Solves puzzle from Prequel Adventure comic (Mar 04, 2014 http://www.prequeladventure.com/2014/03/aggy-extrapolate/ ). Sample output: https://gist.github.com/YellowAfterlife/9369636
import flash.display.Bitmap; | |
import flash.display.BitmapData; | |
import flash.display.Graphics; | |
import flash.display.Sprite; | |
import flash.events.KeyboardEvent; | |
import flash.events.TimerEvent; | |
import flash.geom.Rectangle; | |
import flash.Lib; | |
import flash.text.TextField; | |
import flash.utils.Timer; | |
import openfl.Assets; | |
// | |
class Board { | |
public var pegs:Array<Array<Bool>>; | |
public var x1:Int = -1; | |
public var y1:Int = -1; | |
public var x2:Int = -1; | |
public var y2:Int = -1; | |
public function new() { | |
var o = true, _ = false; | |
pegs = [ | |
[o], | |
[o,o], | |
[o,_,o], | |
[o,o,o,o], | |
[o,o,o,o,o] | |
]; | |
} | |
public function clone(y1:Int, x1:Int, y2:Int, x2:Int):Board { | |
var r = new Board(); | |
for (i in 0 ... pegs.length) { | |
var m = pegs[i], q = r.pegs[i]; | |
for (j in 0 ... m.length) q[j] = m[j]; | |
} | |
r.x1 = x1; r.y1 = y1; | |
r.x2 = x2; r.y2 = y2; | |
return r; | |
} | |
public function solve(m:Array<Board>):Bool { | |
var n:Int = pegs.length, l:Int, r:Board, c:Int = count(); | |
m.push(this); | |
if (c == 1) return true; | |
for (i in 0 ... n) { | |
l = pegs[i].length; | |
for (j in 0 ... l) if (pegs[i][j]) { | |
// up-left: | |
if (i >= 2 && j >= 2 && pegs[i - 1][j - 1] && !pegs[i - 2][j - 2]) { | |
r = clone(i, j, i - 2, j - 2); | |
r.pegs[i][j] = false; | |
r.pegs[i - 1][j - 1] = false; | |
r.pegs[i - 2][j - 2] = true; | |
if (r.solve(m)) return true; | |
} | |
// up-right: | |
if (i >= 2 && j < i - 1 && pegs[i - 1][j] && !pegs[i - 2][j]) { | |
r = clone(i, j, i - 2, j); | |
r.pegs[i][j] = false; | |
r.pegs[i - 1][j] = false; | |
r.pegs[i - 2][j] = true; | |
if (r.solve(m)) return true; | |
} | |
// down-left: | |
if (i + 2 < n && pegs[i + 1][j] && !pegs[i + 2][j]) { | |
r = clone(i, j, i + 2, j); | |
r.pegs[i][j] = false; | |
r.pegs[i + 1][j] = false; | |
r.pegs[i + 2][j] = true; | |
if (r.solve(m)) return true; | |
} | |
// down-right: | |
if (i + 2 < n && pegs[i + 1][j + 1] && !pegs[i + 2][j + 2]) { | |
r = clone(i, j, i + 2, j + 2); | |
r.pegs[i][j] = false; | |
r.pegs[i + 1][j + 1] = false; | |
r.pegs[i + 2][j + 2] = true; | |
if (r.solve(m)) return true; | |
} | |
// left: | |
if (j >= 2 && pegs[i][j - 1] && !pegs[i][j - 2]) { | |
r = clone(i, j, i, j - 2); | |
r.pegs[i][j] = false; | |
r.pegs[i][j - 1] = false; | |
r.pegs[i][j - 2] = true; | |
if (r.solve(m)) return true; | |
} | |
// left: | |
if (j + 2 < l && pegs[i][j + 1] && !pegs[i][j + 2]) { | |
r = clone(i, j, i, j + 2); | |
r.pegs[i][j] = false; | |
r.pegs[i][j + 1] = false; | |
r.pegs[i][j + 2] = true; | |
if (r.solve(m)) return true; | |
} | |
} | |
} | |
m.pop(); | |
return false; | |
} | |
public function toString():String { | |
var r = "", n:Int = pegs.length, m:Array<Bool>; | |
for (i in 0 ... n) { | |
r += StringTools.rpad("\n", " ", n - i); | |
m = pegs[i]; | |
for (j in 0 ... m.length) r += m[j] | |
? ((j == x2 && i == y2) ? "x " : "o ") | |
: ((j == x1 && i == y1) ? "* " : ". "); | |
} | |
return r; | |
} | |
public function count():Int { | |
var r:Int = 0; | |
for (m in pegs) for (v in m) if (v) r++; | |
return r; | |
} | |
} | |
class Main { | |
public function new() { | |
var board = new Board(); | |
var moves:Array<Board> = []; | |
board.solve(moves); | |
for (i in 0 ... moves.length) { | |
Lib.trace("Turn " + (i + 1) + ": " + moves[i]); | |
} | |
} | |
@:keep static function main() new Main(); | |
} |
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cripes man, really, really cool, but how come you came up with that in just half an hour... frack I really need to work on my skills! hahaha