Hello,

I create a camera which is still centered on an object and I can freely rotate it by mouse. After each 3 seconds I want smoothly rotate this camera to default position behind the object. I tried to do it by AdjustValTime but I haven't got any effect. How can I do that?

problem with the time countdown or the return path?

With both I made some code which countdown the time but I'm not sure is it in 100% ok and inside it I put AdjustValTime but I still can rotate camera and it never changes to default position,

Flt freeCamTime=3;

if((freeCamTime-=Time.d())<=0)
{
Matrix m=Players[0].refCar().actor.matrix();
camPos=m.pos-m.z*(6.7)+Vec(0,2.8,0);
AdjustValTime(desired_camera.matrix.pos,camPos,1);
freeCamTime=3;
}

I dont know, I believe the timer should work, though I think you should define time in AdjustValTime, you only define pos, target pos and exponent?

pos,target pos,exponent, time



also sometimes you can run

What exactly is exponent? Maybe I write what exactly I want to obtain:

I want make a vehicle camera like in GTA games. I can rotate it to see car for example from left side or top and if I don't move camera it resets behind the car to see the road.

(08-11-2010 02:26 PM)Harry Wrote:  With both I made some code which countdown the time but I'm not sure is it in 100% ok and inside it I put AdjustValTime but I still can rotate camera and it never changes to default position,

Flt freeCamTime=3;

if((freeCamTime-=Time.d())<=0)
{
Matrix m=Players[0].refCar().actor.matrix();
camPos=m.pos-m.z*(6.7)+Vec(0,2.8,0);
AdjustValTime(desired_camera.matrix.pos,camPos,1);
freeCamTime=3;
}

Well, part of the problem is that AdjustValTime is only being called once. It needs to be called multiple times, so something like this...


This probably won't work 100% but should get you heading in the right direction; at least, I think so.

Now it's called not only once but still nothing changes. I tried to set another values for camPos like Vec(10) and it doesn't work too.

Could you post the entire camera code?
In this case usually the easiest to do it make a standard cam, and 2 temps.
standard is the preset cam pos,
temp one is the one that is used but references both of them.
temp two would be the rotation for temp one to follow if you rotate the camera.

Here s complete code for vehicle camera:

looks like it might be because defaultCam is always true.
this always sets it to true.


this is run inside the if statement above.
Try setting it after the if(defaultCam) not inside it


that first if will look like this for the compiler because you dont close it

I set this after if(defaultCam) but nothing changes. I have free camera around the car and after 3 second it stays in one position and I can't do with it anything. I think that this is as you wrote - defaultCam is always true because if (desired_camera.matrix.pos == camPos) isn't true anytime and I haven't got any movement of camera in AdjustValTime.

try moving the if(defaultCam) out of the if(defaultCamTime) aka set it

Also, when I create timers I usually run

Sometimes you can also write Timer functions which can many times help making the code easier to read because they are seperated.

Ok, I've made a big progress and it almost works as I want. But I have one question. By using Lerp I change camera yaw to -PI_2:

desired_camera.yaw =Lerp(camYaw,-PI_2,Time.d());

but it changes camera yaw in global space. How can I change it according to object?

you mean like, chaning yaw around the object instead of the camera rotating its yaw by its own location?

http://img594.imageshack.us/i/29476437.jpg/

When car is in this position camera sets good like in image.

http://img828.imageshack.us/i/23422398.jpg/

But here camera yaw is still set to -PI_2 but not according to vehicle rotation to see lke here:

http://img835.imageshack.us/img835/6141/51715627.jpg