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/*
* Copyright (c) 2021, Mim Hufford <mim@hotmail.co.uk>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Optional.h>
#include <AK/Random.h>
#include <AK/Vector.h>
#include <LibGUI/Application.h>
#include <LibGUI/Frame.h>
#include <LibGUI/Painter.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Font.h>
#include <LibGfx/StandardCursor.h>
namespace FlappyBug {
class Game final : public GUI::Frame {
C_OBJECT(Game);
public:
static const int game_width = 560;
static const int game_height = 480;
Function<u32(u32)> on_game_end;
private:
virtual void paint_event(GUI::PaintEvent&) override;
virtual void keydown_event(GUI::KeyEvent&) override;
virtual void mousedown_event(GUI::MouseEvent&) override;
virtual void timer_event(Core::TimerEvent&) override;
void tick();
void reset();
void game_over();
bool ready_to_start() const;
void player_input();
public:
struct Bug {
const float x { 50 };
const float radius { 16 };
const float starting_y { 200 };
NonnullRefPtr<Gfx::Bitmap> falling_bitmap;
NonnullRefPtr<Gfx::Bitmap> flapping_bitmap;
float y {};
float velocity {};
private:
Bug(NonnullRefPtr<Gfx::Bitmap> falling_bitmap_value, NonnullRefPtr<Gfx::Bitmap> flapping_bitmap_value)
: falling_bitmap(move(falling_bitmap_value))
, flapping_bitmap(move(flapping_bitmap_value))
{
}
public:
static ErrorOr<Bug> construct()
{
NonnullRefPtr<Gfx::Bitmap> falling_bitmap = TRY(Gfx::Bitmap::try_load_from_file("/res/icons/flappybug/falling.png"));
NonnullRefPtr<Gfx::Bitmap> flapping_bitmap = TRY(Gfx::Bitmap::try_load_from_file("/res/icons/flappybug/flapping.png"));
return Bug(move(falling_bitmap), move(flapping_bitmap));
}
void reset()
{
y = starting_y;
}
RefPtr<Gfx::Bitmap> current_bitmap() const
{
return velocity < 0 ? falling_bitmap : flapping_bitmap;
}
Gfx::FloatRect rect() const
{
return { x - radius, y - radius, radius * 2, radius * 2 };
}
void flap()
{
const float flap_strength = 10.0f;
velocity = -flap_strength;
}
void fall()
{
const float gravity = 1.0f;
velocity += gravity;
}
void apply_velocity()
{
y += velocity;
}
};
struct Obstacle {
const float width { 20 };
Color color { Color::DarkGray };
float x {};
float gap_top_y { 200 };
float gap_height { 175 };
void reset()
{
x = game_width + width;
gap_top_y = get_random_uniform(game_height - gap_height);
}
Gfx::FloatRect top_rect() const
{
return { x - width, 0, width, gap_top_y };
}
Gfx::FloatRect bottom_rect() const
{
return { x - width, gap_top_y + gap_height, width, game_height - gap_top_y - gap_height };
}
};
struct Cloud {
Vector<NonnullRefPtr<Gfx::Bitmap>> const cloud_bitmaps {
Gfx::Bitmap::try_load_from_file("/res/icons/flappybug/cloud_0.png").release_value_but_fixme_should_propagate_errors(),
Gfx::Bitmap::try_load_from_file("/res/icons/flappybug/cloud_1.png").release_value_but_fixme_should_propagate_errors(),
Gfx::Bitmap::try_load_from_file("/res/icons/flappybug/cloud_2.png").release_value_but_fixme_should_propagate_errors(),
};
float x {};
float y {};
int bitmap_id {};
Cloud()
{
reset();
x = get_random_uniform(game_width);
}
void reset()
{
bitmap_id = get_random_uniform(cloud_bitmaps.size());
x = game_width + bitmap()->width();
y = get_random_uniform(game_height / 2) + bitmap()->height();
}
RefPtr<Gfx::Bitmap> bitmap() const
{
return cloud_bitmaps[bitmap_id];
}
Gfx::IntRect rect() const
{
return { (int)x - bitmap()->width(), (int)y - bitmap()->height(), bitmap()->width(), bitmap()->height() };
}
};
private:
Bug m_bug;
Obstacle m_obstacle;
Cloud m_cloud;
bool m_active;
Optional<float> m_high_score {};
float m_last_score {};
float m_difficulty {};
float m_restart_cooldown {};
NonnullRefPtr<Gfx::Bitmap> m_background_bitmap { Gfx::Bitmap::try_load_from_file("/res/icons/flappybug/background.png").release_value_but_fixme_should_propagate_errors() };
const Gfx::IntRect m_score_rect { 10, 10, 20, 20 };
const Gfx::IntRect m_text_rect { game_width / 2 - 80, game_height / 2 - 40, 160, 80 };
Game(Bug);
};
}
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