Comments (9)
stephengold
commented on July 17, 2024
Thanks for reporting this issue. I'll investigate and try to advise you.
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waveware4ai
commented on July 17, 2024
p{margin-top:0;margin-bottom:0}
Thanks for your reply.
This move is capture file ...
Have a nice day !
…--------- 원본 메일 ---------
보낸사람: Stephen Gold <[email protected]>
받는사람: stephengold/Libbulletjme <[email protected]>
참조: waveware4ai <[email protected]>, Author <[email protected]>
날짜: 20.06.04 00:46 GMT +0900
제목: Re: [stephengold/Libbulletjme] SoftBody Endless Fall down (#2)
Thanks for reporting this issue. I'll investigate and try to advise you.
—You are receiving this because you authored the thread.Reply to this email directly, view it on GitHub, or unsubscribe.
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stephengold
commented on July 17, 2024
According to my tests, Bullet implements soft-versus-rigid collisions only for rigid bodies with 3-D convex shapes. I therefore advise replacing the PlaneCollisionShape with a (large) 3-D convex shape such as a BoxCollisionShape, CylinderCollisionShape, or HullCollisionShape.
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waveware4ai
commented on July 17, 2024
p{margin-top:0;margin-bottom:0}
Thanks your fast replay :-)
I was replace code, then test again.
but, this time happened two cude fall down.
I did try CylinderCollisionShape, this has a also result ...
code below that ...
…----- replaced BoxCollisionShape
{ PhysicsRigidBody floor = new PhysicsRigidBody(new BoxCollisionShape(1000f, 0.01f, 1000f)); floor.setPhysicsLocation(new Vector3f(0, 0, 0)); space.addCollisionObject(floor);}----- replaced HullCollisionShape{ PhysicsRigidBody floor = new PhysicsRigidBody(new HullCollisionShape(1000f, 0, 1000f, 1000f, 0, -1000f, -1000f, 0, 1000f, -1000f, 0, -1000f, 1000f, 0, 1000f, -1000f, 0, 1000f, 1000f, 0, 1000f, -1000f, 0, 1000f)); floor.setPhysicsLocation(new Vector3f(0, 0, 0)); space.addCollisionObject(floor);}how can i do ?
have a nice day !!!
--------- 원본 메일 ---------
보낸사람: Stephen Gold <[email protected]>
받는사람: stephengold/Libbulletjme <[email protected]>
참조: waveware4ai <[email protected]>, Author <[email protected]>
날짜: 20.06.04 02:19 GMT +0900
제목: Re: [stephengold/Libbulletjme] SoftBody Endless Fall down (#2)
According to my tests, Bullet implements soft-versus-rigid collisions only for rigid bodies with 3-D convex shapes. I therefore advise replacing the PlaneCollisionShape with a (large) 3-D convex shape such as a BoxCollisionShape, 'CylinderCollisionShape, or HullCollisionShape`.
—You are receiving this because you authored the thread.Reply to this email directly, view it on GitHub, or unsubscribe.
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waveware4ai
commented on July 17, 2024
This is movie clip
replaced BoxCollisionShape
https://mega.nz/file/scoURK7a#koQ2TisBUeVHNrSiT1LyWjb8vwHpAaFugW_VUZRde7c
replaced HullCollisionShape
https://mega.nz/file/wcoAWA5T#lEXDMwAOMQVmTa1HwVc4AxsSOH5v-7_VFPdUlDGAY1k
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stephengold
commented on July 17, 2024
The hull shape you created has zero thickness, making it 2-D rather than 3-D. The box shape you created has a total thickness of 0.02, making it far too thin for a 30-millisecond timestep with gravity=9.81
Again, I recommend using a 3-D convex shape for the floor.
Also, try reducing the timestep from 0.03 second to a smaller value, such as 0.003 second, or else reducing gravity so that the boxes don't fall so fast.
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stephengold
commented on July 17, 2024
@waveware4ai Has your issue been solved?
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waveware4ai
commented on July 17, 2024
Hello stephengold~
I did solved for your help.
I forgot to setting floor mass to zero.
There is nothing error just now ...
I m very thanks to you.
below is changed code
PhysicsRigidBody floor = new PhysicsRigidBody(new BoxCollisionShape(1000f, 0.01f, 1000f));
floor.setMass(0); <-- my mistake static mass zero !!!
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stephengold
commented on July 17, 2024
Good catch! I'm glad it's working for you now.
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