Nothing special. Only a very minimalistic tiled map renderer.
Last active
August 29, 2015 14:03
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minimalistic tiled html5 example
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| var PARSER = { | |
| JSON = { | |
| } | |
| }; |
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| <html> | |
| <head> | |
| <script src="http://code.jquery.com/jquery-1.8.1.min.js"></script> | |
| <script src="jsonparser.js"></script> | |
| <script type="application/javascript"> | |
| var ctx = undefined; | |
| var map = undefined; | |
| function loadMap(url) { | |
| loadJSONMap("test.json", function(json_map) { | |
| map = json_map; | |
| if (!map) | |
| return; | |
| var num_of_loaded = 0 | |
| for (var i = 0; i < map.tilesets.length; ++i) { | |
| map.tilesets[i].img = new Image(); | |
| map.tilesets[i].img.onload = function() { | |
| if (++num_of_loaded == map.tilesets.length) { | |
| init(); | |
| } | |
| } | |
| map.tilesets[i].img.src = map.tilesets[i].image; | |
| } | |
| }); | |
| } | |
| function load() { | |
| loadMap("test.json"); | |
| } | |
| function renderCell(x, y, id) { | |
| if (id == 0) | |
| return; // Skip empty cells | |
| var set; | |
| // Search right tileset image | |
| for (var i = 0; i < map.tilesets.length; ++i) { | |
| if (map.tilesets[i].firstgid <= id) | |
| set = map.tilesets[i]; | |
| } | |
| var tile_id = id - set.firstgid; | |
| var set_width = set.imagewidth / set.tilewidth; | |
| var tile_x = tile_id % set_width | |
| var tile_y = Math.floor(tile_id / set_width); | |
| ctx.drawImage( | |
| set.img, tile_x * set.tilewidth, tile_y * set.tileheight, | |
| set.tilewidth, set.tileheight, | |
| x * set.tilewidth, y * set.tileheight, | |
| set.tilewidth, set.tileheight | |
| ); | |
| } | |
| function init() { | |
| ctx = document.getElementById("canvas").getContext("2d"); | |
| for (var layer = 0; layer < map.layers.length; ++layer) { | |
| for (var cell = 0; cell < map.layers[layer].data.length; ++cell) { | |
| var x = cell % map.layers[layer].width; | |
| var y = Math.floor((cell - x) / map.layers[layer].height); | |
| renderCell(x, y, map.layers[layer].data[cell]); | |
| } | |
| } | |
| } | |
| </script> | |
| <style type="text/css"> | |
| canvas { border: 1px solid black; } | |
| </style> | |
| </head> | |
| <body onload="load();"> | |
| <canvas id="canvas" width="1000" height="1000"></canvas> | |
| </body> | |
| </html> |
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| function loadJSONMap(url, callback) { | |
| $.getJSON(url, function(json) { | |
| var map = json; | |
| var num_of_loaded = 0 | |
| // Random checks if it is a valid tiled generated map | |
| if (!(map.layers && map.orientation && map.tilesets)) | |
| callback(null); | |
| for (var i = 0; i < map.tilesets.length; ++i) { | |
| map.tilesets[i].img = new Image(); | |
| map.tilesets[i].img.onload = function() { | |
| if (++num_of_loaded == map.tilesets.length) { | |
| init(); | |
| } | |
| } | |
| map.tilesets[i].img.src = map.tilesets[i].image; | |
| } | |
| callback(map); | |
| }); | |
| } |
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| { "height":10, | |
| "layers":[ | |
| { | |
| "data":[29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29], | |
| "height":10, | |
| "name":"ground", | |
| "opacity":1, | |
| "type":"tilelayer", | |
| "visible":true, | |
| "width":10, | |
| "x":0, | |
| "y":0 | |
| }, | |
| { | |
| "data":[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 14, 3, 0, 0, 0, 0, 0, 0, 0, 12, 0, 10, 0, 0, 0, 0, 0, 0, 1, 5, 8, 6, 9, 0, 0, 0, 0, 0, 0, 0, 0, 10, 5, 9, 0, 0, 0, 0, 7, 8, 9, 13, 3, 12, 0, 0, 0, 0, 10, 11, 12, 0, 13, 15, 0, 0, 0, 0, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], | |
| "height":10, | |
| "name":"grass", | |
| "opacity":1, | |
| "type":"tilelayer", | |
| "visible":true, | |
| "width":10, | |
| "x":0, | |
| "y":0 | |
| }], | |
| "orientation":"orthogonal", | |
| "properties": | |
| { | |
| }, | |
| "tileheight":32, | |
| "tilesets":[ | |
| { | |
| "firstgid":1, | |
| "image":"grass.png", | |
| "imageheight":192, | |
| "imagewidth":96, | |
| "margin":0, | |
| "name":"grass", | |
| "properties": | |
| { | |
| }, | |
| "spacing":0, | |
| "tileheight":32, | |
| "tilewidth":32 | |
| }, | |
| { | |
| "firstgid":19, | |
| "image":"dirt.png", | |
| "imageheight":192, | |
| "imagewidth":96, | |
| "margin":0, | |
| "name":"dirt", | |
| "properties": | |
| { | |
| }, | |
| "spacing":0, | |
| "tileheight":32, | |
| "tilewidth":32 | |
| }], | |
| "tilewidth":32, | |
| "version":1, | |
| "width":10 | |
| } |
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