Last active
August 29, 2015 14:14
-
-
Save davidrobles/d3d7955cf8fc5b99ca94 to your computer and use it in GitHub Desktop.
Depth-First Search Game Tree
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <html> | |
| <head> | |
| <title>Tic-Tac-Toe Game Tree</title> | |
| </head> | |
| <body> | |
| <script src="http://www.davidrobles.net/js/visualizing-game-trees-with-d3/underscore.js"></script> | |
| <script src="http://www.davidrobles.net/js/visualizing-game-trees-with-d3/backbone.js"></script> | |
| <script src="http://www.davidrobles.net/js/visualizing-game-trees-with-d3/d3.js"></script> | |
| <script src="http://www.davidrobles.net/js/visualizing-game-trees-with-d3/mauler-0.0.4.js"></script> | |
| <script> | |
| var margin = { top: 50, right: 50, bottom: 50, left: 50 }, | |
| width = 960 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom, | |
| nodeSize = 45; | |
| var depthFirstIteration = function(node) { | |
| if (!node) { | |
| return; | |
| } | |
| var moves = node.game.moves(); | |
| // go to parent node | |
| if (!moves.length || (node.children && node.children.length === moves.length)) { | |
| return depthFirstIteration(node.parent); | |
| } | |
| else { | |
| if (!node.children) { | |
| node.children = []; | |
| } | |
| var child = { | |
| game: node.game.copy().move(node.children.length), | |
| parent: node, | |
| id: nodes.length | |
| }; | |
| node.children.push(child); | |
| return child; | |
| } | |
| }; | |
| var ticTacToe = new ma.games.TicTacToe({ | |
| board: [['O', 'X', ' '], | |
| ['O', 'X', ' '], | |
| [' ', ' ', 'X']] | |
| }); | |
| var svgView = new ma.views.TicTacToeSVG({ | |
| model: ticTacToe, | |
| sideLength: nodeSize | |
| }); | |
| var diagonal = d3.svg.diagonal() | |
| .projection(function(d) { return [d.x, d.y]; }); | |
| var svg = d3.select("body") | |
| .append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .attr("style", "background-color: #eeeeee") | |
| .append("g") | |
| .attr("transform", "translate(" + margin.left + ", " + margin.top + ")"); | |
| var tree = d3.layout.tree().size([width, height]); | |
| tree.separation(function(a, b) { | |
| return 2; | |
| }); | |
| var root = { game: ticTacToe, id: 0 }, | |
| nodes = tree(root); | |
| root.px = root.x; | |
| root.py = root.y; | |
| var curNode = root; | |
| var update = function() { | |
| if (!curNode) { | |
| return clearInterval(timer); | |
| } | |
| nodes.push(curNode); | |
| // Enter nodes | |
| svg.selectAll(".node-group") | |
| .data(tree.nodes(root), function(d) { | |
| return d.id; | |
| }) | |
| .enter() | |
| .append("g") | |
| .attr("class", "node-group") | |
| .attr("transform", function(d) { | |
| svgView.model = d.game; | |
| svgView.svg = d3.select(this); | |
| svgView.render(); | |
| if (!d.parent) { | |
| return "translate(" + ((width / 2) - (nodeSize / 2)) + ", " + (0 - (nodeSize / 2)) + ")"; | |
| } | |
| return "translate(" + (d.parent.px - (nodeSize / 2)) + ", " + (d.parent.py - (nodeSize / 2)) + ")"; | |
| }); | |
| // Enter links | |
| svg.selectAll(".link") | |
| .data(tree.links(nodes), function(d) { | |
| return d.source.id + "-" + d.target.id; | |
| }) | |
| .enter() | |
| .insert("path", ".node-group") | |
| .attr("class", "link") | |
| .attr("d", function(d) { | |
| var o = { | |
| x: d.source.px, | |
| y: d.source.py | |
| }; | |
| return diagonal({ | |
| source: o, | |
| target: o | |
| }); | |
| }) | |
| .attr("fill", "none") | |
| .attr("stroke", "#666666") | |
| .attr("stroke-width", 2); | |
| var t = svg.transition().duration(250); | |
| // Update links | |
| t.selectAll(".link") | |
| .attr("d", diagonal); | |
| // Update nodes | |
| t.selectAll(".node-group") | |
| .attr("transform", function(d) { | |
| d.px = d.x; | |
| d.py = d.y; | |
| return "translate(" + (d.x - (nodeSize / 2)) + ", " + (d.y - (nodeSize / 2)) + ")" | |
| }); | |
| curNode = depthFirstIteration(curNode); | |
| }; | |
| var duration = 250, | |
| timer = setInterval(update, duration); | |
| </script> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment