Speed up Actor over Time

TouchTiltGames

Tried to find the answer in the forums - Just trying to speed up an actor over time.

So I've got a game.speed (interger) attribute and I want it to speed up by +5 every 15 seconds or so.

on the actor I've got change attribute game.speed to game.speed+5
but how do I define speed? I tried a Rule if game.speed +5 then accelerate....

RH

Maybe you should try using interpolate and use the self.motion.X for controlling the actors 'speed' (note that self.motion.X actually refers to velocity which is a vector value).

I'd do something like this:

- create a self.previousXvel (integer attribute)



This will give you a smooth increase in the speed (looking like a temporary acceleration).

Obviously the timing you can alter and the first 'change attribute' is `change to self.motion.X'

TouchTiltGames

Hey RH, thanks a lot for this.

Yeah I was trying to get it to accelerate in any direction, so I tried your example but seemed to go pretty nuts on the x and y and doesn't speed up over time lol. Here's what I have:

every 1 second
change self.speedup to self.motion.linear velocity.X
change self.speedup to self.motion.linear velocity.Y

interpolate self.motion.linear.X to self.speedup+25
interpolate self.motion.linear.Y to self.speedup+25

TouchTiltGames

Bumping this up to ask someone else if they know how to speed up an actor over time using Interpolate? I must be close...

ORBZ

have you tried using accelerate behavior? it seems the obvious choice.

However, if for some reason you want to "roll your own" acceleration behavior:

http://en.wikipedia.org/wiki/Equations_of_motion

Xizax

if you are wanting to speed up continuously I have a bit of code I use to speed up over a rising attribute `[IMG]http://i54.tinypic.com/30dbghv.jpg[/IMG]` `[IMG]http://i56.tinypic.com/k30rut.jpg[/IMG]` i really hope this doesn't show up as code and as a pic instead. :P

RedlerTech

This post is over 9 months old... I think he/she figured out the issue.