// Returns a list of cells for possible next highway leg
public List <Vector2> CreateHighwayLeg(Vector2 currentCoord, HighwayDirections currentDirection, List <Vector2> pendingHighway)
{
List <Vector2> highwayLeg = new List <Vector2>();
int numCells = 0;
//GlobalLogger.Log(string.Format("Leg start point: {0}", currentCoord.ToString()));
while (numCells < 20 &&
currentCoord.X > -1 &&
currentCoord.X < 120 &&
currentCoord.Y > -1 &&
currentCoord.Y < 160 &&
!Cells[(int)currentCoord.X, (int)currentCoord.Y].IsHighway &&
(numCells == 0 || !pendingHighway.Contains(currentCoord)))
{
highwayLeg.Add(currentCoord);
numCells++;
currentCoord = GetNextCell(currentCoord, currentDirection);
}
//GlobalLogger.Log(string.Format("Leg end point: {0}", currentCoord.ToString()));
return(highwayLeg);
}
public Vector2 GetNextCell(Vector2 start, HighwayDirections dir)
{
switch (dir)
{
case HighwayDirections.DOWN:
return(new Vector2(start.X + 1, start.Y));
case HighwayDirections.LEFT:
return(new Vector2(start.X, start.Y - 1));
case HighwayDirections.RIGHT:
return(new Vector2(start.X, start.Y + 1));
case HighwayDirections.UP:
return(new Vector2(start.X - 1, start.Y));
default:
return(default(Vector2));
}
}
// Returns true if entire highway is successfully created
public bool CreateHighway(Vector2 startCoord, HighwayDirections startDirection)
{
Random random = new Random(System.Guid.NewGuid().GetHashCode());
List <Vector2> totalHighway = new List <Vector2>();
List <Vector2> highwayPart = null;
while ((highwayPart = CreateHighwayLeg(startCoord, startDirection, totalHighway)).Count == 20 &&
!IsBoundaryCell(highwayPart.Last()))
{
// Add vector 2 to potential highway cell list
totalHighway.AddRange(highwayPart);
//GlobalLogger.Log(string.Format("Creating new highway leg: Current highway length: {0}", totalHighway.Count));
// Get new startCoord and startDirection
double newDirProbability = random.NextDouble();
//GlobalLogger.Log(string.Format("Random number chosen for new highway direction: {0}", newDirProbability));
startCoord = totalHighway.Last();
switch (startDirection)
{
case HighwayDirections.DOWN:
case HighwayDirections.UP:
if (newDirProbability < 0.19)
{
//GlobalLogger.Log("Turning Left");
startDirection = HighwayDirections.LEFT;
//startCoord = GetNextCell(startCoord, HighwayDirections.LEFT);
}
else if (newDirProbability < 0.39)
{
//GlobalLogger.Log("Turning Right");
startDirection = HighwayDirections.RIGHT;
//startCoord = GetNextCell(startCoord, HighwayDirections.RIGHT);
}
else
{
//GlobalLogger.Log("Maintaining Direction");
//startCoord = GetNextCell(startCoord, startDirection);
}
break;
case HighwayDirections.LEFT:
case HighwayDirections.RIGHT:
if (newDirProbability < 0.19)
{
//GlobalLogger.Log("Turning Up");
startDirection = HighwayDirections.UP;
//startCoord = GetNextCell(startCoord, HighwayDirections.UP);
}
else if (newDirProbability < 0.39)
{
//GlobalLogger.Log("Turning Down");
startDirection = HighwayDirections.DOWN;
//startCoord = GetNextCell(startCoord, HighwayDirections.DOWN);
}
else
{
//GlobalLogger.Log("Maintaining Direction");
//startCoord = GetNextCell(startCoord, startDirection);
}
break;
}
}
// Add cells that 'hit' another boundary
totalHighway.AddRange(highwayPart);
if (totalHighway.Count >= 100 && IsBoundaryCell(totalHighway.Last()))
{
//GlobalLogger.Log("Highway leg creation successful");
// Iterate through all Vector2 in totalHighway and mark as highway
foreach (Vector2 cell in totalHighway)
{
Cells[(int)cell.X, (int)cell.Y].IsHighway = true;
}
return(true);
}
else
{
//GlobalLogger.Log("Highway leg creation stopped");
return(false);
}
}