Removed "magic numbers" by adding generateLeftSideArray and generateRightSideArray to SnakeBot.java. Added calculateCharIndexFromCoordinates function.
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@ -29,7 +29,7 @@ public class EscapeBot extends Bot{
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}
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protected char nextMove(View view){
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boolean rocketDetected = view.data.contains("o");
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return rocketDetected ? goToRocket(view) : walkBySpiral();
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return rocketDetected ? goToRocket(view) : walkBySpiral(view);
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}
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private char goToRocket(View view){
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@ -38,13 +38,13 @@ public class EscapeBot extends Bot{
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}
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private int findRocketRow(View view) {
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return view.data.indexOf('o') / 5;
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return view.data.indexOf('o') / view.width;
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}
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private char walkBySpiral(){
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private char walkBySpiral(View view){
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if (moves.isEmpty()) {
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spiralNumber++;
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moves += "^".repeat(5 * spiralNumber) + ">" + "^".repeat(5 * spiralNumber) + ">";
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moves += "^".repeat(view.width * spiralNumber) + ">" + "^".repeat(view.width * spiralNumber) + ">";
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}
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char nextMove = moves.charAt(0);
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moves = moves.substring(1);
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@ -26,9 +26,12 @@ public class SnakeBot extends Bot{
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protected char nextMove(View view){
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boolean stoneDetected = view.data.contains("@");
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char nextMove;
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nextMove = (stoneDetected && !ignoreStone) ? goToStone(view) : walkBySpiral();
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nextMove = (stoneDetected && !ignoreStone) ? goToStone(view) : walkBySpiral(view);
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if(nextMove == '^' && view.data.charAt(7) == '*'){
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int centerCoordinateOfView = view.width / 2;
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int frontCellIndex = calculateCharIndexFromCoordinates(view.width, centerCoordinateOfView, centerCoordinateOfView - 1);
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if(nextMove == '^' && view.data.charAt(frontCellIndex) == '*'){
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nextMove = (countCollectedStonesLeft(view) <= countCollectedStonesRight(view)) ? '<' : '>';
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ignoreStone = true;
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}
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@ -37,23 +40,19 @@ public class SnakeBot extends Bot{
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}
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private int countCollectedStonesLeft(View view) {
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int[] leftStones = {0, 1, 5, 6, 10, 11, 15, 16, 20, 21};
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int[] leftSide = generateLeftSideArray(view.width);
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int stones = 0;
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for (int stone : leftStones) {
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if(view.data.charAt(stone) == '*'){
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stones++;
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}
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for (int cellIndex : leftSide) {
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if(view.data.charAt(cellIndex) == '*') stones++;
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}
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return stones;
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}
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private int countCollectedStonesRight(View view) {
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int[] rightStones = {3, 4, 8, 9, 13, 14, 18, 19, 23, 24};
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int[] rightSide = generateRightSideArray(view.width);
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int stones = 0;
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for (int stone : rightStones) {
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if(view.data.charAt(stone) == '*'){
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stones++;
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}
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for (int cellIndex : rightSide) {
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if(view.data.charAt(cellIndex) == '*') stones++;
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}
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return stones;
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}
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@ -70,21 +69,51 @@ public class SnakeBot extends Bot{
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}
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private char goToStone(View view){
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int rowDifference = findStoneRow(view) - 2;
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int rowDifference = findStoneRow(view) - (view.width / 2);
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return rowDifference < 0 ? '^' : '<';
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}
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private int findStoneRow(View view) {
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return view.data.indexOf('@') / 5;
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return view.data.indexOf('@') / view.width;
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}
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private char walkBySpiral(){
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private char walkBySpiral(View view){
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if (moves.isEmpty()) {
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spiralNumber++;
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moves += "^".repeat(5 * spiralNumber) + ">" + "^".repeat(5 * spiralNumber) + ">";
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moves += "^".repeat(view.width * spiralNumber) + ">" + "^".repeat(view.width * spiralNumber) + ">";
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}
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char nextMove = moves.charAt(0);
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moves = moves.substring(1);
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return nextMove;
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}
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private int calculateCharIndexFromCoordinates(int width, int x, int y){
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return width * y + x;
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}
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private int[] generateLeftSideArray(int sideLength) {
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int[] leftStones = new int[sideLength / 2 * sideLength];
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int index = 0;
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for (int row = 0; row < sideLength; row++) {
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for (int col = 0; col < sideLength / 2; col++) {
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leftStones[index++] = row * sideLength + col;
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}
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}
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return leftStones;
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}
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private int[] generateRightSideArray(int sideLength) {
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int[] rightStones = new int[sideLength / 2 * sideLength];
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int index = 0;
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for (int row = 0; row < sideLength; row++) {
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for (int col = (sideLength / 2) + 1; col < sideLength; col++) {
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rightStones[index++] = row * sideLength + col;
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}
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}
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return rightStones;
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}
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}
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