Started Yaze implementation using ImGui and improving workflow from previous projects

src/Application/Core/Controller.cc

@@ -0,0 +1,100 @@
+#include "Controller.h"
+
+namespace yaze {
+namespace Application {
+namespace Core {
+
+bool Controller::isActive() const { return active; }
+
+void Controller::onEntry() noexcept(false) {
+  window.Create();
+  renderer.Create(window.Get());
+  active = true;
+}
+
+void Controller::onInput() {
+  int wheel = 0;
+  SDL_Event event;
+  ImGuiIO& io = ImGui::GetIO();
+
+  while (SDL_PollEvent(&event)) {
+    switch (event.type) {
+      case SDL_KEYDOWN:
+        switch (event.key.keysym.sym) {
+          case SDLK_UP:
+          case SDLK_DOWN:
+          case SDLK_RETURN:
+          case SDLK_BACKSPACE:
+          case SDLK_TAB:
+            io.KeysDown[event.key.keysym.scancode] =
+                (event.type == SDL_KEYDOWN);
+            break;
+          default:
+            break;
+        }
+        break;
+
+      case SDL_KEYUP: {
+        int key = event.key.keysym.scancode;
+        IM_ASSERT(key >= 0 && key < IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[key] = (event.type == SDL_KEYDOWN);
+        io.KeyShift = ((SDL_GetModState() & KMOD_SHIFT) != 0);
+        io.KeyCtrl = ((SDL_GetModState() & KMOD_CTRL) != 0);
+        io.KeyAlt = ((SDL_GetModState() & KMOD_ALT) != 0);
+        io.KeySuper = ((SDL_GetModState() & KMOD_GUI) != 0);
+        break;
+      }
+      case SDL_WINDOWEVENT:
+        switch (event.window.event) {
+          case SDL_WINDOWEVENT_CLOSE:
+            active = false;
+            break;
+          case SDL_WINDOWEVENT_SIZE_CHANGED:
+            io.DisplaySize.x = static_cast<float>(event.window.data1);
+            io.DisplaySize.y = static_cast<float>(event.window.data2);
+            break;
+          default:
+            break;
+        }
+        break;
+      case SDL_TEXTINPUT:
+        io.AddInputCharactersUTF8(event.text.text);
+        break;
+      case SDL_MOUSEWHEEL:
+        wheel = event.wheel.y;
+        break;
+      default:
+        break;
+    }
+  }
+
+  int mouseX;
+  int mouseY;
+  const int buttons = SDL_GetMouseState(&mouseX, &mouseY);
+  io.DeltaTime = 1.0f / 60.0f;
+  io.MousePos = ImVec2(static_cast<float>(mouseX), static_cast<float>(mouseY));
+  io.MouseDown[0] = buttons & SDL_BUTTON(SDL_BUTTON_LEFT);
+  io.MouseDown[1] = buttons & SDL_BUTTON(SDL_BUTTON_RIGHT);
+  io.MouseWheel = static_cast<float>(wheel);
+}
+
+void Controller::onLoad() const { 
+  editor->UpdateScreen();
+}
+
+void Controller::doRender() {
+  renderer.Render();
+}
+
+void Controller::onExit() {
+  ImGui_ImplSDLRenderer_Shutdown();
+  ImGui_ImplSDL2_Shutdown();
+  ImGui::DestroyContext();
+  window.Destroy();
+  renderer.Destroy();
+  SDL_Quit();
+}
+
+}  // namespace Core
+}  // namespace Application
+}  // namespace yaze

src/Application/Core/Controller.h

@@ -0,0 +1,50 @@
+#ifndef YAZE_APPLICATION_CORE_CONTROLLER_H
+#define YAZE_APPLICATION_CORE_CONTROLLER_H
+
+#include <memory>
+
+#include <SDL2/SDL.h>
+
+#include "imgui/imgui.h"
+#include "imgui/imgui_internal.h"
+#include "imgui/backends/imgui_impl_sdl.h"
+#include "imgui/backends/imgui_impl_sdlrenderer.h"
+#include "imgui/misc/cpp/imgui_stdlib.h"
+
+#include "Window.h"
+#include "Renderer.h"
+#include "Events/Event.h"
+#include "View/Editor.h"
+
+int main(int argc, char** argv);
+
+namespace yaze {
+namespace Application {
+namespace Core {
+
+class Controller {
+ public:
+  Controller() = default;
+
+  bool isActive() const;
+
+  void onEntry();
+  void onInput();
+  void onLoad() const;
+  void doRender();
+  void onExit();
+
+ private:
+  Window window;  
+  Renderer renderer;
+  std::unique_ptr<View::Editor> editor;
+  bool active = false;
+  void quit() { active = false; }
+  friend int ::main(int argc, char** argv);
+};
+
+}  // namespace Core
+}  // namespace Application
+}  // namespace yaze
+
+#endif  // YAZE_APPLICATION_CORE_CONTROLLER_H

src/Application/Core/EntryPoint.h

@@ -0,0 +1,23 @@
+#ifndef YAZE_APPLICATION_CONTROLLER_ENTRYPOINT_H
+#define YAZE_APPLICATION_CONTROLLER_ENTRYPOINT_H
+
+#include "Controller.h"
+
+using namespace yaze::Application::Core;
+
+int main(int argc, char** argv) 
+{
+  Controller controller;
+
+  controller.onEntry();
+  while (controller.isActive()) {
+    controller.onInput();
+    controller.onLoad();
+    controller.doRender();
+  }
+  controller.onExit();
+
+  return EXIT_SUCCESS;
+}
+
+#endif  // YAZE_APPLICATION_CONTROLLER_ENTRYPOINT_H

src/Application/Core/Renderer.cc

@@ -0,0 +1,50 @@
+#include "Renderer.h"
+
+namespace yaze {
+namespace Application {
+namespace Core {
+
+void Renderer::Create(SDL_Window* window) {
+  if (window == nullptr) {
+    SDL_Log("SDL_CreateWindow: %s\n", SDL_GetError());
+    SDL_Quit();
+  } else {
+    renderer = SDL_CreateRenderer(
+        window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
+    if (renderer == nullptr) {
+      SDL_Log("SDL_CreateRenderer: %s\n", SDL_GetError());
+      SDL_Quit();
+    } else {
+      SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
+      SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0x00);
+    }
+  }
+
+  // Create the ImGui and ImPlot contexts
+  ImGui::CreateContext();
+
+  // Initialize ImGui for SDL
+  ImGui_ImplSDL2_InitForSDLRenderer(window, renderer);
+  ImGui_ImplSDLRenderer_Init(renderer);
+
+  // Build a new ImGui frame
+  ImGui_ImplSDLRenderer_NewFrame();
+  ImGui_ImplSDL2_NewFrame(window);
+}
+
+void Renderer::Render() {
+  SDL_RenderClear(renderer);
+  ImGui::Render();
+  ImGui_ImplSDLRenderer_RenderDrawData(ImGui::GetDrawData());
+  SDL_RenderPresent(renderer);
+}
+
+void Renderer::Destroy() {
+  SDL_DestroyRenderer(renderer);
+  renderer = nullptr;
+}
+
+
+}  // namespace Core
+}  // namespace Application
+}  // namespace yaze

src/Application/Core/Renderer.h

@@ -0,0 +1,30 @@
+#ifndef YAZE_APPLICATION_CORE_RENDERER_H
+#define YAZE_APPLICATION_CORE_RENDERER_H
+
+#include <SDL2/SDL.h>
+
+#include "imgui/imgui.h"
+#include "imgui/imgui_internal.h"
+#include "imgui/backends/imgui_impl_sdl.h"
+#include "imgui/backends/imgui_impl_sdlrenderer.h"
+#include "imgui/misc/cpp/imgui_stdlib.h"
+
+namespace yaze {
+namespace Application {
+namespace Core {
+
+  class Renderer {
+    public:
+      void Create(SDL_Window* window);
+      void Render();
+      void Destroy();
+
+    private:
+      SDL_Renderer* renderer = nullptr;
+  };
+
+}  // namespace Core
+}  // namespace Application
+}  // namespace yaze
+
+#endif  // YAZE_APPLICATION_CORE_RENDERER_H

src/Application/Core/Window.cc

@@ -0,0 +1,33 @@
+#include "Window.h"
+
+namespace yaze {
+namespace Application {
+namespace Core {
+
+// TODO: pass in the size of the window as argument 
+void Window::Create() {
+  if (SDL_Init(SDL_INIT_EVERYTHING)) {
+    SDL_Log("SDL_Init: %s\n", SDL_GetError());
+  } else {
+    window = SDL_CreateWindow("Yet Another Zelda3 Editor",  // window title
+                              SDL_WINDOWPOS_UNDEFINED,      // initial x position
+                              SDL_WINDOWPOS_UNDEFINED,      // initial y position
+                              800,                          // width, in pixels
+                              600,                          // height, in pixels
+                              SDL_WINDOW_RESIZABLE          // window flags 
+                             );
+  }
+}
+
+SDL_Window* Window::Get() {
+  return window;
+}
+
+void Window::Destroy() {
+  SDL_DestroyWindow(window);
+  window = nullptr;
+}
+
+}  // namespace Core
+}  // namespace Application
+}  // namespace yaze

src/Application/Core/Window.h

@@ -0,0 +1,24 @@
+#ifndef YAZE_APPLICATION_CORE_WINDOW_H
+#define YAZE_APPLICATION_CORE_WINDOW_H
+
+#include <SDL2/SDL.h>
+
+namespace yaze {
+namespace Application {
+namespace Core {
+
+class Window {
+ public:
+  void Create();
+  SDL_Window* Get();
+  void Destroy();
+
+ private:
+  SDL_Window* window = nullptr;
+};
+
+}  // namespace Core
+}  // namespace Application
+}  // namespace yaze
+
+#endif