using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using OpenRa.Game.GameRules;

namespace OpenRa.Game
{
	class PlaceBuilding : IOrderGenerator
	{
		public readonly Player Owner;
		public readonly string Name;

		public PlaceBuilding(Player owner, string name)
		{
			Owner = owner;
			Name = name;
		}

		public IEnumerable<Order> Order(int2 xy)
		{
			// todo: check that space is free
			var bi = (UnitInfo.BuildingInfo)Rules.UnitInfo[Name];
			if (Footprint.Tiles(bi, xy).Any(
				t => !Game.IsCellBuildable(t, 
					bi.WaterBound ? UnitMovementType.Float : UnitMovementType.Wheel)))
				yield break;

			yield return new PlaceBuildingOrder(this, xy);
		}

		public void PrepareOverlay(int2 xy)
		{
			Game.worldRenderer.uiOverlay.SetCurrentOverlay(xy, Name);
		}
	}
}