carefulMoveToSnippet.js

var avoid = [];
if (sourceKeepersInRoom.length)
{
    for (var sk = 0; sk < sourceKeepersInRoom.length; sk++)
    {
        var center = sourceKeepersInRoom[sk].pos;
        var top = center.y - 4;
        var bottom = center.y + 4;
        var left = center.x - 4;
        var right = center.x + 4;

        // generate room positions for each row and column
        for (var rowIndex = top; rowIndex < bottom + 1; rowIndex++)
        {
            for (var columnIndex = left; columnIndex < right + 1; columnIndex++)
            {
                var avoidPosition = creep.room.getPositionAt(columnIndex, rowIndex);
                if (avoidPosition != null)
                    avoid.push(avoidPosition);
                if (sk == 0)
                {
                    var flagName = rowIndex + ' ' + columnIndex;
                }
            }
        }
    }
}


var moveResult = creep.moveTo(target, { avoid: avoid, reusePath: 30 });