var __LM_EXTRA_HI =
{
    get: function( ){ return (this.extra & 0xF0) >> 4; },
    set: function(x){ this.extra = (this.extra & 0x0F) | ((x & 0x0F) << 4); },
};

var __LM_EXTRA_HI_PLUS1 =
{
    get: function( ){ return 1 + ((this.extra & 0xF0) >> 4); },
    set: function(x){ --x; this.extra = (this.extra & 0x0F) | ((x & 0x0F) << 4); },
};

var __LM_EXTRA_LO =
{
    get: function( ){ return this.extra & 0x0F; },
    set: function(x){ this.extra = (this.extra & 0xF0) | (x & 0x0F); },
};

var __LM_EXTRA_LO_PLUS1 =
{
    get: function( ){ return 1 + (this.extra & 0x0F); },
    set: function(x){ --x; this.extra = (this.extra & 0xF0) | (x & 0x0F); },
};

var __LM_EXTRA_BYTE_PLUS1 =
{
    get: function( ){ return 1 + (this.extra & 0xFF); },
    set: function(x){ --x; this.extra = x & 0xFF; },
};

var __LUNAR_MAGIC_STANDARD = new Map(
[
    [0x01, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Water Tiles 1" }],
    [0x02, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Invisible Coin Blocks" }],
    [0x03, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Invisible Note Blocks" }],
    [0x04, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Invisible POW Coins" }],
    [0x05, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Coins" }],
    [0x06, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Non-Solid Dirt" }],
    [0x07, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Water Tiles 2" }],
    [0x08, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Note Blocks" }],
    [0x09, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Turn Blocks" }],
    [0x0A, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Coin Blocks" }],
    [0x0B, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Throw Blocks" }],
    [0x0C, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Munchers" }],
    [0x0D, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Grey Cement Blocks" }],
    [0x0E, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Used (Brown) Blocks" }],
    [0x0F, { w: 2, h: __LM_EXTRA_HI_PLUS1, other: __LM_EXTRA_LO, name: "Vertical Pipe" }],
    [0x10, { w: __LM_EXTRA_LO_PLUS1, h: 2, other: __LM_EXTRA_HI, name: "Horizontal Pipe" }],
    [0x11, { w: 1, h: __LM_EXTRA_HI_PLUS1, other: __LM_EXTRA_LO, name: "Bullet Shooter" }],
    [0x13, { w: 1, h: __LM_EXTRA_HI_PLUS1, other: __LM_EXTRA_LO, name: "Wall/Vine" }],
    [0x14, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Ledge" }],
    [0x15, { w: 3, h: __LM_EXTRA_HI_PLUS1, other: __LM_EXTRA_LO, name: "Goal/Midway Point" }],
    [0x16, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Purple Coins" }],
    [0x17, { w: __LM_EXTRA_LO_PLUS1, h: 1, other: __LM_EXTRA_HI, name: "Rope/Clouds" }],
    [0x18, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Water with Animated Surface" }],
    [0x19, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Water with Normal Surface" }],
    [0x1A, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Mud/Lava with Animated Surface" }],
    [0x1B, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Fence with Top" }],
    [0x1C, { w: __LM_EXTRA_LO_PLUS1, h: 2, name: "Donut Bridge" }],
    [0x1D, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Fence with Bottom" }],
    [0x1E, { w: 1, h: __LM_EXTRA_HI_PLUS1, other: __LM_EXTRA_LO, name: "Fence Side (Snap)" }],
    [0x1F, { w: 1, h: __LM_EXTRA_HI_PLUS1, name: "Skinny Vertical Pipe/Bone/Log" }],
    [0x20, { w: __LM_EXTRA_LO_PLUS1, h: 1, name: "Skinny Horizontal Pipe/Bone/Log" }],
    [0x21, { w: __LM_EXTRA_BYTE_PLUS1, h: 3, name: "Wide-scale Ground Ledge" }],

    [0x12,
    {
        w: {
            get: function( )
            {
                let size = (this.extra & 0xF0) >> 4;
                switch (this.other)
                {
                    case 0: return 2*(1+size); break;
                    case 1: return 1*(1+size); break;
                    case 2: return 4*(1+size); break;
                    default: throw new Exception("Unexpected slope type.");
                }
            },
            set: function(x){ throw new Exception("Cannot set slope width."); },
        },
        h: __LM_EXTRA_HI_PLUS1, other: __LM_EXTRA_LO, name: "Sloped Ground"
    }],
]);

// 0 - 0,7,C, example level: 105 - YI1 (normal/cloud/forest)
var __LUNAR_MAGIC_TILESET_SPECIFIC_0 = new Map(
[
    [0x30, { w: 2, h: __LM_EXTRA_HI_PLUS1, name: "Ice Blue Vertical Pipe" }],
    [0x31, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Ice Blue Turn Blocks" }],
    [0x32, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Blue Switch Blocks" }],
    [0x34, { w: 1, h: __LM_EXTRA_HI_PLUS1, other: __LM_EXTRA_LO, name: "Wall (Forest)" }],
    [0x35, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Ledge (Forest)" }],
    [0x36, { w: 2, h: __LM_EXTRA_HI_PLUS1, name: "Large Tree Trunk (Forest)" }],
    [0x37, { w: 1, h: __LM_EXTRA_HI_PLUS1, other: __LM_EXTRA_LO, name: "Small Tree Trunk (Forest)" }],
    [0x38, { w: __LM_EXTRA_HI_PLUS1, h: __LM_EXTRA_LO_PLUS1, name: "Red Switch Blocks" }],

    [0x33,
    {
        w: {
            get: function( ){ return 16*(1+(this.extra & 0xFF)); },
            set: function(x){ this.extra = (x >> 4) - 1; },
        },
        h: 6, name: "Forest Tree Top"
    }],
]);

// 1 - 1, example level: 10D - bowser's castle (castle)
var __LUNAR_MAGIC_TILESET_SPECIFIC_1 = new Map(
[
]);

// 2 - 2,6,8, example level: 113 - vob3 (rope)
var __LUNAR_MAGIC_TILESET_SPECIFIC_2 = new Map(
[
]);

// 3 - 3,9,A,B,E, example level: 115 - vob2 (underground/switch/castle)
var __LUNAR_MAGIC_TILESET_SPECIFIC_3 = new Map(
[
]);

// 4 - 4,5,D, example level: 114 - valley ghost (switch/ghost)
var __LUNAR_MAGIC_TILESET_SPECIFIC_4 = new Map(
[
]);

var __LUNAR_MAGIC_TILESET_LOOKUP =
[
    __LUNAR_MAGIC_TILESET_SPECIFIC_0, // 0
    __LUNAR_MAGIC_TILESET_SPECIFIC_1, // 1
    __LUNAR_MAGIC_TILESET_SPECIFIC_2, // 2
    __LUNAR_MAGIC_TILESET_SPECIFIC_3, // 3
    __LUNAR_MAGIC_TILESET_SPECIFIC_4, // 4
    __LUNAR_MAGIC_TILESET_SPECIFIC_4, // 5
    __LUNAR_MAGIC_TILESET_SPECIFIC_2, // 6
    __LUNAR_MAGIC_TILESET_SPECIFIC_0, // 7
    __LUNAR_MAGIC_TILESET_SPECIFIC_2, // 8
    __LUNAR_MAGIC_TILESET_SPECIFIC_3, // 9
    __LUNAR_MAGIC_TILESET_SPECIFIC_3, // A
    __LUNAR_MAGIC_TILESET_SPECIFIC_3, // B
    __LUNAR_MAGIC_TILESET_SPECIFIC_0, // C
    __LUNAR_MAGIC_TILESET_SPECIFIC_4, // D
    __LUNAR_MAGIC_TILESET_SPECIFIC_3, // E
    null, // F - unused
];

var __LUNAR_MAGIC_EXTENDED = new Map(
[
]);