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Stabilized main loop.

Browse source 
Cherry picked timeBeginPeriod.
Ref PR #85.
This commit is contained in:
Muzychenko Andrey 2021-11-11 18:03:23 +03:00
parent c29acb12d0
commit ec13bca129
4 changed files with 64 additions and 59 deletions
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6
SpaceCadetPinball/pb.cpp
View file

@ -225,12 +225,15 @@ void pb::ballset(int x, int y)
ball->Speed = maths::normalize_2d(&ball->Acceleration);
}
int pb::frame(int time)
void pb::frame(int time)
{
static int frameTime = 0;
if (time > 100)
time = 100;
if (time <= 0)
return;
float timeMul = time * 0.001f;
if (!mode_countdown(time))
{
@ -284,7 +287,6 @@ int pb::frame(int time)
MainTable->tilt(time_now);
}
}
return 1;
}
void pb::timed_frame(float timeNow, float timeDelta, bool drawBalls)

2
SpaceCadetPinball/pb.h
View file

@ -26,7 +26,7 @@ public:
static void toggle_demo();
static void replay_level(int demoMode);
static void ballset(int x, int y);
static int frame(int time);
static void frame(int time);
static void timed_frame(float timeNow, float timeDelta, bool drawBalls);
static void window_size(int* width, int* height);
static void pause_continue();

110
SpaceCadetPinball/winmain.cpp
View file

@ -12,6 +12,8 @@
#include "splash.h"
#include "render.h"
const int TargetFrameTime = 8;
HINSTANCE winmain::hinst = nullptr;
HWND winmain::hwnd_frame = nullptr;
HCURSOR winmain::mouse_hsave;
@ -28,8 +30,6 @@ int winmain::last_mouse_y;
int winmain::mouse_down;
int winmain::no_time_loss;
DWORD winmain::then;
DWORD winmain::now;
UINT winmain::iFrostUniqueMsg;
bool winmain::restart = false;
@ -51,6 +51,10 @@ int winmain::WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
options::ReadOptions();
auto regSpaceCadet = pinball::get_rc_string(166, 0);
// Needed for sub 16ms sleep
if (timeBeginPeriod(1) == TIMERR_NOERROR)
atexit(ResetTimer);
if (options::get_int(regSpaceCadet, "Table Version", 1) <= 1)
{
auto tmpBuf = memory::allocate(0x1F4u);
@ -221,7 +225,7 @@ int winmain::WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
pb::replay_level(0);
DWORD someTimeCounter = 300u, prevTime = 0u;
then = timeGetTime();
int sleepRemainder = 0, frameDuration = TargetFrameTime;
while (true)
{
if (!someTimeCounter)
@ -259,68 +263,64 @@ int winmain::WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
if (has_focus)
{
if (mouse_down)
if (mouse_down && frameDuration >= 2)
{
now = timeGetTime();
if (now - then >= 2)
{
/*last_mouse_n is in client coordinates*/
POINT Point;
GetCursorPos(&Point);
ScreenToClient(hwnd_frame, &Point);
pb::ballset(last_mouse_x - Point.x, Point.y - last_mouse_y);
Point = POINT{last_mouse_x, last_mouse_y};
ClientToScreen(hwnd_frame, &Point);
SetCursorPos(Point.x, Point.y);
}
/*last_mouse_n is in client coordinates*/
POINT Point;
GetCursorPos(&Point);
ScreenToClient(hwnd_frame, &Point);
pb::ballset(last_mouse_x - Point.x, Point.y - last_mouse_y);
Point = POINT{ last_mouse_x, last_mouse_y };
ClientToScreen(hwnd_frame, &Point);
SetCursorPos(Point.x, Point.y);
}
if (!single_step)
{
now = timeGetTime();
if (no_time_loss)
{
then = now;
no_time_loss = 0;
}
if (now == then)
{
Sleep(8u);
}
else
{
auto dt = now - then;
auto frameStart = timeGetTime();
auto dt = frameDuration;
if (!no_time_loss)
pb::frame(dt);
else
no_time_loss = 0;
if (DispGRhistory)
if (DispGRhistory)
{
auto width = render::vscreen.Width / 2;
auto height = 64;
if (!gfr_display.BmpBufPtr1)
{
auto width = render::vscreen.Width / 2;
auto height = 64;
if (!gfr_display.BmpBufPtr1)
{
gdrv::create_bitmap(&gfr_display, width, height);
}
gdrv::ScrollBitmapHorizontal(&gfr_display, -1);
auto target = 8.0f;
auto scale = height / target / 2;
gdrv::fill_bitmap(&gfr_display, 1, height, width - 1, 0, 0); // Background
auto targetVal = dt < target ? dt : target;
auto targetHeight = min(static_cast<int>(std::round(targetVal * scale)), height);
gdrv::fill_bitmap(&gfr_display, 1, targetHeight, width - 1, height - targetHeight, -1); // Target
auto diffVal = dt < target ? target - dt : dt - target;
auto diffHeight = min(static_cast<int>(std::round(diffVal * scale)), height);
gdrv::fill_bitmap(&gfr_display, 1, diffHeight, width - 1, height - targetHeight - diffHeight, 1); // Target diff
gdrv::blit(&gfr_display, 0, 0, render::vscreen.Width - width, 0, width, height);
gdrv::create_bitmap(&gfr_display, width, height);
}
--someTimeCounter;
then = now;
gdrv::ScrollBitmapHorizontal(&gfr_display, -1);
float target = TargetFrameTime;
auto scale = height / target / 2;
gdrv::fill_bitmap(&gfr_display, 1, height, width - 1, 0, 0); // Background
auto targetVal = dt < target ? dt : target;
auto targetHeight = min(static_cast<int>(std::round(targetVal * scale)), height);
gdrv::fill_bitmap(&gfr_display, 1, targetHeight, width - 1, height - targetHeight, -1); // Target
auto diffVal = dt < target ? target - dt : dt - target;
auto diffHeight = min(static_cast<int>(std::round(diffVal * scale)), height);
gdrv::fill_bitmap(&gfr_display, 1, diffHeight, width - 1, height - targetHeight - diffHeight, 1); // Target diff
gdrv::blit(&gfr_display, 0, 0, render::vscreen.Width - width, 0, width, height);
}
auto updateEnd = timeGetTime();
auto sleepDuration = TargetFrameTime - (int)(updateEnd - frameStart) - sleepRemainder;
if (sleepDuration > 0)
Sleep(sleepDuration);
auto frameEnd = timeGetTime();
sleepRemainder = (frameEnd - updateEnd) - sleepDuration;
frameDuration = min(frameEnd - frameStart, TargetFrameTime * 2);
--someTimeCounter;
}
}
}

5
SpaceCadetPinball/winmain.h
View file

@ -26,11 +26,14 @@ public:
private:
static int return_value, bQuit, DispFrameRate, DispGRhistory, activated;
static int has_focus, mouse_down, last_mouse_x, last_mouse_y, no_time_loss;
static DWORD then, now;
static UINT iFrostUniqueMsg;
static gdrv_bitmap8 gfr_display;
static HCURSOR mouse_hsave;
static bool restart;
static HDC _BeginPaint(HWND hWnd, LPPAINTSTRUCT lpPaint);
static void ResetTimer()
{
timeEndPeriod(1u);
}
};