IEnumerator RenderDungeon()
{
tiles.DisableAll();
for (int x = 0; x < dungeonWidth; x++)
{
for (int y = 0; y < dungeonHeight; y++)
{
if (dungeon[x, y] == 2)
{
dungeon[x, y] = 0;
}
if (dungeon[x, y] == 1)
{
ObjectPool.PooledObject tile = tiles.GetObjectFromPool;
tile.SetActive(true);
tile.scale = Vector3.one;
tile.position = new Vector3(
x - (dungeonWidth / 2) + (tile.scale.x / 2),
y - (dungeonHeight / 2) + (tile.scale.y / 2)
);
}
}
yield return(null);
}
}
IEnumerator FloodFill(IntGrid floodFilledCells, ObjectPool filledTiles, Point point)
{
Point up = point + Vector2.up;
Point down = point + Vector2.down;
Point left = point + Vector2.left;
Point right = point + Vector2.right;
if (point.x < 0 || point.y < 0 || point.x > dungeonWidth - 1 || point.y > dungeonHeight - 1)
{
floodFilledPointCount--;
yield break;
}
if (floodFilledCells[point.x, point.y] != 0)
{
floodFilledPointCount--;
yield break;
}
floodFilledCells[point.x, point.y] = 2;
ObjectPool.PooledObject pooledObj = filledTiles.GetObjectFromPool;
pooledObj.position = new Vector2(
point.x - (dungeonWidth / 2) + (pooledObj.scale.x / 2),
point.y - (dungeonHeight / 2) + (pooledObj.scale.y / 2)
);
SpriteRenderer r = pooledObj.gameObject.GetComponent <SpriteRenderer>();
if (r != null)
{
r.color = Color.red;
}
yield return(null);
if (dungeon[up] == 0)
{
floodFilledPointCount++;
StartCoroutine(FloodFill(floodFilledCells, filledTiles, up));
}
if (dungeon[down] == 0)
{
floodFilledPointCount++;
StartCoroutine(FloodFill(floodFilledCells, filledTiles, down));
}
if (dungeon[left] == 0)
{
floodFilledPointCount++;
StartCoroutine(FloodFill(floodFilledCells, filledTiles, left));
}
if (dungeon[right] == 0)
{
floodFilledPointCount++;
StartCoroutine(FloodFill(floodFilledCells, filledTiles, right));
}
floodFilledPointCount--;
}
IEnumerator GenerateDungeon()
{
if (dungeonHeight % 2 == 0)
{
throw new System.FormatException("dungeonHeight should be an odd number");
}
if (dungeonWidth % 2 == 0)
{
throw new System.FormatException("roomMaxDimension should be an odd number");
}
if (roomMinDimension % 2 == 0)
{
throw new System.FormatException("roomMinDimension should be an odd number");
}
if (roomMaxDimension % 2 == 0)
{
throw new System.FormatException("roomMaxDimension should be an odd number");
}
if (tileSize % 2 == 0)
{
throw new System.FormatException("tileSize should be an odd number");
}
isGenerating = true;
retryCount = 0;
dungeonRect = Rect.zero;
dungeonRect.height = dungeonHeight - 2; // minus 2 to give a 1 unit edge padding around the whole dungeon
dungeonRect.width = dungeonWidth - 2; // minus 2 to give a 1 unit edge padding around the whole dungeon
dungeonRect.center = transform.position;
if (tiles != null)
{
tiles.ClearPool();
}
Camera.main.orthographicSize = Mathf.Max(dungeonWidth / 2, dungeonHeight / 2) + 2;
dungeon = new IntGrid(dungeonWidth, dungeonHeight);
tiles = new ObjectPool(roomPrefab, dungeonWidth * dungeonHeight, false, false, transform);
// make retryAttempts attempts to place rooms randomly within the dungeon
while (retryCount < retryAttempts)
{
Vector2 randomPosition = new Vector2(ClampValueToOddNumber(Random.Range(0, dungeonWidth) - dungeonWidth / 2f), ClampValueToOddNumber(Random.Range(0, dungeonHeight) - dungeonHeight / 2f));
Vector2 randomScale = new Vector2(ClampValueToOddNumber(Random.Range(roomMinDimension, roomMaxDimension)), ClampValueToOddNumber(Random.Range(roomMinDimension, roomMaxDimension)));
Collider2D overlapBox = Physics2D.OverlapBox(randomPosition, randomScale + (Vector2.one * minDistanceBetweenRooms * 2), 0f);
if (overlapBox == null && IsRoomInBounds(randomPosition, randomScale))
{
ObjectPool.PooledObject room = tiles.GetObjectFromPool;
room.SetActive(true);
room.position = randomPosition;
room.scale = randomScale;
yield return(new WaitForSeconds(0.1f));
}
else
{
retryCount++;
}
}
// carve out the rooms from the array of cells and disable the rooms in the pool
foreach (KeyValuePair <string, ObjectPool.PooledObject> entry in tiles.GetObjectPool)
{
if (entry.Value.activeInHierarchy)
{
Vector3 roomPositionOffset = new Vector3(dungeonWidth / 2f, dungeonHeight / 2f);
GameObject room = entry.Value.gameObject;
Vector3 scale = room.transform.localScale;
for (float x = -scale.x / 2; x <= scale.x / 2; x++)
{
for (float y = -scale.y / 2; y <= scale.y / 2; y++)
{
Point point = new Point((int)x, (int)y) + room.transform.position + roomPositionOffset;
dungeon[point.x, point.y] = 2;
}
}
tiles.Disable(entry.Key);
yield return(null);
}
}
// generate the maze in the empty space of the dungeon
dungeon = new Maze(dungeon, true).mazeGrid;
yield return(StartCoroutine(RenderDungeon()));
yield return(StartCoroutine(StartFloodFill()));
yield return(StartCoroutine(RenderDungeon()));
yield return(StartCoroutine(RemoveDeadEnds()));
yield return(StartCoroutine(RenderDungeon()));
isGenerating = false;
}
