Camera follow player?

[Giangi]

I set my mesh node as the parent of my camera scene node. So when I rotate my player the camera follows it, but when I go forward the camera looks away. Is a library bug or I made some mistakes?

[SuryIIID]

You should update your camera target in the main loop

camera->setTarget(playernode->getPosition) ;

[Giangi]

Thank you this worked very well

[qwe]

But it flakes out when the player it is following turns and starts moving in a different direction. You'll also have to do some fancy math and a camera->setTarget() for it to work right...

[rt]

if you want a camera which stays 'behind' a node (like a 3rd person camera) then try this:

Code: Select all

// this should go somewhere in your update loop
vector3df forward( sin( node->getRotation().Y*PI/180.0f ), -1, cos( node->getRotation().Y*PI/180.0f ) ); 
//now position the camera 50 units behind and above node, looking
//at it's bottom
camera->setPosition( node->getPosition() - forward*50.0f ); 
camera->setTarget( node->getPosition() );
//make sure the camera is updated
camera->updateAbsolutePosition();

note that updateAbsolutePosition() is protected so you will not be able to call it unless you derive your own camera class or hack the irrlicht source. the reason that i call it is because i have experianced camera 'stutter' if i don't call updateAbsolutePosition() before the render.

[keless]

the reason that i call it is because i have experianced camera 'stutter' if i don't call updateAbsolutePosition() before the render.

I have heard that the IrrLicht engine does not actually enforce transformation changes until the frame after they were called. perhaps this simply forces it to?

[rt]

the reason that i call it is because i have experianced camera 'stutter' if i don't call updateAbsolutePosition() before the render.

I have heard that the IrrLicht engine does not actually enforce transformation changes until the frame after they were called. perhaps this simply forces it to?

i read that somewhere as well, and that is exactly why i call updateAbsolutePosition() when i make a change i want it updated RIGHT NOW... no patience
but like i said, it fixed problems i was having with camera stutter which is a good thing. my camera is a derived class so it isn't any trouble to call it.