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Trigger events for non-dynamic entities

Discussion in 'Physics for ECS' started by GaryT_01000111, Dec 16, 2019.

  1. GaryT_01000111

    GaryT_01000111

    Joined:
    Aug 4, 2017
    Posts:
    13
    I was wondering if trigger events work with non-dynamic (without PhysicsVelocity) entities. Thanks.
     
    Last edited: Dec 16, 2019
    GaryT_01000111, Dec 16, 2019
    #1

  2. Rory_Havok

    Rory_Havok

    Joined:
    Jun 25, 2018
    Posts:
    70
    Trigger events require at least one of a pair of colliding bodies have a PhysicsVelocity. This is because the physics step does nothing at all for static vs static pairs - the broadphase does not report them as overlaps, by design.

    The recommmendation is to make your triggers kinematic (PhysicsVelocity = 0, no PhysicsMass), so that they do detect overlaps with static bodies but are not moved by the physics step.
     
    Rory_Havok, Dec 18, 2019
    #2