newArea.availableTransitions[j];
if (transition == Direction.None)
{
continue;
}
Direction opposite = transition.GetOpposite();
Coordinates adjacentAreaCoordinate = newArea.coordinates.GetAdjacentCoordinate(transition);
AreaData adjacentArea = GetGeneratedAreaByCoordinate(adjacentAreaCoordinate);
// if there's an area in the way check if it has an available transition opposite of this transition.
if (adjacentArea != null)
{
if (!adjacentArea.GetIsTransitionAvailable(opposite))
{
// The adjecent area cannot be transitioned to from this area.
adjacentArea = null;
// We should actually now flag this direction as no longer viable.
newArea.availableTransitions[j] = Direction.None;
}
}
// otherwise create a new area
else
{
adjacentArea = CreateRandomAreaWithTransition(opposite);
if (adjacentArea == null)
{
Debug.LogErrorFormat(
"Could not GetRandomAreaWithTransition({0}). " +
"Please ensure areaDatas has available transitions on all sides",
opposite);
}
else
{
adjacentArea.coordinates = adjacentAreaCoordinate;
generatedAreas.Add(adjacentArea);
}
}
if (adjacentArea != null)
{
// assign the connection between the two areas.
newArea.SetTransitionUsed(transition, adjacentArea, opposite);
adjacentArea.SetTransitionUsed(opposite, newArea, transition);
// check to see if we assigned any transitions to this new area, if so add it to the generatedAreas list.
if (newArea.GetTransitionCount() > 0)
{
if (!generatedAreas.Contains(newArea))
{
generatedAreas.Add(newArea);
}
}
// otherwise did something go wrong?
else
{
Debug.LogWarning("No transitions assigned to area: " + newArea.ToString());
}
yield return(CreateCubeRepresentation());
}
}
// Now we need to get the next area to work on.
newArea = null;
foreach (var item in generatedAreas)
{
if (item.HasAnyAvailableTransition())
{
newArea = item;
break;
}
}
if (newArea == null)
{
Debug.Log("Can't find any generated areas with avilable transitions. Quitting.");
break;
}
}
}