TETeleportationPylon.cs

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using Terraria.DataStructures;
 
namespace Terraria.GameContent.Tile_Entities;
 
public class TETeleportationPylon : TileEntity
{
    private static byte _myEntityID;
 
    private const int MyTileID = 597;
 
    private const int entityTileWidth = 3;
 
    private const int entityTileHeight = 4;
 
    public override void RegisterTileEntityID(int assignedID)
    {
        _myEntityID = (byte)assignedID;
    }
 
    public override TileEntity GenerateInstance()
    {
        return new TETeleportationPylon();
    }
 
    public override void NetPlaceEntityAttempt(int x, int y)
    {
        if (!TryGetPylonTypeFromTileCoords(x, y, out var pylonType))
        {
            RejectPlacementFromNet(x, y);
            return;
        }
        if (Main.PylonSystem.HasPylonOfType(pylonType))
        {
            RejectPlacementFromNet(x, y);
            return;
        }
        int number = Place(x, y);
        NetMessage.SendData(86, -1, -1, null, number, x, y);
    }
 
    public bool TryGetPylonType(out TeleportPylonType pylonType)
    {
        return TryGetPylonTypeFromTileCoords(Position.X, Position.Y, out pylonType);
    }
 
    private static void RejectPlacementFromNet(int x, int y)
    {
        WorldGen.KillTile(x, y);
        if (Main.netMode == 2)
        {
            NetMessage.SendData(17, -1, -1, null, 0, x, y);
        }
    }
 
    public static int Place(int x, int y)
    {
        TETeleportationPylon tETeleportationPylon = new TETeleportationPylon();
        tETeleportationPylon.Position = new Point16(x, y);
        tETeleportationPylon.ID = TileEntity.AssignNewID();
        tETeleportationPylon.type = _myEntityID;
        lock (TileEntity.EntityCreationLock)
        {
            TileEntity.ByID[tETeleportationPylon.ID] = tETeleportationPylon;
            TileEntity.ByPosition[tETeleportationPylon.Position] = tETeleportationPylon;
        }
        Main.PylonSystem.RequestImmediateUpdate();
        return tETeleportationPylon.ID;
    }
 
    public static void Kill(int x, int y)
    {
        if (TileEntity.ByPosition.TryGetValue(new Point16(x, y), out var value) && value.type == _myEntityID)
        {
            lock (TileEntity.EntityCreationLock)
            {
                TileEntity.ByID.Remove(value.ID);
                TileEntity.ByPosition.Remove(new Point16(x, y));
            }
            Main.PylonSystem.RequestImmediateUpdate();
        }
    }
 
    public override string ToString()
    {
        return Position.X + "x  " + Position.Y + "y";
    }
 
    public static void Framing_CheckTile(int callX, int callY)
    {
        if (WorldGen.destroyObject)
        {
            return;
        }
        int num = callX;
        int num2 = callY;
        Tile tileSafely = Framing.GetTileSafely(callX, callY);
        num -= tileSafely.frameX / 18 % 3;
        num2 -= tileSafely.frameY / 18 % 4;
        int pylonStyleFromTile = GetPylonStyleFromTile(tileSafely);
        bool flag = false;
        for (int i = num; i < num + 3; i++)
        {
            for (int j = num2; j < num2 + 4; j++)
            {
                Tile tile = Main.tile[i, j];
                if (!tile.active() || tile.type != 597)
                {
                    flag = true;
                }
            }
        }
        if (!WorldGen.SolidTileAllowBottomSlope(num, num2 + 4) || !WorldGen.SolidTileAllowBottomSlope(num + 1, num2 + 4) || !WorldGen.SolidTileAllowBottomSlope(num + 2, num2 + 4))
        {
            flag = true;
        }
        if (!flag)
        {
            return;
        }
        Kill(num, num2);
        int pylonItemTypeFromTileStyle = GetPylonItemTypeFromTileStyle(pylonStyleFromTile);
        Item.NewItem(new EntitySource_TileBreak(num, num2), num * 16, num2 * 16, 48, 64, pylonItemTypeFromTileStyle);
        WorldGen.destroyObject = true;
        for (int k = num; k < num + 3; k++)
        {
            for (int l = num2; l < num2 + 4; l++)
            {
                if (Main.tile[k, l].active() && Main.tile[k, l].type == 597)
                {
                    WorldGen.KillTile(k, l);
                }
            }
        }
        WorldGen.destroyObject = false;
    }
 
    public static int GetPylonStyleFromTile(Tile tile)
    {
        return tile.frameX / 54;
    }
 
    public static int GetPylonItemTypeFromTileStyle(int style)
    {
        return style switch
        {
            1 => 4875, 
            2 => 4916, 
            3 => 4917, 
            4 => 4918, 
            5 => 4919, 
            6 => 4920, 
            7 => 4921, 
            8 => 4951, 
            _ => 4876, 
        };
    }
 
    public override bool IsTileValidForEntity(int x, int y)
    {
        if (!Main.tile[x, y].active() || Main.tile[x, y].type != 597 || Main.tile[x, y].frameY != 0 || Main.tile[x, y].frameX % 54 != 0)
        {
            return false;
        }
        return true;
    }
 
    public static int PlacementPreviewHook_AfterPlacement(int x, int y, int type = 597, int style = 0, int direction = 1, int alternate = 0)
    {
        if (Main.netMode == 1)
        {
            NetMessage.SendTileSquare(Main.myPlayer, x - 1, y - 3, 3, 4);
            NetMessage.SendData(87, -1, -1, null, x + -1, y + -3, (int)_myEntityID);
            return -1;
        }
        return Place(x + -1, y + -3);
    }
 
    public static int PlacementPreviewHook_CheckIfCanPlace(int x, int y, int type = 597, int style = 0, int direction = 1, int alternate = 0)
    {
        TeleportPylonType pylonTypeFromPylonTileStyle = GetPylonTypeFromPylonTileStyle(style);
        if (Main.PylonSystem.HasPylonOfType(pylonTypeFromPylonTileStyle))
        {
            return 1;
        }
        return 0;
    }
 
    private bool TryGetPylonTypeFromTileCoords(int x, int y, out TeleportPylonType pylonType)
    {
        pylonType = TeleportPylonType.SurfacePurity;
        Tile tile = Main.tile[x, y];
        if (tile == null || !tile.active() || tile.type != 597)
        {
            return false;
        }
        int pylonStyle = tile.frameX / 54;
        pylonType = GetPylonTypeFromPylonTileStyle(pylonStyle);
        return true;
    }
 
    private static TeleportPylonType GetPylonTypeFromPylonTileStyle(int pylonStyle)
    {
        return (TeleportPylonType)pylonStyle;
    }
 
    public static int Find(int x, int y)
    {
        if (TileEntity.ByPosition.TryGetValue(new Point16(x, y), out var value) && value.type == _myEntityID)
        {
            return value.ID;
        }
        return -1;
    }
}