[SA] Getting a car's tyre position

[rscaerzx]

Hi,

I wanted to know if it's possible to get a specific car's tyre position or offsets with CLEO script by reading memory addresses ? Perhaps even more parts like gas tanks and such. Something like this but able to access the offsets directly in-game: https://pastebin.com/rKDAhRkv

Thanks

[DK22Pac]

Yes, it's possible.

You should follow this logic:

 

 

CVector GetCarWheelOffset(CVehicle *vehicle, int componentId) {    if (vehicle->m_dwVehicleSubClass == VEHICLE_AUTOMOBILE) { // (vehicle +0x594) == 0        CAutomobile *car = reinterpret_cast<CAutomobile *>(vehicle);        if (car->m_aCarNodes[componentId]) { // (car +(0x648+4*componentId))            RwV3d *offset = &car->m_aCarNodes[componentId]->modelling.pos; // frame +0x40            return { offset->x, offset->y, offset->z }; // (vec +0x0, +0x4, +0x8)        }    }    return { 0.0f, 0.0f, 0.0f };}

Edited April 30, 2017 by DK22Pac

[rscaerzx]

Thank you, it works perfectly!

03C0: [email protected] = actor $PLAYER_ACTOR car0A97: [email protected] = car [email protected] struct000A: [email protected] += 0x6480006: [email protected] = 40012: [email protected] *= componentId005A: [email protected] += [email protected]  // (int)0A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 0000A: [email protected] += 0x400A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 0 // x000A: [email protected] += 0x40A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 0 // y000A: [email protected] += 0x40A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 0 // z0AD1: show_formatted_text_highpriority "Offsets: %f %f %f" time 5000 [email protected] [email protected] [email protected]

But how about bikes? I tried to read the xyz offsets just like above but it doesn't seem to work

• CBike + 0x5B0 = [dword] wheel_front Component (RwFrame)
• CBike + 0x5B4 = [dword] wheel_rear Component (RwFrame)
  

Also I've read your blogspot about the component ids http://dk22pac.blogspot.my/p/sa-hirerarchy-automobile.html I'd like to get the offsets of the petrol cap component but I believe it has a different structure. I would really appreciate if you could help me access the offsets.. thanks!

[DK22Pac]

Yes, bike wheels are placed inside other components in hierarchy, so you should additionally transform wheel offset by multiplying it with 'parent' matrices.

 

CVector GetBikeWheelPosition(CBike *bike, int componentId) {    if (bike->m_aBikeNodes[componentId]) { // (bike +0x5A0+4*componentId)        RwV3d offset = bike->m_aBikeNodes[componentId]->modelling.pos; // frame +0x40        RwFrame *parentNode = reinterpret_cast<RwFrame *>(bike->m_aBikeNodes[componentId]->object.parent); // (frame+0x4)        while (parentNode && parentNode->object.parent) {            RwV3dTransformPoint(&offset, &offset, &parentNode->modelling); // 0x7EDD60            parentNode = reinterpret_cast<RwFrame *>(parentNode->object.parent);        }        return { offset.x, offset.y, offset.z }; // (vec +0x0, +0x4, +0x8)    }    return { 0.0f, 0.0f, 0.0f };}

Bike components

 

I'd like to get the offsets of the petrol cap component but I believe it has a different structure. I would really appreciate if you could help me access the offsets.. thanks!

CVector GetVehicleDummyOffset(CVehicle *vehicle, int dummyId) {    CVehicleModelInfo *vehModel = reinterpret_cast<CVehicleModelInfo *>(CModelInfo::GetModelInfo(vehicle->m_wModelIndex)); // 0x403DA0    if (vehModel && vehModel->m_pVehicleStruct) // (vehModel +0x5C)        return vehModel->m_pVehicleStruct->m_avDummyPosn[dummyId]; // vehModelStruct +0x0+12*dummyId    return { 0.0f, 0.0f, 0.0f };}

Dummy IDs (CAutomobile)

 

 

 

0  headlights1  taillights2  headlights23  taillights24  ped_frontseat5  ped_backseat6  exhaust7  engine8  petrolcap9  hookup10 ped_arm11 miscpos_c12 miscpos_d13 miscpos_a14 miscpos_b

 

Dummy IDs (CBike)

 

 

 

0  headlights1  taillights2  headlights23  taillights24  ped_frontseat5  ped_backseat6  exhaust7  engine8  petrolcap9  hookup10 bargrip11 miscpos_a12 miscpos_b

 

Note: It's really necessary to check vehicle type before accessing components/dummies tables.

[rscaerzx]

Awesomee
Thank you so much

 

 

 

...const    componentId = 4 // BIKE_WHEEL_FRONT    dummyId = 8 // petrolcapend...03C0: [email protected] = actor $PLAYER_ACTOR car0A97: [email protected] = car [email protected] struct000A: [email protected] += 0x5A00006: [email protected] = 40012: [email protected] *= componentId005A: [email protected] += [email protected]  // (int)0A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 00085: [email protected] = [email protected] // (int)000A: [email protected] += 0x400A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 0000A: [email protected] += 0x40A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 0000A: [email protected] += 0x40A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 0        000A: [email protected] += 0x40A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 0000A: [email protected] += 0x100AA5: call_method 0x7EDD60 num_params 3 pop 3 [email protected] [email protected] [email protected]: show_formatted_text_highpriority "Wheel Offsets: %f %f %f" time 5000 [email protected] [email protected] [email protected]: [email protected] = car [email protected] model0AA7: call_function 0x403DA0 num_params 1 pop 1 [email protected] [email protected]: [email protected] += 0x5C0A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 00006: [email protected] = 120012: [email protected] *= dummyId005A: [email protected] += [email protected]  // (int) 0A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 0 // x000A: [email protected] += 0x40A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 0 // y000A: [email protected] += 0x40A8D: [email protected] = read_memory [email protected] size 4 virtual_protect 0 // z0AD1: show_formatted_text_highpriority "Petrolcap offsets: %f %f %f" time 5000 [email protected] [email protected] [email protected] 

 

 

 

 

Note: It's really necessary to check vehicle type before accessing components/dummies tables.

Alright I'll keep that in mind

Edited May 1, 2017 by rscaerzx