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How to make a collision for particle system?


I am a beginner in UE4, and I try to learn how to make a realistic rocket (i will make a short video of rocket launch). So I created a particle system (rocket fire) and put it into Blueprint (with the rocket mesh). Here how it looks like http://joxi.ru/4AkpyvEFy3NZxr

I made the collision in Particle system http://joxi.ru/V2VBDavsxyEjJ2 and tried made the rocket mesh static/movable

But the particles pierce the rocket mesh http://joxi.ru/LmGEa8pfe64abA .

Please help me to put the particles (fire) just inside of the rocket and not allow them to come out from on top and sides - i need the fire just from bottom.

PS: i know that my particles (rocket fire) is not perfect, and they are huge (every of them) but it was the only way ro make fire realistic.. with my level of skills :) And sorry for my bad English

Product Version: UE 4.17
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asked Nov 20 '17 at 10:46 AM in Rendering

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Try set values for actor collision as here

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answered Nov 20 '17 at 12:41 PM

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avatar image IYKH Nov 20 '17 at 01:12 PM

Thank for your answer! There is no "Weather" collision type in my version( But I turned on other ones and it still does not work( Maybe the problem is that particles are very big in "Z" http://joxi.ru/D2PDK4yspOdgO2 (it is 500 now), but if i make it like 50 - it looks like http://joxi.ru/vAW3X4eU1wkPkA - it does not look like rocket fire.. Maybe there are other options to make a "fast" rocket fire? Cause if the problem is in the size of particals, it could be solved without touching collisions.. By the way, the options I installed right now are: Spawn: 200 Initial velocity: -500 Const Acceleration: - 500 (in "Z" cause I need vertical rocket fire)

avatar image IYKH Nov 20 '17 at 01:19 PM

I decreased the size, but the other problems appeared( http://joxi.ru/v29WL4yF3xGoEr - it curves permanenrly(

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i think socket is solution for PS emmiter placement .. you can adjust socket position and rotation according to mesh and then just attach particle system emitter into socket with default transformation .. hope it hepls you somehow ;)

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answered Aug 30 '18 at 12:47 PM

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