private GameNode[] GetNeighbors(GameNode node)
{
GameNode[] neighbors = new GameNode[4];
int node_row = node.GetRowInd();
int node_col = node.GetColInd();
neighbors[NORTH] = GetNode(node_row - 1, node_col); //up
neighbors[SOUTH] = GetNode(node_row + 1, node_col); //down
neighbors[EAST] = GetNode(node_row, node_col + 1); //right
neighbors[WEST] = GetNode(node_row, node_col - 1); //left
return(neighbors);
}
