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POCapturing stones in Go board game
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  1. POCapturing stones in Go board game
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    copied!<p>I am trying recreate the board game "go" in Java. I am currently working on the capturing system. Basically once a stone has been surrounded by the enemy stone on all four sides (diagonal don't count) you remove that stone. Like in the screenshot below. </p> <p><img src="https://i.stack.imgur.com/lFU64.png" alt="enter image description here"></p> <p>Or if multiple of the same stones are connected you have to surround all the open sides. Like in the screenshot below. </p> <p><img src="https://i.stack.imgur.com/3Qras.png" alt="enter image description here"></p> <p>In both cases the black stones should be removed at this point. This link explains more on the rules of capturing stones. societies.cam. ac. uk /cugos/go/rules_03.html</p> <p>I was told it would be best to use recursion to do this. After doing some research on recursion I managed to write some code. But it's not working. It only seems to detect the enemy stone on the second move of the game. I call my method every time a stone is placed in my mouseReleased. </p> <pre><code>public static boolean checkCapture(int x, int y) { { if ((board[x][y + 1] != move) &amp;&amp; (board[x][y + 1] != 0)) //bellow { System.out.println("enemy is bellow"); if (checkCapture(x, y + 1)) board[x][y] = 0; } else if (board[x][y + 1] == 0) { return false; } if ((board[x][y - 1] != move) &amp;&amp; (board[x][y - 1] != 0)) //above { System.out.println("enemy is above"); if (checkCapture(x, y - 1)) board[x][y] = 0; } else if (board[x][y - 1] == 0) { return false; } if ((board[x + 1][y] != move) &amp;&amp; (board[x + 1][y] != 0)) // right { System.out.println("enemy is right"); if (checkCapture(x + 1, y)) board[x][y] = 0; } else if (board[x + 1][y] == 0) { return false; } if ((board[x - 1][y] != move) &amp;&amp; (board[x - 1][y] != 0)) //left { System.out.println("enemy is left"); if (checkCapture(x - 1, y)) board[x][y] = 0; } else if (board[x - 1][y] == 0) { return false; } } return true; } </code></pre> <p>My int x is my column and my int y is my row, move is my variable that holds whose turn it is( 1 = black , 2 = white) board is my 2d array that holds the position of all the stones on the board. </p>
 

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