TEItemFrame.cs

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using System.IO;
using Terraria.DataStructures;
 
namespace Terraria.GameContent.Tile_Entities;
 
public class TEItemFrame : TileEntity, IFixLoadedData
{
    private static byte _myEntityID;
 
    public Item item;
 
    public override void RegisterTileEntityID(int assignedID)
    {
        _myEntityID = (byte)assignedID;
    }
 
    public override void NetPlaceEntityAttempt(int x, int y)
    {
        NetPlaceEntity(x, y);
    }
 
    public static void NetPlaceEntity(int x, int y)
    {
        int number = Place(x, y);
        NetMessage.SendData(86, -1, -1, null, number, x, y);
    }
 
    public override TileEntity GenerateInstance()
    {
        return new TEItemFrame();
    }
 
    public TEItemFrame()
    {
        item = new Item();
    }
 
    public static int Place(int x, int y)
    {
        TEItemFrame tEItemFrame = new TEItemFrame();
        tEItemFrame.Position = new Point16(x, y);
        tEItemFrame.ID = TileEntity.AssignNewID();
        tEItemFrame.type = _myEntityID;
        lock (TileEntity.EntityCreationLock)
        {
            TileEntity.ByID[tEItemFrame.ID] = tEItemFrame;
            TileEntity.ByPosition[tEItemFrame.Position] = tEItemFrame;
        }
        return tEItemFrame.ID;
    }
 
    public override bool IsTileValidForEntity(int x, int y)
    {
        return ValidTile(x, y);
    }
 
    public static int Hook_AfterPlacement(int x, int y, int type = 395, int style = 0, int direction = 1, int alternate = 0)
    {
        if (Main.netMode == 1)
        {
            NetMessage.SendTileSquare(Main.myPlayer, x, y, 2, 2);
            NetMessage.SendData(87, -1, -1, null, x, y, (int)_myEntityID);
            return -1;
        }
        return Place(x, y);
    }
 
    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));
            }
        }
    }
 
    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;
    }
 
    public static bool ValidTile(int x, int y)
    {
        if (!Main.tile[x, y].active() || Main.tile[x, y].type != 395 || Main.tile[x, y].frameY != 0 || Main.tile[x, y].frameX % 36 != 0)
        {
            return false;
        }
        return true;
    }
 
    public override void WriteExtraData(BinaryWriter writer, bool networkSend)
    {
        writer.Write((short)item.netID);
        writer.Write(item.prefix);
        writer.Write((short)item.stack);
    }
 
    public override void ReadExtraData(BinaryReader reader, bool networkSend)
    {
        item = new Item();
        item.netDefaults(reader.ReadInt16());
        item.Prefix(reader.ReadByte());
        item.stack = reader.ReadInt16();
    }
 
    public override string ToString()
    {
        return Position.X + "x  " + Position.Y + "y item: " + item;
    }
 
    public void DropItem()
    {
        if (Main.netMode != 1)
        {
            Item.NewItem(new EntitySource_TileBreak(Position.X, Position.Y), Position.X * 16, Position.Y * 16, 32, 32, item.netID, 1, noBroadcast: false, item.prefix);
        }
        item = new Item();
    }
 
    public static void TryPlacing(int x, int y, int netid, int prefix, int stack)
    {
        WorldGen.RangeFrame(x, y, x + 2, y + 2);
        int num = Find(x, y);
        if (num == -1)
        {
            int num2 = Item.NewItem(new EntitySource_TileBreak(x, y), x * 16, y * 16, 32, 32, 1);
            Main.item[num2].netDefaults(netid);
            Main.item[num2].Prefix(prefix);
            Main.item[num2].stack = stack;
            NetMessage.SendData(21, -1, -1, null, num2);
            return;
        }
        TEItemFrame tEItemFrame = (TEItemFrame)TileEntity.ByID[num];
        if (tEItemFrame.item.stack > 0)
        {
            tEItemFrame.DropItem();
        }
        tEItemFrame.item = new Item();
        tEItemFrame.item.netDefaults(netid);
        tEItemFrame.item.Prefix(prefix);
        tEItemFrame.item.stack = stack;
        NetMessage.SendData(86, -1, -1, null, tEItemFrame.ID, x, y);
    }
 
    public static void OnPlayerInteraction(Player player, int clickX, int clickY)
    {
        if (FitsItemFrame(player.inventory[player.selectedItem]) && !player.inventory[player.selectedItem].favorited)
        {
            player.GamepadEnableGrappleCooldown();
            PlaceItemInFrame(player, clickX, clickY);
            Recipe.FindRecipes();
            return;
        }
        int num = clickX;
        int num2 = clickY;
        if (Main.tile[num, num2].frameX % 36 != 0)
        {
            num--;
        }
        if (Main.tile[num, num2].frameY % 36 != 0)
        {
            num2--;
        }
        int num3 = Find(num, num2);
        if (num3 != -1 && ((TEItemFrame)TileEntity.ByID[num3]).item.stack > 0)
        {
            player.GamepadEnableGrappleCooldown();
            WorldGen.KillTile(clickX, clickY, fail: true);
            if (Main.netMode == 1)
            {
                NetMessage.SendData(17, -1, -1, null, 0, num, num2, 1f);
            }
        }
    }
 
    public static bool FitsItemFrame(Item i)
    {
        return i.stack > 0;
    }
 
    public static void PlaceItemInFrame(Player player, int x, int y)
    {
        if (!player.ItemTimeIsZero)
        {
            return;
        }
        if (Main.tile[x, y].frameX % 36 != 0)
        {
            x--;
        }
        if (Main.tile[x, y].frameY % 36 != 0)
        {
            y--;
        }
        int num = Find(x, y);
        if (num == -1)
        {
            return;
        }
        if (((TEItemFrame)TileEntity.ByID[num]).item.stack > 0)
        {
            WorldGen.KillTile(x, y, fail: true);
            if (Main.netMode == 1)
            {
                NetMessage.SendData(17, -1, -1, null, 0, Player.tileTargetX, y, 1f);
            }
        }
        if (Main.netMode == 1)
        {
            NetMessage.SendData(89, -1, -1, null, x, y, player.selectedItem, player.whoAmI, 1);
        }
        else
        {
            TryPlacing(x, y, player.inventory[player.selectedItem].netID, player.inventory[player.selectedItem].prefix, 1);
        }
        player.inventory[player.selectedItem].stack--;
        if (player.inventory[player.selectedItem].stack <= 0)
        {
            player.inventory[player.selectedItem].SetDefaults();
            Main.mouseItem.SetDefaults();
        }
        if (player.selectedItem == 58)
        {
            Main.mouseItem = player.inventory[player.selectedItem].Clone();
        }
        player.releaseUseItem = false;
        player.mouseInterface = true;
        player.PlayDroppedItemAnimation(20);
        WorldGen.RangeFrame(x, y, x + 2, y + 2);
    }
 
    public void FixLoadedData()
    {
        item.FixAgainstExploit();
    }
}