/* * Copyright (c) 2018-2020, Andreas Kling * Copyright (c) 2021, Mustafa Quraish * Copyright (c) 2022, the SerenityOS developers. * * SPDX-License-Identifier: BSD-2-Clause */ #include "Game.h" #include #include #include #include #include #include #include namespace Snake { ErrorOr> Game::create() { NonnullRefPtrVector food_bitmaps; food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F41F.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F95A.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F99C.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F986.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1FAB2.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F426.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F424.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F40D.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F989.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F54A.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F408.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F420.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F415.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F429.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F98C.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F416.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F401.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F400.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F407.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F43F.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F9A5.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F423.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F425.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F98E.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F997.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1FAB3.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1F413.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1FAB0.png"sv))); food_bitmaps.append(*TRY(Gfx::Bitmap::try_load_from_file("/res/emoji/U+1FAB1.png"sv))); return adopt_nonnull_ref_or_enomem(new (nothrow) Game(move(food_bitmaps))); } Game::Game(NonnullRefPtrVector food_bitmaps) : m_food_bitmaps(move(food_bitmaps)) { set_font(Gfx::FontDatabase::default_fixed_width_font().bold_variant()); reset(); m_high_score = Config::read_i32("Snake"sv, "Snake"sv, "HighScore"sv, 0); m_high_score_text = DeprecatedString::formatted("Best: {}", m_high_score); m_snake_base_color = Color::from_argb(Config::read_u32("Snake"sv, "Snake"sv, "BaseColor"sv, m_snake_base_color.value())); } void Game::pause() { stop_timer(); } void Game::start() { static constexpr int timer_ms = 100; start_timer(timer_ms); } void Game::reset() { m_head = { m_rows / 2, m_columns / 2 }; m_tail.clear_with_capacity(); m_length = 2; m_score = 0; m_score_text = "Score: 0"; m_is_new_high_score = false; m_velocity_queue.clear(); pause(); start(); spawn_fruit(); update(); } void Game::set_snake_base_color(Color color) { Config::write_u32("Snake"sv, "Snake"sv, "BaseColor"sv, color.value()); m_snake_base_color = color; } bool Game::is_available(Coordinate const& coord) { for (size_t i = 0; i < m_tail.size(); ++i) { if (m_tail[i] == coord) return false; } if (m_head == coord) return false; if (m_fruit == coord) return false; return true; } void Game::spawn_fruit() { Coordinate coord; for (;;) { coord.row = get_random_uniform(m_rows); coord.column = get_random_uniform(m_columns); if (is_available(coord)) break; } m_fruit = coord; m_fruit_type = get_random_uniform(m_food_bitmaps.size()); } Gfx::IntRect Game::score_rect() const { int score_width = font().width(m_score_text); return { frame_inner_rect().width() - score_width - 2, frame_inner_rect().height() - font().glyph_height() - 2, score_width, font().glyph_height() }; } Gfx::IntRect Game::high_score_rect() const { int high_score_width = font().width(m_high_score_text); return { frame_thickness() + 2, frame_inner_rect().height() - font().glyph_height() - 2, high_score_width, font().glyph_height() }; } void Game::timer_event(Core::TimerEvent&) { Vector dirty_cells; m_tail.prepend(m_head); if (m_tail.size() > m_length) { dirty_cells.append(m_tail.last()); m_tail.take_last(); } if (!m_velocity_queue.is_empty()) m_velocity = m_velocity_queue.dequeue(); dirty_cells.append(m_head); m_head.row += m_velocity.vertical; m_head.column += m_velocity.horizontal; m_last_velocity = m_velocity; if (m_head.row >= m_rows) m_head.row = 0; if (m_head.row < 0) m_head.row = m_rows - 1; if (m_head.column >= m_columns) m_head.column = 0; if (m_head.column < 0) m_head.column = m_columns - 1; dirty_cells.append(m_head); for (size_t i = 0; i < m_tail.size(); ++i) { if (m_head == m_tail[i]) { game_over(); return; } } if (m_head == m_fruit) { ++m_length; ++m_score; m_score_text = DeprecatedString::formatted("Score: {}", m_score); if (m_score > m_high_score) { m_is_new_high_score = true; m_high_score = m_score; m_high_score_text = DeprecatedString::formatted("Best: {}", m_high_score); update(high_score_rect()); Config::write_i32("Snake"sv, "Snake"sv, "HighScore"sv, m_high_score); } update(score_rect()); dirty_cells.append(m_fruit); spawn_fruit(); dirty_cells.append(m_fruit); } for (auto& coord : dirty_cells) { update(cell_rect(coord)); } } void Game::keydown_event(GUI::KeyEvent& event) { switch (event.key()) { case KeyCode::Key_A: case KeyCode::Key_Left: if (last_velocity().horizontal == 1) break; queue_velocity(0, -1); break; case KeyCode::Key_D: case KeyCode::Key_Right: if (last_velocity().horizontal == -1) break; queue_velocity(0, 1); break; case KeyCode::Key_W: case KeyCode::Key_Up: if (last_velocity().vertical == 1) break; queue_velocity(-1, 0); break; case KeyCode::Key_S: case KeyCode::Key_Down: if (last_velocity().vertical == -1) break; queue_velocity(1, 0); break; default: event.ignore(); break; } } Gfx::IntRect Game::cell_rect(Coordinate const& coord) const { auto game_rect = frame_inner_rect(); auto cell_size = Gfx::IntSize(game_rect.width() / m_columns, game_rect.height() / m_rows); return { game_rect.x() + coord.column * cell_size.width(), game_rect.y() + coord.row * cell_size.height(), cell_size.width(), cell_size.height() }; } void Game::paint_event(GUI::PaintEvent& event) { GUI::Frame::paint_event(event); GUI::Painter painter(*this); painter.add_clip_rect(frame_inner_rect()); painter.add_clip_rect(event.rect()); painter.fill_rect(event.rect(), Color::Black); painter.fill_rect(cell_rect(m_head), m_snake_base_color); for (auto& part : m_tail) { auto rect = cell_rect(part); painter.fill_rect(rect, m_snake_base_color.darkened(0.77)); Gfx::IntRect left_side(rect.x(), rect.y(), 2, rect.height()); Gfx::IntRect top_side(rect.x(), rect.y(), rect.width(), 2); Gfx::IntRect right_side(rect.right() - 1, rect.y(), 2, rect.height()); Gfx::IntRect bottom_side(rect.x(), rect.bottom() - 1, rect.width(), 2); painter.fill_rect(left_side, m_snake_base_color.darkened(0.88)); painter.fill_rect(right_side, m_snake_base_color.darkened(0.55)); painter.fill_rect(top_side, m_snake_base_color.darkened(0.88)); painter.fill_rect(bottom_side, m_snake_base_color.darkened(0.55)); } painter.draw_scaled_bitmap(cell_rect(m_fruit), m_food_bitmaps[m_fruit_type], m_food_bitmaps[m_fruit_type].rect()); painter.draw_text(high_score_rect(), m_high_score_text, Gfx::TextAlignment::TopLeft, Color::from_rgb(0xfafae0)); painter.draw_text(score_rect(), m_score_text, Gfx::TextAlignment::TopLeft, Color::White); } void Game::game_over() { stop_timer(); StringBuilder text; text.appendff("Your score was {}", m_score); if (m_is_new_high_score) { text.append("\nThat's a new high score!"sv); } GUI::MessageBox::show(window(), text.to_deprecated_string(), "Game Over"sv, GUI::MessageBox::Type::Information); reset(); } void Game::queue_velocity(int v, int h) { if (last_velocity().vertical == v && last_velocity().horizontal == h) return; m_velocity_queue.enqueue({ v, h }); } Game::Velocity const& Game::last_velocity() const { if (!m_velocity_queue.is_empty()) return m_velocity_queue.last(); return m_last_velocity; } }