From 448dd1cd013cc69b4af5084f6c011a611034f960 Mon Sep 17 00:00:00 2001
From: pogokeen <pogokeen@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Thu, 2 Aug 2018 07:53:09 +0000
Subject: [PATCH] screens.cpp: Show average game update time over the last 100
 game updates

git-svn-id: https://svn.eduke32.com/eduke32@6963 1a8010ca-5511-0410-912e-c29ae57300e0
---
 source/duke3d/src/game.cpp    | 3 +++
 source/duke3d/src/global.cpp  | 2 ++
 source/duke3d/src/global.h    | 2 ++
 source/duke3d/src/screens.cpp | 2 +-
 4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/source/duke3d/src/game.cpp b/source/duke3d/src/game.cpp
index 91e86d598..44835b5c4 100644
--- a/source/duke3d/src/game.cpp
+++ b/source/duke3d/src/game.cpp
@@ -6770,6 +6770,9 @@ MAIN_LOOP_RESTART:
 
             gameUpdate = true;
             g_gameUpdateTime = timerGetTicks()-gameUpdateStartTime;
+            if (g_gameUpdateAvgTime < 0.f)
+                g_gameUpdateAvgTime = g_gameUpdateTime;
+            g_gameUpdateAvgTime = ((GAMEUPDATEAVGTIMENUMSAMPLES-1.f)*g_gameUpdateAvgTime+g_gameUpdateTime)/((float) GAMEUPDATEAVGTIMENUMSAMPLES);
         }
 
         G_DoCheats();
diff --git a/source/duke3d/src/global.cpp b/source/duke3d/src/global.cpp
index 3e02eeb09..50f9e6ec0 100644
--- a/source/duke3d/src/global.cpp
+++ b/source/duke3d/src/global.cpp
@@ -90,6 +90,8 @@ int32_t g_gametypeFlags[MAXGAMETYPES] =
     GAMETYPE_TDMSPAWN,
 };
 
+float g_gameUpdateAvgTime = -1.f;
+
 int32_t g_actorRespawnTime   = 768;
 int32_t g_bouncemineRadius   = 2500;
 int32_t g_deleteQueueSize    = 64;
diff --git a/source/duke3d/src/global.h b/source/duke3d/src/global.h
index 3f4274a96..1c542abf3 100644
--- a/source/duke3d/src/global.h
+++ b/source/duke3d/src/global.h
@@ -163,6 +163,8 @@ G_EXTERN uint32_t everyothertime;
 G_EXTERN uint32_t g_moveThingsCount;
 G_EXTERN uint32_t g_gameUpdateTime;
 G_EXTERN uint32_t g_gameUpdateAndDrawTime;
+#define GAMEUPDATEAVGTIMENUMSAMPLES 100
+extern float g_gameUpdateAvgTime;
 
 #ifndef global_c_
 extern char CheatKeys[2];
diff --git a/source/duke3d/src/screens.cpp b/source/duke3d/src/screens.cpp
index a8bbe664a..629bb9874 100644
--- a/source/duke3d/src/screens.cpp
+++ b/source/duke3d/src/screens.cpp
@@ -837,7 +837,7 @@ static void G_PrintFPS(void)
                 printext256(windowxy2.x-(chars<<(3-x)), windowxy1.y+30+FPS_YOFFSET,
                     FPS_COLOR(g_gameUpdateAndDrawTime >= SLOW_FRAME_TIME), -1, tempbuf, x);
 
-                chars = Bsprintf(tempbuf, "Min Game Update: %2d ms Max Game Update: %2d ms", minGameUpdate, maxGameUpdate);
+                chars = Bsprintf(tempbuf, "Min GU: %2d ms Max GU: %2d ms Avg GU: %5.2f ms", minGameUpdate, maxGameUpdate, g_gameUpdateAvgTime);
 
                 printext256(windowxy2.x-(chars<<(3-x))+1, windowxy1.y+40+2+FPS_YOFFSET, 0, -1, tempbuf, x);
                 printext256(windowxy2.x-(chars<<(3-x)), windowxy1.y+40+FPS_YOFFSET,