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  How to calculate a missles flight path? Splines?  (Read 3932 times)
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Offline Ladnaks

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« Posted 2010-04-08 17:14:10 »

Hallo

First, please excuse my bad english.

I am currently making a Java3D game. In this game thera are missles from which I know the start point, the endpoint and the angle at the start point. In a physics book I found a fromula to calculate the flight path. But in some Java3D tutorials I read something about splines which should be more efficient than calculating the current position of the missile with the physic formula.

Currently I am confused about this splines. For what I understand I need some points and a spline interpolates the points between the points I know. Can I just calculate some points of the flight path with the formula and then interpolate the flight path with a spline function?
Offline Riven
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« Reply #1 - Posted 2010-04-08 18:37:22 »

Splines can only be used in very few cases.
They are almost unusable for any simulation.

Just use your physically correct formulas, I doubt it will hurt performance, unless you launch thousands of missiles.

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Offline moogie

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« Reply #2 - Posted 2010-04-08 23:05:45 »

perhaps pursuit steering behavior would be sufficient?

http://www.red3d.com/cwr/steer/PursueEvade.html
http://www.red3d.com/cwr/papers/1999/gdc99steer.html

just extend it to 3d
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Offline Ranger
« Reply #3 - Posted 2010-04-10 23:22:00 »

Easiest way I found was to give the missile thrust, and then steer it left and right.  To work out the path, just iterate forward in time.
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