/// <summary>
/// Places a tile between the two points, creating the loop.
/// </summary>
private void AddLoopTile(Point one, Point two)
{
tileToAdd = new FloorTile();
behindDoorFlags difference = behindDoorInfo[one.X, one.Y] ^ behindDoorInfo[two.X, two.Y];
// Check if the difference is exactly one door color
if (Enum.IsDefined(typeof(behindDoorFlags), difference))
{
tileToAdd = new DoorTile();
(tileToAdd as DoorTile).SecondarySpriteColor = ChooseColor((int)Math.Log((int)difference, 2), false, false);
}
if ((!Enum.IsDefined(typeof(behindDoorFlags), difference) && difference != 0) || randomChance(loopHoleChance))
{
tileToAdd = new HoleTile();
if (randomChance(0.5))
{
tileToAdd = new GuardTile();
}
}
tiles.Add(tileToAdd, PointBetween(one, two).X, PointBetween(one, two).Y);
}
/// <summary>
/// Checks if the new exit point is better than the current exit.
/// </summary>
private void UpdateBestExit(Point newPoint)
{
// The best exit tile has to be next to the edge of the tilefield, the exit will be placed on the edge next to it.
if (!tiles.NearEdgeOfTileField(newPoint.X, newPoint.Y))
{
return;
}
// The best exit is the one hardest to reach from the start.
// Start with the distance from the start tile.
int score = exitScore[newPoint.X, newPoint.Y];
behindDoorFlags primaryFlags = behindDoorInfo[newPoint.X, newPoint.Y];
behindDoorFlags secondaryFlags = primaryFlags;
// For each door the exit is hidden behind, add the doors the key is hidden behind
foreach (behindDoorFlags flag in Enum.GetValues(typeof(behindDoorFlags)))
{
if ((flag & primaryFlags) != 0)
{
secondaryFlags |= keyBehindDoorInfo[(int)Math.Log((int)flag, 2)];
}
}
// Add some points for each required key.
foreach (behindDoorFlags flag in Enum.GetValues(typeof(behindDoorFlags)))
{
if ((flag & secondaryFlags) != 0)
{
score += doorScore;
}
}
// Update the best exit if it's better.
if (score > bestExitScore)
{
bestExit = newPoint;
bestExitScore = score;
}
}
