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2D physics material bounce problem

Discussion in '2D' started by pandabear, Sep 3, 2015.

  1. pandabear

    pandabear

    Joined:
    Sep 12, 2013
    Posts:
    5
    Im following this course but when I got into physics material 2D the and set the bounciness to 1 the ball keeps bouncing higher and higher. shouldn't that be that the ball will bounce on the same height no matter what?

    I am using Unity 5

    Here is the image of my ball properties and the physics material



    1 indicates a perfect bounce with no loss of energy, so how come that every time my ball bounce it keeps getting higher?
     
    pandabear, Sep 3, 2015
    #1

  2. bkmagnetron

    bkmagnetron

    Joined:
    Nov 18, 2015
    Posts:
    4
    Same here I'm also following this course and I'm having the same issue.
    Version: 5.2.2f1
    OS: Windows
     
    bkmagnetron, Nov 25, 2015
    #2
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  3. tedthebug

    tedthebug

    Joined:
    May 6, 2015
    Posts:
    2,570
    On the physics material, is it set to average, multiply or whatever the other option is?
     
    tedthebug, Nov 25, 2015
    #3

  4. bkmagnetron

    bkmagnetron

    Joined:
    Nov 18, 2015
    Posts:
    4
    Solved after changing the Collision Detection of Rigidbody 2D to Continuous. But I noticed slight higher, lower, higher, lower... bounces. But in previous version(4) there is no need to change from Discrete to Continuous.
    @tedthebug sorry I don't understand what you're saying I hope you're talking about Physics2D Material.
     
    Last edited: Nov 25, 2015
    bkmagnetron, Nov 25, 2015
    #4

  5. tedthebug

    tedthebug

    Joined:
    May 6, 2015
    Posts:
    2,570
    sorry, I was confused with 3D as I've used it on both 2d & 3D games.

    I've never had this issue in my 2d games
     
    tedthebug, Nov 25, 2015
    #5

  6. AlanGameDev

    AlanGameDev

    Joined:
    Jun 30, 2012
    Posts:
    437
    That's because the physics engine is not very precise. There is a web page comparing bounces for the same (or approximate) settings on various 3d engines like bullet, havok, newton and physx and the imprecision is really noticeable. I can't find the link any longer, sorry.
     
    AlanGameDev, Nov 27, 2015
    #6