Slow motion not working for physics

Phaser 3
1

Hello,
I have a hard time slowing time in a matter physics scene. this.matter.world.timeScale = 0.5 doesn’t do anything at all, the objects are moving with the unchanged velocity and colliding like in a normal timeScale. Have you any ideas what might be the problem?

1 Like
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I’ve had this problem too. It’s actually not a property of matter.world. The only way I could do it was put it in the gameObject’s Matter Body Config. That’s definitely not the proper solution, so I hope someone else knows more.

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Hi @Coatl,
This is the property you need:

this.matter.world.engine.timing.timeScale

Regards.

3 Likes
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This really seems to be what I need, but it doesn’t work well either. It doesn’t really do proper slow motion effect, because the friction stops the object much sooner than needs to be. (I set this.matter.world.engine.timing.timeScale = 4) And if I set friction to (0,0,0), it actually runs faster and ignores collisions. (The reason for ignoring collisions seems to be ignoring some physics updates.)

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For slow motion effect this.matter.world.engine.timing.timeScale must be between 0 and 1.

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Timescale = 0.25 doesn’t slow anything, and friction is weaker.

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I have tested it here and works as expected.
You can try to reproduce your specific case using the Phaser examples:
http://labs.phaser.io/index.html?dir=physics/matterjs/&q=

1 Like
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I can’t reproduce it there and have no idea why the objects behave so strange in my case. I am giving up for now, will try another approach. Thank you for showing me.