support2048.js

/**
 * Created by liuyubobobo on 14-4-11.
 * my site: http://www.liuyubobobo.com
 */

documentWidth = window.screen.availWidth;
gridContainerWidth = 0.92 * documentWidth;
cellSideLength = 0.18 * documentWidth;
cellSpace = 0.04 * documentWidth;

function getPosTop(i, j) {
    return cellSpace + i * (cellSpace + cellSideLength);
}

function getPosLeft(i, j) {
    return cellSpace + j * (cellSpace + cellSideLength);
}

function getNumberBackgroundColor(number) {
    switch (number) {
        case 2: return "#eee4da"; break;
        case 4: return "#ede0c8"; break;
        case 8: return "#f2b179"; break;
        case 16: return "#f59563"; break;
        case 32: return "#f67c5f"; break;
        case 64: return "#f65e3b"; break;
        case 128: return "#edcf72"; break;
        case 256: return "#edcc61"; break;
        case 512: return "#9c0"; break;
        case 1024: return "#33b5e5"; break;
        case 2048: return "#09c"; break;
        case 4096: return "#a6c"; break;
        case 8192: return "#93c"; break;
    }

    return "black";
}
function getNumberText(number) {
    switch (number) {
        case 2: return "小白"; break;
        case 4: return "实习生"; break;
        case 8: return "程序猿"; break;
        case 16: return "项目经理"; break;
        case 32: return "架构师"; break;
        case 64: return "技术经理"; break;
        case 128: return "高级经理"; break;
        case 256: return "技术总监"; break;
        case 512: return "副总裁"; break;
        case 1024: return "CTO"; break;
        case 2048: return "总裁"; break;
        case 4096: return "#a6c"; break;
        case 8192: return "#93c"; break;
    }

    return "black";
}
function getNumberColor(number) {
    if (number <= 4)
        return "#776e65";

    return "white";
}

function nospace(board) {

    for (var i = 0; i < 4; i++)
        for (var j = 0; j < 4; j++)
            if (board[i][j] == 0)
                return false;

    return true;
}

function canMoveLeft(board) {

    for (var i = 0; i < 4; i++)
        for (var j = 1; j < 4; j++)
            if (board[i][j] != 0)
                if (board[i][j - 1] == 0 || board[i][j - 1] == board[i][j])
                    return true;

    return false;
}

function canMoveRight(board) {

    for (var i = 0; i < 4; i++)
        for (var j = 2; j >= 0; j--)
            if (board[i][j] != 0)
                if (board[i][j + 1] == 0 || board[i][j + 1] == board[i][j])
                    return true;

    return false;
}

function canMoveUp(board) {

    for (var j = 0; j < 4; j++)
        for (var i = 1; i < 4; i++)
            if (board[i][j] != 0)
                if (board[i - 1][j] == 0 || board[i - 1][j] == board[i][j])
                    return true;

    return false;
}

function canMoveDown(board) {

    for (var j = 0; j < 4; j++)
        for (var i = 2; i >= 0; i--)
            if (board[i][j] != 0)
                if (board[i + 1][j] == 0 || board[i + 1][j] == board[i][j])
                    return true;

    return false;
}

function noBlockHorizontal(row, col1, col2, board) {
    for (var i = col1 + 1; i < col2; i++)
        if (board[row][i] != 0)
            return false;
    return true;
}

function noBlockVertical(col, row1, row2, board) {
    for (var i = row1 + 1; i < row2; i++)
        if (board[i][col] != 0)
            return false;
    return true;
}

function nomove(board) {
    if (canMoveLeft(board) ||
        canMoveRight(board) ||
        canMoveUp(board) ||
        canMoveDown(board))
        return false;

    return true;
}