feat: add update speed limit

2 files changed, 22 insertions, 0 deletions

diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index fda1fc2..774220a 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -2,6 +2,7 @@
 
 #include "util/function.hpp"
 
+#include <chrono>
 #include <thread>
 #include <utility>
 
@@ -45,9 +46,28 @@ void CLIGameEngine::start() noexcept
 			_input_handler->listen();
 		}));
 
+	auto last_update_time = std::chrono::system_clock::now();
+
+	const auto get_millis_since_update = [&last_update_time]()
+	{
+		return std::chrono::duration_cast<std::chrono::milliseconds>(
+			std::chrono::system_clock::now() - last_update_time);
+	};
+
 	while (true)
 	{
+		const auto time_since_last_update = get_millis_since_update();
+
+		if (time_since_last_update.count() < MIN_TIME_SINCE_LAST_UPDATE_MILLIS)
+		{
+			while (get_millis_since_update().count() < MIN_TIME_SINCE_LAST_UPDATE_MILLIS)
+			{
+			}
+		}
+
 		game->on_update();
+
+		last_update_time = std::chrono::system_clock::now();
 	}
 }
 
diff --git a/src/engine/engine.hpp b/src/engine/engine.hpp
index 7b322b5..1e8a217 100644
--- a/src/engine/engine.hpp
+++ b/src/engine/engine.hpp
@@ -12,6 +12,8 @@
 #include <memory>
 #include <unordered_map>
 
+constexpr auto MIN_TIME_SINCE_LAST_UPDATE_MILLIS = 100;
+
 class CLIGameEngine : public ICLIGameEngine,
 					  public yacppdic::AutoWirable<
 						  ICLIGameEngine,