using System.Collections.Generic;
using Escape_Room_Engine.Engine.Scripts.Modules;
using UnityEngine;

namespace Escape_Room_Engine.Engine.Scripts.Requirements
{
    [CreateAssetMenu(menuName = "Requirements/Place Along Space Edges")]
    public class PlaceAlongSpaceEdges : PlacementRequirement
    {
        public override IEnumerable<Vector2Int> PlacementCandidates(Module module, Space space)
        {
            var edgePositions = new HashSet<Vector2Int>();
            
            for (var x = 0; x < space.rrDimensions.width; x++)
            {
                edgePositions.Add(new Vector2Int(x, 0));
                edgePositions.Add(new Vector2Int(x, space.rrDimensions.length - 1));
            }
            for (var z = 0; z < space.rrDimensions.length; z++)
            {
                edgePositions.Add(new Vector2Int(0, z));
                edgePositions.Add(new Vector2Int(space.rrDimensions.width - 1, z));
            }

            return edgePositions;
        }
    }
}