irrBullet Character example, gravity is along X axis :(

[poljak]

Hello everyone, I have a problem when I ran the Character example shipped with irrBullet the gravity seem to be set upon X axis instead of -Y
So the sydney character seem to 'fall' along the X axis and when I press Jump, she jump along X as if the gravity was set along X

I done some fixies in the irrbullet wrapper to make it compiles against bullet 2.88, does have make mistakes? If so you do you guys managed to make it work correctly?

Bonus question: how do you managed to do collisions with an FPS Camera?

Here are the changes done in the IKinematicCharacterController class

Code: Select all

void IKinematicCharacterController::setUpAxis(const irr::core::vector3df& axis)
{
    //  old: Character->setUpAxis(axis);
    Character->setUp(irrlichtToBulletVector(axis));
}
 
// ...
 
void IKinematicCharacterController::setGravity(irr::f32 gravity)
{
    //  old: Character->setGravity(gravity);
    Character->setGravity({0, gravity, 0});
}
 
// ...
 
irr::f32 IKinematicCharacterController::getGravity() const
{
    // old: Character->getGravity();
    return Character->getGravity().getY();
}

Libraries:
https://github.com/danyalzia/irrBullet
Bullet 2.88
irrlicht 1.9

[poljak]

still not managed do make it work
maybe I should post it in the advanced forum?

[CuteAlien]

Same guys reading those forums. Just not many people around familiar with irrBullet I suppose.

[polylux]

I'm not too familiar with bullet, but shouldn't you rather set the correct gravity in e.g. your btDiscreteDynamicsWorld rather than for the character?

[poljak]

The gravity is ok with the world (see image at bottom of the post, crates are failling correctly. The problem is with the character)
I did a try to set upAxis vector, get better results BUT now the capsule is now horizontal (leading a discrepancy with the sydney model)

character->setUpAxis(core::vector3df(0.0,1.0,0.0));

Visual result
https://prnt.sc/n5121p