support2048.js

/**
 * Created by dale on 2017/4/12.
 */
//获取当前设备屏幕宽度
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 getNumberColor(number) {
    if (number <= 4){
        return "#776e65";
    }
    return "white";
}
function nospace() {
    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, coll, col2, board) {
    for(var i = coll + 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() {
    if (canMoveDown(board) || canMoveUp(board) || canMoveLeft(board) || canMoveRight(board)){
        return false;
    }
    return true;
}

function gameover() {
    alert("游戏结束！")
}