beenull/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2024-09-30 08:41:15 +00:00
Code Issues Actions 5 Packages Projects Releases Wiki Activity

FlappyBug: Only paint areas which need to be painted

Browse source 
Drawing the entire PNG background is rather expensive. Instead, only
draw the rects that are updating.
This commit is contained in:
Timothy Flynn 2021-07-10 17:15:38 -04:00 committed by Andreas Kling
parent e2299b52de
commit dd65f52331
Notes: sideshowbarker 2024-07-18 09:22:21 +09:00 
Author: https://github.com/trflynn89
Commit: https://github.com/SerenityOS/serenity/commit/dd65f523316
Pull-request: https://github.com/SerenityOS/serenity/pull/8620
2 changed files with 17 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
Userland/Games/FlappyBug/Game.cpp
View file

@ -69,12 +69,12 @@ void Game::paint_event(GUI::PaintEvent& event)
painter.draw_scaled_bitmap(enclosing_int_rect(m_bug.rect()), *m_bug.current_bitmap(), m_bug.flapping_bitmap->rect());
if (m_active) {
painter.draw_text({ 10, 10, 100, 100 }, String::formatted("{:.0}", m_difficulty), Gfx::TextAlignment::TopLeft, Color::White);
painter.draw_text(m_score_rect, String::formatted("{:.0}", m_difficulty), Gfx::TextAlignment::TopLeft, Color::White);
} else if (m_high_score.has_value()) {
auto message = String::formatted("Your score: {:.0}\nHigh score: {:.0}\n\n{}", m_last_score, m_high_score.value(), m_restart_cooldown < 0 ? "Press any key to play again" : " ");
painter.draw_text(rect(), message, Gfx::TextAlignment::Center, Color::White);
painter.draw_text(m_text_rect, message, Gfx::TextAlignment::Center, Color::White);
} else {
painter.draw_text(rect(), "Press any key to start", Gfx::TextAlignment::Center, Color::White);
painter.draw_text(m_text_rect, "Press any key to start", Gfx::TextAlignment::Center, Color::White);
}
}
@ -97,7 +97,18 @@ void Game::keydown_event(GUI::KeyEvent& event)
void Game::tick()
{
auto queue_update = [&]() {
update(m_score_rect);
update(m_text_rect);
update(enclosing_int_rect(m_bug.rect()));
update(enclosing_int_rect(m_obstacle.top_rect()));
update(enclosing_int_rect(m_obstacle.bottom_rect()));
update(m_cloud.rect());
};
if (m_active) {
queue_update();
m_difficulty += 1.0f / 16.0f;
m_bug.fall();
@ -124,7 +135,7 @@ void Game::tick()
m_restart_cooldown -= 1.0f / 16.0f;
update();
queue_update();
}
}

2
Userland/Games/FlappyBug/Game.h
View file

@ -148,6 +148,8 @@ private:
float m_difficulty {};
float m_restart_cooldown {};
const RefPtr<Gfx::Bitmap> m_background_bitmap { Gfx::Bitmap::load_from_file("/res/icons/flappybug/background.png") };
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 };
};
}