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#pragma once
#include "nes/app/input/input-manager.hh"
#include "nes/app/ui/screen-title.hh"
#include "nes/app/ui/screen-browser.hh"
#include "nes/app/ui/screen-settings.hh"
#include "nes/app/ui/screen-help.hh"
#include "nes/app/ui/screen-freeze.hh"
#include "nes/app/ui/screen-error.hh"
#include "nes/app/ui/screen-confirm-quit.hh"
#include "nes/app/ui/screen-prompt-key.hh"
#include "nes/app/ui/screen-file-viewer.hh"
#include "nes/app/preferences.hh"
#include "nes/sys/nes.hh"
#include "nes/common/containers/box.hh"
#include "nes/common/display.hh"
#include "nes/common/fps-counter.hh"
#include "nes/common/types.hh"
namespace nes::app
{
class screen;
/// Entrypoint for the application.
///
/// This class takes care of presenting a UI screen or the emulator, handling any errors and implementing the main
/// application logic.
///
/// It delegates some platform-specific tasks to interfaces.
class application
{
/// Acts like a regular display, but renders a screen on top of the back buffer when requested to switch
/// buffers.
class display_proxy final : public display
{
preferences& preferences_;
rgb buffers_[2][display::width * display::height]{};
span<rgb, display::width * display::height> buffer_front_ = buffers_[0];
span<rgb, display::width * display::height> buffer_back_ = buffers_[1];
public:
fps_counter fps;
display& base;
screen* visible_popup{ nullptr };
screen* visible_screen{ nullptr };
explicit display_proxy(preferences& preferences, display& base)
: preferences_{ preferences }
, base{ base }
{
}
auto set(u32 const x, u32 const y, rgb const value) -> void override;
auto get_front() const -> span<rgb, display::width * display::height>;
auto switch_buffers() -> void override;
};
input_manager input_manager_;
preferences preferences_;
file_browser& file_browser_;
display_proxy display_;
box<sys::nes> console_{};
screen_title screen_title_;
screen_browser screen_browser_;
screen_settings screen_settings_;
screen_help screen_help_;
screen_freeze screen_freeze_;
screen_error screen_error_;
screen_confirm_quit screen_confirm_quit_;
screen_prompt_key screen_prompt_key_;
screen_file_viewer screen_file_viewer_;
public:
explicit application(display&, input_device_keyboard&, file_browser&);
application(application const&) = delete;
application(application&&) = delete;
auto operator=(application const&) -> application& = delete;
auto operator=(application&&) -> application& = delete;
/// Request a new frame for the application.
auto frame(u32 elapsed_time_us) -> void;
auto add_controller(input_device_controller& c) -> void { input_manager_.add_controller(c); }
auto remove_controller(input_device_controller& c) -> void { input_manager_.remove_controller(c); }
private:
auto handle_action(action const&) -> void;
auto show_error(string_view message, status error, action const& action = action::close_popup()) -> void;
auto go_to_screen(screen*) -> void;
};
} // namespace nes::app
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