/***************************************************************************
 *                                TileData.cs
 *                            -------------------
 *   begin                : May 1, 2002
 *   copyright            : (C) The RunUO Software Team
 *   email                : info@runuo.com
 *
 *   $Id: TileData.cs 4 2006-06-15 04:28:39Z mark $
 *
 ***************************************************************************/

/***************************************************************************
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 ***************************************************************************/

using System;
using System.IO;
using System.Text;

namespace Server
{
	public struct LandData
	{
		private string m_Name;
		private TileFlag m_Flags;

		public LandData( string name, TileFlag flags )
		{
			m_Name = name;
			m_Flags = flags;
		}

		public string Name
		{
			get{ return m_Name; }
			set{ m_Name = value; }
		}

		public TileFlag Flags
		{
			get{ return m_Flags; }
			set{ m_Flags = value; }
		}
	}

	public struct ItemData
	{
		private string m_Name;
		private TileFlag m_Flags;
		private byte m_Weight;
		private byte m_Quality;
        private int m_Quantity;
        private ushort m_Value;
		private byte m_Height;

        public ItemData(string name, TileFlag flags, byte weight, byte quality, int quantity, ushort value, byte height)
		{
			m_Name = name;
			m_Flags = flags;
			m_Weight = weight;
			m_Quality = quality;
			m_Quantity = quantity;
			m_Value = value;
			m_Height = height;
		}

        /// <summary>
        /// CHAR[20] Tile Name
        /// </summary>
		public string Name
		{
			get{ return m_Name; }
			set{ m_Name = value; }
		}

		public TileFlag Flags
		{
			get{ return m_Flags; }
			set{ m_Flags = value; }
		}

		public bool Bridge
		{
			get{ return (m_Flags & TileFlag.Bridge) != 0; }
			set
			{
				if ( value )
					m_Flags |= TileFlag.Bridge;
				else
					m_Flags &= ~TileFlag.Bridge;
			}
		}

		public bool Impassable
		{
			get{ return (m_Flags & TileFlag.Impassable) != 0; }
			set
			{
				if ( value )
					m_Flags |= TileFlag.Impassable;
				else
					m_Flags &= ~TileFlag.Impassable;
			}
		}

		public bool Surface
		{
			get{ return (m_Flags & TileFlag.Surface) != 0; }
			set
			{
				if ( value )
					m_Flags |= TileFlag.Surface;
				else
					m_Flags &= ~TileFlag.Surface;
			}
		}

        /// <summary>
        /// Weight (weight of the item, 255 means not movable)
        /// </summary>
		public int Weight
		{
			get{ return m_Weight; }
			set{ m_Weight = (byte)value; }
		}

        /// <summary>
        /// Quality (If Wearable, this is a Layer. If Light Source, this is Light ID)
        /// </summary>
		public int Quality
		{
			get{ return m_Quality; }
			set{ m_Quality = (byte)value; }
		}

        /// <summary>
        /// Quantity/MiscData: Resources: looks like visible amount, possibly amount required to construct, Books: pages, Scrolls: spell number, Weapon: Weapon Class, Armor: Armor Class
        /// </summary>
		public int Quantity
		{
			get{ return m_Quantity; }
			set{ m_Quantity = value; }
		}

        /// <summary>
        /// BaseValue (is used by vendors): Possibly the value of resources in the item.
        /// </summary>
		public int Value
		{
			get{ return m_Value; }
			set{ m_Value = (ushort)value; }
		}

        /// <summary>
        /// Height of item
        /// </summary>
		public int Height
		{
			get{ return m_Height; }
			set{ m_Height = (byte)value; }
		}

		public int CalcHeight
		{
			get
			{
				if ( (m_Flags & TileFlag.Bridge) != 0 )
					return m_Height / 2;
				else
					return m_Height;
			}
		}
	}

	[Flags]
	public enum TileFlag
	{
		None			= 0x00000000,
		Background		= 0x00000001,
		Weapon			= 0x00000002,
		Transparent		= 0x00000004,
		Translucent		= 0x00000008,
		Wall			= 0x00000010,
		Damaging		= 0x00000020,
		Impassable		= 0x00000040,
		Wet				= 0x00000080,
		Unknown1		= 0x00000100,
		Surface			= 0x00000200,
		Bridge			= 0x00000400,
		Generic			= 0x00000800,
		Window			= 0x00001000,
		NoShoot			= 0x00002000,
		ArticleA		= 0x00004000,
		ArticleAn		= 0x00008000,
		Internal		= 0x00010000,
		Foliage			= 0x00020000,
		PartialHue		= 0x00040000,
		Unknown2		= 0x00080000,
		Map				= 0x00100000,
		Container		= 0x00200000,
		Wearable		= 0x00400000,
		LightSource		= 0x00800000,
		Animation		= 0x01000000,
		NoDiagonal		= 0x02000000,
		Unknown3		= 0x04000000,
		Armor			= 0x08000000,
		Roof			= 0x10000000,
		Door			= 0x20000000,
		StairBack		= 0x40000000,
		StairRight		= unchecked( (int)0x80000000 )
	}

	public class TileData
	{
		private static LandData[] m_LandData;
		private static ItemData[] m_ItemData;

		public static LandData[] LandTable
		{
			get
			{
				return m_LandData;
			}
		}

		public static ItemData[] ItemTable
		{
			get
			{
				return m_ItemData;
			}
		}

		private static byte[] m_StringBuffer = new byte[20];

		private static string ReadNameString( BinaryReader bin )
		{
			bin.Read( m_StringBuffer, 0, 20 );

			int count;

			for ( count = 0; count < 20 && m_StringBuffer[count] != 0; ++count );

			return Encoding.ASCII.GetString( m_StringBuffer, 0, count );
		}

        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1065:DoNotRaiseExceptionsInUnexpectedLocations", Justification = "This is done for the purpose of terminating the application.")]
        static TileData()
		{
			string filePath = Core.FindDataFile( "tiledata.mul" );

			if ( File.Exists( filePath ) )
			{
                Console.WriteLine("Loading TileData from {0}", filePath);
				using ( FileStream fs = new FileStream( filePath, FileMode.Open, FileAccess.Read, FileShare.Read ) )
				{
					BinaryReader bin = new BinaryReader( fs );

					m_LandData = new LandData[0x4000];

					for ( int i = 0; i < 0x4000; ++i )
					{
						if ( (i & 0x1F) == 0 )
						{
							bin.ReadInt32(); // header
						}

						TileFlag flags = (TileFlag)bin.ReadInt32();
						bin.ReadInt16(); // skip 2 bytes -- textureID

						m_LandData[i] = new LandData( ReadNameString( bin ), flags );
					}

					m_ItemData = new ItemData[0x4000];

					for ( int i = 0; i < 0x4000; ++i )
					{
						if ( (i & 0x1F) == 0 )
						{
							bin.ReadInt32(); // header
						}

                        TileFlag flags = (TileFlag)bin.ReadInt32();
                        byte weight = bin.ReadByte();                // Weight (weight of the item, 255 means not movable
                        byte quality = bin.ReadByte();               // Quality (If Wearable, this is a Layer. If Light Source, this is Light ID)
                        int quantity = bin.ReadInt32();              // Quantity/MiscData: Resources: looks like visible amount, possibly amount required to construct, Books: pages, Scrolls: spell number, Weapon: Weapon Class, Armor: Armor Class
                        /*ushort animID =*/ bin.ReadUInt16();        // Anim ID (The Body ID the animatation. Add 50,000 and 60,000 respectivefully to get the two gump indicies assocaited with this tile)
                        /*ushort hue =*/ bin.ReadUInt16();           // Hue (perhaps colored light, or for client rendering)
                        ushort value = bin.ReadUInt16();             // BaseValue (is used by vendors): Possibly the value of resources in the item.
                        byte height = bin.ReadByte();                // Height of item

						m_ItemData[i] = new ItemData( ReadNameString( bin ), flags, weight, quality, quantity, value, height );
					}
				}
			}
			else
			{
				Console.WriteLine( "tiledata.mul was not found" );
				Console.WriteLine( "Make sure your Scripts/Misc/DataPath.cs is properly configured" );
				Console.WriteLine( "After pressing return an exception will be thrown and the server will terminate" );

				throw new Exception( String.Format( "TileData: {0} not found", filePath ) );
			}
		}
	}
}