From f725e598935860d15099a0310a3aef7197a58e9c Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Mon, 7 Mar 2022 23:56:54 +0100
Subject: Replaced old integrated clock with new one

The interface remains unchanged for now, but changing to use GetClock
or similar method to get clock owned by the Game instance is preferred.
---
 Stars45/Game.cpp | 84 ++++++++++++++++----------------------------------------
 1 file changed, 23 insertions(+), 61 deletions(-)

(limited to 'Stars45/Game.cpp')

diff --git a/Stars45/Game.cpp b/Stars45/Game.cpp
index 6d91489..92937e6 100644
--- a/Stars45/Game.cpp
+++ b/Stars45/Game.cpp
@@ -25,26 +25,21 @@
 #include "VideoFactory.h"
 #include "VideoSettings.h"
 #include "ContentBundle.h"
+#include "Clock.h"
 
 // +--------------------------------------------------------------------+
 
 Game*    game           = 0;
 
-const int    VIDEO_FPS              = 30;
-const double MAX_FRAME_TIME_VIDEO   = 1.0 / (double) VIDEO_FPS;
 const double MAX_FRAME_TIME_NORMAL  = 1.0 / 5.0;
 
-static LARGE_INTEGER  perf_freq;
-static LARGE_INTEGER  perf_cnt1;
-static LARGE_INTEGER  perf_cnt2;
-
 // +--------------------------------------------------------------------+
 
 Game::Game()
     : world(0), video_factory(0), video(0), video_settings(0), soundcard(0),
       gamma(128), max_tex_size(2048), screen(0), totaltime(0),
       hInst(0), hwnd(0), frame_rate(0), frame_count(0), frame_count0(0),
-      frame_time(0), frame_time0(0), gui_seconds(0),
+      frame_time(0), frame_time0(0),
       status(Game::OK), exit_code(0), window_style(0)
 {
     if (!game) {
@@ -54,9 +49,6 @@ Game::Game()
         paused         = false;
         server         = false;
         show_mouse     = false;
-        real_time      = 0;
-        game_time      = 0;
-        time_comp      = 1;
         frame_number   = 0;
 
         max_frame_length = MAX_FRAME_TIME_NORMAL;
@@ -194,7 +186,7 @@ double
 Game::FrameTime()
 {
     if (game)
-    return game->seconds;
+    return game->GetClock()->Delta();
 
     return 0;
 }
@@ -203,7 +195,7 @@ double
 Game::GUITime()
 {
     if (game)
-    return game->gui_seconds;
+    return game->GetClock()->GuiDelta();
 
     return 0;
 }
@@ -317,10 +309,6 @@ Game::InitInstance(HINSTANCE hInstance, int nCmdShow)
 {
     hInst = hInstance;
 
-    // initialize the game timer:
-    QueryPerformanceFrequency(&perf_freq);
-    QueryPerformanceCounter(&perf_cnt1);
-
     // center window on display:
     int   screenx  = GetSystemMetrics(SM_CXSCREEN);
     int   screeny  = GetSystemMetrics(SM_CYSCREEN);
@@ -765,6 +753,7 @@ Game::Run()
     Print("+====================================================================+\n");
 
     // Polling messages from event queue until quit
+    clock.Set();
     while (status < EXIT || Panic::Panicked()) {
         if (PeekMessage(&msg, hwnd, 0, 0, PM_REMOVE)) {
             if (msg.message == WM_QUIT)
@@ -849,24 +838,9 @@ Game::GameLoop()
         Pause(false);
     }
 
-    QueryPerformanceCounter(&perf_cnt2);
-
-    double freq = (double) (perf_freq.QuadPart);
-    double msec = (double) (perf_cnt2.QuadPart - perf_cnt1.QuadPart);
-
-    msec /= freq;
-    msec *= 1000.0;
-
-    if (msec < 1)
-    msec = 1;
-
-    real_time += (DWORD) msec;
-
+    clock.Step();
     frame_number++;
     Mouse::w = 0;
-
-    perf_cnt1 = perf_cnt2;
-
     return wait_for_windows_events;
 }
 
@@ -875,26 +849,8 @@ Game::GameLoop()
 void
 Game::UpdateWorld()
 {
-    long   new_time      = real_time;
-    double delta         = new_time - frame_time;
-    gui_seconds   = delta * 0.001;
-    seconds       = max_frame_length;
-
-    if (time_comp == 1)
-    {
-        if (delta < max_frame_length * 1000)
-        seconds = delta * 0.001;
-    }
-    else
-    {
-        seconds = time_comp * delta * 0.001;
-    }
-
-    frame_time = new_time;
-    game_time += (DWORD) (seconds * 1000);
-
     if (world)
-    world->ExecFrame(seconds);
+    world->ExecFrame(clock.Delta());
 }
 
 // +--------------------------------------------------------------------+
@@ -972,7 +928,7 @@ Game::CollectStats()
 {
     frame_count++;
 
-    if (!totaltime) totaltime = real_time;
+    if (!totaltime) totaltime = clock.RealTime();
 
     if (frame_time - frame_time0 > 200) {
         frame_rate   = (frame_count - frame_count0) * 1000.0 / (frame_time - frame_time0);
@@ -1000,7 +956,7 @@ Game::ShowStats()
 {
     if (server) return;
 
-    totaltime = real_time - totaltime;
+    totaltime = clock.RealTime() - totaltime;
 
     Print("\n");
     Print("Performance Data:\n");
@@ -1282,34 +1238,40 @@ GetKeyPlus(int& key, int& shift)
 
 // +====================================================================+
 
+Clock*
+Game::GetClock()
+{
+    return &clock;
+}
+
+
 DWORD GetRealTime()
 {
     Game* game = Game::GetInstance();
     if (game)
     return game->RealTime();
-
-    return timeGetTime();
+    return 0;
 }
 
 DWORD Game::RealTime()
 {
-    return real_time;
+    return clock.RealTime();
 }
 
 DWORD Game::GameTime()
 {
-    return game_time;
+    return clock.GameTime();
 }
 
 DWORD Game::TimeCompression()
 {
-    return time_comp;
+    return clock.TimeCompression();
 }
 
 void Game::SetTimeCompression(DWORD comp)
 {
     if (comp > 0 && comp <= 100)
-    time_comp = comp;
+    clock.SetTimeCompression(static_cast<double>(comp));
 }
 
 DWORD Game::Frame()
@@ -1319,11 +1281,11 @@ DWORD Game::Frame()
 
 void Game::ResetGameTime()
 {
-    game_time = 0;
+    clock.ResetGameTime();
 }
 
 void Game::SkipGameTime(double seconds)
 {
     if (seconds > 0)
-    game_time += (DWORD) (seconds * 1000);
+    clock.SkipGameTime(seconds);
 }
-- 
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