verification des coups passes

TP1/C-Cpp/Screens-1/screen-0.txt

@@ -5,4 +5,3 @@
 #......#
 #      #
 ########
-

TP1/C-Cpp/includes/mysok.h

@@ -53,6 +53,6 @@ typedef struct {
 } Node;
 
 int bfs(Node &result);
-int dfs(Node &result, int depth);
+int dfs(Node &result, int depth, std::vector<Node> history);
 
 #endif

TP1/C-Cpp/src/mysok.cpp

@@ -99,6 +99,22 @@ void sok_board_t::load(char *_file) {
   fclose(fp);
 }
 
+bool is_in_history(Node current, std::vector<Node> history) {
+  for (int i = 0; i < history.size(); ++i) {
+    Node noeud = history[i];
+
+    int c = 0;
+    for (int l = 0; l < NBL; ++l) {
+      for (int m = 0; m < NBC; ++m) {
+        if (current.state.board[l][m] != current.state.board[l][m]) c++;
+      }
+    }
+
+    if (c == 0) return true;
+  }
+  return false;
+}
+
 int bfs(Node &result) {
   // Création de la queue de BFS
   std::queue<Node> q;
@@ -219,7 +235,8 @@ int bfs(Node &result) {
   return -1;
 }
 
-int dfs(Node &result, int depth) {
+int dfs(Node &result, int depth, std::vector<Node> history) {
+
   // Si on a atteint la profondeur maximale, on arrête la recherche
   if (depth == MAX_DEPTH) {
     /* std::cout << "max\n"; */
@@ -268,10 +285,15 @@ int dfs(Node &result, int depth) {
       next_dfs.path_len = result.path_len + 1;
       next_dfs.path = result.path + move_str[i] + " ";
 
-      int res = dfs(next_dfs, depth + 1);
-      if (res == 0) {
-        result = next_dfs;
-        return 0;
+      if (!is_in_history(next_dfs, history)) {
+        history.push_back(next_dfs);
+        int res = dfs(next_dfs, depth + 1, history);
+        if (res == 0) {
+          result = next_dfs;
+          return 0;
+        }
+      } else {
+        return -1;
       }
     }
 
@@ -322,10 +344,15 @@ int dfs(Node &result, int depth) {
       next_dfs.path_len = result.path_len + 1;
       next_dfs.path = result.path + move_str[i] + " ";
 
-      int res = dfs(next_dfs, depth + 1);
-      if (res == 0) {
-        result = next_dfs;
-        return 0;
+      if (!is_in_history(next_dfs, history)) {
+        history.push_back(next_dfs);
+        int res = dfs(next_dfs, depth + 1, history);
+        if (res == 0) {
+          result = next_dfs;
+          return 0;
+        }
+      } else {
+        return -1;
       }
     }
   }

TP1/C-Cpp/src/r0.cpp

@@ -23,7 +23,9 @@ int main(int _ac, char **_av) {
     std::cout << "Solution : " << result.path << "\n";
   } */
 
-  if (dfs(result, 0) == -1) {
+  std::vector<Node> history;
+
+  if (dfs(result, 0, history) == -1) {
     std::cout << "Aucune solution trouvée\n";
   } else {
     std::cout << "Coups : " << result.path_len << "\n";