/// <summary>
/// Actually performs room placement in the scratchpad.
/// </summary>
/// <param name="roomData"></param>
/// <param name="mapExit"></param>
/// <param name="roomExit"></param>
/// <param name="scope"></param>
/// <param name="primaryPath"></param>
private void PlaceRoom(RoomData roomData, Vector2Int mapExit, Vector2Int roomExit, int scope, bool primaryPath)
{
int maxDistance = 0;
roomData.placeCount++;
for (int x = 0; x < roomData.width; ++x)
{
for (int y = 0; y < roomData.height; ++y)
{
int mapX = mapExit.x - roomExit.x + x;
int mapY = mapExit.y - roomExit.y + y;
Vector2Int mapPos = new Vector2Int(mapX, mapY);
char roomTile = roomData.Tile(x, y);
// Empty tiles shouldn't be represented in the dictionary
if (roomTile == RandomDungeonTileData.EMPTY_TILE)
{
continue;
}
// Create a new tile or edit a tile that already exists.
// This ensures we don't generate unnecessary garbage.
RandomDungeonTileData td = null;
if (!mRoomScratch.ContainsKey(mapPos))
{
td = new RandomDungeonTileData();
mRoomScratch.Add(mapPos, td);
float distance = Vector2Int.Distance(roomExit, new Vector2Int(x, y));
int distanceInt = Mathf.CeilToInt(distance);
maxDistance = Mathf.Max(maxDistance, distanceInt);
td.tileId = mCurrentTileId + distanceInt;
td.position = mapPos;
}
else
{
td = mRoomScratch[mapPos];
td.Clear();
}
td.tileType = roomTile;
td.scope = scope;
td.room = mCurrentRoomId;
if (primaryPath)
{
td.distanceFromPrimaryPath = 0;
}
else
{
// todo bdsowers - this is not perfect
// maybe it doesn't need to be perfect, we'll see
int mapExitDistance = mRoomScratch[mapExit].distanceFromPrimaryPath;
td.distanceFromPrimaryPath = mapExitDistance + 1;
maxDistanceFromPrimaryPath = Mathf.Max(maxDistanceFromPrimaryPath, td.distanceFromPrimaryPath);
}
// Trap
// Register it in the map proper as a walkable tile
// give a block of trap tiles the same identifier - they form one large trap
if (roomTile == RandomDungeonTileData.TRAP_TILE)
{
int neighborTrap = NeighborTrap(mapX, mapY);
int trapId = neighborTrap;
if (trapId == -1)
{
trapId = mCurrentTrapId;
mCurrentTrapId++;
}
td.tileType = RandomDungeonTileData.WALKABLE_TILE;
td.trap = trapId;
}
else if (roomTile == RandomDungeonTileData.POSSIBLE_CHEST_TILE)
{
td.tileType = RandomDungeonTileData.WALKABLE_TILE;
td.chest = 1;
}
else if (roomTile == RandomDungeonTileData.GUARANTEED_CHEST_TILE)
{
td.tileType = RandomDungeonTileData.WALKABLE_TILE;
td.chest = 2;
}
// Add the new exit to the list of available exits
if (roomTile == RandomDungeonTileData.EXIT_TILE)
{
mAvailableExits.Add(mapPos);
}
}
}
++mCurrentRoomId;
mCurrentTileId += maxDistance + 1;
}
/// <summary>
/// Repeatedly tries to place a room, choosing a random room from the room set and a random exit to place it off of.
/// This will retry some maximum number of times and quit if it never finds a valid choice.
/// </summary>
/// <param name="roomCategory"></param>
/// <param name="primaryPath"></param>
/// <param name="scope"></param>
/// <param name="roomPlacementOptions"></param>
/// <param name="roomDataOverride"></param>
/// <returns>The room data for the room that was placed, or null if no room could be placed.</returns>
private RoomData TryPlaceRoom(string roomCategory, bool primaryPath, int scope, RoomPlacementOptions roomPlacementOptions = RoomPlacementOptions.None, RoomData roomDataOverride = null)
{
int maxAttempts = 200;
while (maxAttempts > 0)
{
Vector2Int mapExit = ChooseMapExitForNextRoom();
RoomData randomRoom = roomDataOverride != null ? roomDataOverride : mRoomSet.RandomRoomOfCategory(roomCategory, mPreviousRoomPlaced, mRNG);
if (randomRoom == null)
{
--maxAttempts;
continue;
}
Vector2Int roomExit = randomRoom.RandomExit(mRNG);
if (scope == -1)
{
scope = mRoomScratch[mapExit].scope;
}
if (!RoomHasInvalidCollision(randomRoom, mapExit, roomExit, scope, roomPlacementOptions))
{
// If we're constructing a primary path, clear out any exits currently
// in our list. Placing a room will add new available exits to build off of.
// This also guards against the primary path looping in on itself.
if (primaryPath)
{
mAvailableExits.Clear();
mPrimaryPathPositions.Add(new Vector2Int(mapExit.x, mapExit.y));
}
mAvailableExits.Remove(mapExit);
PlaceRoom(randomRoom, mapExit, roomExit, scope, primaryPath);
// The probability of picking a room lowers each time it's picked
randomRoom.probability /= 2;
mPreviousRoomPlaced = randomRoom;
mPreviousMapExitUsed = mapExit;
return(randomRoom);
}
--maxAttempts;
}
return(null);
}
