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Thread: Physics, rope stuck to hotSpot?

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    Physics, rope stuck to hotSpot?

    I am only checking possibilities here.
    Don't know which extension would be able to do what I am after (Phizix ?)but this is what I am after:

    A short rope, made up of parts so it will move. It's stuck at one end to a static, non moving object. Stuck at the other end to an animated AO, preferably at the hotspot so the rope will follow the AOs moves.
    Is it possible to do something like this?

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    Re: Physics, rope stuck to hotSpot?

    Platform Swing object?

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    Re: Physics, rope stuck to hotSpot?

    It's for a tied animal moving around a bit. So one end of the rope will be at the animal and the other at the wall.

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    Re: Physics, rope stuck to hotSpot?

    You can do that with the Box2D Object. Simply create bodies at your rope joints, and connect them with distance joints. For better appearance, draw a polygon with the Surface Object using your rope joints as vertices

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    Re: Physics, rope stuck to hotSpot?

    Jacob. An example of that would be cool.

    Thanks

    Marv
    ​458 TGF to CTF 2.5+ Examples and games
    http://www.castles-of-britain.com/mmf2examples.htm

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    Re: Physics, rope stuck to hotSpot?

    What nivram said.

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    Re: Physics, rope stuck to hotSpot?

    Just want to reveal my level of ignorance level about this. :blush:

    Been at this for hours now and still don't get it.
    I dissected the "joints" of the phizix exmple to try to understand and it helped some.
    It's nothing wrong with the extension, it's my brain that can't put it together.

    Quote Originally Posted by Jacob
    You can do that with the Box2D Object.
    I take it this is the Phizix extension?

    Quote Originally Posted by Jacob
    Simply create bodies at your rope joints,
    Are these 'bodies' the Active objects in the frame editor?

    Quote Originally Posted by Jacob
    and connect them with distance joints.
    And these I presume are Active objects too?
    So does the size of these distance objects matter or can they be just a small square?

    Then this has to be "put together" with events somehow and this is where I am totally lost. Is there a manual around?

    Quote Originally Posted by Jacob
    For better appearance, draw a polygon with the Surface Object using your rope joints as vertices
    Sorry, but I completely lost you here.

  8. #8
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    Re: Physics, rope stuck to hotSpot?

    Quote Originally Posted by Tiny
    Quote Originally Posted by Jacob
    You can do that with the Box2D Object.
    I take it this is the Phizix extension?
    Careful, now, there's "Phizix - Chupmunk" and "Phizix - Box2D", and there's also two different versions of the Box2D extension.

    Quote Originally Posted by Tiny
    Quote Originally Posted by Jacob
    Simply create bodies at your rope joints,
    Are these 'bodies' the Active objects in the frame editor?
    You're half right, you create the bodies inside the Box2D object, and attatch your active objects to the bodies so they will move with the invisible bodies. (Similar to platform movements with an invisible collision mask and a visible player)

    Quote Originally Posted by Tiny
    Quote Originally Posted by Jacob
    and connect them with distance joints.
    And these I presume are Active objects too?
    So does the size of these distance objects matter or can they be just a small square?
    Depending on how you do your rope actives above, you may not even need to have active objects for the joints - or the other way around (which may be better)

    Quote Originally Posted by Tiny
    Then this has to be "put together" with events somehow and this is where I am totally lost. Is there a manual around?
    No, sorry, as with all excellent extensions, most of the time is spent making the extension and not the help. However, there does happen to be an automatically generated manual for all extensions, but you have to ask it a question instead of reading it - it's these forums

    Quote Originally Posted by Tiny
    Quote Originally Posted by Jacob
    For better appearance, draw a polygon with the Surface Object using your rope joints as vertices
    Sorry, but I completely lost you here.
    He's saying that instead of using actives you could also draw onto the surface object (a better version of the overlay objects), but this is optional. If you get the effect you want with actives, look no further
    Working as fast as I can on Fusion 3

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    Re: Physics, rope stuck to hotSpot?

    Thanks LB. Now I understand a bit more.

    I found THIS Box2D 2.1.0 manual, will it help some or just mislead me?

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    Re: Physics, rope stuck to hotSpot?

    You could do this in MMF2 without any Physics extensions if you want. UltimateWalrus has a couple examples on his site.
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