Lock Actors together

Tomaff

I have a car in profile at the moment. However as it is driving if the car rotates how do i get the wheels which are seperate actors to rotate with it?

CodeMonkey

You would benefit from this How To: http://gamesalad.com/wiki/how_tos:gsc_follow_another_actor

and possibly this one:
http://gamesalad.com/wiki/how_tos:gsc_circular_movement

Tomaff

Tried using the how to in the first post. When i go to preview i get a scrambled screen. Then when i return to the editing screen the constrain attribute for the follower has been clear of the text entered.

Tomaff

Right got them locking together. But at the moment it locks to the center of the actor. How do i ad an offset?

CodeMonkey

On the wheels where you constrain the position attributes, add the offset there.
e.g. Constrain Attribute: self.Position.X = game.carX + 12

This won't work well if you are rotating the car but that's where the second how to may help.

Tomaff

Well thanks for you help. But as i am relatively new to this i cannot seem to work it out. I would like the end product to be when you press the right hand key the car rotates clockwise. When the left key is pressed it rotates c-clockwise. However the wheels (2 seperate actors) will hold their position in relation to the car but rotate with it? Do you have any ideas, because i am stuck.....

Thanks for your help.

Fafnir312

Constrain the wheel rotation to the car body rotation. I would think this should work.

Make a game attribute called something like WheelRot, then go into your wheel actor and add a constrain attribute behavior that constrains game.WheelRot to self.Rotation (or whatever it's called). Next, go into your car-body actor and add a constrain attribute behavior to it which constrains game.WheelRot to self.Rotation.

... I haven't tried this but it should work... I think. Maybe I will go try this now before starting papers for my midterm :P Games come first you know.

EDIT: Tested it and it works.

The Actors
http://i3.photobucket.com/albums/y58/MattVG/Game Stuff/Picture2.png

The game attributes
http://i3.photobucket.com/albums/y58/MattVG/Game Stuff/Picture3.png

The Wheel behavior
http://i3.photobucket.com/albums/y58/MattVG/Game Stuff/Picture4.png

The CarBody behaviors
http://i3.photobucket.com/albums/y58/MattVG/Game Stuff/Picture5.png

I hope that helps.

Tomaff

Cheers for that. Lets give it a go. Screw my design job. Fun takes priority

Tomaff

Had another go at this and just flat out stuck. If any one can solve this i would be very grateful.

Fafnir312

Did you get it worked out? It might help to post a screen shot of what you're trying to do along with a description. You might get better help that way.

Tomaff

<img src="http://i661.photobucket.com/albums/uu337/tomaff/one-07-crf450-02-07-alpha.jpg" border="0" alt="Photobucket">

So this is what i am trying to achieve. Sorry for the drawing. Actor 1 has to be able to rotate 360. Which is simple enough. The only trouble is that i cannot get actors 2 and 3 to lock themselves in the same position relative to actor 1 while actor 1 rotates. Actors 2 and 3 will also need to rotate themselves on their central axis.