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enter image description here

You can see the particles in the above image, but, despite the cube having had "collision" properties in the settings, it won't block the particles?

enter image description here

...and here's the physics settings I'm using. enter image description here

Here is the .blend file: https://drive.google.com/file/d/0ByScwSCTIaUGUkZoTXhoTFhjU3c/edit?usp=sharing Many thanks

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  • $\begingroup$ Could you post a screenshot of the physics tab, too (last tab on the right)? I can't download the blendfile where I am, but I think those physics settings are the only other thing I'd need to see. $\endgroup$
    – Matt
    Commented Dec 30, 2013 at 20:57
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    $\begingroup$ @Matt Sure Here: pbrd.co/1bxDXD4 $\endgroup$
    – Turbo
    Commented Dec 30, 2013 at 21:00
  • $\begingroup$ Hmmm...that's not what I expected to see... I don't think any of those settings should be causing any problems. You might also check the physics settings on the particles. IIRC, there's a way to specify whether or not the particles interact with collision meshes. Another thing to check is that you are using enough subframes (usually not necessary, but for fast motion, it can help to calculate 2-3 subframes). $\endgroup$
    – Matt
    Commented Dec 30, 2013 at 21:12
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    $\begingroup$ I tried your blend in 2.69, and the cube is blocking the particles for me as you expected, even with 0 subframes for the particles. Is it possible your particles are "Baked" and you need to free them (in your particle system in the Cache settings)? $\endgroup$
    – Phillip Kinkade
    Commented Dec 30, 2013 at 21:35
  • $\begingroup$ @PhillipKinkade Sorry, I couldn't answer yesterday, but thanks for your suggestion! I'll have a look at the answer below. $\endgroup$
    – Turbo
    Commented Dec 31, 2013 at 8:08

1 Answer 1

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This reproducable as Phillip Kinkade mentioned, when the particle system animation was baked without the collision object, later adding wouldn't make them collide.

  1. Free Bake
  2. Position your collision object
  3. Bake

enter image description here

After the three steps above no more particles will go through the cube:

enter image description here

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