Passes.cs

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using Terraria.IO;
 
namespace Terraria.WorldBuilding;
 
public static class Passes
{
    public class Clear : GenPass
    {
        public Clear()
            : base("clear", 1.0)
        {
        }
 
        protected override void ApplyPass(GenerationProgress progress, GameConfiguration configuration)
        {
            for (int i = 0; i < GenBase._worldWidth; i++)
            {
                for (int j = 0; j < GenBase._worldHeight; j++)
                {
                    if (GenBase._tiles[i, j] == null)
                    {
                        GenBase._tiles[i, j] = new Tile();
                    }
                    else
                    {
                        GenBase._tiles[i, j].ClearEverything();
                    }
                }
            }
        }
    }
 
    public class ScatterCustom : GenPass
    {
        private CustomPerUnitAction _perUnit;
 
        private int _count;
 
        public ScatterCustom(string name, double loadWeight, int count, CustomPerUnitAction perUnit = null)
            : base(name, loadWeight)
        {
            _perUnit = perUnit;
            _count = count;
        }
 
        public void SetCustomAction(CustomPerUnitAction perUnit)
        {
            _perUnit = perUnit;
        }
 
        protected override void ApplyPass(GenerationProgress progress, GameConfiguration configuration)
        {
            int num = _count;
            while (num > 0)
            {
                if (_perUnit(GenBase._random.Next(1, GenBase._worldWidth), GenBase._random.Next(1, GenBase._worldHeight)))
                {
                    num--;
                }
            }
        }
    }
}