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tiled-kaboom

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This is a map-loader for [kaboom](https://kaboomjs.com/) to load [tiled](https://www.mapeditor.org/) JSON maps.

github.com/notnullgames/tiled-kaboom

notnullgames/tiled-kaboom

1 lines • 11.8 kB
1
{"version":3,"file":"tiled-kaboom.cjs","sources":["../tiled-kaboom.js"],"sourcesContent":["/* global atob */\n// big array of characters that are suitable for maps\n// TODO: I got annoyed after 3001\nconst mapsymbols = [...new Array(4052)].reduce((a, v, c) => {\n if ([\n 92,\n 173,\n 847,\n 888,\n 889,\n 907,\n 909,\n 930,\n 1328,\n 1367,\n 1368,\n 1376,\n 1416,\n 1419,\n 1420,\n 1421,\n 1424,\n 1565,\n 1867,\n 1868,\n 2081,\n 2082,\n 2094,\n 2095,\n 2111,\n 2140,\n 2141,\n 2445,\n 2446,\n 2449,\n 2450,\n 2473,\n 2481,\n 2490,\n 2491,\n 2501,\n 2502,\n 2505,\n 2506,\n 2526,\n 2532,\n 2533,\n 2564,\n 2577,\n 2578,\n 2601,\n 2609,\n 2612,\n 2615,\n 2618,\n 2619,\n 2621,\n 2633,\n 2634,\n 2638,\n 2639,\n 2640,\n 2653,\n 2692,\n 2702,\n 2706,\n 2729,\n 2737,\n 2740,\n 2746,\n 2747,\n 2758,\n 2762,\n 2766,\n 2767,\n 2788,\n 2789,\n 2820,\n 2829,\n 2830,\n 2833,\n 2834,\n 2857,\n 2865,\n 2868,\n 2874,\n 2875,\n 2885,\n 2886,\n 2889,\n 2890,\n 2910,\n 2916,\n 2917,\n 2948,\n 2955,\n 2956,\n 2957,\n 2961,\n 2966,\n 2967,\n 2968,\n 2971,\n 2973,\n 2976,\n 2977,\n 2978,\n 2981,\n 2982,\n 2983,\n 2987,\n 2988,\n 2989\n\n ].includes(c)) {\n return a\n }\n\n if (c < 33) {\n return a\n }\n\n const ranges = [\n [126, 161],\n [895, 900],\n [1479, 1488],\n [1514, 1520],\n [1524, 1536],\n [1969, 1984],\n [2042, 2048],\n [2142, 2207],\n [2238, 2260],\n [2384, 2389],\n [2482, 2486],\n [2510, 2519],\n [2519, 2524],\n [2555, 2561],\n [2570, 2575],\n [2626, 2631],\n [2641, 2649],\n [2654, 2662],\n [2677, 2689],\n [2768, 2784],\n [2801, 2809],\n [2809, 2817],\n [2893, 2902],\n [2903, 2908],\n [2935, 2946]\n ]\n\n for (const r of ranges) {\n if (c > r[0] && c < r[1]) {\n return a\n }\n }\n\n return [...a, String.fromCharCode(c)]\n}, [])\n\nfunction verifyTiledMap (mapObj) {\n // TODO: add more validation here\n if (!mapObj) {\n throw new Error('Map parameter is required.')\n }\n\n if (mapObj.orientation !== 'orthogonal') {\n throw new Error(`Map is ${mapObj.orientation}. Only orthogonal is currently supported.`)\n }\n if (mapObj.renderorder !== 'right-down') {\n throw new Error(`Map is ${mapObj.renderorder}. Only right-down is currently supported.`)\n }\n}\n\n// decode data in Tiled base64 format\nfunction base64Decode (data) {\n const len = data.length\n const bytes = new Array(len / 4)\n\n // Interpret data as an array of bytes representing little-endian encoded uint32 values.\n for (let i = 0; i < len; i += 4) {\n bytes[i / 4] = (\n data.charCodeAt(i) |\n data.charCodeAt(i + 1) << 8 |\n data.charCodeAt(i + 2) << 16 |\n data.charCodeAt(i + 3) << 24\n ) >>> 0\n }\n\n return bytes\n}\n\nexport default (k) => {\n // this will be imported if needed for compressed layers\n let pako = window.pako\n\n return {\n verifyTiledMap,\n\n async loadTiledMap (mapObj, location = '') {\n // support string=URL\n if (typeof mapObj === 'string') {\n mapObj = await fetch(mapObj).then(r => r.json())\n }\n\n verifyTiledMap(mapObj)\n\n const map = {\n sprites: [],\n levels: [],\n key: {}\n }\n\n for (const tileset of mapObj.tilesets) {\n if (tileset.margin !== 0) {\n console.error(`${tileset.name} uses margins. That is currently unsupported. Skipping.`)\n continue\n }\n if (tileset.spacing !== 0) {\n console.error(`${tileset.name} uses spacing. That is currently unsupported. Skipping.`)\n continue\n }\n\n const sliceX = tileset.imagewidth / tileset.tilewidth\n const sliceY = tileset.imageheight / tileset.tileheight\n if (tileset.image) {\n map.sprites.push(await k.loadSprite(tileset.name, `${location}${tileset.image}`, { sliceX, sliceY }))\n }\n for (let frame = tileset.firstgid; frame < (tileset.firstgid + tileset.tilecount); frame++) {\n map.key[mapsymbols[frame]] = () => [k.sprite(tileset.name, { frame: frame - 1 })]\n }\n }\n\n for (const layer of mapObj.layers) {\n if (layer.type === 'tilelayer' && layer.visible) {\n const { width, height } = layer\n\n if (layer.encoding === 'base64') {\n if (!layer.compression || layer.compression === '') {\n layer.data = base64Decode(atob(layer.data))\n } else {\n if (typeof pako === 'undefined') {\n pako = await import('pako')\n }\n const d = Uint8Array.from(atob(layer.data).split('').map(c => c.charCodeAt(0)))\n layer.data = base64Decode(String.fromCharCode(...pako.inflate(d)))\n }\n }\n\n const mapArray = [...new Array(height)].map(() => (new Array(width + 1).fill(' ')))\n for (let x = 0; x < width; x++) {\n for (let y = 0; y < height; y++) {\n const cell = (y * width) + x\n if (layer.data[cell] !== 0) {\n mapArray[y][x] = mapsymbols[layer.data[cell]]\n }\n }\n }\n map.levels.push(mapArray.map(l => l.join('')))\n }\n }\n\n map.mapObj = mapObj\n\n return map\n }\n 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