454 行
16 KiB
JavaScript
454 行
16 KiB
JavaScript
// Copyright 2011 David Galles, University of San Francisco. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other materials
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// provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// The views and conclusions contained in the software and documentation are those of the
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// authors and should not be interpreted as representing official policies, either expressed
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// or implied, of the University of San Francisco
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function Queens(am, w, h)
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{
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this.init(am, w, h);
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}
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Queens.prototype = new Recursive();
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Queens.prototype.constructor = Queens;
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Queens.superclass = Recursive.prototype;
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Queens.CALC_QUEENS_ACTIVATION_FIELDS = [" size ", " board "];
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Queens.QUEENS_ACTIVATION_FIELDS = [" board ", " current ", " size ", " i ", " done "];
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Queens.CHECK_ACTIVATION_FIELDS = [" board ", " current ", " i "];
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Queens.CODE = [["def ","calcQueens(size)",":"],
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[" board = ", "[-1] * size"],
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[ " return ","queens(board, 0, size)"],
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[" "],
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["def ","queens(board, current, size)",":"],
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[" if ", "(current == size):"],
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[" return true"],
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[" else:"],
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[" for i in range(size):"],
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[" board[current] = i"],
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[" if (","noConflicts(board, current)",":"],
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[" done"," = ", "queens(board, current + 1, size)"],
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[" if (done):"],
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[" return true"],
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[" return false"],
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[" "],
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["def ","noConflicts(board, current)",":"],
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[" for i in range(current):"],
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[" if ","(board[i] == board[current])",":"],
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[" return false"],
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[" if ","(current - i == abs(board[current] = board[i]))",":"],
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[" return false"],
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[" return true"]];
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Queens.RECURSIVE_DELTA_Y_CALC_QUEEN = Queens.CALC_QUEENS_ACTIVATION_FIELDS.length * Recursive.ACTIVATION_RECORD_HEIGHT;
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Queens.RECURSIVE_DELTA_Y_QUEEN = Queens.QUEENS_ACTIVATION_FIELDS.length * Recursive.ACTIVATION_RECORD_HEIGHT;
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Queens.RECURSIVE_DELTA_Y_CHECK = Queens.CHECK_ACTIVATION_FIELDS.length * Recursive.ACTIVATION_RECORD_HEIGHT;
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Queens.ACTIVATION_RECORT_START_X = 450;
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Queens.ACTIVATION_RECORT_START_Y = 20;
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Queens.INTERNAL_BOARD_START_X = 600;
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Queens.INTERNAL_BOARD_START_Y = 100;
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Queens.INTERNAL_BOARD_WIDTH = 20;
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Queens.INTERNAL_BOARD_HEIGHT = 20;
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Queens.LOGICAL_BOARD_START_X = Queens.INTERNAL_BOARD_START_X;
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Queens.LOGICAL_BOARD_START_Y = Queens.INTERNAL_BOARD_START_Y + Queens.INTERNAL_BOARD_HEIGHT * 1.5;
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Queens.LOGICAL_BOARD_WIDTH = Queens.INTERNAL_BOARD_WIDTH;
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Queens.LOGICAL_BOARD_HEIGHT = Queens.INTERNAL_BOARD_HEIGHT;
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Queens.ACTIVATION_RECORD_SPACING = 400;
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Queens.INDEX_COLOR = "#0000FF";
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Queens.prototype.init = function(am, w, h)
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{
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Queens.superclass.init.call(this, am, w, h);
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this.nextIndex = 0;
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this.addControls();
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this.code = Queens.CODE;
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this.addCodeToCanvas(this.code);
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this.animationManager.StartNewAnimation(this.commands);
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this.animationManager.skipForward();
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this.animationManager.clearHistory();
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this.initialIndex = this.nextIndex;
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this.oldIDs = [];
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this.commands = [];
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}
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Queens.prototype.addControls = function()
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{
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this.controls = [];
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addLabelToAlgorithmBar("Board size: (1-8)");
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this.sizeField = addControlToAlgorithmBar("Text", "");
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this.sizeField.onkeydown = this.returnSubmit(this.sizeField, this.queensCallback.bind(this), 2, true);
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this.controls.push(this.sizeField);
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this.queensButton = addControlToAlgorithmBar("Button", "Queens");
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this.queensButton.onclick = this.queensCallback.bind(this);
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this.controls.push(this.queensButton);
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}
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Queens.prototype.queensCallback = function(event)
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{
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var queensValue;
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if (this.sizeField.value != "")
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{
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var queenSize = parseInt(this.sizeField.value);
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queenSize = Math.min(queenSize, 8);
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this.sizeField.value = String(queenSize);
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this.implementAction(this.doQueens.bind(this),queenSize);
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}
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}
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Queens.prototype.doQueens = function(size)
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{
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this.commands = [];
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this.clearOldIDs();
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this.boardData = new Array(size);
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this.boardInternalID = new Array(size);
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this.boardLogicalID = new Array(size);
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this.boardInternalIndexID = new Array(size);
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this.currentY = Queens.ACTIVATION_RECORT_START_Y;
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this.currentX = Queens.ACTIVATION_RECORT_START_X;
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this.activationLeft = true;
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this.cmd("SetForegroundColor", this.codeID[0][1], Recursive.CODE_HIGHLIGHT_COLOR);
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var activationRec = this.createActivation("calcQueens", Queens.CALC_QUEENS_ACTIVATION_FIELDS, this.currentX, this.currentY, this.activationLeft);
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this.currentY += Queens.RECURSIVE_DELTA_Y_CALC_QUEEN;
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this.cmd("SetText", activationRec.fieldIDs[0], size);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[0][1], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[1][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetForegroundColor", this.codeID[1][1], Recursive.CODE_HIGHLIGHT_COLOR);
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for (var i = 0; i < size; i++)
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{
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this.boardInternalID[i] = this.nextIndex++;
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this.oldIDs.push(this.boardInternalID[i])
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this.cmd("CreateRectangle", this.boardInternalID[i],
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"-1",
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Queens.INTERNAL_BOARD_WIDTH,
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Queens.INTERNAL_BOARD_HEIGHT,
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Queens.INTERNAL_BOARD_START_X + i * Queens.INTERNAL_BOARD_WIDTH,
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Queens.INTERNAL_BOARD_START_Y);
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this.boardInternalIndexID[i] = this.nextIndex++;
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this.oldIDs.push(this.boardInternalIndexID[i]);
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this.cmd("CreateLabel", this.boardInternalIndexID[i], i,Queens.INTERNAL_BOARD_START_X + i * Queens.INTERNAL_BOARD_WIDTH,
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Queens.INTERNAL_BOARD_START_Y - Queens.INTERNAL_BOARD_HEIGHT);
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this.cmd("SetForegroundColor", this.boardInternalIndexID[i], Queens.INDEX_COLOR);
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this.boardLogicalID[i] = new Array(size);
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for (var j = 0; j < size; j++)
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{
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this.boardLogicalID[i][j] = this.nextIndex++;
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this.oldIDs.push(this.boardLogicalID[i][j]);
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this.cmd("CreateRectangle", this.boardLogicalID[i][j],
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"",
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Queens.LOGICAL_BOARD_WIDTH,
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Queens.LOGICAL_BOARD_HEIGHT,
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Queens.LOGICAL_BOARD_START_X + j * Queens.LOGICAL_BOARD_WIDTH,
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Queens.LOGICAL_BOARD_START_Y + i * Queens.LOGICAL_BOARD_HEIGHT);
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}
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}
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this.cmd("Connect", activationRec.fieldIDs[1], this.boardInternalID[0]);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[1][0], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[1][1], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[1][1], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[2][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[2][1], Recursive.CODE_STANDARD_COLOR);
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board = new Array(size);
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this.queens(board, 0, size);
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this.cmd("Step");
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this.cmd("Delete", this.nextIndex);
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this.deleteActivation(activationRec);
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return this.commands;
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}
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Queens.prototype.queens = function(board, current, size)
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{
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var oldX = this.currentX;
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var oldY = this.currentY;
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var oldLeft = this.activationLeft;
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var activationRec = this.createActivation("queens", Queens.QUEENS_ACTIVATION_FIELDS, this.currentX, this.currentY, this.activationLeft);
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this.cmd("SetForegroundColor", this.codeID[4][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetText", activationRec.fieldIDs[1], current);
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this.cmd("SetText", activationRec.fieldIDs[2], size);
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if (this.activationLeft)
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{
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this.cmd("Connect", activationRec.fieldIDs[0], this.boardInternalID[0]);
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}
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else
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{
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this.cmd("Connect", activationRec.fieldIDs[0], this.boardInternalID[size-1]);
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}
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[4][1], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[5][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[5][1], Recursive.CODE_STANDARD_COLOR);
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this.currentY += Queens.RECURSIVE_DELTA_Y_QUEEN;
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if (this.currentY + Queens.RECURSIVE_DELTA_Y_QUEEN > this.canvasHeight)
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{
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this.currentY = Queens.ACTIVATION_RECORT_START_Y;
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this.currentX += Queens.ACTIVATION_RECORD_SPACING;
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this.activationLeft = false;
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}
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if (current == size)
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{
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this.cmd("SetForegroundColor", this.codeID[6][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[6][0], Recursive.CODE_STANDARD_COLOR);
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this.deleteActivation(activationRec);
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this.currentX = oldX;
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this.currentY = oldY;
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this.activationLeft = oldLeft;
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this.cmd("CreateLabel", this.nextIndex, "Return Value = true", this.currentX, this.currentY);
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this.cmd("SetForegroundColor", this.nextIndex, Recursive.CODE_HIGHLIGHT_COLOR);
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return true;
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}
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var i;
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for (i = 0; i < size; i++)
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{
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this.cmd("SetTextColor", this.codeID[8][0], Recursive.CODE_HIGHLIGHT_COLOR);
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board[current] = i;
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this.cmd("SetText", activationRec.fieldIDs[3], i);
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this.cmd("Step");
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this.cmd("SetTextColor", this.codeID[8][0], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetTextColor", this.codeID[9][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetText", this.boardLogicalID[i][current], "Q");
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this.cmd("SetText", this.boardInternalID[current], i);
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this.cmd("Step");
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this.cmd("SetTextColor", this.codeID[9][0], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetTextColor", this.codeID[10][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetTextColor", this.codeID[10][1], Recursive.CODE_STANDARD_COLOR);
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var moveLegal = this.legal(board,current);
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this.cmd("SetTextColor", this.codeID[10][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetTextColor", this.codeID[10][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("Delete",this.nextIndex);
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this.cmd("SetTextColor", this.codeID[10][0], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetTextColor", this.codeID[10][1], Recursive.CODE_STANDARD_COLOR);
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if (moveLegal)
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{
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this.cmd("SetTextColor", this.codeID[11][2], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetTextColor", this.codeID[11][2], Recursive.CODE_STANDARD_COLOR);
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var done = this.queens(board, current+1, size);
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this.cmd("SetTextColor", this.codeID[11][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetTextColor", this.codeID[11][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetTextColor", this.codeID[11][2], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetText", activationRec.fieldIDs[4], done);
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this.cmd("Step");
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this.cmd("Delete", this.nextIndex);
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this.cmd("SetTextColor", this.codeID[11][0], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetTextColor", this.codeID[11][1], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetTextColor", this.codeID[11][2], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetTextColor", this.codeID[12][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetTextColor", this.codeID[12][0], Recursive.CODE_STANDARD_COLOR);
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if (done)
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{
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this.cmd("SetTextColor", this.codeID[13][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetTextColor", this.codeID[13][0], Recursive.CODE_STANDARD_COLOR);
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this.deleteActivation(activationRec);
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this.currentX = oldX;
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this.currentY = oldY;
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this.activationLeft = oldLeft;
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this.cmd("CreateLabel", this.nextIndex, "Return Value = true", this.currentX, this.currentY);
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this.cmd("SetForegroundColor", this.nextIndex, Recursive.CODE_HIGHLIGHT_COLOR);
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return true;
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}
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}
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this.cmd("SetText", this.boardLogicalID[i][current], "");
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}
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this.cmd("SetTextColor", this.codeID[14][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetTextColor", this.codeID[14][0], Recursive.CODE_STANDARD_COLOR);
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this.deleteActivation(activationRec);
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this.currentX = oldX;
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this.currentY = oldY;
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this.activationLeft = oldLeft;
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this.cmd("CreateLabel", this.nextIndex, "Return Value = false", this.currentX, this.currentY);
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this.cmd("SetForegroundColor", this.nextIndex, Recursive.CODE_HIGHLIGHT_COLOR);
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return false;
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}
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Queens.prototype.legal = function(board, current)
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{
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var activationRec = this.createActivation("noConflicts", Queens.CHECK_ACTIVATION_FIELDS, this.currentX, this.currentY, this.activationLeft);
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this.cmd("SetText", activationRec.fieldIDs[1], current);
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if (this.activationLeft)
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{
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this.cmd("Connect", activationRec.fieldIDs[0], this.boardInternalID[0]);
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}
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else
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{
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this.cmd("Connect", activationRec.fieldIDs[0], this.boardInternalID[this.boardInternalID.length - 1]);
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}
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this.cmd("SetForegroundColor", this.codeID[16][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[16][1], Recursive.CODE_STANDARD_COLOR);
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var i;
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var OK = true;
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if (current == 0)
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{
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this.cmd("SetForegroundColor", this.codeID[17][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step")
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this.cmd("SetForegroundColor", this.codeID[17][0], Recursive.CODE_STANDARD_COLOR);
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}
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for (i = 0; i < current; i++)
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{
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this.cmd("SetText", activationRec.fieldIDs[2], i);
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this.cmd("SetTextColor", activationRec.fieldIDs[2], Recursive.CODE_HIGHLIGHT_COLOR)
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this.cmd("SetForegroundColor", this.codeID[17][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step")
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this.cmd("SetForegroundColor", this.codeID[17][0], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetTextColor", activationRec.fieldIDs[2], Recursive.CODE_STANDARD_COLOR)
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this.cmd("SetForegroundColor", this.codeID[18][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetTextColor", this.boardLogicalID[board[current]][current], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetTextColor", this.boardLogicalID[board[i]][i], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetTextColor", this.boardLogicalID[board[current]][current], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetTextColor", this.boardLogicalID[board[i]][i], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[18][1], Recursive.CODE_STANDARD_COLOR);
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if (board[i] == board[current])
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{
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this.cmd("SetForegroundColor", this.codeID[19][0], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetForegroundColor", this.codeID[19][0], Recursive.CODE_STANDARD_COLOR);
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OK = false;
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break;
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}
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this.cmd("SetTextColor", this.boardLogicalID[board[current]][current], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetTextColor", this.boardLogicalID[board[i]][i], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("SetForegroundColor", this.codeID[20][1], Recursive.CODE_HIGHLIGHT_COLOR);
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this.cmd("Step");
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this.cmd("SetTextColor", this.boardLogicalID[board[current]][current], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetTextColor", this.boardLogicalID[board[i]][i], Recursive.CODE_STANDARD_COLOR);
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this.cmd("SetForegroundColor", this.codeID[20][1], Recursive.CODE_STANDARD_COLOR);
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if (current - i == Math.abs(board[current] - board[i]))
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{
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this.cmd("SetForegroundColor", this.codeID[21][0], Recursive.CODE_HIGHLIGHT_COLOR);
|
|
this.cmd("Step");
|
|
this.cmd("SetForegroundColor", this.codeID[21][0], Recursive.CODE_STANDARD_COLOR);
|
|
|
|
OK = false;
|
|
break;
|
|
}
|
|
|
|
}
|
|
if (OK)
|
|
{
|
|
this.cmd("SetForegroundColor", this.codeID[22][0], Recursive.CODE_HIGHLIGHT_COLOR);
|
|
this.cmd("Step");
|
|
this.cmd("SetForegroundColor", this.codeID[22][0], Recursive.CODE_STANDARD_COLOR);
|
|
}
|
|
this.cmd("CreateLabel", this.nextIndex, "Return Value = " + String(OK), this.currentX, this.currentY);
|
|
this.cmd("SetForegroundColor", this.nextIndex, Recursive.CODE_HIGHLIGHT_COLOR);
|
|
this.deleteActivation(activationRec);
|
|
|
|
return OK;
|
|
}
|
|
|
|
var currentAlg;
|
|
|
|
function init()
|
|
{
|
|
var animManag = initCanvas();
|
|
currentAlg = new Queens(animManag, canvas.width, canvas.height);
|
|
}
|
|
|
|
|
|
|