Bouncing Cloud

sessien

Hi,

How can I move a cloud up and down slowly.

I want to get the effect of gently floating. I have tried so many things.

Thanks,

Sema

JPickard

I did something similar for my game. I found it in a template in the New section of GS, but I can't refind it right now so I'll try to reproduce it here:

_______________________________________

In the cloud actor:

First create 2 Integer Attributes:

whatdirction
wave

(leave them at 0)

_______________________________________

Timer:
__every 0.25 seconds --> (run to completein UNchecked) (this number can change to what you want)
____change attribute: Self.wave --> to (self.wave+1)%2

Rule:
when all conditions are valid
attriibute --> self.wave =1
+
attribute --> self.whatdirction = 0
___move
____direction 225 --> relative to actor --> move type: additive --> speed 100
______(both those numbers can change depending on what you want)

_______________________________________

Rule:
when all conditions are valid:
attribute --> self.wave =0
+
attribute --> self.whatdirection =0
__Move
____direction 135 --> relative to actor --> move type: additive --> speed 100
_____(both those numbers can change depending in what you want)

_______________________________________

Rule:
when all conditions are valid:
attribute- -> self.wave =0
+
attribute --> self.whatdirection =1
__Move
___direction 45 relative to actor --> move type: additive --> speed 100
_____(both those numbers can change depending on what you want)

_______________________________________

Rule:
when all conditions are valid:
attribute--> self.wave =1
+
attribute --> self.whatdirection =1
__Move
____direction 315 relative to actor->move type additive --> speed 100
_____(both those numbers can change depending on what you want

_______________________________________

RThurman

sessien said:
How can I move a cloud up and down slowly.

Try placing a constrain attribute behavior in the cloud actor:

Constrain Attribute: self.Position.Y To: 250-20*sin(self.Time*60)

250 is where the actor will start (in the Y direction). You can fiddle around with the numbers until you get the effect you want.

Be sure to use the drop-down menu in the expression editor to get 'self.Position.Y", 'sin' and 'self.time'. (Don't just type them in.)

Hope that helps!

JPickard

Well, that's a tad easier.

sessien

The cloud bounces to the left. I am tinkering with it.

Thanks.

RThurman

JPickard said:
Well, that's a tad easier.

Yes -- the joy of math!

sessien

Te constrain works like a charm.

Thank you both very much.

RThurman

sessien said:
The cloud bounces to the left. I am tinkering with it.

Thanks.

You might need to change it to self.Position.X and 250+20*cos(self.Time*60)
(Maybe its in a different orientation than I assumed.)

EDIT: Oops -- looks like you resolved it while I was posting.

sessien

sessien said:
The constrain works like a charm.

Thank you both very much.