Searches.cs

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using Microsoft.Xna.Framework;
 
namespace Terraria.WorldBuilding;
 
public static class Searches
{
    public class Left : GenSearch
    {
        private int _maxDistance;
 
        public Left(int maxDistance)
        {
            _maxDistance = maxDistance;
        }
 
        public override Point Find(Point origin)
        {
            for (int i = 0; i < _maxDistance; i++)
            {
                if (Check(origin.X - i, origin.Y))
                {
                    return new Point(origin.X - i, origin.Y);
                }
            }
            return GenSearch.NOT_FOUND;
        }
    }
 
    public class Right : GenSearch
    {
        private int _maxDistance;
 
        public Right(int maxDistance)
        {
            _maxDistance = maxDistance;
        }
 
        public override Point Find(Point origin)
        {
            for (int i = 0; i < _maxDistance; i++)
            {
                if (Check(origin.X + i, origin.Y))
                {
                    return new Point(origin.X + i, origin.Y);
                }
            }
            return GenSearch.NOT_FOUND;
        }
    }
 
    public class Down : GenSearch
    {
        private int _maxDistance;
 
        public Down(int maxDistance)
        {
            _maxDistance = maxDistance;
        }
 
        public override Point Find(Point origin)
        {
            for (int i = 0; i < _maxDistance && origin.Y + i < Main.maxTilesY; i++)
            {
                if (Check(origin.X, origin.Y + i))
                {
                    return new Point(origin.X, origin.Y + i);
                }
            }
            return GenSearch.NOT_FOUND;
        }
    }
 
    public class Up : GenSearch
    {
        private int _maxDistance;
 
        public Up(int maxDistance)
        {
            _maxDistance = maxDistance;
        }
 
        public override Point Find(Point origin)
        {
            for (int i = 0; i < _maxDistance; i++)
            {
                if (Check(origin.X, origin.Y - i))
                {
                    return new Point(origin.X, origin.Y - i);
                }
            }
            return GenSearch.NOT_FOUND;
        }
    }
 
    public class Rectangle : GenSearch
    {
        private int _width;
 
        private int _height;
 
        public Rectangle(int width, int height)
        {
            _width = width;
            _height = height;
        }
 
        public override Point Find(Point origin)
        {
            for (int i = 0; i < _width; i++)
            {
                for (int j = 0; j < _height; j++)
                {
                    if (Check(origin.X + i, origin.Y + j))
                    {
                        return new Point(origin.X + i, origin.Y + j);
                    }
                }
            }
            return GenSearch.NOT_FOUND;
        }
    }
 
    public static GenSearch Chain(GenSearch search, params GenCondition[] conditions)
    {
        return search.Conditions(conditions);
    }
}