Just an [After Dark](https://en.wikipedia.org/wiki/After_Dark_(software)-style sliding puzzle.
Last active
February 1, 2017 19:01
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Sliding puzzle
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| height: 600 |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| div { | |
| background: black url('neon.jpg'); | |
| position: absolute; | |
| border: 0.5px solid black; | |
| box-sizing: border-box; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var rows = 10, | |
| columns = 16, | |
| size = 60, | |
| holeIndex = Math.floor(Math.random() * rows * columns), | |
| last; | |
| var tiles = d3.select("body").selectAll("div") | |
| .data(d3.range(rows * columns)) | |
| .enter() | |
| .append("div") | |
| .style("background-position", getPosition) | |
| .style("width", size + "px") | |
| .style("height", size + "px") | |
| .call(move) | |
| .nodes(); | |
| tiles[holeIndex].remove(); | |
| tiles[holeIndex] = null; | |
| swap(); | |
| function swap(){ | |
| var destination = d3.shuffle(getNeighbors(holeIndex)).filter(function(d){ | |
| return tiles[d] !== last; | |
| })[0]; | |
| last = tiles[destination]; | |
| tiles[destination] = null; | |
| tiles[holeIndex] = last; | |
| d3.select(last).datum(holeIndex) | |
| .transition() | |
| .duration(150) | |
| .call(move) | |
| .on("end", swap); | |
| holeIndex = destination; | |
| } | |
| function getPosition(d){ | |
| return "-" + getLeft(d) + " -" + getTop(d); | |
| } | |
| function getNeighbors(d){ | |
| var neighbors = []; | |
| var row = Math.floor(d / columns), | |
| column = d % columns; | |
| if (row > 0) { | |
| neighbors.push(d - columns); | |
| } | |
| if (row < rows - 1) { | |
| neighbors.push(d + columns); | |
| } | |
| if (column > 0) { | |
| neighbors.push(d - 1); | |
| } | |
| if (column < columns - 1) { | |
| neighbors.push(d + 1); | |
| } | |
| return neighbors; | |
| } | |
| function move(sel) { | |
| sel.style("top", getTop) | |
| .style("left", getLeft); | |
| } | |
| function getTop(d){ | |
| return (Math.floor(d / columns) * size) + "px"; | |
| } | |
| function getLeft(d){ | |
| return (d % columns * size) + "px"; | |
| } | |
| </script> |
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