Moving a GameObject along a Custom (Curved) Spline

stop me if you've already heard this one, but have you investigated itween for unity? it has path movement and sounds like what you'd need

http://itween.pixelplacement.com/documentation.php

Thanks for the reply zombience , I did actually read about it on a forum but the person was dismissing it as being performance heavy and useless when it came to iOS so I didn't look into it any further. Do you have any experience using it?

Edit: I see that iTween is only for C# development? What a shame, it looked great.

FWIW

here's the simplest possible way i've ever been able to write routines to calculate equidistant points (actually approximately equidistant) and the tangents of those, along a cubic bezier:

 float bezierPoint(float t, float a, float b, float c, float d)
     {
     float C1 = ( d - (3.0 * c) + (3.0 * b) - a );
     float C2 = ( (3.0 * c) - (6.0 * b) + (3.0 * a) );
     float C3 = ( (3.0 * b) - (3.0 * a) );
     float C4 = ( a );
 
     return ( C1*t*t*t + C2*t*t + C3*t + C4  );
     }
 
 float bezierTangent(float t, float a, float b, float c, float d)
     {
     float C1 = ( d - (3.0 * c) + (3.0 * b) - a );
     float C2 = ( (3.0 * c) - (6.0 * b) + (3.0 * a) );
     float C3 = ( (3.0 * b) - (3.0 * a) );
     float C4 = ( a );
 
     return ( ( 3.0 * C1 * t* t ) + ( 2.0 * C2 * t ) + C3 );
     }

The four values, C1 C2 C3 C4, are sometimes called the coefficients of the bezier. (Obviously, you could just separately calculate those one-time if you feel like it.)

The factors a b c d are usually called the four "control points" for a bez.

Of course, t runs from 0 to 1, say every 0.05. "t" is conceptually like time as you move along the bezier.

If you are working in two dimensions, simply call the whole thing with all the X values to get the X result, and separately, with all the Y values for the Y result. In three or more dimensions again simply call the whole thing once for each dimension.

I am working on a project with the same concept as described above, yet I want the player to be able to move the object/camera forward and backward along the path . $$anonymous$$any of the solutions posted here seem to be more suitable for an animated camera flythrough. I'd be very happy if someone has a hint on this.