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DarkBASIC Discussion / exponential curve on a sprite

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alanuk
22
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Joined: 25th Mar 2003
Location: United Kingdom
Posted: 23rd May 2003 22:05
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I am trying to get an effect like a bulet coming out of a gun and falling to the ground.

The sprite is moving across the screen and I want it to fall to the bottom in a curve something like an exponential effect, but any curve will do.

I am stuck with this one all afternoon.

Any ideas please?

regards Alan
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Hell IVIonkey
22
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Joined: 1st Apr 2003
Location: Outer Limits
Posted: 23rd May 2003 22:54
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I'd think you'd want something more parabolic to simulate gravity.

Easiest way (you can fudge with values later) is the following:
When you shoot the gun, set yvelocity# to 0 for the bullet.
Every itteration, subtract 1 from yvelocity#.
Additionally, every itteration, set the bullet ypos# to ypos#+yvelocity#.

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