static byte[] mapping = new byte[256];

        static MapMCSharp() {
            mapping[100] = (byte)Block.Glass;       // op_glass
            mapping[101] = (byte)Block.Obsidian;    // opsidian
            mapping[102] = (byte)Block.Brick;       // op_brick
            mapping[103] = (byte)Block.Stone;       // op_stone
            mapping[104] = (byte)Block.Rocks;       // op_cobblestone
            mapping[105] = (byte)Block.Air;         // op_air
            mapping[106] = (byte)Block.Water;       // op_water

            mapping[110] = (byte)Block.Wood;        // wood_float
            mapping[111] = (byte)Block.Log;         // door
            mapping[112] = (byte)Block.Lava;        // lava_fast
            mapping[113] = (byte)Block.Obsidian;    // door2
            mapping[114] = (byte)Block.Glass;       // door3
            mapping[115] = (byte)Block.Stone;       // door4
            mapping[116] = (byte)Block.Leaves;      // door5
            mapping[117] = (byte)Block.Sand;        // door6
            mapping[118] = (byte)Block.Wood;        // door7
            mapping[119] = (byte)Block.Green;       // door8
            mapping[120] = (byte)Block.TNT;         // door9
            mapping[121] = (byte)Block.Stair;       // door10

            mapping[122] = (byte)Block.Log;         // tdoor
            mapping[123] = (byte)Block.Obsidian;    // tdoor2
            mapping[124] = (byte)Block.Glass;       // tdoor3
            mapping[125] = (byte)Block.Stone;       // tdoor4
            mapping[126] = (byte)Block.Leaves;      // tdoor5
            mapping[127] = (byte)Block.Sand;        // tdoor6
            mapping[128] = (byte)Block.Wood;        // tdoor7
            mapping[129] = (byte)Block.Green;       // tdoor8

            mapping[130] = (byte)Block.White;       // MsgWhite
            mapping[131] = (byte)Block.Black;       // MsgBlack
            mapping[132] = (byte)Block.Air;         // MsgAir
            mapping[133] = (byte)Block.Water;       // MsgWater
            mapping[134] = (byte)Block.Lava;        // MsgLava

            mapping[135] = (byte)Block.TNT;         // tdoor9
            mapping[136] = (byte)Block.Stair;       // tdoor10
            mapping[137] = (byte)Block.Air;         // tdoor11
            mapping[138] = (byte)Block.Water;       // tdoor12
            mapping[139] = (byte)Block.Lava;        // tdoor13

            mapping[140] = (byte)Block.Water;       // WaterDown
            mapping[141] = (byte)Block.Lava;        // LavaDown
            mapping[143] = (byte)Block.Aqua;        // WaterFaucet
            mapping[144] = (byte)Block.Orange;      // LavaFaucet

            mapping[145] = (byte)Block.Water;       // finiteWater
            mapping[146] = (byte)Block.Lava;        // finiteLava
            mapping[147] = (byte)Block.Cyan;        // finiteFaucet

            mapping[148] = (byte)Block.Log;         // odoor1
            mapping[149] = (byte)Block.Obsidian;    // odoor2
            mapping[150] = (byte)Block.Glass;       // odoor3
            mapping[151] = (byte)Block.Stone;       // odoor4
            mapping[152] = (byte)Block.Leaves;      // odoor5
            mapping[153] = (byte)Block.Sand;        // odoor6
            mapping[154] = (byte)Block.Wood;        // odoor7
            mapping[155] = (byte)Block.Green;       // odoor8
            mapping[156] = (byte)Block.TNT;         // odoor9
            mapping[157] = (byte)Block.Stair;       // odoor10
            mapping[158] = (byte)Block.Lava;        // odoor11
            mapping[159] = (byte)Block.Water;       // odoor12

            mapping[160] = (byte)Block.Air;         // air_portal
            mapping[161] = (byte)Block.Water;       // water_portal
            mapping[162] = (byte)Block.Lava;        // lava_portal

            mapping[164] = (byte)Block.Air;         // air_door
            mapping[165] = (byte)Block.Air;         // air_switch
            mapping[166] = (byte)Block.Water;       // water_door
            mapping[167] = (byte)Block.Lava;        // lava_door

            mapping[168] = (byte)Block.Air;         // odoor1_air
            mapping[169] = (byte)Block.Air;         // odoor2_air
            mapping[170] = (byte)Block.Air;         // odoor3_air
            mapping[171] = (byte)Block.Air;         // odoor4_air
            mapping[172] = (byte)Block.Air;         // odoor5_air
            mapping[173] = (byte)Block.Air;         // odoor6_air
            mapping[174] = (byte)Block.Air;         // odoor7_air

            mapping[175] = (byte)Block.Cyan;        // blue_portal
            mapping[176] = (byte)Block.Orange;      // orange_portal

            mapping[177] = (byte)Block.Air;         // odoor8_air
            mapping[178] = (byte)Block.Air;         // odoor9_air
            mapping[179] = (byte)Block.Air;         // odoor10_air
            mapping[180] = (byte)Block.Air;         // odoor11_air
            mapping[181] = (byte)Block.Air;         // odoor12_air

            mapping[182] = (byte)Block.TNT;         // smalltnt
            mapping[183] = (byte)Block.TNT;         // bigtnt
            mapping[184] = (byte)Block.Lava;        // tntexplosion
            mapping[185] = (byte)Block.Lava;        // fire

            mapping[187] = (byte)Block.Glass;       // rocketstart
            mapping[188] = (byte)Block.Gold;        // rockethead
            mapping[189] = (byte)Block.Steel;       // firework
            // all others default to 0/air
        }