support.js

function getPosTop(i, j) {
    return 20 + i * 120;

}

function getPosLeft(i, j) {
    return 20 + j * 120;

}

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;

    }
}

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

    return "white";

}

function canMove(board, direction) {
    switch (direction) {
        case "left":
            return MoveLeft(board);
        case "up":
            return MoveUp(board);
        case "right":
            return MoveRight(board);
        case "down":
            return MoveDown(board);
        default:
            return false;
    }
}

function MoveLeft(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 MoveUp(board) {
    for (var i = 1; i < 4; i++) {
        for (var j = 0; j < 4; j++) {
            if (board[i][j] !== 0) {
                if (board[i - 1][j] === 0 || board[i - 1][j] === board[i][j]) {
                    return true;
                }
            }
        }
    }
    return false;
}

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


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

}