Shaking?

memski425

Hi,
when my actor collides with the ground i made it starts shaking and moving on the ground. All my collision rules are made. i am not sure if it is a bug or a rule that is wrong

jamie_c

I'm not sure if it's the same problem, but I had something similar once and solved it this way:

http://www.jamie-cross.net/?p=272

Jamie

ORBZ

What you are experiencing is physics engine jitter. i.e. noise from very small values being computed as the speed of the object approaches, but never quite reaches zero.

Solution:

Track the speed of the object, when it's really really low force it to stop:

Constrain self.speed (real) = magnitude(linearVelX, linearVelY)

rule speed < 10
-- Change Velocity: 0

Alternatively, sometimes instead of Change Velocity you want to override any forces acting on the object (like gravity) in that case you can use a Move Behavior, type: Stacked, speed: 0 to override the other forces.

But for most cases Change Velocity will due.

daniel.robert.campbell

I don't suppose there is a slightly more detailed version of your fix somewhere is there ORBZ? I think I understand what you're trying to say, but I'm not 100% clear.

daniel.robert.campbell

I guess I'll clarify slightly. I've tried the solution above, but it doesn't seem to work well for my situation.

I have an actor that moves around in the world.

I have containing walls around the scene to keep the player from escaping the world.

When I push the player character against the wall (holding down the movement key) the actor "jitters" rather than just coming to a stop.

Please help me GameSalad-Kenobi. You're my only hope.

daniel.robert.campbell

NVM. I ended up getting it fixed. All the settings with your suggestion was great ORBZ, but I had to make one more change to get it to work properly. I had to change the "bounciness" on my wall actor to 0. That did the trick.

ericzingeler

The move 0 with stacked resolved this issue for me. Thanks!

ProjectorX

Try turning down the bounciness.