public void calculate_road()
{
if (solved == true)
{
Cell_Depth current = get_cell_from_list(rows - 1, cols - 1); //start from the end then go back using the added_by field
while (true)
{
road.Push(new KeyValuePair <int, int>(current.x, current.y));
if ((current.added_by).Key == -1)
{
break;
}
current = get_cell_from_list(current.added_by.Key, current.added_by.Value);
}
}
else
{
Cell_Depth false_finish = cell_case_lab_hasnt_solve;
while (true)
{
road.Push(new KeyValuePair <int, int>(false_finish.x, false_finish.y));
if ((false_finish.added_by).Key == -1)
{
break;
}
false_finish = get_cell_from_list(false_finish.added_by.Key, false_finish.added_by.Value);
}
}
}
public Depth_solve(int r, int c, Cell[][] gr, int nr_nd, int str)
{
cell_case_lab_hasnt_solve = null;
solved = false;
rows = r;
cols = c;
grid = gr;
start_col = str;
nr_nodes = nr_nd;
road = new Stack <KeyValuePair <int, int> >();
cell_depth = new Cell_Depth[nr_nodes];
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
grid[i][j].visited = 0;
}
}
cont_noduri = 0;
fill_cell_depth();
//initiate_visit_list_cell();
solve();
calculate_road();
}
public Cell_Depth get_cell_from_list(int i, int j)
{
for (int cont = 0; cont < cont_noduri; cont++)
{
if (cell_depth[cont].x == i && cell_depth[cont].y == j)
{
return(cell_depth[cont]);
}
}
Cell_Depth null_cell = new Cell_Depth(-1, -1);
null_cell.visit = 1;
return(null_cell);
}
public void fill_cell_depth()
{
Queue <Cell> que = new Queue <Cell>();
que.Enqueue(grid[0][start_col]);
int[] wall = new int[4];
while (que.Count > 0)
{
Cell temp = que.Dequeue();
KeyValuePair <int, int> vecin_sus = new KeyValuePair <int, int>(-1, -1);
KeyValuePair <int, int> vecin_jos = new KeyValuePair <int, int>(-1, -1);
KeyValuePair <int, int> vecin_st = new KeyValuePair <int, int>(-1, -1);
KeyValuePair <int, int> vecin_dr = new KeyValuePair <int, int>(-1, -1);
int dist_sus = -1;
int dist_jos = -1;
int dist_st = -1;
int dist_dr = -1;
for (int i = 0; i < 4; i++)
{
wall[i] = temp.get_wall(i);
}
for (int i = 0; i < 4; i++)
{
if (wall[i] != -1)
{
int dist = 0;
Cell aux_cell;
switch (i)
{
case 0:
{
aux_cell = grid[temp.x - 1][temp.y];
dist++;
Boolean ok = new Boolean();
ok = true;
while (ok)
{
//caz blocat in directia de mers
if (aux_cell.get_wall(0) == -1)
{
ok = false;
}
//caz deschis in stanga
if (aux_cell.get_wall(2) != -1)
{
ok = false;
}
//caz deschis in dreapta
if (aux_cell.get_wall(3) != -1)
{
ok = false;
}
if (ok == true)
{
aux_cell = grid[aux_cell.x - 1][aux_cell.y];
dist++;
}
}
if (aux_cell.visited != 1)
{
que.Enqueue(aux_cell);
}
dist_sus = dist;
vecin_sus = new KeyValuePair <int, int>(aux_cell.x, aux_cell.y);
break;
}
case 1:
{
aux_cell = grid[temp.x + 1][temp.y];
dist++;
Boolean ok = new Boolean();
ok = true;
while (ok)
{
//caz blocat in directia de mers
if (aux_cell.get_wall(1) == -1)
{
ok = false;
}
//caz deschis in stanga
if (aux_cell.get_wall(2) != -1)
{
ok = false;
}
//caz deschis in dreapta
if (aux_cell.get_wall(3) != -1)
{
ok = false;
}
if (ok == true)
{
aux_cell = grid[aux_cell.x + 1][aux_cell.y];
dist++;
}
}
if (aux_cell.visited != 1)
{
que.Enqueue(aux_cell);
}
dist_jos = dist;
vecin_jos = new KeyValuePair <int, int>(aux_cell.x, aux_cell.y);
break;
}
case 2:
{
aux_cell = grid[temp.x][temp.y - 1];
dist++;
Boolean ok = new Boolean();
ok = true;
while (ok)
{
//caz blocat in directia de mers
if (aux_cell.get_wall(2) == -1)
{
ok = false;
}
//caz deschis in sus
if (aux_cell.get_wall(0) != -1)
{
ok = false;
}
//caz deschis in jos
if (aux_cell.get_wall(1) != -1)
{
ok = false;
}
if (ok == true)
{
aux_cell = grid[aux_cell.x][aux_cell.y - 1];
dist++;
}
}
if (aux_cell.visited != 1)
{
que.Enqueue(aux_cell);
}
dist_st = dist;
vecin_st = new KeyValuePair <int, int>(aux_cell.x, aux_cell.y);
break;
}
case 3:
{
aux_cell = grid[temp.x][temp.y + 1];
dist++;
Boolean ok = new Boolean();
ok = true;
while (ok)
{
//caz blocat in directia de mers
if (aux_cell.get_wall(3) == -1)
{
ok = false;
}
//caz deschis in sus
if (aux_cell.get_wall(0) != -1)
{
ok = false;
}
//caz deschis in jos
if (aux_cell.get_wall(1) != -1)
{
ok = false;
}
if (ok == true)
{
aux_cell = grid[aux_cell.x][aux_cell.y + 1];
dist++;
}
}
if (aux_cell.visited != 1)
{
que.Enqueue(aux_cell);
}
dist_dr = dist;
vecin_dr = new KeyValuePair <int, int>(aux_cell.x, aux_cell.y);
break;
}
}
}
}
//mark cell as visite
temp.visited = 1;
//Console.Write(temp.x + " " + temp.y + "\n");
//create it as disj cell
cell_depth[cont_noduri] = new Cell_Depth(temp.x, temp.y);
//set neighbours
cell_depth[cont_noduri].set_cell_neighbour(vecin_sus, 0);
cell_depth[cont_noduri].set_cell_neighbour(vecin_jos, 1);
cell_depth[cont_noduri].set_cell_neighbour(vecin_st, 2);
cell_depth[cont_noduri].set_cell_neighbour(vecin_dr, 3);
//set distance to neighbours
cell_depth[cont_noduri].set_dist_to_neighbour(dist_sus, 0);
cell_depth[cont_noduri].set_dist_to_neighbour(dist_jos, 1);
cell_depth[cont_noduri].set_dist_to_neighbour(dist_st, 2);
cell_depth[cont_noduri].set_dist_to_neighbour(dist_dr, 3);
cont_noduri++;
if (temp.x == rows - 1 && temp.y == cols - 1)
{
break;
}
}
}
public void solve()
{
///set path, now its set for down, left, right, up
int[] path = new int[] { 3, 1, 2, 0 };
Console.Write(path.ToString());
Boolean has_more_moves = true;
Cell_Depth current_cell = get_cell_from_list(0, start_col);
while (has_more_moves)
{
if (current_cell.x == rows - 1 && current_cell.y == cols - 1)
{
solved = true;
break;
}
KeyValuePair <int, int>[] arr_neighbor = current_cell.get_neighbor_arr();
current_cell.visit = 1;
Boolean has_switched = false;
Console.WriteLine(current_cell.x.ToString() + " " + current_cell.y.ToString());
for (int i = 0; i < arr_neighbor.Length; i++)
{
Console.WriteLine("neighbour " + i.ToString() + " " + arr_neighbor[i].Key.ToString() + " " + arr_neighbor[i].Value.ToString() + " " + get_cell_from_list(arr_neighbor[i].Key, arr_neighbor[i].Value).visit.ToString());
}
for (int i = 0; i < path.Length && has_switched == false; i++)
{
if (arr_neighbor[path[i]].Key != -1 && get_cell_from_list(arr_neighbor[path[i]].Key, arr_neighbor[path[i]].Value).visit != 1)
{
Cell_Depth next_cell = get_cell_from_list(arr_neighbor[path[i]].Key, arr_neighbor[path[i]].Value);
next_cell.added_by = new KeyValuePair <int, int>(current_cell.x, current_cell.y);
current_cell = next_cell;
has_switched = true;
}
}
//means that the current cell could not be switched because all the neighbour are unavailable
if (has_switched == false)
{
has_more_moves = false;
cell_case_lab_hasnt_solve = current_cell;
}
}
//stk_depth = new Stack<Cell_Depth>();
//stk_depth.Push(get_cell_from_list(0,start_col));
//int contor = 0;
//while (stk_depth.Count != 0)
//{
// Cell_Depth temp_cell = stk_depth.Pop();
// temp_cell.visit = 1;
// if (temp_cell.x == rows - 1 && temp_cell.y == cols - 1)
// {
// solved = true;
// break;
// }
// KeyValuePair<int, int>[] arr_neighbor = temp_cell.get_neighbor_arr();
// for (int i = 0; i < arr_neighbor.Length; i++)
// if (arr_neighbor[i].Key != -1 && get_cell_from_list(arr_neighbor[i].Key, arr_neighbor[i].Value).visit != 1)
// {
// Cell_Depth neighbor_to_be_added = get_cell_from_list(arr_neighbor[i].Key, arr_neighbor[i].Value);
// neighbor_to_be_added.added_by = new KeyValuePair<int, int>(temp_cell.x, temp_cell.y);
// stk_depth.Push(neighbor_to_be_added);
// }
//}
}
