Problem with Constrain to actor, Please Help!

cmw333cmw333 Member Posts: 76
edited November -1 in Working with GS (Mac)
I managed to figure out how to make a car with rotating wheels with the help of one of TSB videos. I set it so the car moves from left to right. When It moves to the right it works fine and when It goes the other way it also works, however as soon as I let go both wheels move forward. Im a relatively new to GS and tried many obvious ideas but nothing as yet works. I have attached a video so you see exactly what problem I am having.

http://www.youtube.com/watch?v=iE7IsTWkDA4

Chris

Comments

  • cmw333cmw333 Member Posts: 76
    can anyone help?
  • old_kipperold_kipper Member Posts: 1,420
    The first question I would ask you is- Are you constraining the positions of the wheels to the car with offsets for their positions relative to the car actor?

    cheers kipper
  • cmw333cmw333 Member Posts: 76
    TSB. When key right and key left are pressed. I can attach a screen shot so you can see what I have done.
  • cmw333cmw333 Member Posts: 76
    The problem seems to be when the car turns left and stops the wheels contrain to there starting positions and not to a new position X & Y position. I have attached a screen shot of one of the wheels if this helps.

    <img src="http://i75.photobucket.com/albums/i282/cmw333/backwheelPM.png" border="0" alt="Photobucket" />
    <img src="http://i75.photobucket.com/albums/i282/cmw333/backwheel2.png" border="0" alt="Photobucket" />
  • cmw333cmw333 Member Posts: 76
    Old Kipper, To answer your question that is exactly what I'm doing.

    Chr
    old_kipper said:
    The first question I would ask you is- Are you constraining the positions of the wheels to the car with offsets for their positions relative to the car actor?

    cheers kipper

    That is exactly what i'm doing
  • old_kipperold_kipper Member Posts: 1,420
    I think if you make rules for the constrained position based on the displayed car image then it would avoid the return to the start position which is out of sync with the return position of the car.

    If you have not done so already you might also jiggle the art of the car so the wheels for back and front are in identical positions so you don't have to switch them for each direction. This you could do in photoshop by flipping a copy of the car and then overlaying it so the wheel arches line up and then crop to the combined width.

    hope that helps

    kipper
  • cmw333cmw333 Member Posts: 76
    thanks old_kipper I will have a go at doing what you suggested first.

    regards

    Chris
  • old_kipperold_kipper Member Posts: 1,420
    If you are still having problems PM me your email address and I will send you a quick test I have done.

    kipper
  • cmw333cmw333 Member Posts: 76
    old_kipper I tried what you suggested but didn't work out. Could you send me your test version please so I can see if you have a better idea than me.

    my email is chriswatts1978@yahoo.com.

    thanks alot

    Chris
  • micksolomicksolo Member Posts: 264
    My first thought is that it might be that the global attribute you used for the car or wheel position might be an integer so that's why you are getting slight movement at end. Is this the case? If so try using real attribute for much finer precision as it uses decimal points whereas integer only uses whole numbers.
  • cmw333cmw333 Member Posts: 76
    Hi Micksolo

    Im using real attributes not integer. I just checked and doesn't make a difference for my example.
    Thanks for the thought.

    Chris
  • old_kipperold_kipper Member Posts: 1,420
    Chris. It's sent.

    Kipper

    edit.... I think on another look at your demo that the wheels might be reverting back to the right car facing position and the car is still facing left. If your art is not totally symmetrical... they are not going to sit in the correct position.
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