web小游戏 2048制作（三）:辅助函数 support2048.js

function getPosTop(i,j)
{
	return 20+i*120;
}
function getPosLeft(i,j)
{
	return 20+j*120;
}
function getBackGroundColor(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(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 canMoveUp(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 canMoveRight(board)
{
   for(var i=0;i<4;i++)
  {
      for (var j=0;j<3;j++)
      {
        if(board[i][j]!=0)
        {
          if(board[i][j+1]==0||board[i][j+1]==board[i][j])
          {
            return true;
          }
        }
      }
  }
  return false;
}
function canMoveDown(board)
{
  for(var i=0;i<3;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 noRowBlock(row,col1,col2,board)
{
  for(var i=col1+1;i