Random image selection

Added a dialog box about.
Checks if the selected file is correct.

1 files changed, 26 insertions, 3 deletions

diff --git a/puzzle.cpp b/puzzle.cpp
index 0d9dc11..3fbd026 100644
--- a/puzzle.cpp
+++ b/puzzle.cpp
@@ -1,11 +1,15 @@
 #include "puzzle.hpp"
 #include "gameplay.hpp"
 
+#include <algorithm>
 #include <stdlib.h>
 #include <string>
 #include <FL/Fl_PNG_Image.H>
 #include <utility>
 #include <memory>
+#include <filesystem>
+#include <random>
+
 
 GameParams* GameParams::instance = nullptr;
 
@@ -28,10 +32,11 @@ void GameParams::ResetFreePuzzles()
         free_puzzles[i] = 1;
 }
 
-static void find_path_to_picture(std::string& path, int number)
+static void find_path_to_picture(std::string& path,
+                                 const std::string& cur_directory, int number)
 {
     path =
-        "resources/tucan/" + std::to_string(number / puzzles_per_side) +
+        cur_directory + std::to_string(number / puzzles_per_side) +
         std::to_string(number % puzzles_per_side) + ".png";
 }
 
@@ -66,7 +71,8 @@ void GameParams::NextUntestedPuzzles()
             std::unique_ptr<Puzzle>(new Puzzle(standard_puzzle_coordinates[i].x,
                                 standard_puzzle_coordinates[i].y));
         tmp_puzzle->sequence_number = idx_random_puzzle;
-        find_path_to_picture(tmp_puzzle->path, tmp_puzzle->sequence_number);
+        find_path_to_picture(tmp_puzzle->path, cur_directory,
+                             tmp_puzzle->sequence_number);
         Fl_PNG_Image *img = new Fl_PNG_Image(tmp_puzzle->path.c_str());
         // TODO check fails img->fail();
         tmp_puzzle->image(img);
@@ -93,3 +99,20 @@ void GameParams::CreateNewPuzzles()
         NextUntestedPuzzles();
     } while(!IsSolvability());
 }
+
+void GameParams::SelectRandomPicture()
+{
+    std::vector<std::string> choices;
+    for (const auto& entry : std::filesystem::directory_iterator("resources")) {
+        choices.emplace_back(entry.path().string());
+    }
+    std::random_device rd;
+    std::mt19937 g(rd());
+    std::shuffle(choices.begin(), choices.end(), g);
+    cur_directory = choices[0];
+#if defined(_WIN32)
+    cur_directory.append("\\");
+#else
+    cur_directory.append("/");
+#endif
+}