private void Paint(TerrainPosition position, TerrainTileDefinitionResource tileData, List<Int32>visitedPositions)
{
var initialTileKey = Terrain.GetTileKey(position);
Terrain.SetTile(position, tileData);
visitedPositions.Add(position.Row * Terrain.Columns + position.Column);
// North
if (position.Row > 0)
{
if (!visitedPositions.Contains((position.Row - 1) * Terrain.Columns + position.Column))
{
var newPosition = new TerrainPosition() { Row = position.Row - 1, Column = position.Column };
if (Terrain.GetTileKey(newPosition) == initialTileKey)
{
Paint(newPosition, tileData, visitedPositions);
}
}
}
// South
if (position.Row < (Terrain.Rows - 1))
{
if (!visitedPositions.Contains((position.Row + 1) * Terrain.Columns + position.Column))
{
var newPosition = new TerrainPosition() { Row = position.Row + 1, Column = position.Column };
if (Terrain.GetTileKey(newPosition) == initialTileKey)
{
Paint(newPosition, tileData, visitedPositions);
}
}
}
// West
if (position.Column < (Terrain.Columns - 1))
{
if (!visitedPositions.Contains(position.Row * Terrain.Columns + position.Column + 1))
{
var newPosition = new TerrainPosition() { Row = position.Row, Column = position.Column + 1 };
if (Terrain.GetTileKey(newPosition) == initialTileKey)
{
Paint(newPosition, tileData, visitedPositions);
}
}
}
// East
if (position.Column > 0)
{
if (!visitedPositions.Contains(position.Row * Terrain.Columns + position.Column - 1))
{
var newPosition = new TerrainPosition() { Row = position.Row, Column = position.Column - 1 };
if (Terrain.GetTileKey(newPosition) == initialTileKey)
{
Paint(newPosition, tileData, visitedPositions);
}
}
}
}
public void SetTile(TerrainPosition position, TerrainTileDefinitionResource tileResource)
{
var tilesAtPosition = _tiles.Where(x => x.Column == position.Column && x.Row == position.Row);
if (tilesAtPosition.Count() > 0)
{
foreach (var tile in tilesAtPosition.ToArray())
_tiles.Remove(tile);
}
var newTile = new Tile() { Key = tileResource.Key, Row = position.Row, Column = position.Column, Sprite = _spriteLoader.LoadSprite(tileResource.SpriteKey) };
_tiles.Add(newTile);
}
