protected override IEnumerator <object?> OnPerform(GenerationContext context)
{
var wallFloor = context.GetFirst <IGridView <bool> >("WallFloor");
// create a new map
var map = new DungeonMap(context.Width, context.Height);
context.Add(map, "Map");
map.ApplyTerrainOverlay(wallFloor, GetTerrain);
yield return(null);
//TODO: Place doors
// https://github.com/Chris3606/TheSadRogue.Integration/blob/more-feature-dev/TheSadRogue.Integration.Example/MapGeneration/TranslateToMapStep.cs
// Spawn player
// var player = new GameEntity(Color.White, Color.Black, '@', (int) MapLayers.PLAYER)
// {
// Position = map.WalkabilityView.RandomPosition(true)
// };
// map.AddEntity(player);
//TODO: Spawn monsters
}