# Some small questions, but I can't figure it out

**URL:** <https://discourse.threejs.org/t/some-small-questions-but-i-cant-figure-it-out/4859>\
**Category:** Questions\
**Tags:** events, animation, particles\
**Created:** [November 8, 2018, 1:08pm UTC](https://discourse.threejs.org/t/some-small-questions-but-i-cant-figure-it-out/4859 "2018-11-08T13:08:16Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![prisoner849](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/prisoner849/32/535_2.png) [@prisoner849](https://discourse.threejs.org/u/prisoner849)\
**Post date:** [November 8, 2018, 2:39pm UTC](https://discourse.threejs.org/t/some-small-questions-but-i-cant-figure-it-out/4859/3 "2018-11-08T14:39:29Z")

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For #1 and #3, you can use Tween.js.  
Have a look at this [showcase](https://discourse.threejs.org/t/in-the-orb-shaders/3286?u=prisoner849) and see how the fish is moving there.

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