Hello,

This forum is a bit quiet these days (as are most Delphi
forums). You may want to try the forum on the Pascal Game Development
website. They have a DelphiX section. The site address is here:
http://www.pascalgamedevelopment.com



Good luck with your game.



Ian







From: delphigames@yahoogroups.com [mailto:delphigames@yahoogroups.com]
On Behalf Of ericmort19
Sent: 26 May 2009 23:15
To: delphigames@yahoogroups.com
Subject: [DelphiGames] Re: DXTimer Problem








Thanks Igor but that would result in a very jerky movement. The sprites
need to move in small increments at frequent intervals to get smooth
movement. It's like a video, 10 frames per second and the video is
jerky, 25 FPS and it's smooth.
I have tracked this down to a problem with DirectX timers on some
Windows XP machines. Mine is one of them and although I can find plenty
of discussion about it I haven't come up with a fix. I have tested my
game on my old Win98SE machine, another XP machine, a Windows Vista
machine and even on Windows 7 Beta. It runs perfectly on all of them
(well the 98SE machine struggles a bit but still increments the speed
correctly) so the problem is not with my code and it's not compiled into
the exe.

It would be nice if someone has a fix.
Thanks

--- In delphigames@yahoogroups.com
<mailto:delphigames%40yahoogroups.com> , Igor Stojkovic
<stojkovic.igor@...> wrote:
>
> Maybe this wont be so helpful but...
>
> I would keep the running on max fps, and update game state at
> different speed. For example: instead of moving a sprite by 10pixels
> on every update and using fps to regulate how much pixels per second
> that amounts to, I would let the game run at max fps, but i would
> measure how much time passed since last update and move the sprite
> accordingly - 100ms passed and game is at slow so move it by 10px,
> 100ms passed and game is at fast so move it by 20px.
>
> On Tue, May 26, 2009 at 3:55 AM, ericmort19 <barberic19@...> wrote:
> >
> >
> > I am developing a game using UNDelphiX with Delphi 7 and have a
problem with
> > the DXTimer. The game has 10 game levels and 3 levels of difficulty.
> > The game speed should increase in a linear progression from 20 FPS
in Level
> > 1 Beginner to a max of 40 FPS in Level 10 Expert or whenever the 40
FPS is
> > achieved.
> > My code is this, where aDifficultyTime is a local variable and
FLevel is the
> > game level variable with a range of 1..10.
> >
> > // set game speed - runs at 20..40 FPS
> > case FDifficulty of
> > gd_Beginner: aDifficultyTime := 0;
> > gd_Advanced: aDifficultyTime := 5;
> > gd_Expert: aDifficultyTime := 10;
> > else aDifficultyTime := 0;
> > end;
> > DXTimer.Interval := 52 - aDifficultyTime - (FLevel*2);
> > if DXTimer.Interval < 25 then DXTimer.Interval := 25; // max 40 FPS
> >
> > The FPS output runs like this, starting at 16 FPS instead of 20 and
jumping
> > to 21, 24 and finally a max of 32 :-
> >
> > Level Beginner - 16 FPS. Should be 20.
> > Level Expert - 21 FPS. Should be 25.
> > Leve3 Beginner - 21 FPS. Should be 21.
> > Leve3 Expert - 21 FPS. Should be 27.
> > Leve5 Beginner - 21 FPS. Should be 24.
> > Leve5 Expert - 24 FPS. Should be 31.
> > Leve8 Beginner - 21 FPS. Should be 28.
> > Leve8 Expert - 32 FPS. Should be 38.
> > Leve10 Beginner - 21 FPS. Should be 31.
> > Leve10 Expert - 32 FPS. Should be 40.
> >
> > I ran the DX Diagnostics tool from Start>Run>dxdiag and that found
no
> > problems. Relevant sections of the report below. If I leave the
dxdiag
> > window open and run the game it behaves as it should with a gradual
increase
> > in speed as it progresses through the level. When I close the dxdiag
window
> > the timer resumes it's weird behavior.
> >
> > Please has anyone any ideas how to fix it.
> >
> > DX Diagnostics output report - relevant bits.
> > ------------------
> > System Information
> > ------------------
> > Time of this report: 5/26/2009, 10:22:48
> > Machine name: ERIC-XP3
> > Operating System: Windows XP Professional (5.1, Build 2600) Service
Pack 2
> > (2600.xpsp_sp2_rtm.040803-2158)
> > Language: English (Regional Setting: English)
> > System Manufacturer: GBT___
> > System Model: GBTUACPI
> > BIOS: Award Modular BIOS v6.00PG
> > Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 6000+, MMX,
3DNow (2
> > CPUs), ~3.0GHz
> > Memory: 2046MB RAM
> > Page File: 372MB used, 3566MB available
> > Windows Dir: C:\WINDOWS
> > DirectX Version: DirectX 9.0c (4.09.0000.0904)
> > DX Setup Parameters: Not found
> > DxDiag Version: 5.03.2600.2180 32bit Unicode
> >
> > ------------
> > DxDiag Notes
> > ------------
> > DirectX Files Tab: No problems found.
> > Display Tab 1: No problems found.
> > Sound Tab 1: No problems found.
> > Sound Tab 2: No problems found.
> > Sound Tab 3: No problems found.
> > Music Tab: No problems found.
> > Input Tab: No problems found.
> > Network Tab: No problems found.
> >
> > --------------------
> > DirectX Debug Levels
> > --------------------
> > Direct3D: 0/4 (n/a)
> > DirectDraw: 0/4 (retail)
> > DirectInput: 0/5 (n/a)
> > DirectMusic: 0/5 (n/a)
> > DirectPlay: 0/9 (retail)
> > DirectSound: 0/5 (retail)
> > DirectShow: 0/6 (retail)
> >
> > ---------------
> > Display Devices
> > ---------------
> > Card name: NVIDIA GeForce 7300 SE/7200 GS
> > Manufacturer: NVIDIA
> > Chip type: GeForce 7300 SE/7200 GS
> > DAC type: Integrated RAMDAC
> > Device Key: Enum\PCI\VEN_10DE&DEV_01D3&SUBSYS_82501043&REV_A1
> > Display Memory: 512.0 MB
> > Current Mode: 1024 x 768 (32 bit) (100Hz)
> > Monitor: Philips 109B50
> > Monitor Max Res: 1920,1440
> > Driver Name: nv4_disp.dll
> > Driver Version: 6.14.0011.6218 (English)
> > DDI Version: 9 (or higher)
> > Driver Attributes: Final Retail
> > Driver Date/Size: 6/29/2007 02:43:00, 5690624 bytes
> > WHQL Logo'd: n/a
> > WHQL Date Stamp: n/a
> > VDD: n/a
> > Mini VDD: nv4_mini.sys
> > Mini VDD Date: 6/29/2007 02:43:00, 6807328 bytes
> > Device Identifier: {D7B71E3E-4293-11CF-B96B-5BA200C2CB35}
> > Vendor ID: 0x10DE
> > Device ID: 0x01D3
> > SubSys ID: 0x82501043
> > Revision ID: 0x00A1
> > Revision ID: 0x00A1
> > Video Accel: ModeMPEG2_A ModeMPEG2_B ModeMPEG2_C ModeMPEG2_D
ModeWMV9_B
> > ModeWMV9_A
> > Deinterlace Caps: {6CB69578-7617-4637-91E5-1C02DB810285}:
> > Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0)
> > Caps=VideoProcess_YUV2RGB VideoProcess_StretchX
VideoProcess_StretchY
> > DeinterlaceTech_PixelAdaptive
> > {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2)
> > Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB
> > VideoProcess_StretchX VideoProcess_StretchY
> > DeinterlaceTech_BOBVerticalStretch
> > {6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(UYVY,YUY2)
> > Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB
> > VideoProcess_StretchX VideoProcess_StretchY
DeinterlaceTech_PixelAdaptive
> > {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,YUY2)
> > Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB
> > VideoProcess_StretchX VideoProcess_StretchY
> > DeinterlaceTech_BOBVerticalStretch
> > {6CB69578-7617-4637-91E5-1C02DB810285}:
Format(In/Out)=(YV12,0x3231564e)
> > Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB
> > VideoProcess_StretchX VideoProcess_StretchY
DeinterlaceTech_PixelAdaptive
> > {335AA36E-7884-43A4-9C91-7F87FAF3E37E}:
Format(In/Out)=(YV12,0x3231564e)
> > Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB
> > VideoProcess_StretchX VideoProcess_StretchY
> > DeinterlaceTech_BOBVerticalStretch
> > {6CB69578-7617-4637-91E5-1C02DB810285}:
Format(In/Out)=(NV12,0x3231564e)
> > Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB
> > VideoProcess_StretchX VideoProcess_StretchY
DeinterlaceTech_PixelAdaptive
> > {335AA36E-7884-43A4-9C91-7F87FAF3E37E}:
Format(In/Out)=(NV12,0x3231564e)
> > Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB
> > VideoProcess_StretchX VideoProcess_StretchY
> > DeinterlaceTech_BOBVerticalStretch
> > Registry: OK
> > DDraw Status: Enabled
> > D3D Status: Enabled
> > AGP Status: Enabled
> > DDraw Test Result: Not run // ran OK when tested
> > D3D7 Test Result: Not run // ran OK when tested
> > D3D8 Test Result: Not run // ran OK when tested
> > D3D9 Test Result: Not run // ran OK when tested
> >
> > -------------
> >
> >
>
>
>
> --
> Pozdrav,
> Igor Stojkovic mailto: stojkovic.igor@...
> Join new social network and get you share of the company at
> www.me2everyone.com/208754
>




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