CultistRitual.cs

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using Microsoft.Xna.Framework;
using Terraria.DataStructures;
using Terraria.ID;
 
namespace Terraria.GameContent.Events;
 
public class CultistRitual
{
    public const int delayStart = 86400;
 
    public const int respawnDelay = 43200;
 
    private const int timePerCultist = 3600;
 
    private const int recheckStart = 600;
 
    public static int delay;
 
    public static int recheck;
 
    public static void UpdateTime()
    {
        if (Main.netMode == 1)
        {
            return;
        }
        delay -= Main.dayRate;
        if (delay < 0)
        {
            delay = 0;
        }
        recheck -= Main.dayRate;
        if (recheck < 0)
        {
            recheck = 0;
        }
        if (delay == 0 && recheck == 0)
        {
            recheck = 600;
            if (NPC.AnyDanger())
            {
                recheck *= 6;
            }
            else
            {
                TrySpawning(Main.dungeonX, Main.dungeonY);
            }
        }
    }
 
    public static void CultistSlain()
    {
        delay -= 3600;
    }
 
    public static void TabletDestroyed()
    {
        delay = 43200;
    }
 
    public static void TrySpawning(int x, int y)
    {
        if (!WorldGen.PlayerLOS(x - 6, y) && !WorldGen.PlayerLOS(x + 6, y) && CheckRitual(x, y))
        {
            NPC.NewNPC(new EntitySource_WorldEvent(), x * 16 + 8, (y - 4) * 16 - 8, 437);
        }
    }
 
    private static bool CheckRitual(int x, int y)
    {
        if (delay != 0 || !Main.hardMode || !NPC.downedGolemBoss || !NPC.downedBoss3)
        {
            return false;
        }
        if (y < 7 || WorldGen.SolidTile(Main.tile[x, y - 7]))
        {
            return false;
        }
        if (NPC.AnyNPCs(437))
        {
            return false;
        }
        Vector2 center = new Vector2(x * 16 + 8, y * 16 - 64 - 8 - 27);
        Point[] spawnPoints = null;
        if (!CheckFloor(center, out spawnPoints))
        {
            return false;
        }
        return true;
    }
 
    public static bool CheckFloor(Vector2 Center, out Point[] spawnPoints)
    {
        Point[] array = new Point[4];
        int num = 0;
        Point point = Center.ToTileCoordinates();
        for (int i = -5; i <= 5; i += 2)
        {
            if (i == -1 || i == 1)
            {
                continue;
            }
            for (int j = -5; j < 12; j++)
            {
                int num2 = point.X + i * 2;
                int num3 = point.Y + j;
                if ((WorldGen.SolidTile(num2, num3) || TileID.Sets.Platforms[Framing.GetTileSafely(num2, num3).type]) && (!Collision.SolidTiles(num2 - 1, num2 + 1, num3 - 3, num3 - 1) || (!Collision.SolidTiles(num2, num2, num3 - 3, num3 - 1) && !Collision.SolidTiles(num2 + 1, num2 + 1, num3 - 3, num3 - 2) && !Collision.SolidTiles(num2 - 1, num2 - 1, num3 - 3, num3 - 2))))
                {
                    array[num++] = new Point(num2, num3);
                    break;
                }
            }
        }
        if (num != 4)
        {
            spawnPoints = null;
            return false;
        }
        spawnPoints = array;
        return true;
    }
}