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Hexapawn: Difference between revisions
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Note that you can get verbose output about possible moves, considered moves, and training by running with the <tt>-v</tt> command line flag.
=={{header|JavaScript}}==
You can try it [http://paulo-jorente.de/webtest/projects/js/hexapawn/ here].
<lang javascript>
var board, playBtn, turn, memory = [], lastMove = {brd: "", mvi: 0},
clicks = {first: null, second: null}, win = {c: 0, p: 0}, score;
function getPossibles() {
var pos = [], tp = turn == 0 ? "W" : "B", gp = turn == 0 ? "B" : "W";
for( var j = 0; j < 3; j++ ) {
var jj = j + (turn == 0 ? -1 : 1);
if( jj < 3 && jj > -1 ) {
for( var i = 0; i < 3; i++ ) {
if( board[i][j] == tp ) {
for( var k = -1; k < 2; k++ ) {
if(i + k > -1 && i + k < 3 &&
((board[i + k][jj] == " " && i + k == i) || (board[i + k][jj] == gp && i + k != i))) {
pos.push( {f: i + j * 3, t: i + k + jj * 3});
}
}
}
}
}
}
return pos;
}
function computerMoves() {
var brd = getBoard(), mvs, needSave = false;
for( var i = 0; i < memory.length; i++ ) {
if( memory[i].board == brd ) {
mvs = memory[i].moves;
break;
}
}
if( !mvs ) {
mvs = getPossibles();
needSave = true;
}
if( mvs.length == 0 ) return 0;
var idx = Math.floor( Math.random() * mvs.length );
lastMove.brd = brd;
lastMove.mvi = idx;
var i = mvs[idx].f % 3, j = Math.floor( mvs[idx].f / 3 ),
ii = mvs[idx].t % 3, jj = Math.floor( mvs[idx].t / 3 );
board[i][j] = " "; board[ii][jj] = "B";
if( needSave ) {
memory.push( {board: brd, moves: mvs} );
}
updateBtns();
return -1;
}
function getBoard() {
var str = "";
for( var j = 0; j < 3; j++ ) {
for( var i = 0; i < 3; i++ ) {
str += board[i][j];
}
}
return str;
}
function updateScore() {
score.innerHTML = "Player: " + win.p + " Computer: " + win.c;
}
function finish( r ) {
var str = "The Computer wins!";
if( r == 0 ) {
str = "You win!";
win.p++;
for( var i = 0; i < memory.length; i++ ) {
if( memory[i].board == lastMove.brd ) {
memory[i].moves.splice( lastMove.mvi, 1 );
break;
}
}
} else {
win.c++;
}
playBtn.innerHTML = str + "<br />Click to play.";
playBtn.className = "button long"
updateScore();
}
function checkFinished() {
if( getPossibles().length < 1 ) return turn == 0 ? 1 : 0;
for( var i = 0; i < 3; i++ ) {
if( board[i][0] == "W" ) return 0;
if( board[i][2] == "B" ) return 1;
}
var w = 0, b = 0;
for( var j = 0; j < 3; j++ ) {
for( var i = 0; i < 3; i++ ) {
if( board[i][j] == "W" ) w++;
if( board[i][j] == "B" ) b++;
}
}
if( w == 0 ) return 1;
if( b == 0 ) return 0;
return -1;
}
function nextPlayer() {
var r;
updateBtns();
turn = turn == 0 ? 1 : 0;
r = checkFinished();
if( r > -1 ) {
finish( r );
} else {
if( turn == 1 ) {
r = computerMoves();
if( r < 0 ) nextPlayer();
else finish( r );
}
}
}
function search( o, arr ) {
for( var i = 0; i < arr.length; i++ ) {
if( o.f == arr[i].f && o.t == arr[i].t ) return i;
}
return -1;
}
function btnHandle( e ) {
if( turn > 0 ) return;
if( clicks.first == null && e.target.firstChild.data == "W" ) {
clicks.first = e.target;
clicks.first.className += " marked"
} else if( clicks.first != null && e.target.firstChild.data == "W" ) {
clicks.first.className = clicks.first.className.split(" ")[0];
clicks.first = clicks.second = null;
} else if( clicks.first != null && ( e.target.firstChild.data == " " ||
e.target.firstChild.data == "B" ) ) {
clicks.second = e.target;
var moves = getPossibles( turn ),
i = clicks.first.i, ii = clicks.second.i,
j = clicks.first.j, jj = clicks.second.j,
obj = {f: i + j * 3, t: ii + jj * 3};
if( search( obj, moves ) > -1 ) {
board[i][j] = " "; board[ii][jj] = "W";
clicks.first.className = clicks.first.className.split(" ")[0];
clicks.first = clicks.second = null;
nextPlayer();
}
}
}
function updateBtns() {
var b, v;
for( var j = 0; j < 3; j++ ) {
for( var i = 0; i < 3; i++ ) {
b = document.getElementById( "btn" + ( i + j * 3 ) );
b.innerHTML = ( board[i][j] );
}
}
}
function restart() {
turn = 0;
createBoard();
updateBtns();
playBtn.className += " hide";
}
function createBoard() {
board = new Array( 3 );
for( var i = 0; i < 3; i++ ) {
board[i] = new Array( 3 );
}
for( var j = 0; j < 3; j++ ) {
for( var i = 0; i < 3; i++ ) {
board[i][j] = j == 0 ? "B" : j == 2 ? "W" : " ";
}
}
}
function createBtns() {
var b, d = document.createElement( "div" ), v = false;
d.className += "board";
document.body.appendChild( d );
for( var j = 0; j < 3; j++ ) {
for( var i = 0; i < 3; i++ ) {
b = document.createElement( "button" );
b.id = "btn" + ( i + j * 3 );
b.i = i; b.j = j;
b.addEventListener( "click", btnHandle, false );
b.appendChild( document.createTextNode( "" ) );
d.appendChild( b );
if( v ) b.className = "button"
else b.className = "empty";
v = !v;
}
}
playBtn = document.createElement( "button" );
playBtn.className = "button long hide";
playBtn.addEventListener( "click", restart, false );
score = document.createElement( "p" );
score.className = "txt";
d.appendChild( score );
d.appendChild( playBtn );
updateScore();
}
function init() {
createBtns();
restart();
}
</lang>
HTML (testing)
<pre><!DOCTYPE html>
<html><head><meta charset="UTF-8">
<title>Hexapawn</title>
<script src="hexa.js"></script>
<style>
html,body{padding:0; margin:0;padding-top:6vh;background:#222;color:#111}
.txt{color:#fff;text-align:center;font-size:6vh}
.board{padding:0;margin:auto;width:33vh;height:33vh}
.long, .button, .empty{border:1px solid #000;font-size:9vh;margin:0;padding:0;height:11vh;width:11vh;line-height:5vh;
vertical-align:middle;background:#fff;text-align:center;border-radius:3px;cursor:pointer;float:left}
.empty{background:#ccc}
.hide{display:none}
.marked{border:#f60 3px solid}
.long{width:100%;font-size:3vh}
</style>
</head><body onLoad="init()"></body></html>
</pre>
=={{header|Pascal}}==
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