private void CreateListOfNodes(Terrain terrain)
    {
        listOfNodes = new Node[terrain.VERTEX_COUNT][terrain.VERTEX_COUNT];
        for(int i = 0; i<terrain.VERTEX_COUNT; i++)
        {
            for(int j=0; j<terrain.VERTEX_COUNT; j++)
            {
                Vector3f vector = new Vector3f();
                vector.setX((float) i / ((float) terrain.VERTEX_COUNT - 1) * terrain.SIZE);
                vector.setY(0);
                vector.setZ((float) j / ((float) terrain.VERTEX_COUNT - 1) * terrain.SIZE);

                List<Node> ListOfNeigbours = new ArrayList<>();
                if( i!=0)
                {
                    ListOfNeigbours.add(listOfNodes[i-1][j]);
                    //ListOfNeigbours.add(listOfNodes[i-1][j+1]);
                    //ListOfNeigbours.add(listOfNodes[i-1][j-1]);
                }
                if(j!=0)
                {
                    ListOfNeigbours.add(listOfNodes[i][j-1]);
                }
                if(j!=terrain.VERTEX_COUNT-1)
                {
                    ListOfNeigbours.add(listOfNodes[i][j+1]);
                }
                if(i!=terrain.VERTEX_COUNT-1)
                {
                    ListOfNeigbours.add(listOfNodes[i+1][j]);
                    //ListOfNeigbours.add(listOfNodes[i+1][j-1]);
                    //ListOfNeigbours.add(listOfNodes[i+1][j+1]);
                }
                Node node = new Node(vector,ListOfNeigbours);
                listOfNodes[i][j] = node;
            }
        }

    }