From c4d8f11ded765f5f762b1b2bbf10fac952730bbe Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Fri, 18 Mar 2022 01:24:57 +0100
Subject: Fixed FPS counter

---
 Stars45/Clock.cpp       | 11 ++++++++++-
 Stars45/Clock.h         |  2 ++
 Stars45/Game.cpp        | 22 +---------------------
 Stars45/Game.h          |  6 ------
 Stars45/Mfd.cpp         |  2 +-
 Stars45/Starshatter.cpp |  4 ++--
 6 files changed, 16 insertions(+), 31 deletions(-)

(limited to 'Stars45')

diff --git a/Stars45/Clock.cpp b/Stars45/Clock.cpp
index 5315b99..03c2771 100644
--- a/Stars45/Clock.cpp
+++ b/Stars45/Clock.cpp
@@ -18,7 +18,8 @@ Clock::Clock() :
     m_real_elapsed {inner_clock::duration::zero()},
     m_compression {NO_COMPRESSION},
     m_delta {STARTING_DELTA},
-    m_gui_delta {STARTING_DELTA}
+    m_gui_delta {STARTING_DELTA},
+    m_rate {0.0}
 {
 }
 
@@ -43,6 +44,7 @@ Clock::Step()
     m_delta = seconds.count() * m_compression;
     m_gui_delta = seconds.count();
     m_point = next;
+    m_rate = 1 / m_gui_delta;
     return m_delta;
 }
 
@@ -77,6 +79,13 @@ Clock::GuiDelta() const
 
 
 double
+Clock::Rate() const
+{
+    return m_rate;
+}
+
+
+double
 Clock::TimeCompression() const
 {
     return m_compression;
diff --git a/Stars45/Clock.h b/Stars45/Clock.h
index 5628e45..512ee0f 100644
--- a/Stars45/Clock.h
+++ b/Stars45/Clock.h
@@ -26,6 +26,7 @@ public:
 
     double Delta() const;
     double GuiDelta() const;
+    double Rate() const;
     double TimeCompression() const;
     count_type GameTime() const;
     count_type RealTime() const;
@@ -39,6 +40,7 @@ protected:
     double m_compression;
     double m_delta;
     double m_gui_delta;
+    double m_rate;
 };
 
 
diff --git a/Stars45/Game.cpp b/Stars45/Game.cpp
index 2b38db7..c5c9ab8 100644
--- a/Stars45/Game.cpp
+++ b/Stars45/Game.cpp
@@ -38,8 +38,7 @@ const double MAX_FRAME_TIME_NORMAL  = 1.0 / 5.0;
 Game::Game()
     : world(0), video_factory(0), video(0), video_settings(0), soundcard(0),
       screen(0), totaltime(0),
-      hInst(0), hwnd(0), frame_rate(0), frame_count(0), frame_count0(0),
-      frame_time(0), frame_time0(0),
+      hInst(0), hwnd(0),
       status(Game::OK), exit_code(0), window_style(0)
 {
     if (!game) {
@@ -112,17 +111,6 @@ bool Game::IsWindowed()
 
 // +--------------------------------------------------------------------+
 
-double
-Game::FrameRate()
-{
-    if (game)
-    return game->frame_rate;
-
-    return 0;
-}
-
-// +--------------------------------------------------------------------+
-
 bool
 Game::Init(HINSTANCE hi, HINSTANCE hpi, LPSTR cmdline, int nCmdShow)
 {
@@ -614,16 +602,8 @@ Game::GetScreenHeight()
 void
 Game::CollectStats()
 {
-    frame_count++;
-
     if (!totaltime) totaltime = clock.RealTime();
 
-    if (frame_time - frame_time0 > 200) {
-        frame_rate   = (frame_count - frame_count0) * 1000.0 / (frame_time - frame_time0);
-        frame_time0  = frame_time;
-        frame_count0 = frame_count;
-    }
-
     if (video) {
         stats.nframe  = video->GetStats().nframe;
         stats.nverts  = video->GetStats().nverts;
diff --git a/Stars45/Game.h b/Stars45/Game.h
index 65963b1..8d30f42 100644
--- a/Stars45/Game.h
+++ b/Stars45/Game.h
@@ -71,7 +71,6 @@ public:
     Clock*            GetClock();
     DWORD             Frame();
 
-    double            FrameRate();
     void              SetMaxFrameLength(double seconds) { max_frame_length = seconds; }
     double            GetMaxFrameLength()               { return max_frame_length;    }
 
@@ -141,11 +140,6 @@ protected:
     RECT              client_rect;         // Saved client area size for mode switches
 
     Clock             clock;
-    double            frame_rate;
-    int               frame_count;
-    int               frame_count0;
-    int               frame_time;
-    int               frame_time0;
 
     int               status;
     int               exit_code;
diff --git a/Stars45/Mfd.cpp b/Stars45/Mfd.cpp
index 58a5a4d..cf50bd9 100644
--- a/Stars45/Mfd.cpp
+++ b/Stars45/Mfd.cpp
@@ -1087,7 +1087,7 @@ MFD::DrawGameMFD()
     int t = 0;
 
     if (!HUDView::IsArcade() && HUDView::ShowFPS()) {
-        sprintf_s(txt, "FPS: %6.2f", Game::GetInstance()->FrameRate());
+        sprintf_s(txt, "FPS: %6.2f", Game::GetInstance()->GetClock()->Rate());
         DrawMFDText(t++, txt, txt_rect, DT_LEFT);
         txt_rect.y += 10;
 
diff --git a/Stars45/Starshatter.cpp b/Stars45/Starshatter.cpp
index 28f1506..0e0f696 100644
--- a/Stars45/Starshatter.cpp
+++ b/Stars45/Starshatter.cpp
@@ -1484,7 +1484,7 @@ Starshatter::DoGameScreenFrame()
             }
         }
 
-        gamescreen->FrameRate(frame_rate);
+        gamescreen->FrameRate(Game::GetInstance()->GetClock()->Rate());
         gamescreen->ExecFrame();
 
         if (KeyDown(KEY_EXIT)) {
@@ -1564,7 +1564,7 @@ Starshatter::DoGameScreenFrame()
         DoGameKeys();
     }
 
-    gamescreen->FrameRate(frame_rate);
+    gamescreen->FrameRate(Game::GetInstance()->GetClock()->Rate());
     gamescreen->ExecFrame();
 
     if (Game::GetInstance()->GetClock()->GameTime() - time_mark > 60000) {
-- 
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