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    Sketchyphysics gravity management

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    • K Offline
      Kislashe
      last edited by

      Hi everyone,
      I'm new on sketchyphysics, I read tutos and forums thoose last days, there is a simple thing I try to do but I can't. A sphere jointed to an hige and behaving like a marble attached to a string would in the real life. Like a pendulum. I tried answers in topics of this forum but still doesn't work (must be my bad ).

      My sphere balances, no problem, but the movement is much more slowed down than I would expect. I put a value to "thrust" in the UI but it works just in one direction. I guess I'd have to script something but I don't know how to do that. BTW if you have a tip for me to get started in scripting, you are welcome.

      In a general way, could someone waste a little of his time to explain me how gravity is managed in that software? THXS 😄

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      • B Offline
        blossa
        last edited by

        If you mean howto adjust gravity, then it is under Plugins->SketchyPhysics->Physics Settings.

        I'm also new to Physics so this with scripting sounds interesting. 😄 I must check that out. 😄

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        • K Offline
          Kislashe
          last edited by

          Thanks Blossa, I hadn’t noticed the settings 😄

          But I still can’t understand the way it works 🎉 I try to make a correspondance between the SP gravity setting (1 by default) and the gravity acceleration we know on Earth (g=9.81 meters per sedond per second). So I make an object to fall from different heights (h) and record the frame when it touches the ground. I’ve been taught at school that h=0.5g * t², the formula expects seconds for t, let's say frames are seconds. I should find a constant when calculating h/t² but in SP it looks like the longer an object falls, the less it accelerates wich makes me a little confused. SP simulates the vacuum, doesn’t it ?

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          • M Offline
            mptak
            last edited by

            http://sketchucation.com/forums/viewtopic.php?f=61%26amp;t=37533%26amp;p=484617%26amp;hilit=suite+spot#p484617

            also there are some code settings for linear and angular damping which can be tweeked. I'll look for and post an example

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