127 lines
2.2 KiB
Plaintext
127 lines
2.2 KiB
Plaintext
class Board {
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// Array of 0 by default
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// X=1
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// O=2
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field Array gameState;
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field int turn;
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constructor Board new() {
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var int i;
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let i=0;
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let turn = 0;
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let gameState = Array.new(9);
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while(i<9) {
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let gameState[i] = 0;
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let i=i+1;
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}
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return this;
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}
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method boolean isRowTaken(int row, int value) {
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if (gameState[row*3] = value &
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gameState[(row*3)+1] = value &
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gameState[(row*3)+2] = value) {
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return true;
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}
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return false;
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}
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method boolean isColumnTaken(int column, int value) {
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if (gameState[column] = value &
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gameState[column+3] = value &
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gameState[column+6] = value) {
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return true;
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}
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return false;
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}
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method boolean isWon(int value) {
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if (isRowTaken(0,value) | isRowTaken(1, value) | isRowTaken(1, value)) {
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return true;
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}
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if (isColumnTaken(0, value) | isColumnTaken(1, value) | isColumnTaken(2, value)) {
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return true;
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}
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if (isDiagonalTaken(value)) {
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return true;
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}
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return false;
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}
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method boolean isDiagonalTaken(int value) {
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// ensure center is correct first
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if (~(gameState[4] = value )) {
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return false;
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}
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// NORTH WEST TO SOUTH EAST
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if (gameState[0] = value & gameState[8] = value) {
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return true;
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}
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if (gameState[2] = value & gameState[6] = value) {
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return true;
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}
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return false;
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}
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// returns 1 if player X won
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// returns 2 if player O won
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// 0 otherwise
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method int winner() {
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if(isWon(1)) {
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return 1;
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}
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if(isWon(2)) {
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return 2;
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}
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return 0;
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}
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method boolean play(int row, int column) {
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var int move, remainder;
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let move = 0;
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if (~ (gameState[(row*3) + column] = 0)) {
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return false;
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}
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let remainder = turn - (2 * (turn/2));
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if (remainder = 0) {
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let move = 1;
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} else {
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let move = 2;
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}
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let gameState[row*3 + column] = move;
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if (move = 1) {
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do Draw.DrawX(row, column);
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} else {
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if (move = 2) {
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do Draw.DrawO(row, column);
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}
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}
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if(isWon(1)) {
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return true;
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}
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if(isWon(2)) {
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return true;
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}
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if (turn = 8) {
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return true;
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}
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let turn = turn + 1;
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return false;
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}
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}
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