[Sweet]

I was posted that on SB forum but nobody respond to it, so i post it there.
In sources, guess what, i found these:

CODE

bool CVehicleSA::IsSphereTouchingVehicle ( CVector * vecOrigin, float fRadius )
{
  DEBUG_TRACE("bool CVehicleSA::IsSphereTouchingVehicle ( CVector * vecOrigin, float fRadius )");
    DWORD dwThis = (DWORD) m_pInterface;
    DWORD dwFunc = FUNC_CVehicle_IsSphereTouchingVehicle;
  bool bReturn = false;

    _asm
    {
    push  eax

        mov     ecx, dwThis
    mov    eax, vecOrigin
    push  fRadius
        push    dword ptr [eax]
        push    dword ptr [eax + 4]
        push    dword ptr [eax + 8]
    call  dwFunc
    mov    bReturn, al
    }
  return bReturn;
}

Is there a way to move this on delphi for creating opcode "is_car_visible"? Or way to find out current entity target of the camera. Any answers will be helpful!

[Silent]

Is car visible == is set_car_visibility opcode set to 0?
I'm not sure if you're asking that, or just you want to create condition, that will return true if car is on screen?

[Sweet]

Is car really entity target of camera, it means on screen, even if player stand near car but camera isnt looking at car.

[Silent]

SANNY

02CA:   car 61@ bounding_sphere_visible

?


Nah, I don't think that you're a noob

This post has been edited by Silent: Oct 4 2010, 06:35 PM

[Sweet]

Oh jesus... I KNOW THAT!
I talking about not that opcode, i talking about camera's target_entity check.

[Silent]

Okies, so I'm out - I have no knowlege about these things :/

[Sweet]

Same as on sanny's forum. I posted that about month ago and still no answers :/
Nobody's research the camera as well.

This post has been edited by Sweet: Oct 5 2010, 04:26 PM

[Deji]

You want the ASM for that opcode check, yes?

Not so many ASM users here, I'm not so good with this either. You could make a call to CCamera__isSphereVisible (0x420D40), which is something like what I'd do in CLEO. It would be much easier for me to attempt to recreate an "are coordinates visible" function than an "is car visible" one...

Here's an off-the-top attempt. This code will probably be mostly wrong, but it's better than nothing, I'd say.

CODE

function AreCoordsOnscreen(origin: float[3], fRadius: float):  bool;  // complete guess, probably wrong.
{
  var
    dwFunc, dwThis: Integer;
    bReturn: Boolean;
  begin
    //dwThis := m_pInterface;  // ??? m_pInterface should be a constant. It's value is probably needed.
    dwFunc := $420D40;

    // correct asm structure?
    asm
        push  eax   // don't know what this does

        //mov     ecx, dwThis  // no idea what it does or how it's involved, but it could be needed for this to work.
        mov     eax, origin
        push    fRadius
        push    dword ptr [eax]
        push    dword ptr [eax + 4]
        push    dword ptr [eax + 8]
        call    dwFunc
        mov     bReturn, al
    end
  return bReturn;  // replace with however you return from a function in Delphi - return the value of "bReturn".
}

The ASM is considerably basic, but I have no experience with Pascal or Delphi. It'd help to see some examples of working with SA functions/asm in it.

I'm also wondering where you got that snippet from. It might help to see more of that, too. dwThis probably needs to refer to where the returned data should be directed to, but I'm not sure.


Let me know if you get it working, I'm always interested in working with ASM

[Sweet]

Its piece from SA sources, but not listener's. Its s0beit sources (or MTA, whatever). As Far As I Know its directly from CVehicle.cpp (in src folder).