Moving a camera forward

[dudMaN]

Hi everyone.

i'm trying to move my camera forward.

i just use

Code: Select all

cam->setPosition(cam->getTarget());

and it works, but its REALLY slow, so i tried:

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vector3df pos = cam->getPosition();
   vector3df movedir = cam->getTarget();
   movedir.Y = 0.0f;
   movedir.normalize();
   pos += movedir * 0.0000001f; // speed

   // Mv Forward
   cam->setPosition(pos);

and it just moves to the right.. i guess it works because no matter how i turn it always moves to the right.. -_- but i need it to move forward :(:(

Plz help!

-dudMan

[jreuschel1]

try moving based on the difference of the two positions


maybe something like this:

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vector3df varCPos,varTPos,varNPos;
float moveFactor=0.0001f;
varCPos=cam->getPosition();
varTPos=cam->getTarget();

varNPos=(varTPos-varCPos);
varNPos.normalize();
varNPos=varNPos*moveFactor;

cam->setPosition(varCPos+varNPos);

[dudMaN]

hm.. it doesnt work..

and i kinda suck at math, havent taken a math or algebra class in a LOONG time..

o yea and im only 12 so i havent even been to college yet

-dudMan

[Panos]

Perhaps you could use an animator assigned to the camera...

[vi-wer]

Hi dudMaN,
Your code is the right way. It only needs a few changes. And here they are:

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   vector3df pos = cam->getPosition();
   vector3df target = cam->getTarget();
   vector3df movedir = target - pos;
   
   movedir.normalize();
   pos += movedir * 0.0000001f;   // speed
   target += movedir * 0.0000001f;   // speed

   // Mv Forward
   cam->setPosition(pos); 
   cam->setTarget(target); 

As far I know the target position will not change if you set a new cam position. That's why you should also set a new target.