feat: add ability to change generation speed

3 files changed, 26 insertions, 10 deletions

diff --git a/src/game/game.cpp b/src/game/game.cpp
index 8ea6571..9d8c246 100644
--- a/src/game/game.cpp
+++ b/src/game/game.cpp
@@ -34,7 +34,9 @@ void Game::on_start() noexcept
 	_status_manager->set_section_title(StatusLineSection::C, "Y: ");
 	_status_manager->set_section_title(StatusLineSection::D, "Paused: ");
 	_status_manager->set_section_title(StatusLineSection::E, "Generation: ");
-	_status_manager->set_section_title(StatusLineSection::F, "Time since last frame: ");
+	_status_manager->set_section_title(
+		StatusLineSection::F,
+		"Minimum time since last generation: ");
 	_status_manager->set_section_title(StatusLineSection::G, "Living cells: ");
 	_status_manager->set_section_title(StatusLineSection::H, "Window size: ");
 
@@ -150,6 +152,17 @@ void Game::on_update() noexcept
 		is_generation_stepping = true;
 		break;
 
+	case '+':
+		if (_min_time_since_last_gen_millis > 0)
+		{
+			_min_time_since_last_gen_millis -= MIN_TIME_SINCE_LAST_GEN_INCREMENT;
+		}
+		break;
+
+	case '-':
+		_min_time_since_last_gen_millis += MIN_TIME_SINCE_LAST_GEN_DECREMENT;
+		break;
+
 	default:
 		break;
 	}
@@ -167,29 +180,27 @@ void Game::on_update() noexcept
 			fmt::format("{}", current_pos.get_y()));
 	}
 
-	const auto time_now = std::chrono::system_clock::now();
-
-	const auto time_since_last_update = time_now - _last_update_time;
-
 	_status_manager->set_section_body(
 		StatusLineSection::F,
-		fmt::format("{} nanoseconds", time_since_last_update.count()));
+		fmt::format("{} milliseconds", _min_time_since_last_gen_millis));
 
 	_status_manager->set_section_body(
 		StatusLineSection::G,
 		fmt::format("{}", _living_cell_positions.size()));
 
+	const auto time_now = std::chrono::system_clock::now();
+
 	if (_generation_tracker->get_is_paused() && !is_generation_stepping)
 	{
 		_last_update_time = time_now;
 		return;
 	}
 
-	const auto time_since_last_gen_update =
+	const auto time_since_last_gen =
 		std::chrono::duration_cast<std::chrono::milliseconds>(
 			time_now - _last_gen_update_time);
 
-	if (time_since_last_gen_update.count() <= GENERATION_UPDATE_SPEED_MILLIS)
+	if (time_since_last_gen.count() <= _min_time_since_last_gen_millis)
 	{
 		_last_update_time = time_now;
 		return;
diff --git a/src/game/game.hpp b/src/game/game.hpp
index 7e43c7c..b5b69cf 100644
--- a/src/game/game.hpp
+++ b/src/game/game.hpp
@@ -16,7 +16,10 @@
 #include <list>
 #include <memory>
 
-constexpr auto GENERATION_UPDATE_SPEED_MILLIS = 200;
+constexpr auto DEFAULT_MIN_TIME_SINCE_LAST_GEN_MILLIS = 200;
+
+constexpr auto MIN_TIME_SINCE_LAST_GEN_INCREMENT = 50;
+constexpr auto MIN_TIME_SINCE_LAST_GEN_DECREMENT = 50;
 
 class Game : public IGame
 {
@@ -48,6 +51,8 @@ private:
 	TimePoint _last_update_time;
 	TimePoint _last_gen_update_time;
 
+	int32_t _min_time_since_last_gen_millis = DEFAULT_MIN_TIME_SINCE_LAST_GEN_MILLIS;
+
 	std::list<Vector2> _living_cell_positions;
 
 	void _move_cursor(const Vector2 &direction) noexcept;
diff --git a/src/game/status_manager.cpp b/src/game/status_manager.cpp
index 4c189b9..3f2df01 100644
--- a/src/game/status_manager.cpp
+++ b/src/game/status_manager.cpp
@@ -17,7 +17,7 @@ void StatusManager::initialize() noexcept
 	_statusline->set_section_length(StatusLineSection::C, 15U);
 	_statusline->set_section_length(StatusLineSection::D, 20U);
 	_statusline->set_section_length(StatusLineSection::E, 25U);
-	_statusline->set_section_length(StatusLineSection::F, 50U);
+	_statusline->set_section_length(StatusLineSection::F, 60U);
 	_statusline->set_section_length(StatusLineSection::G, 30U);
 	_statusline->set_section_length(StatusLineSection::H, 30U);