Suggestion / Idea Functionality review for a specific project

[josemendez]

Hello , I'm working on a hyper-casual simulation game for Android and IOS. 
I'm reaching out to you about Obi assets on Unity Store to make sure that the assets can fulfill our specific needs for this simulation project.

In this project we need to simulate vacuum packing. in the vacuum step there must be a plastic sheet that covers different objects (fruits , clothes , ..) and physically and perfectly sit on them as a piece of cloth would. The only difference is that it will have a special shader to simulate a plastic sheet. 

In the next step the player interacts with the plastic sheet and can start vacuuming or pause and resume it. in the process the plastic sheet gets tight around the objects (just like vacuuming in real life when the air gets removed from the plastic film package) so we need that specific plastic sheet to be able to simulate that effect and be intractable.

I put an image here just to make things clear

Hi,

You won't be able to simulate this with Obi, at least not easily:

- We don't simulate air dynamics inside a cloth piece. "Air" inside a watertight mesh is simulated as a single scalar quantity instead, so vacuum effects can't be simulated out of the box.

- It is a particle-based engine, so collision detection is performed using particles. You won't ever be able to get a perfectly tight fit of the wrapped plastic over its contents, there will always be a gap between them (its size = particle radius). Also, any contents of the plastic bag that are small relative to particle size will miss collisions, forcing you to choose between a large gap between the surface of the bag and the contents, or good collision detection.

kind regards,