Raydium 3D Game Engine

Howto get world position of created object?

Hello,

Object are "space" that handle several element. Each element have his own position within the space/object. This usefull to speed up collision detections.

It's better to get element pos of an revelant element of your object.

I can't add raydium_ode_object_pos_get, because i can't chose which element position i have to report.

Is it clear ? I hope so ...

Have a nice day.

Ouille

OK. I understand.

But then question is, why when is created object with this:

int a=raydium_ode_object_create("OBJNAME");

is problem call:

dReal *pos;
pos = raydium_ode_object_get_pos_name("OBJNAME");

or

raydium_ode_object_get_pos_(a);


Note: I need place car back to normal position on current space position after flipping or crash, etc. All returned position are local offset

thx

Hello,

It's not as simple ...

Your car contains joints. So if you want to put your car at an other position / orientation. You will compute all joint relative orientation and put objects at the same place. It's quite complicated.

An other solution is to destroy object and built it at the new position. This can be done in one frame and work very well (have a look at mania drive for example).

It's the solution to this kind of problem (almost i think it is).

have a nice day
Ouille.

I don't agree. When car crash in middle of LAP, i need know THIS position for continue or flip car .

Sorry rayidium must be usefuly without limitation.

Hello,


When car crash.
1) Get car position (body element of the car).
2) Destroy the car.
3) Create a new car and move it to the postion (with correction) obtained in 1.


On the other side: to get object position you want:
Body car postion ? front left wheel postion ? rear right wheel position ? All of this are in the same object.

It is not a raydium limitation. Object are container for broad phase collision detection, and that's all.

Hope this help.

here is a function based on your own:



Press "end" key very briefly to test function (in other case car will fly away, for the reason already exposed).

Nice reflection on the car !


Have a nice day
Ouille.

thx