function getCellsAroundCell(center, scope_min, scope_max, obstacles)
{
    var instructions = getInstructionsCount();
    var cells = [];
    for (var x = 0; x <= scope_max; x++)
        for (var y = 0; y <= scope_max; y++)
            if (x+y >= scope_min and x+y <= scope_max)
                pushAll(cells, [/*1*/
                                ((getCellFromXY(getCellX(center) + x, getCellY(center) + y) === null)
                                ?
                                    null
                                :
                                    ((obstacles)
                                    ?
                                        getCellFromXY(getCellX(center) + x, getCellY(center) + y)
                                    :
                                        ((isObstacle(getCellFromXY(getCellX(center) + x, getCellY(center) + y)))
                                        ?
                                            null
                                        :
                                            getCellFromXY(getCellX(center) + x, getCellY(center) + y)))),
                                /*2*/
                                ((getCellFromXY(getCellX(center) - x, getCellY(center) + y) === null)
                                ?
                                    null
                                :
                                    ((obstacles)
                                    ?
                                        getCellFromXY(getCellX(center) - x, getCellY(center) + y)
                                    :
                                        ((isObstacle(getCellFromXY(getCellX(center) - x, getCellY(center) + y)))
                                        ?
                                            null
                                        :
                                            getCellFromXY(getCellX(center) - x, getCellY(center) + y)))),
                                /*3*/
                                ((getCellFromXY(getCellX(center) + x, getCellY(center) - y) === null)
                                ?
                                    null
                                :
                                    ((obstacles)
                                    ?
                                        getCellFromXY(getCellX(center) + x, getCellY(center) - y)
                                    :
                                        ((isObstacle(getCellFromXY(getCellX(center) + x, getCellY(center) - y)))
                                        ?
                                            null
                                        :
                                            getCellFromXY(getCellX(center) + x, getCellY(center) - y)))),
                                /*4*/
                                ((getCellFromXY(getCellX(center) - x, getCellY(center) - y) === null)
                                ?
                                    null
                                :
                                    ((obstacles)
                                    ?
                                        getCellFromXY(getCellX(center) - x, getCellY(center) - y)
                                    :
                                        ((isObstacle(getCellFromXY(getCellX(center) - x, getCellY(center) - y)))
                                        ?
                                            null
                                        :
                                            getCellFromXY(getCellX(center) - x, getCellY(center) - y))))]);
    while (inArray(cells, null)) removeElement(cells, null);
    debug(getInstructionsCount() - instructions);
    return cells;
}