Files
entt/testbed/application/application.cpp
2025-04-11 18:16:03 +02:00

91 lines
2.0 KiB
C++

#include <cstdint>
#include <SDL3/SDL.h>
#include <application/application.h>
#include <application/context.h>
#include <backends/imgui_impl_sdl3.h>
#include <backends/imgui_impl_sdlrenderer3.h>
#include <entt/entity/registry.hpp>
#include <imgui.h>
#include <system/imgui_system.h>
#include <system/rendering_system.h>
namespace testbed {
void application::update(entt::registry &registry) {
ImGui_ImplSDLRenderer3_NewFrame();
ImGui_ImplSDL3_NewFrame();
ImGui::NewFrame();
// update...
static_cast<void>(registry);
}
void application::draw(entt::registry &registry, const context &context) const {
SDL_SetRenderDrawColor(context, 0u, 0u, 0u, SDL_ALPHA_OPAQUE);
SDL_RenderClear(context);
rendering_system(registry, context);
imgui_system(registry);
ImGui::Render();
ImGuiIO &io = ImGui::GetIO();
SDL_SetRenderScale(context, io.DisplayFramebufferScale.x, io.DisplayFramebufferScale.y);
ImGui_ImplSDLRenderer3_RenderDrawData(ImGui::GetDrawData(), context);
SDL_RenderPresent(context);
}
void application::input() {
ImGuiIO &io = ImGui::GetIO();
SDL_Event event{};
while(SDL_PollEvent(&event)) {
ImGui_ImplSDL3_ProcessEvent(&event);
switch(event.type) {
case SDL_EVENT_KEY_DOWN:
switch(event.key.key) {
case SDLK_ESCAPE:
quit = true;
break;
}
break;
}
}
}
application::application()
: quit{} {
SDL_Init(SDL_INIT_EVENTS | SDL_INIT_VIDEO);
}
application::~application() {
SDL_Quit();
}
static void static_setup_for_dev_purposes(entt::registry &registry) {
const auto entt = registry.create();
registry.emplace<double>(entt, 1.2);
registry.emplace<int>(entt, 3);
}
int application::run() {
entt::registry registry{};
context context{};
static_setup_for_dev_purposes(registry);
quit = false;
while(!quit) {
update(registry);
draw(registry, context);
input();
}
return 0;
}
} // namespace testbed