public void DefaultCorridorGenerator(DungeonBSPNode dungeonNode)
{
DungeonBSPNode leftChild = dungeonNode.LeftChild;
DungeonBSPNode rightChild = dungeonNode.RightChild;
DiggerGnome digger = new DiggerGnome(TargetMap);
if (leftChild == null || !leftChild.RoomBuilt)
dungeonNode.BoundingRect = rightChild.BoundingRect;
else if (rightChild == null || !rightChild.RoomBuilt)
dungeonNode.BoundingRect = leftChild.BoundingRect;
else
{
// Draw a corridor between our child nodes. We have been keeping track of their bounding rectangles
// as we've worked our way up the tree, so we can use that ensure we connect corridors to rooms
if (dungeonNode.SplitOrientation == DungeonBSPNode.Orientation.Horizontal)
{
// child nodes were split horizontally, so draw a horizontal corridor between them.
// If the nodes' regions overlap vertically by at least 3 (leaving room for walls), then we can just dig a
// single horizontal tunnel to connect them; otherwise, we need to dig an 'L' shapped corridor to connect them.
int minOverlappingY = Math.Max(leftChild.BoundingRect.Top, rightChild.BoundingRect.Top);
int maxOverlappingY = Math.Min(leftChild.BoundingRect.Bottom, rightChild.BoundingRect.Bottom);
if (maxOverlappingY - minOverlappingY >= 3)
{
// The regions overlap; we can dig a single horizontal corridor to connect them
// Determine the range of Y axis values that we can dig at in order to connect the regions
int corridorY = minOverlappingY + 1 + Rand.Next(maxOverlappingY - minOverlappingY - 2);
// Start at the border between the two regions at Y=corridorY and dig towards the outside
// edge of each region; we are gauranteed to eventually hit something since the regions' bounding
// rects overlapped.
digger.Dig(leftChild.BoundingRect.Right, corridorY, Direction.Left, 0, true);
digger.Dig(leftChild.BoundingRect.Right + 1, corridorY, Direction.Right, 0, true);
}
else
{
// They don't overlap enough; dig an 'L' shaped corridor to connect them.
int tunnelMeetX, tunnelMeetY;
// Note that some of the math below (in particular the Mins and Maxs) are because the regions *can* be slightly overlapping in
// the appropriate dimension; we don't draw a straight line if they overlap by less than 3 (to minimize the number of odd corridors
// that attach to the outside corner of a room)
if (leftChild.BoundingRect.Top > rightChild.BoundingRect.Top)
{
// Left child region's bounding rect is below the Right child region's bound rect.
// _____
// X____| |
// | | R |
// | |___|
// __|__
// | |
// | L |
// |___|
tunnelMeetX = RandomValueBetween(leftChild.BoundingRect.Left + 1, leftChild.BoundingRect.Right);
tunnelMeetY = RandomValueBetween(rightChild.BoundingRect.Top + 1, Math.Min(rightChild.BoundingRect.Bottom - 1, leftChild.BoundingRect.Top));
digger.DigDownRightCorridor(tunnelMeetX, tunnelMeetY, tunnelMeetX, tunnelMeetY);
}
else
{
// Left child region's bounding rect is above the Right child region's bound rect.
// _____
// | |____X
// | L | |
// |___| |
// __|__
// | |
// | R |
// |___|
tunnelMeetX = RandomValueBetween(rightChild.BoundingRect.Left + 1, rightChild.BoundingRect.Right);
tunnelMeetY = RandomValueBetween(leftChild.BoundingRect.Top + 1, Math.Min(leftChild.BoundingRect.Bottom - 1, rightChild.BoundingRect.Top));
digger.DigDownLeftLCorridor(tunnelMeetX, tunnelMeetY, tunnelMeetX, tunnelMeetY);
}
}
// TBD: Need to set bounding rect for Special Rooms
}
else // Vertical split
{
// child nodes were split vertically, so draw a vertical corridor between them.
// If the nodes' regions overlap horizontally by at least 3 (leaving room for walls), then we can just dig a
// single vertical tunnel to connect them; otherwise, we need to dig an 'L' shapped corridor to connect them.
int minOverlappingX = Math.Max(leftChild.BoundingRect.Left, rightChild.BoundingRect.Left);
int maxOverlappingX = Math.Min(leftChild.BoundingRect.Right, rightChild.BoundingRect.Right);
if (maxOverlappingX - minOverlappingX >= 3)
{
// The regions overlap; we can dig a single vertical corridor to connect them
// Determine the range of X axis values that we can dig at in order to connect the regions
int corridorX = minOverlappingX + 1 + Rand.Next(maxOverlappingX - minOverlappingX - 2);
// Start at the border between the two regions at X=corridorX and dig towards the outside
// edge of each region; we are gauranteed to eventually hit something since the regions' bounding
// rects overlapped.
digger.Dig(corridorX, leftChild.BoundingRect.Bottom, Direction.Up, 0, true);
digger.Dig(corridorX, leftChild.BoundingRect.Bottom + 1, Direction.Down, 0, true);
}
else
{
// They don't overlap enough; dig an 'L' shaped corridor to connect them.
int tunnelMeetX, tunnelMeetY;
if (leftChild.BoundingRect.Left > rightChild.BoundingRect.Left)
{
// _____
// | |
// | L |
// |___|
// _____ |
// | | |
// | R |___|X
// |___|
tunnelMeetX = RandomValueBetween(Math.Max(leftChild.BoundingRect.Left + 1, rightChild.BoundingRect.Right + 1), leftChild.BoundingRect.Right);
tunnelMeetY = RandomValueBetween(rightChild.BoundingRect.Top + 1, rightChild.BoundingRect.Bottom);
digger.DigUpLeftCorridor(tunnelMeetX, tunnelMeetY, tunnelMeetX, tunnelMeetY);
}
else
{
// _____
// | |
// | L |
// |___|
// | _____
// | | |
// X|____| R |
// |___|
tunnelMeetX = RandomValueBetween(leftChild.BoundingRect.Left, Math.Min(rightChild.BoundingRect.Left, leftChild.BoundingRect.Right - 1));
tunnelMeetY = RandomValueBetween(rightChild.BoundingRect.Top + 1, rightChild.BoundingRect.Bottom);
digger.DigUpRightLCorridor(tunnelMeetX, tunnelMeetY, tunnelMeetX, tunnelMeetY);
}
}
}
// Determine our bounding rectangle (as the union of our child nodes' rectangles).
dungeonNode.BoundingRect = Rectangle.Union(leftChild.BoundingRect, rightChild.BoundingRect);
}
// TBD: Not quite right - "RoomOrCorridorBuilt" more accurate
dungeonNode.RoomBuilt = true;
}
private void BruteForceConnectRooms(DungeonBSPNode regionA, DungeonBSPNode regionB)
{
// We don't care if we go through existing rooms; the goal is that we actually get atypical rooms...
DiggerGnome digger = new DiggerGnome(TargetMap);
if (regionA.BoundingRect.Bottom < regionB.BoundingRect.Top || regionB.BoundingRect.Bottom < regionA.BoundingRect.Top)
{
// Vertical split. Determine which one is the upper & lower region
DungeonBSPNode upperRegion = (regionA.BoundingRect.Bottom <= regionB.BoundingRect.Top) ? regionA : regionB;
DungeonBSPNode lowerRegion = (upperRegion == regionA) ? regionB : regionA;
// If the nodes' regions overlap horizontally by at least 3 (leaving room for walls), then we can just dig a
// single vertical tunnel to connect them; otherwise, we need to dig an 'L' shapped corridor to connect them.
int minOverlappingX = Math.Max(upperRegion.BoundingRect.Left, lowerRegion.BoundingRect.Left);
int maxOverlappingX = Math.Min(upperRegion.BoundingRect.Right, lowerRegion.BoundingRect.Right);
if (maxOverlappingX - minOverlappingX >= 3)
{
// The regions overlap; we can dig a single vertical corridor to connect them
// Determine the range of X axis values that we can dig at in order to connect the regions
int corridorX = minOverlappingX + 1 + Rand.Next(maxOverlappingX - minOverlappingX - 2);
// Start at the border between the two regions at X=corridorX and dig towards the outside
// edge of each region; we are gauranteed to eventually hit something since the regions' bounding
// rects overlapped.
digger.Dig(corridorX, upperRegion.BoundingRect.Bottom, Direction.Up, 0, true);
digger.Dig(corridorX, upperRegion.BoundingRect.Bottom + 1, Direction.Down, lowerRegion.BoundingRect.Top - (upperRegion.BoundingRect.Bottom + 1), true);
}
else
{
// They don't overlap enough; dig an 'L' shaped corridor to connect them.
int tunnelMeetX, tunnelMeetY;
if (upperRegion.BoundingRect.Left > lowerRegion.BoundingRect.Left)
{
// _____
// | |
// | L |
// |___|
// _____ |
// | | |
// | R |___|X
// |___|
tunnelMeetX = RandomValueBetween(Math.Max(upperRegion.BoundingRect.Left + 1, lowerRegion.BoundingRect.Right + 1), upperRegion.BoundingRect.Right);
tunnelMeetY = RandomValueBetween(lowerRegion.BoundingRect.Top + 1, lowerRegion.BoundingRect.Bottom);
digger.DigUpLeftCorridor(tunnelMeetX, tunnelMeetY, lowerRegion.BoundingRect.Right, upperRegion.BoundingRect.Bottom);
}
else
{
// _____
// | |
// | L |
// |___|
// | _____
// | | |
// X|____| R |
// |___|
tunnelMeetX = RandomValueBetween(upperRegion.BoundingRect.Left + 1, Math.Min(lowerRegion.BoundingRect.Left, upperRegion.BoundingRect.Right - 1));
tunnelMeetY = RandomValueBetween(lowerRegion.BoundingRect.Top + 1, lowerRegion.BoundingRect.Bottom);
digger.DigUpRightLCorridor(tunnelMeetX, tunnelMeetY, lowerRegion.BoundingRect.Left, upperRegion.BoundingRect.Bottom);
}
}
}
else
{
// Horizontal split. Determine which one is the left & right region
DungeonBSPNode leftRegion = (regionA.BoundingRect.Right <= regionB.BoundingRect.Left) ? regionA : regionB;
DungeonBSPNode rightRegion = (leftRegion == regionA) ? regionB : regionA;
// If the nodes' regions overlap vertically by at least 3 (leaving room for walls), then we can just dig a
// single horizontal tunnel to connect them; otherwise, we need to dig an 'L' shapped corridor to connect them.
int minOverlappingY = Math.Max(leftRegion.BoundingRect.Top, rightRegion.BoundingRect.Top);
int maxOverlappingY = Math.Min(leftRegion.BoundingRect.Bottom, rightRegion.BoundingRect.Bottom);
if (maxOverlappingY - minOverlappingY >= 3)
{
// The regions overlap; we can dig a single horizontal corridor to connect them
// Determine the range of Y axis values that we can dig at in order to connect the regions
int corridorY = minOverlappingY + 1 + Rand.Next(maxOverlappingY - minOverlappingY - 2);
digger.Dig(leftRegion.BoundingRect.Right, corridorY, Direction.Left, 0, true);
digger.Dig(leftRegion.BoundingRect.Right + 1, corridorY, Direction.Right, rightRegion.BoundingRect.Left - (leftRegion.BoundingRect.Right + 1), true);
}
else
{
// They don't overlap enough; dig an 'L' shaped corridor to connect them.
int tunnelMeetX, tunnelMeetY;
if (leftRegion.BoundingRect.Top > rightRegion.BoundingRect.Top)
{
// Left region's bounding rect is below the Right region's bound rect.
// _____
// X____| |
// | | R |
// | |___|
// __|__
// | |
// | L |
// |___|
tunnelMeetX = RandomValueBetween(leftRegion.BoundingRect.Left + 1, leftRegion.BoundingRect.Right);
tunnelMeetY = RandomValueBetween(rightRegion.BoundingRect.Top + 1, Math.Min(rightRegion.BoundingRect.Bottom - 1, leftRegion.BoundingRect.Top));
digger.DigDownRightCorridor(tunnelMeetX, tunnelMeetY, rightRegion.BoundingRect.Left, leftRegion.BoundingRect.Top);
}
else
{
// Left child region's bounding rect is above the Right child region's bound rect.
// _____
// | |____X
// | L | |
// |___| |
// __|__
// | |
// | R |
// |___|
tunnelMeetX = RandomValueBetween(rightRegion.BoundingRect.Left + 1, rightRegion.BoundingRect.Right);
tunnelMeetY = RandomValueBetween(leftRegion.BoundingRect.Top + 1, Math.Min(leftRegion.BoundingRect.Bottom - 1, rightRegion.BoundingRect.Top));
digger.DigDownLeftLCorridor(tunnelMeetX, tunnelMeetY, leftRegion.BoundingRect.Right, rightRegion.BoundingRect.Top);
}
}
}
}