CMakeLists.txt

@@ -72,6 +72,7 @@ set(SRC_CXX_FILES "./src/main.cpp"
                   "./src/render.cpp"
                   "./src/control_menu.cpp"
                   "./src/settings_menu.cpp"
+                  "./src/selection_menu.cpp"
                   "${rlImGui_SOURCE_DIR}/rlImGui.cpp"
                   "${imgui_SOURCE_DIR}/imgui.cpp"
                   "${imgui_SOURCE_DIR}/imgui_draw.cpp"

includes/context.hpp

@@ -18,12 +18,14 @@ class Render;
 
 namespace gol {
 class SettingsMenu;
+class SelectionMenu;
 
 typedef struct ctx {
   std::shared_ptr<World> world = nullptr;
   std::shared_ptr<Rules> rules = nullptr;
   std::shared_ptr<Render> render = nullptr;
   std::shared_ptr<SettingsMenu> settings_menu = nullptr;
+  std::shared_ptr<SelectionMenu> selection_menu = nullptr;
   nlohmann::json config_json;
 } ctx;
 

includes/selection_menu.hpp

@@ -0,0 +1,38 @@
+/*
+* File name: selection_menu.hpp
+* Author: lejulien
+* Date created: 13-01-2026 22:12:44
+// Date modified: 13-01-2026 22:18:58
+* ------
+*/
+
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include <imgui.h>
+#include <raylib.h>
+#include <rlImGui.h>
+
+#include <context.hpp>
+
+namespace gol {
+
+class SelectionMenu {
+public:
+  SelectionMenu(std::shared_ptr<ctx> context);
+  ~SelectionMenu();
+  void update();
+  void display();
+  void setSelection(std::vector<uint32_t> selection);
+  void open();
+private:
+  std::shared_ptr<ctx> context_;
+  RenderTexture2D selectionTexture_;
+  std::vector<uint32_t> sel_data_ = {};
+  bool sel_ctrl_ = false;
+  char patern_name_[255];
+};
+
+} // namespace gol

src/main.cpp

@@ -8,7 +8,6 @@
 
 #include <fstream>
 #include <iostream>
-#include <filesystem>
 #include <unistd.h>
 #include <nlohmann/json.hpp>
 
@@ -23,6 +22,7 @@
 #include <context.hpp>
 #include <control_menu.hpp>
 #include <settings_menu.hpp>
+#include <selection_menu.hpp>
 
 Vector2 snapToGrid(Vector2 screen, int cell_size) {
   return {static_cast<float>(round(screen.x / cell_size) * cell_size),
@@ -96,15 +96,13 @@ int main(int ac, char **av) {
   SetTargetFPS(60);
 
   rlImGuiSetup(context->config_json["dark_theme"]);
-  // Selection window
-
-  RenderTexture2D selectionTexture = LoadRenderTexture(200, 200);
 
   // Initialize objects
   context->world = std::make_shared<World>(context);
   context->rules = std::make_shared<Rules>();
   context->settings_menu = std::make_shared<gol::SettingsMenu>(context);
   context->render = std::make_shared<Render>(context->settings_menu->getCellSize());
+  context->selection_menu = std::make_shared<gol::SelectionMenu>(context);
 
   // Imgui control menu
   gol::ControlMenu control_menu(context);
@@ -117,11 +115,6 @@ int main(int ac, char **av) {
   // Selection window
   Vector2 sel_pos = {0., 0.};
   bool selecting = false;
-  std::vector<uint32_t> sel_data = {};
-  bool sel_ctrl = false;
-  char patern_name[255];
-  patern_name[0] = '\0';
-  std::string sel_txt_input_hint("patern name");
 
   // Setups
   context->rules->setup(context->world);
@@ -165,14 +158,12 @@ int main(int ac, char **av) {
         };
         // Ensure there is at least one cell selected
         if (!(sel_size.x == 0 || sel_size.y == 0)) {
-          sel_data = std::move(context->world->getSelection(orig, sel_size));
-          sel_ctrl = true;
+          context->selection_menu->setSelection(context->world->getSelection(orig, sel_size));
+          context->selection_menu->open();
         }
       }
     }
-    if (!sel_ctrl) {
-      patern_name[0] = '\0';
-    }
+    context->selection_menu->update();
     context->settings_menu->update();
 
     // Accumulate time and update simulation at the adjusted speed
@@ -210,70 +201,7 @@ int main(int ac, char **av) {
       ImGui::End();
     }
     context->settings_menu->display();
-    if (sel_ctrl) {
-      BeginTextureMode(selectionTexture);
-      ClearBackground(BLACK);
-      auto max_size = (sel_data[0] > sel_data[1]) ? sel_data[0] : sel_data[1];
-      int fitted_width = 200 / max_size;
-      auto sel_it = sel_data.begin();
-      sel_it += 2; // skip dimensions
-      for (int j = 0; j < sel_data[1]; j++) {
-        for (int i = 0; i < sel_data[0]; i++) {
-          if (*sel_it == 1) {
-            DrawRectangle(i * fitted_width, (sel_data[1] -j-1) * fitted_width, fitted_width, fitted_width, WHITE);
-          }
-          sel_it++;
-        }
-      }
-      EndTextureMode();
-      ImGuiWindowFlags settings_flags =
-          ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoResize;
-      ImGui::Begin("Selection", &sel_ctrl, settings_flags);
-      rlImGuiImageSize(&selectionTexture.texture, 200, 200);
-      ImGui::InputText(sel_txt_input_hint.c_str(), patern_name, 255);
-      if (ImGui::Button("Save")) {
-        char path_buf[1024];
-        ssize_t len = readlink("/proc/self/exe", path_buf, sizeof(path_buf)-1);
-        if (len != -1) {
-          // Create paterns dir if not present
-          std::filesystem::path paterns_dir = std::filesystem::path(path_buf).parent_path() / "paterns";
-          if (!std::filesystem::exists(paterns_dir) && !std::filesystem::create_directory(paterns_dir)) {
-            std::cerr << "Failed to create paterns directory" << std::endl;
-          } else { // Could be optimized by early returning in a function
-            std::ofstream patern_file;
-            paterns_dir += '/';
-            paterns_dir += patern_name;
-            patern_file.open(paterns_dir);
-            if (!patern_file) {
-              std::cerr << "Failed to create the patern file" << std::endl;
-            } else {
-              auto sel_it = sel_data.begin();
-              sel_it += 2; // skip dimensions
-              patern_file << sel_data[0];
-              patern_file << "|"; // Separator needed to split as ascii values
-              patern_file << sel_data[1];
-              patern_file << "|"; // Separator needed to split as ascii values
-              for (int j = 0; j < sel_data[1]; j++) {
-                for (int i = 0; i < sel_data[0]; i++) {
-                  patern_file << std::to_string(*sel_it);
-                  if (*sel_it == 1) {
-                  }
-                  sel_it++;
-                }
-              }
-              patern_file << std::flush;
-              patern_file.close();
-            }
-          }
-          sel_ctrl = false;
-        }
-      }
-      ImGui::SameLine();
-      if (ImGui::Button("Discard")) {
-        sel_ctrl = false;
-      }
-      ImGui::End();
-    }
+    context->selection_menu->display();
     // End ImGui frame
     rlImGuiEnd();
     EndDrawing();
@@ -281,8 +209,6 @@ int main(int ac, char **av) {
   config_file.open(config_file_name, std::ios::out | std::ios::trunc);
   config_file << context->config_json.dump(2);
   config_file.close();
-  // Cleanup Selection texture
-  UnloadRenderTexture(selectionTexture);
   rlImGuiShutdown();
   CloseWindow();
   return 0;

src/selection_menu.cpp

@@ -0,0 +1,109 @@
+/*
+* File name: selection_menu.cpp
+* Author: lejulien
+* Date created: 13-01-2026 22:12:44
+// Date modified: 13-01-2026 22:18:58
+* ------
+*/
+
+#include <unistd.h>
+#include <iostream>
+#include <fstream>
+#include <filesystem>
+
+#include <selection_menu.hpp>
+
+namespace gol {
+
+SelectionMenu::SelectionMenu(std::shared_ptr<ctx> context): context_(context) {
+  selectionTexture_ = LoadRenderTexture(200, 200);
+  patern_name_[0] = '\0';
+
+}
+
+SelectionMenu::~SelectionMenu() {
+  UnloadRenderTexture(selectionTexture_);
+}
+
+void SelectionMenu::update() {
+    if (!sel_ctrl_) {
+      patern_name_[0] = '\0';
+    }
+}
+
+void SelectionMenu::open() {
+  sel_ctrl_ = true;
+}
+
+void SelectionMenu::setSelection(std::vector<uint32_t> selection) {
+  sel_data_ = selection;
+}
+
+void SelectionMenu::display() {
+  if (sel_ctrl_) {
+    BeginTextureMode(selectionTexture_);
+    ClearBackground(BLACK);
+    auto max_size = (sel_data_[0] > sel_data_[1]) ? sel_data_[0] : sel_data_[1];
+    int fitted_width = 200 / max_size;
+    auto sel_it = sel_data_.begin();
+    sel_it += 2; // skip dimensions
+    for (int j = 0; j < sel_data_[1]; j++) {
+      for (int i = 0; i < sel_data_[0]; i++) {
+        if (*sel_it == 1) {
+          DrawRectangle(i * fitted_width, (sel_data_[1] -j-1) * fitted_width, fitted_width, fitted_width, WHITE);
+        }
+        sel_it++;
+      }
+    }
+    EndTextureMode();
+    ImGuiWindowFlags settings_flags =
+        ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoResize;
+    ImGui::Begin("Selection", &sel_ctrl_, settings_flags);
+    rlImGuiImageSize(&selectionTexture_.texture, 200, 200);
+    ImGui::InputText("patern_name", patern_name_, 255);
+    if (ImGui::Button("Save")) {
+      char path_buf[1024];
+      ssize_t len = readlink("/proc/self/exe", path_buf, sizeof(path_buf)-1);
+      if (len != -1) {
+        // Create paterns dir if not present
+        std::filesystem::path paterns_dir = std::filesystem::path(path_buf).parent_path() / "paterns";
+        if (!std::filesystem::exists(paterns_dir) && !std::filesystem::create_directory(paterns_dir)) {
+          std::cerr << "Failed to create paterns directory" << std::endl;
+        } else { // Could be optimized by early returning in a function
+          std::ofstream patern_file;
+          paterns_dir += '/';
+          paterns_dir += patern_name_;
+          patern_file.open(paterns_dir);
+          if (!patern_file) {
+            std::cerr << "Failed to create the patern file" << std::endl;
+          } else {
+            auto sel_it = sel_data_.begin();
+            sel_it += 2; // skip dimensions
+            patern_file << sel_data_[0];
+            patern_file << "|"; // Separator needed to split as ascii values
+            patern_file << sel_data_[1];
+            patern_file << "|"; // Separator needed to split as ascii values
+            for (int j = 0; j < sel_data_[1]; j++) {
+              for (int i = 0; i < sel_data_[0]; i++) {
+                patern_file << std::to_string(*sel_it);
+                if (*sel_it == 1) {
+                }
+                sel_it++;
+              }
+            }
+            patern_file << std::flush;
+            patern_file.close();
+          }
+        }
+        sel_ctrl_ = false;
+      }
+    }
+    ImGui::SameLine();
+    if (ImGui::Button("Discard")) {
+      sel_ctrl_ = false;
+    }
+    ImGui::End();
+  }
+}
+
+} // namespace gol