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package gr.auth.ee.dsproject.pacman;
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import gr.auth.ee.dsproject.node.Node;
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/**
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* <p>
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* Title: DataStructures2011
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* </p>
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*
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* <p>
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* Description: Data Structures project: year 2011-2012
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* </p>
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*
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* <p>
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* Copyright: Copyright (c) 2011
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* </p>
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*
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* <p>
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* Company: A.U.Th.
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* </p>
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*
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* @author Michael T. Tsapanos
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* @version 1.0
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*/
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public class Creature implements gr.auth.ee.dsproject.pacman.AbstractCreature
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{
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public String getName ()
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{
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return "Mine";
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}
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private int step = 1;
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private boolean amPrey;
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public Creature (boolean isPrey)
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{
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amPrey = isPrey;
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}
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public int calculateNextPacmanPosition (Room[][] Maze, int[] currPosition)
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{
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// TODO Fill This
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return 0;
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}
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void createSubTreePacman (int depth, Node parent, Room[][] Maze, int[] currPacmanPosition)
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{
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// TODO Fill This
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}
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void createSubTreeGhosts (int depth, Node parent, Room[][] Maze, int[][] currGhostsPosition)
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{
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// TODO Fill This
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}
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public int[] getPacPos (Room[][] Maze)
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{
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int[] pacmanPos = new int[2];
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for (int i = 0; i < PacmanUtilities.numberOfRows; i++) {
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for (int j = 0; j < PacmanUtilities.numberOfColumns; j++) {
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if (Maze[i][j].isPacman()) {
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pacmanPos[0] = i;
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pacmanPos[1] = j;
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return pacmanPos;
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}
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}
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}
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return pacmanPos;
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}
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public boolean[] comAvPos (Room[][] Maze, int[][] currentPos, int[] moves, int currentGhost)
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{
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boolean[] availablePositions = { true, true, true, true };
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int[][] newPos = new int[4][2];
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for (int i = 0; i < 4; i++) {
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if (Maze[currentPos[currentGhost][0]][currentPos[currentGhost][1]].walls[i] == 0) {
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availablePositions[i] = false;
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continue;
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}
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if (PacmanUtilities.flagColision(Maze, currentPos[currentGhost], i)) {
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availablePositions[i] = false;
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}
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else if (currentGhost == 0)
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continue;
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else {
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switch (i) {
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case Room.WEST:
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newPos[currentGhost][0] = currentPos[currentGhost][0];
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newPos[currentGhost][1] = currentPos[currentGhost][1] - 1;
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break;
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case Room.SOUTH:
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newPos[currentGhost][0] = currentPos[currentGhost][0] + 1;
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newPos[currentGhost][1] = currentPos[currentGhost][1];
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break;
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case Room.EAST:
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newPos[currentGhost][0] = currentPos[currentGhost][0];
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newPos[currentGhost][1] = currentPos[currentGhost][1] + 1;
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break;
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case Room.NORTH:
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newPos[currentGhost][0] = currentPos[currentGhost][0] - 1;
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newPos[currentGhost][1] = currentPos[currentGhost][1];
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}
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for (int j = (currentGhost - 1); j > -1; j--) {
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switch (moves[j]) {
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case Room.WEST:
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newPos[j][0] = currentPos[j][0];
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newPos[j][1] = currentPos[j][1] - 1;
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break;
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case Room.SOUTH:
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newPos[j][0] = currentPos[j][0] + 1;
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newPos[j][1] = currentPos[j][1];
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break;
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case Room.EAST:
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newPos[j][0] = currentPos[j][0];
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newPos[j][1] = currentPos[j][1] + 1;
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break;
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case Room.NORTH:
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newPos[j][0] = currentPos[j][0] - 1;
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newPos[j][1] = currentPos[j][1];
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// break;
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}
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if ((newPos[currentGhost][0] == newPos[j][0]) && (newPos[currentGhost][1] == newPos[j][1])) {
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availablePositions[i] = false;
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continue;
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}
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if ((newPos[currentGhost][0] == currentPos[j][0]) && (newPos[currentGhost][1] == currentPos[j][1]) && (newPos[j][0] == currentPos[currentGhost][0])
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&& (newPos[j][1] == currentPos[currentGhost][1])) {
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availablePositions[i] = false;
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}
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}
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}
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}
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return availablePositions;
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}
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public int comBestPos (boolean[] availablePositions, int[] pacmanPosition, int[] currentPos)
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{
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int[] newVerticalDifference = new int[2];
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for (int i = 0; i < 2; i++)
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newVerticalDifference[i] = currentPos[i] - pacmanPosition[i];
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int[] distanceSquared = new int[4];
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for (int i = 0; i < 4; i++) {
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if (availablePositions[i] == true) {
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switch (i) {
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case Room.WEST:
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newVerticalDifference[1]--;
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break;
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case Room.SOUTH:
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newVerticalDifference[0]++;
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break;
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case Room.EAST:
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newVerticalDifference[1]++;
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break;
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case Room.NORTH:
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newVerticalDifference[0]--;
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break;
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}
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distanceSquared[i] = newVerticalDifference[0] * newVerticalDifference[0] + newVerticalDifference[1] * newVerticalDifference[1];
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} else
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distanceSquared[i] = PacmanUtilities.numberOfRows * PacmanUtilities.numberOfRows + PacmanUtilities.numberOfColumns * PacmanUtilities.numberOfColumns + 1;
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}
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int minDistance = distanceSquared[0];
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int minPosition = 0;
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for (int i = 1; i < 4; i++) {
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if (minDistance > distanceSquared[i]) {
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minDistance = distanceSquared[i];
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minPosition = i;
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}
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}
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return minPosition;
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}
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public int[] calculateNextGhostPosition (Room[][] Maze, int[][] currentPos)
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{
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int[] moves = new int[PacmanUtilities.numberOfGhosts];
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int[] pacmanPosition = new int[2];
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pacmanPosition = getPacPos(Maze);
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for (int i = 0; i < PacmanUtilities.numberOfGhosts; i++) {
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moves[i] = comBestPos(comAvPos(Maze, currentPos, moves, i), pacmanPosition, currentPos[i]);
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}
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return moves;
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}
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public boolean[] checkCollision (int[] moves, int[][] currentPos)
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{
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boolean[] collision = new boolean[PacmanUtilities.numberOfGhosts];
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int[][] newPos = new int[4][2];
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for (int i = 0; i < moves.length; i++) {
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if (moves[i] == 0) {
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if (currentPos[i][1] > 0) {
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newPos[i][0] = currentPos[i][0];
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newPos[i][1] = currentPos[i][1] - 1;
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} else {
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newPos[i][0] = currentPos[i][0];
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newPos[i][1] = PacmanUtilities.numberOfColumns - 1;
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}
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} else if (moves[i] == 1) {
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if (currentPos[i][0] < PacmanUtilities.numberOfRows - 1) {
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newPos[i][0] = currentPos[i][0] + 1;
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newPos[i][1] = currentPos[i][1];
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} else {
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newPos[i][0] = 0;
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newPos[i][1] = currentPos[i][1];
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}
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} else if (moves[i] == 2) {
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if (currentPos[i][1] < PacmanUtilities.numberOfColumns - 1) {
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newPos[i][0] = currentPos[i][0];
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newPos[i][1] = currentPos[i][1] + 1;
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} else {
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newPos[i][0] = currentPos[i][0];
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newPos[i][1] = 0;
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}
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} else {
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if (currentPos[i][0] > 0) {
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newPos[i][0] = currentPos[i][0] - 1;
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newPos[i][1] = currentPos[i][1];
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} else {
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newPos[i][0] = PacmanUtilities.numberOfRows - 1;
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newPos[i][1] = currentPos[i][1];
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}
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}
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collision[i] = false;
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}
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for (int k = 0; k < moves.length; k++) {
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}
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for (int i = 0; i < moves.length; i++) {
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for (int j = i + 1; j < moves.length; j++) {
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if (newPos[i][0] == newPos[j][0] && newPos[i][1] == newPos[j][1]) {
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collision[j] = true;
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}
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if (newPos[i][0] == currentPos[j][0] && newPos[i][1] == currentPos[j][1] && newPos[j][0] == currentPos[i][0] && newPos[j][1] == currentPos[i][1]) {
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collision[j] = true;
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}
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}
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}
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return collision;
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}
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}
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