Hi, all. I've decided to write a custom utility function used for facing one entity to another (for instance the camera to another object). I had thought I had all the math worked out (as for using trigonometry to find the angles and whatnot), but apparently I haven't got it all figured out as far as the code is concerned.

Here's the function:

Code:
void FaceObject(ENTITY* ent1,ENTITY* ent2)
{
	distz= ent2.z - ent1.z; //these are the distance variables.
	disty= ent2.y - ent1.y; //as you can see,these find
	distx= ent2.x - ent1.x; //the distance between the x,y,and z components.
	
	distxy= sqrt(pow(distx,2) + pow(disty,2)); //finding general distance to object
	/*I prefer not to use vec_dist() here because
	 *I have already found the z distance above,
	 *and I don't need more than the x and y in
	 *this case.*/
	
	ent1.pan= atan(disty/distx); //using arc tangent to find pan
	ent1.tilt= atan(distz/distxy); //and tilt angles.
}


Can anyone tell me what I'm doing wrong here? Maybe I should be using atanv()?

Well, I suppose it would help if I explained a bit more in detail,blush. I run it, and the camera is just sitting there, doing nothing, facing straight. I have the object that I want the camera to face at an obscure position from the camera, so I know it's not just that the effect isn't visible.

Last edited by MrCode; 07/11/08 23:50.
Code:
void main()
{
    cout << "I am MrCode,";
    cout << "hear me roar!";
    system("PAUSE");
}