First commit

src/state.cpp

@@ -0,0 +1,87 @@
+#include "state.h"
+
+#include <backends/imgui_impl_opengl3.h>
+#include <backends/imgui_impl_sdl3.h>
+#include <imgui.h>
+
+using namespace glm;
+using namespace game::resource;
+
+namespace game
+{
+  constexpr auto TICK_RATE = 30;
+  constexpr auto TICK_INTERVAL = (1000 / TICK_RATE);
+  constexpr auto UPDATE_RATE = 120;
+  constexpr auto UPDATE_INTERVAL = (1000 / UPDATE_RATE);
+
+  State::State(SDL_Window* inWindow, SDL_GLContext inContext, vec2 size)
+      : window(inWindow), context(inContext), canvas(size, true)
+  {
+  }
+
+  void State::tick() { actor.tick(); }
+
+  void State::update()
+  {
+    SDL_Event event;
+
+    while (SDL_PollEvent(&event))
+    {
+      ImGui_ImplSDL3_ProcessEvent(&event);
+      if (event.type == SDL_EVENT_QUIT) isRunning = false;
+    }
+    if (!isRunning) return;
+
+    ImGui_ImplOpenGL3_NewFrame();
+    ImGui_ImplSDL3_NewFrame();
+    ImGui::NewFrame();
+
+    ImGui::Begin("Metrics");
+    ImGui::Text("Time: %f", actor.time);
+    ImGui::Text("IS Playing: %s", actor.isPlaying ? "true" : "false");
+
+    auto animation = actor.animation_get();
+    ImGui::Text("Animation: %s", animation ? animation->name.c_str() : "null");
+    ImGui::End();
+
+    ImGui::Render();
+  }
+
+  void State::render()
+  {
+    SDL_GL_MakeCurrent(window, context);
+
+    int width{};
+    int height{};
+    SDL_GetWindowSize(window, &width, &height);
+
+    canvas.bind();
+    canvas.clear(glm::vec4(0, 0, 0, 1));
+    actor.render(resources.shaders[shader::TEXTURE], canvas);
+    canvas.unbind();
+
+    ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+    SDL_GL_SwapWindow(window);
+  }
+
+  void State::loop()
+  {
+    auto currentTick = SDL_GetTicks();
+    auto currentUpdate = SDL_GetTicks();
+
+    if (currentUpdate - previousUpdate >= UPDATE_INTERVAL)
+    {
+      update();
+      render();
+      previousUpdate = currentUpdate;
+    }
+
+    if (currentTick - previousTick >= TICK_INTERVAL)
+    {
+      tick();
+      previousTick = currentTick;
+    }
+
+    SDL_Delay(1);
+  }
+}