public void CreateLinkBetweenNodes(FloorNode a, FloorNode b, FloorNode.directionEnum directionFromAToB)
{
//if both nodes have no neighbour at the chosen direction
if (a.GetNeighbourNode(directionFromAToB) == null && b.GetNeighbourNode(GetOppositeDirection(directionFromAToB)) == null)
{
//add the new room as a neighbour of the existing room
a.SetNeighbourNode(directionFromAToB, b);
//add the existing room as a neighbour of the new room
b.SetNeighbourNode(GetOppositeDirection(directionFromAToB), a);
}
}
private void CreateRandomNode(FloorNode.roomTypeEnum roomType)
{
bool canBeCreated = false;
//debug count
int count = 0;
while (!canBeCreated && count < 1000)
{
count++;
//take an existing room
FloorNode existingNode = nodeList[Random.Range(0, nodeList.Count)];
//choose a random direction
var randomDirection = (FloorNode.directionEnum)Random.Range(0, 4);
//set the new room coord based on the existing room we used to place it
(int x, int y) = existingNode.GetCoord();
if (randomDirection == FloorNode.directionEnum.east)
{
x += 1;
}
if (randomDirection == FloorNode.directionEnum.west)
{
x -= 1;
}
if (randomDirection == FloorNode.directionEnum.north)
{
y += 1;
}
if (randomDirection == FloorNode.directionEnum.south)
{
y -= 1;
}
//if the existing room is a regular room, is not occupied, has no room at the direction chosen
//and does not exceed one of the maximum coordinate, we create the room there
if (existingNode.GetNeighbourNode(randomDirection) == null &&
!isTileOccupied(x, y) &&
existingNode.GetRoomType() == FloorNode.roomTypeEnum.regular &&
x < 4 && x > -4 && y < 4 && y > -4)
{
FloorNode newNode = new FloorNode();
newNode.SetRoomType(roomType);
//connect the new room with the existing room
CreateLinkBetweenNodes(existingNode, newNode, randomDirection);
newNode.SetCoord(x, y);
if (existingNode.GetRoomType() == FloorNode.roomTypeEnum.regular)
{
//check if there are rooms existing around the new room and connect them.
//This allow the level to have loops and not look like a tree
ConnectNodeNeighbours(newNode);
}
nodeList.Add(newNode);
canBeCreated = true;
}
}
}