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// SPDX-License-Identifier: BSD-2-Clause
// Copyright (c) 2025 Kirill Dmitrievich
// File: main_menu.cc
// Description: Main menu screen
#include "client/pch.hh"
#include "client/gui/main_menu.hh"
#include "core/math/constexpr.hh"
#include "core/resource/resource.hh"
#include "core/version.hh"
#include "client/gui/gui_screen.hh"
#include "client/gui/imutils_button.hh"
#include "client/gui/imutils_popup.hh"
#include "client/gui/language.hh"
#include "client/io/keyboard.hh"
#include "client/resource/texture_gui.hh"
#include "client/globals.hh"
#include "client/session.hh"
static std::string str_button_play;
static std::string str_button_resume;
static std::string str_button_settings;
static std::string str_button_disconnect;
static std::string str_button_quit;
static std::string str_quit_popup_title;
static std::string str_quit_popup_question;
static std::string str_quit_popup_choices[2];
static void on_key(const KeyEvent& event)
{
if(session::is_ingame() && event.is_keycode(GLFW_KEY_ESCAPE) && event.is_action(GLFW_PRESS)) {
if(globals::gui_screen == GUI_SCREEN_NONE) {
globals::gui_screen = GUI_MAIN_MENU;
return;
}
if(globals::gui_screen == GUI_MAIN_MENU) {
globals::gui_screen = GUI_SCREEN_NONE;
return;
}
}
}
static void on_language_set(const LanguageSetEvent& event)
{
str_button_play = language::resolve_gui("main_menu.button.play");
str_button_resume = language::resolve_gui("main_menu.button.resume");
str_button_settings = language::resolve("main_menu.button.settings");
str_button_disconnect = language::resolve("main_menu.button.disconnect");
str_button_quit = language::resolve("main_menu.button.quit");
str_quit_popup_title = language::resolve_gui("main_menu.quit_popup.title");
str_quit_popup_question = language::resolve("main_menu.quit_popup.question");
str_quit_popup_choices[0] = language::resolve_gui("main_menu.quit_popup.choice.yes");
str_quit_popup_choices[1] = language::resolve_gui("main_menu.quit_popup.choice.no");
}
void main_menu::init(void)
{
globals::dispatcher.sink<KeyEvent>().connect<&on_key>();
globals::dispatcher.sink<LanguageSetEvent>().connect<&on_language_set>();
}
void main_menu::shutdown(void)
{
// empty
}
void main_menu::layout(void)
{
const auto viewport = ImGui::GetMainViewport();
const auto& viewport_size = viewport->Size;
ImVec2 margin(globals::gui_scale * 8.0f, globals::gui_scale * 8.0f);
ImVec2 control(globals::gui_scale * 256.0f, globals::gui_scale * 32.0f);
ImGui::SetNextWindowPos({});
ImGui::SetNextWindowSize(viewport_size);
ImGuiWindowFlags flags = 0U;
flags |= ImGuiWindowFlags_NoBackground;
flags |= ImGuiWindowFlags_NoDecoration;
if(!ImGui::Begin("###gui::main_menu", nullptr, flags)) {
ImGui::End();
return;
}
ImGui::PushFont(globals::font_unscii16, 16.0f);
ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.000f, 0.000f, 0.000f, 0.000f));
ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(0.500f, 0.500f, 0.500f, 0.125f));
ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(0.500f, 0.500f, 0.500f, 0.500f));
ImGui::PushStyleVarX(ImGuiStyleVar_FramePadding, 16.0f * globals::gui_scale);
ImGui::PushStyleVarX(ImGuiStyleVar_ButtonTextAlign, 0.0f);
ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 0.0f);
ImVec2 cursor_pos(margin.x, viewport_size.y - margin.y);
cursor_pos.y -= control.y * 1.5f;
ImGui::SetCursorPos(cursor_pos);
if(session::is_ingame()) {
imutils::button(str_button_disconnect.c_str(), control, [] {
session::disconnect("protocol.client_disconnect");
});
}
else {
imutils::button(str_button_quit.c_str(), control, [] {
ImGui::OpenPopup(str_quit_popup_title.c_str());
});
}
cursor_pos.y -= control.y;
ImGui::SetCursorPos(cursor_pos);
imutils::button(str_button_settings.c_str(), control, [] {
globals::gui_screen = GUI_SETTINGS;
});
cursor_pos.y -= control.y * 1.5f;
ImGui::SetCursorPos(cursor_pos);
if(session::is_ingame()) {
imutils::button(str_button_resume.c_str(), control, [] {
globals::gui_screen = GUI_SCREEN_NONE;
});
}
else {
imutils::button(str_button_play.c_str(), control, [] {
globals::gui_screen = GUI_PLAY_MENU;
});
}
ImGui::PopStyleVar(3);
ImGui::PopStyleColor(3);
ImGui::PopFont();
if(0 == imutils::popup(str_quit_popup_title, str_quit_popup_question, str_quit_popup_choices, 2)) {
// We don't really have a good way to
// pass "i want to quit" boolean to the main loop,
// so instead we just raise an external interrupt signal
// which handler latches an internal flag in the main loop
std::raise(SIGINT);
}
ImGui::End();
}
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