About rotate actor

Elsafty

hi guys, so i have problems when actor(x) rotate around another actor(y) which rotate around itself in ad-hoc. When I stop games and play the postion actor(x) around the actor(y) change .how i can fix that?

POM

When I stop games and play

What do you mean ?

Roy

Elsafty

If you out from games and then play again on your iPhone

POM

Im really sorry for misunderstanding what you ask ..
You say your actor(x) is rotating around actor(y) , then you 'go out from the game' and 'come back to it' and you actor(x) position is changed ?
Changed how? does it stop rotating around actor(y)? please be more specific ..
Also what rule you use for the rotation?

Roy

Elsafty

...

POM

Still don't follow ... you say actor(y) is rotating around itself , meaning he's X and Y value stays the same , meaning he doesn't move ! how can he change his position ?

Roy

Elsafty

Im very sorry, i mean that,
1- actor(y) rotate about itself by use rotate rule.

2- actor(x) rotate about actor(y) by using :
(Constrain the actor's X position to . . . AAA*cos(self.time*BBB)+CCC
Constrain the actor's Y position to . . . AAA*sin(self.time*BBB)+CCC

AAA = the radius of the orbit.
BBB = how fast it moves.
CCC = the centre of the orbit.)

3- I need actor(x) to rotate about actor(y) by same rotate speed of actor(y) about itself. So, the actor(x) will be in fix postion around actor(y) when actor(y) rotate.

4-the problems is the postion of actor(x) changed when Out from the game and come back

POM

Ok , i see the problem now , your problem is the sync rotation between the two actors .
(if you just said the word "sync" i would probably understand it earlier )
So what i suggest is to use GAME.TIME instead of Self.Time in your actor(x)

As for actor(y) , replace the "rotate behavior" with
Constrain self.rotation TO Game.time*DDD

DDD- a number - you need to make some tests to find the right number to sync with your actor(x) but maybe (just maybe) your BBB value will do it

Roy

Elsafty

Thanks for your help ,I will try it

Elsafty

It worked thank you again. But I have little one question, How I changed the postion of actor(x) around the acto(y)

POM

Well , since your actor(x) movement is based on constrains and its rely on a game clock , i don't think you can .. cause the constrain will override every change you make ..
if you describe what you trying to do maybe ill be able to be more helpful .

Roy

Elsafty

I make Gear teeth which rotate , and I need the every Gear teeth round in fix rotation

Elsafty

Sorry in fix postion

POM

If you want different "gear teeth" to be at a different location around the center, you need to add an offset to each teeth ..
In your equations , you need to add an extra to the "Game.time"
Constrain the actor's X position to . . . AAA*cos((game.time+0.2)*BBB)+CCC
Constrain the actor's Y position to . . . AAA*sin((game.time+0.2)*BBB)+CCC

Each gear will have to have a different "extra" value .

My suggestion is to make a self.attribute - real - call it "my offset"
Now make your equations like this :
Constrain the actor's X position to . . . AAA*cos((game.time+"self.my offset")*BBB)+CCC

And in each instance (each teeth) give "self.my offset" a different value .

Roy

Elsafty

Thanks for your help again