From fe451b8dc76caf87f09b120b9d57b7f4eff5d46c Mon Sep 17 00:00:00 2001
From: Patric Stout <truebrain@openttd.org>
Date: Fri, 26 Feb 2021 14:01:12 +0100
Subject: [PATCH] Codechange: remove _realtime_tick variable

---
 src/debug.cpp              |  2 --
 src/debug.h                |  3 ---
 src/video/video_driver.cpp | 15 ++++-----------
 src/video/video_driver.hpp |  1 -
 4 files changed, 4 insertions(+), 17 deletions(-)

diff --git a/src/debug.cpp b/src/debug.cpp
index e54d931ad0..034af755fd 100644
--- a/src/debug.cpp
+++ b/src/debug.cpp
@@ -45,8 +45,6 @@ int _debug_console_level;
 int _debug_random_level;
 #endif
 
-uint32 _realtime_tick = 0;
-
 struct DebugLevel {
 	const char *name;
 	int *level;
diff --git a/src/debug.h b/src/debug.h
index 1a0955b55b..29a7114aa0 100644
--- a/src/debug.h
+++ b/src/debug.h
@@ -121,7 +121,4 @@ void CDECL ShowInfoF(const char *str, ...) WARN_FORMAT(1, 2);
 
 const char *GetLogPrefix();
 
-/** The real time in the game. */
-extern uint32 _realtime_tick;
-
 #endif /* DEBUG_H */
diff --git a/src/video/video_driver.cpp b/src/video/video_driver.cpp
index bc9d28ff00..d528bbec7f 100644
--- a/src/video/video_driver.cpp
+++ b/src/video/video_driver.cpp
@@ -20,17 +20,6 @@ bool VideoDriver::Tick()
 {
 	auto cur_ticks = std::chrono::steady_clock::now();
 
-	/* If more than a millisecond has passed, increase the _realtime_tick. */
-	if (cur_ticks - this->last_realtime_tick > std::chrono::milliseconds(1)) {
-		auto delta = std::chrono::duration_cast<std::chrono::milliseconds>(cur_ticks - this->last_realtime_tick);
-		_realtime_tick += delta.count();
-		this->last_realtime_tick += delta;
-
-		/* Keep the interactive randomizer a bit more random by requesting
-		 * new values when-ever we can. */
-		InteractiveRandom();
-	}
-
 	if (cur_ticks >= this->next_game_tick || (_fast_forward && !_pause_mode)) {
 		if (_fast_forward && !_pause_mode) {
 			this->next_game_tick = cur_ticks + this->GetGameInterval();
@@ -60,6 +49,10 @@ bool VideoDriver::Tick()
 		/* Avoid next_draw_tick getting behind more and more if it cannot keep up. */
 		if (this->next_draw_tick < cur_ticks - ALLOWED_DRIFT * this->GetDrawInterval()) this->next_draw_tick = cur_ticks;
 
+		/* Keep the interactive randomizer a bit more random by requesting
+		 * new values when-ever we can. */
+		InteractiveRandom();
+
 		while (this->PollEvent()) {}
 		this->InputLoop();
 		::InputLoop();
diff --git a/src/video/video_driver.hpp b/src/video/video_driver.hpp
index 67c8064bcf..2e478def99 100644
--- a/src/video/video_driver.hpp
+++ b/src/video/video_driver.hpp
@@ -276,7 +276,6 @@ protected:
 		return std::chrono::microseconds(1000000 / _settings_client.gui.refresh_rate);
 	}
 
-	std::chrono::steady_clock::time_point last_realtime_tick;
 	std::chrono::steady_clock::time_point next_game_tick;
 	std::chrono::steady_clock::time_point next_draw_tick;
 };