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#include "nes/app/application.hh"
#include "nes/app/input/input-device-keyboard.hh"
#include "nes/app/input/input-device-controller.hh"
#include "nes/app/ui/screen.hh"
#include "nes/app/graphics/renderer.hh"
#include "ui/action.hh"
#include <iostream>
namespace nes::app
{
auto application::display_proxy::switch_buffers() -> void
{
if (screen)
{
auto r = renderer{ base };
screen->render(r);
}
base.switch_buffers();
}
application::application(display& display, input_device_keyboard& keyboard, file_browser& file_browser)
: display_{ display }
, input_manager_{ keyboard }
, file_browser_{ file_browser }
, screen_title_{ keyboard }
, screen_browser_{ keyboard, file_browser }
{
display_.screen = &screen_title_;
}
auto application::frame(std::chrono::microseconds const elapsed_time) -> void
{
if (display_.screen)
{
auto const a = display_.screen->process_events();
handle_action(a);
}
if (console_)
{
console_->ref_controller_1().set_pressed(input_manager_.get_input_1().read_buttons());
console_->ref_controller_2().set_pressed(input_manager_.get_input_2().read_buttons());
// The scene is rendered by the console after the PPU requests a new frame (thus calling
// display_proxy::switch_buffers).
console_->step(elapsed_time);
if (console_->get_status() != status::success)
{
std::cerr << "Invalid state: " << to_string(console_->get_status()) << std::endl;
std::abort();
}
}
else
{
// Directly let the scene render itself without rendering any gameplay (the scene is responsible for
// clearing the buffer).
display_.switch_buffers();
}
}
auto application::handle_action(action const a) -> void
{
switch (a.get_type())
{
case action::type::none:
{
break;
}
case action::type::go_to_title:
{
console_.clear();
display_.screen = &screen_title_;
break;
}
case action::type::go_to_browser:
{
console_.clear();
display_.screen = &screen_browser_;
break;
}
case action::type::go_to_settings:
{
// TODO
break;
}
case action::type::go_to_help:
{
// TODO
break;
}
case action::type::launch_game:
{
u8 buffer[sys::cartridge::max_file_size];
auto length = u32{ 0 };
if (auto const s = file_browser_.load(a.get_file_name(), buffer, &length); s != status::success)
{
std::cerr << "Unable to open cartridge file: " << to_string(console_->get_status()) << std::endl;
std::abort();
}
console_.emplace(display_, span{ buffer, length });
if (console_->get_status() != status::success)
{
std::cerr << "Unable to load cartridge: " << to_string(console_->get_status()) << std::endl;
std::abort();
}
display_.screen = nullptr;
break;
}
case action::type::show_error:
{
// TODO
break;
}
}
}
} // namespace nes::app
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