From e94e1e29cedff001c1813e597d249c2b8dd79e13 Mon Sep 17 00:00:00 2001 From: sk89q Date: Sat, 22 Jan 2011 15:38:38 -0800 Subject: [PATCH] Added example script for generating mazes. --- craftscripts/maze.js | 132 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 craftscripts/maze.js diff --git a/craftscripts/maze.js b/craftscripts/maze.js new file mode 100644 index 000000000..329759e18 --- /dev/null +++ b/craftscripts/maze.js @@ -0,0 +1,132 @@ +// $Id$ +/* + * Maze generator CraftScript for WorldEdit + * Copyright (C) 2010, 2011 sk89q + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . +*/ + +importPackage(Packages.com.sk89q.worldedit); +importPackage(Packages.com.sk89q.worldedit.blocks); + +context.checkArgs(1, -1, " [width] [height]"); + +var sess = context.remember(); + +// This may throw an exception that is caught by the script processor +var block = context.getBlock(argv[1]); +var w = argv.length > 2 ? parseInt(argv[2]) : 5; +var h = argv.length > 3 ? parseInt(argv[3]) : 5; + +function id(x, y) { + return y * (w + 1) + x; +} + +function $x(i) { + return i % (w + 1); +} + +function $y(i) { + return Math.floor(i / (w + 1)); +} + +function shuffle(arr) { + var i = arr.length; + if (i == 0) return false; + while (--i) { + var j = Math.floor(Math.random() * (i + 1)); + var tempi = arr[i]; + var tempj = arr[j]; + arr[i] = tempj; + arr[j] = tempi; + } +} + +var stack = []; +var visited = {}; +var noWallLeft = new Array(w * h); +var noWallAbove = new Array(w * h); +var current = 0; + +stack.push(id(0, 0)) + +while (stack.length > 0) { + var cell = stack.pop(); + var x = $x(cell), y = $y(cell); + visited[cell] = true; + + var neighbors = [] + + if (x > 0) neighbors.push(id(x - 1, y)); + if (x < w - 1) neighbors.push(id(x + 1, y)); + if (y > 0) neighbors.push(id(x, y - 1)); + if (y < h - 1) neighbors.push(id(x, y + 1)); + + shuffle(neighbors); + + while (neighbors.length > 0) { + var neighbor = neighbors.pop(); + var nx = $x(neighbor), ny = $y(neighbor); + + if (visited[neighbor] != true) { + stack.push(cell); + + if (y == ny) { + if (nx < x) { + noWallLeft[cell] = true; + } else { + noWallLeft[neighbor] = true; + } + } else { + if (ny < y) { + noWallAbove[cell] = true; + } else { + noWallAbove[neighbor] = true; + } + } + + stack.push(neighbor); + break; + } + } +} + +/*for (var y = -1; y < h; y++) { + var line = ""; + for (var x = 0; x <= w; x++) { + var cell = id(x, y) + var l = y >= 0 ? (noWallLeft[cell] ? "_" : "|") : "_"; + var b = x < w ? (noWallAbove[id(x, y + 1)] ? " " : "_") : ""; + line += l + b; + } + context.print(line); +}*/ + +var origin = player.getBlockIn(); + +for (var y = 0; y <= h; y++) { + for (var x = 0; x <= w; x++) { + var cell = id(x, y) + if (!noWallLeft[cell] && y < h) { + sess.setBlock(origin.add(x * 2 - 1, 0, y * 2), block); + sess.setBlock(origin.add(x * 2 - 1, 1, y * 2), block); + } + if (!noWallAbove[cell] && x < w) { + sess.setBlock(origin.add(x * 2, 0, y * 2 - 1), block); + sess.setBlock(origin.add(x * 2, 1, y * 2 - 1), block); + } + sess.setBlock(origin.add(x * 2 - 1, 0, y * 2 - 1), block); + sess.setBlock(origin.add(x * 2 - 1, 1, y * 2 - 1), block); + } +} \ No newline at end of file