Class determination

**F a w k e s** · 20.01.2021 22:37

Hello everyone,
I am hoping someone can help with this topic - how can I determine what properties belong to which class? Is there any 'how to' section in forum ?
So far I was able to figure out bits and pieces only by reading of offsets from pointers and based on that I tried to figure out, whether this new pointers point to vtbl of some object or not --> this is very inefficient, is there a better way? thank you!

**Bisasam** · 20.01.2021 22:50

Not sure if I got you right, but Ikarus comes with EngineClasses.d where every class with characteristics is listed.
LeGo comes with several class definitions too. Like oCNpc.d etc. Very helpful.

**F a w k e s** · 22.01.2021 11:59

Hello Bisasam, everyone,
Apologies, I was not clear enough

I would like to understand how can one determine class definition from scratch.

For example class zCEventMessage which is not available in Ikarus/LeGo.

I know that there is a class hierarchy in Gothic (you can get it from Marvin console F2 zlist classtree, or below for G1

)

Code:

*** Enumerating class Hierarchy (#168) *** .... <zObject.cpp,#210>
 - zCObject .... <zObject.cpp,#244>
     - oCNpcTalent [objs 2571] [ctor 2571] .... <zObject.cpp,#244>
     - oCSavegameInfo [objs 17] [ctor 17] .... <zObject.cpp,#244>
     - oCSpell [objs 1] [ctor 1] .... <zObject.cpp,#244>
     - zCAIBase [objs 1] [ctor 3] .... <zObject.cpp,#244>
         - oCAICamera .... <zObject.cpp,#244>
         - oCAIHuman_Stand .... <zObject.cpp,#244>
         - oCAISound .... <zObject.cpp,#244>
             - oCAIArrowBase .... <zObject.cpp,#244>
                 - oCAIArrow .... <zObject.cpp,#244>
             - oCAIDrop .... <zObject.cpp,#244>
             - oCAIVobMove .... <zObject.cpp,#244>
                 - oCAIVobMoveTorch .... <zObject.cpp,#244>
         - zCAIBaseSound .... <zObject.cpp,#244>
         - zCAICamera [objs 1] [ctor 2] .... <zObject.cpp,#244>
         - zCAIPlayer .... <zObject.cpp,#244>
             - oCAniCtrl_Human .... <zObject.cpp,#244>
                 - oCAIHuman [objs 2] [ctor 2] .... <zObject.cpp,#244>
     - zCArchiver .... <zObject.cpp,#244>
         - zCArchiverBinSafe [ctor 2] .... <zObject.cpp,#244>
         - zCArchiverGeneric [ctor 823] .... <zObject.cpp,#244>
     - zCCSBlockBase .... <zObject.cpp,#244>
         - zCCSAtomicBlock [objs 13179] [ctor 13179] .... <zObject.cpp,#244>
         - zCCSBlock [objs 13180] [ctor 13180] .... <zObject.cpp,#244>
             - zCCSSyncBlock .... <zObject.cpp,#244>
             - zCCutscene .... <zObject.cpp,#244>
                 - zCCSCutsceneContext [ctor 6] .... <zObject.cpp,#244>
     - zCCSLib [objs 1] [ctor 1] .... <zObject.cpp,#244>
     - zCCSManager .... <zObject.cpp,#244>
         - oCCSManager [objs 1] [ctor 1] .... <zObject.cpp,#244>
     - zCCSPlayer .... <zObject.cpp,#244>
         - oCCSPlayer [objs 1] [ctor 4] .... <zObject.cpp,#244>
     - zCCSPoolItem .... <zObject.cpp,#244>
     - zCCSProps [ctor 6] .... <zObject.cpp,#244>
         - oCCSProps .... <zObject.cpp,#244>
     - zCCSRole .... <zObject.cpp,#244>
     - zCEventManager [objs 508] [ctor 628] .... <zObject.cpp,#244>
         - zCNetEventManager .... <zObject.cpp,#244>
     - zCEventMessage .... <zObject.cpp,#244>
         - oCMobMsg .... <zObject.cpp,#244>
         - oCNpcMessage .... <zObject.cpp,#244>
             - oCMsgAttack .... <zObject.cpp,#244>
             - oCMsgConversation [objs 13185] [ctor 13221] .... <zObject.cpp,#244>
             - oCMsgDamage .... <zObject.cpp,#244>
             - oCMsgMagic .... <zObject.cpp,#244>
             - oCMsgManipulate [ctor 1] .... <zObject.cpp,#244>
             - oCMsgMovement [objs 2] [ctor 17] .... <zObject.cpp,#244>
             - oCMsgState [objs 1] [ctor 3] .... <zObject.cpp,#244>
             - oCMsgUseItem .... <zObject.cpp,#244>
             - oCMsgWeapon .... <zObject.cpp,#244>
         - zCCSCamera_EventMsg [ctor 6] .... <zObject.cpp,#244>
         - zCCSCamera_EventMsgActivate [ctor 81] .... <zObject.cpp,#244>
         - zCEvMsgCutscene [ctor 12] .... <zObject.cpp,#244>
         - zCEventCommon .... <zObject.cpp,#244>
         - zCEventCore [ctor 1] .... <zObject.cpp,#244>
         - zCEventMover .... <zObject.cpp,#244>
         - zCEventMusicControler .... <zObject.cpp,#244>
         - zCEventScreenFX [ctor 1] .... <zObject.cpp,#244>
     - zCLensFlareFX [objs 7] [ctor 7] [hash 0.006836] .... <zObject.cpp,#244>
     - zCLightMap [objs 1910] [ctor 1910] .... <zObject.cpp,#244>
     - zCMaterial [objs 3633] [ctor 3660] [hash 0.9648] .... <zObject.cpp,#244>
     - zCModelAni [objs 1577] [ctor 1577] .... <zObject.cpp,#244>
     - zCModelMeshLib [objs 2] [ctor 2] [hash 0.001953] .... <zObject.cpp,#244>
     - zCNetManager .... <zObject.cpp,#244>
     - zCNetVobControl .... <zObject.cpp,#244>
     - zCObjectFactory [ctor 1] .... <zObject.cpp,#244>
         - oCObjectFactory [objs 1] [ctor 1] .... <zObject.cpp,#244>
     - zCResource .... <zObject.cpp,#244>
         - zCSoundFX [objs 19] [ctor 26] [hash 0] .... <zObject.cpp,#244>
         - zCTexture [objs 1269] [ctor 1277] [hash 0.6719] .... <zObject.cpp,#244>
     - zCSkyControler .... <zObject.cpp,#244>
         - zCSkyControler_Mid .... <zObject.cpp,#244>
             - zCSkyControler_Indoor [objs 1] [ctor 2] .... <zObject.cpp,#244>
             - zCSkyControler_Outdoor [objs 1] [ctor 3] .... <zObject.cpp,#244>
     - zCTextureFileFormat .... <zObject.cpp,#244>
         - zCTextureFileFormatInternal [ctor 188] .... <zObject.cpp,#244>
         - zCTextureFileFormatTGA .... <zObject.cpp,#244>
     - zCVertexBuffer [objs 190] [ctor 190] .... <zObject.cpp,#244>
     - zCViewObject .... <zObject.cpp,#244>
         - zCViewDraw [objs 1] [ctor 1] .... <zObject.cpp,#244>
             - zCViewFX .... <zObject.cpp,#244>
                 - zCViewPrint .... <zObject.cpp,#244>
                     - zCViewDialog .... <zObject.cpp,#244>
                         - oCViewDialogInventory [objs 1] [ctor 1] .... <zObject.cpp,#244>
                         - oCViewDialogItem .... <zObject.cpp,#244>
                         - oCViewDialogItemContainer [objs 2] [ctor 2] .... <zObject.cpp,#244>
                         - oCViewDialogStealContainer [objs 1] [ctor 1] .... <zObject.cpp,#244>
                         - oCViewDialogTrade [objs 1] [ctor 1] .... <zObject.cpp,#244>
                         - zCViewDialogChoice [objs 3] [ctor 3] .... <zObject.cpp,#244>
     - zCVisual .... <zObject.cpp,#244>
         - zCDecal [objs 523] [ctor 523] .... <zObject.cpp,#244>
         - zCMesh [objs 24] [ctor 41] .... <zObject.cpp,#244>
         - zCParticleFX [objs 339] [ctor 339] .... <zObject.cpp,#244>
         - zCPolyStrip [ctor 16] .... <zObject.cpp,#244>
         - zCProgMeshProto [objs 699] [ctor 700] [hash 0.4131] .... <zObject.cpp,#244>
             - zCMeshSoftSkin [objs 7] [ctor 7] .... <zObject.cpp,#244>
         - zCQuadMark [ctor 1] .... <zObject.cpp,#244>
         - zCVisualAnimate .... <zObject.cpp,#244>
             - zCModel [objs 1664] [ctor 1664] .... <zObject.cpp,#244>
             - zCMorphMesh [objs 305] [ctor 307] .... <zObject.cpp,#244>
     - zCVob [objs 9563] [ctor 9564] .... <zObject.cpp,#244>
         - oCDummyVobGenerator .... <zObject.cpp,#244>
         - oCVob .... <zObject.cpp,#244>
             - oCItem [objs 4275] [ctor 4303] .... <zObject.cpp,#244>
             - oCMOB [objs 1] [ctor 1] .... <zObject.cpp,#244>
                 - oCMobInter [objs 534] [ctor 534] .... <zObject.cpp,#244>
                     - oCMobBed [objs 10] [ctor 10] .... <zObject.cpp,#244>
                     - oCMobFire [objs 238] [ctor 238] .... <zObject.cpp,#244>
                     - oCMobItemSlot .... <zObject.cpp,#244>
                     - oCMobLadder [objs 73] [ctor 73] .... <zObject.cpp,#244>
                     - oCMobLockable .... <zObject.cpp,#244>
                         - oCMobContainer [objs 325] [ctor 325] .... <zObject.cpp,#244>
                         - oCMobDoor [objs 305] [ctor 305] .... <zObject.cpp,#244>
                     - oCMobSwitch [objs 9] [ctor 9] .... <zObject.cpp,#244>
                     - oCMobWheel [objs 10] [ctor 10] .... <zObject.cpp,#244>
             - oCNpc [objs 1194] [ctor 1194] .... <zObject.cpp,#244>
         - zCCSCamera [objs 8] [ctor 48] .... <zObject.cpp,#244>
         - zCCamTrj_KeyFrame [objs 16] [ctor 96] .... <zObject.cpp,#244>
         - zCEffect .... <zObject.cpp,#244>
             - oCVisualFX [objs 1] [ctor 3] [hash 0] .... <zObject.cpp,#244>
                 - oCVisFX_Lightning .... <zObject.cpp,#244>
                 - oCVisFX_MultiTarget .... <zObject.cpp,#244>
             - zCEarthquake .... <zObject.cpp,#244>
             - zCMusicControler .... <zObject.cpp,#244>
             - zCPFXControler [objs 2] [ctor 2] .... <zObject.cpp,#244>
             - zCTouchAnimate .... <zObject.cpp,#244>
                 - zCTouchAnimateSound .... <zObject.cpp,#244>
             - zCTouchDamage .... <zObject.cpp,#244>
                 - oCTouchDamage .... <zObject.cpp,#244>
             - zCVobAnimate [objs 164] [ctor 164] .... <zObject.cpp,#244>
             - zCVobLensFlare [objs 178] [ctor 178] .... <zObject.cpp,#244>
             - zCVobScreenFX [objs 9] [ctor 9] .... <zObject.cpp,#244>
         - zCTriggerBase .... <zObject.cpp,#244>
             - zCCodeMaster .... <zObject.cpp,#244>
             - zCMessageFilter .... <zObject.cpp,#244>
             - zCMoverControler .... <zObject.cpp,#244>
             - zCTrigger .... <zObject.cpp,#244>
                 - oCCSTrigger [objs 1] [ctor 1] .... <zObject.cpp,#244>
                 - oCTriggerChangeLevel [objs 6] [ctor 6] .... <zObject.cpp,#244>
                 - oCTriggerScript [objs 25] [ctor 25] .... <zObject.cpp,#244>
                 - zCMover [objs 41] [ctor 41] .... <zObject.cpp,#244>
                 - zCTriggerList [objs 1] [ctor 1] .... <zObject.cpp,#244>
                 - zCTriggerTeleport .... <zObject.cpp,#244>
             - zCTriggerUntouch .... <zObject.cpp,#244>
             - zCTriggerWorldStart .... <zObject.cpp,#244>
         - zCVobLevelCompo [ctor 6] .... <zObject.cpp,#244>
         - zCVobLight [objs 965] [ctor 965] .... <zObject.cpp,#244>
         - zCVobSpot [objs 2240] [ctor 2240] .... <zObject.cpp,#244>
         - zCVobStair [objs 11] [ctor 11] .... <zObject.cpp,#244>
         - zCVobStartpoint [objs 1] [ctor 1] .... <zObject.cpp,#244>
         - zCVobWaypoint .... <zObject.cpp,#244>
         - zCZone .... <zObject.cpp,#244>
             - oCZoneMusic [objs 39] [ctor 39] .... <zObject.cpp,#244>
                 - oCZoneMusicDefault [objs 1] [ctor 1] .... <zObject.cpp,#244>
             - zCVobSound [objs 518] [ctor 518] .... <zObject.cpp,#244>
                 - zCVobSoundDaytime [objs 92] [ctor 92] .... <zObject.cpp,#244>
             - zCZoneMusic .... <zObject.cpp,#244>
             - zCZoneReverb .... <zObject.cpp,#244>
                 - zCZoneReverbDefault .... <zObject.cpp,#244>
             - zCZoneVobFarPlane [objs 2] [ctor 2] .... <zObject.cpp,#244>
                 - zCZoneVobFarPlaneDefault [objs 1] [ctor 1] .... <zObject.cpp,#244>
             - zCZoneZFog [objs 2] [ctor 2] .... <zObject.cpp,#244>
                 - zCZoneZFogDefault [objs 1] [ctor 1] .... <zObject.cpp,#244>
     - zCVobLightPreset [objs 10] [ctor 10] .... <zObject.cpp,#244>
     - zCWayNet [objs 1] [ctor 6] .... <zObject.cpp,#244>
     - zCWaypoint [objs 3537] [ctor 3537] .... <zObject.cpp,#244>
     - zCWorld [ctor 1] .... <zObject.cpp,#244>
         - oCWorld [objs 1] [ctor 1] .... <zObject.cpp,#244>
*********************************** .... <zObject.cpp,#254>

And from this hierarchy I understand that zCEventMessage is extension of zCObject (which is available in Ikarus).
Now I would like to understand how can I get to zCEventMessage.properties:

Code:

class zCEventMessage {
//class zCObject {
    var int    _vtbl;          // 0x0000
    var int    refCtr;         // 0x0004 int
    var int    hashIndex;      // 0x0008 zWORD
    var int    hashNext;       // 0x000C zCObject*
    var string objectName;     // 0x0010 zSTRING
//}

    //zCEventMessage properties offset 36
                               // 0x0024
    ...
};

What I was doing so far to figure out was very ... cumbersome ... I was reading out content from offset of the object:

Code:

var int ptr;
ptr = MEM_ReadInt (_@ (zCEventMessage) + 36);

And based on the value guessing what property it is. I figured out that next property for zCEventMessage is varint subType;. (name 'subType' - deducted ... after a trial & error while playing with other event manager functions, where I found out that oCMsgConversation::MD_GetSubTypeString will give me based on number stored in subType name of current event ... it's a long story)

But there must be a better way !

Spoiler:(zum lesen bitte Text markieren)

Meanwhile I found an alternative which is good enough for a moment - where I can leverage from Union GitHub content and put together probably all classes in zEngine.
But ... I would like to understand how for example SektenSpinner, Mud-Freak or Lehona figured classes out

I will put together notes here on how I am leveraging from Union GitHub content later on.

**neocromicon** · 22.01.2021 12:25

Mean you this? https://wiki.worldofgothic.de/doku.p...ngineforschung

**Kirides** · 22.01.2021 12:40

Zitat von F a w k e s

...

Spoiler:(zum lesen bitte Text markieren)

Meanwhile I found an alternative which is good enough for a moment - where I can leverage from Union GitHub content and put together probably all classes in zEngine.
But ... I would like to understand how for example SektenSpinner, Mud-Freak or Lehona figured classes out

I will put together notes here on how I am leveraging from Union GitHub content later on.

That's how i get my class declarations nowadays aswell.
Except in the rare case of some bitfields, the code almost maps 1-to-1

**N1kX** · 22.01.2021 13:22

Or you can view all the fields of a class from Union and create a class based on Ikarus.

Example
Gothic_II_Addon\Api\zEventMan.h

https://github.com/UnresolvedExterna...scUtils/ZenGin

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