{{=<% %>=}}#include <stdint.h>

#include "third_party/nugget/common/syscalls/syscalls.h"
#include "third_party/nugget/psyqo/application.hh"
#include "third_party/nugget/psyqo/font.hh"
#include "third_party/nugget/psyqo/gpu.hh"
#include "third_party/nugget/psyqo/scene.hh"

namespace {

// A PSYQo software needs to declare one \`Application\` object.
// This is the one we're going to do for our hello world.
class Hello final : public psyqo::Application {

    void prepare() override;
    void createScene() override;

  public:
    psyqo::Font<> m_font;
};

// And we need at least one scene to be created.
// This is the one we're going to do for our hello world.
class HelloScene final : public psyqo::Scene {
    void frame() override;

    // We'll have some simple animation going on, so we
    // need to keep track of our state here.
    uint8_t m_anim = 0;
    bool m_direction = true;
};

// We're instantiating the two objects above right now.
Hello hello;
HelloScene helloScene;

}  // namespace

void Hello::prepare() {
    psyqo::GPU::Configuration config;
    config.set(psyqo::GPU::Resolution::W320)
        .set(psyqo::GPU::VideoMode::AUTO)
        .set(psyqo::GPU::ColorMode::C15BITS)
        .set(psyqo::GPU::Interlace::PROGRESSIVE);
    gpu().initialize(config);
}

void Hello::createScene() {
    m_font.uploadSystemFont(gpu());
    pushScene(&helloScene);
}

void HelloScene::frame() {
    if (m_anim == 0) {
        m_direction = true;
    } else if (m_anim == 255) {
        m_direction = false;
    }
    psyqo::Color bg{{.r = 0, .g = 64, .b = 91}};
    bg.r = m_anim;
    hello.gpu().clear(bg);
    if (m_direction) {
        m_anim++;
    } else {
        m_anim--;
    }

    psyqo::Color c = {{.r = 255, .g = 255, .b = uint8_t(255 - m_anim)}};
    hello.m_font.print(hello.gpu(), "Hello World!", {{.x = 16, .y = 32}}, c);
}

int main() { return hello.run(); }