Increase velocity without changing trajectory

Question

I have a rigidbody that has been launched high into the air. I've calculated the exact angle needed to hit a specific target on a distant battlefield, and it works perfectly. Now, however, I have been told to increase its velocity as it nears the ground. Is there a way to increase speed on the rigidbody without messing up the trajectory? The calculation for the trajectory is quite complex, and would be very difficult to modify directly for a sliding velocity.

Thanks! The equation I'm using is below:

 float sqrt = (v * v * v * v) - (g * (g * (x * x) + 2 * y * (v * v)));
 float theta1 = Mathf.Atan(((v * v) + Mathf.Sqrt(sqrt)) / (g * x));

Answer 1

Answer by Waz · Sep 06, 2011 at 05:19 PM

If you increase gravity, both g and the actual gravity in the game (or just as applied to the projectile), you will get a higher overall speed.

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sandworm · Sep 06, 2011 at 05:23 PM 0

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Wouldn't that skew the parabolic arc?

Waz · Sep 06, 2011 at 05:25 PM 0

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Not if you change both gravity and the calculation taking gravity into account (I.e. g in you equation).

sandworm · Sep 06, 2011 at 08:40 PM 0

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Any idea how I would go about that? It might not be the best idea though, since there may be multiple projectiles aloft simultaneously.

Waz · Sep 06, 2011 at 10:43 PM 0

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You have g in your equation. Physics gravity is set in Project Settings - Physics.

Believe me, it will work.

Increase velocity without changing trajectory

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