$16 for a *very* non-performant material? If this was intended for use in high-detail scenes, not meant for gameplay, one would generally just use a flipbook animation, or looping HD video texture (both of which are higher quality and available for free all over). I love options, but c'mon, that's pretty steep. $5, maybe. And you can loop in materials, using custom HLSL nodes. Also, there are better ways of doing this, all around. Somewhere on the forums, Ryan Brucks (of Epic fame) himself touched on this. I've personally been working on a cool water material (not "material blueprint", thankyouverymuch) and utility functions, and am close to the quality achieved here, sitting at ~180 instructions with everything "turned on". The kicker? It's pure procedural. No textures are needed. So this is cool, no doubt about that. In my humble opinion though, it's not "good". It doesn't run fast, and it's more complicated than it needs to be.
Lee is right - you can use a gradient effect when you vertex paint in your chosen 3d modelling platform (I've done it in max), meaning the wind effect shifts from nothing to maximum along the length of the leaf/branch/whatever.
I'm fairly certain you can vertex paint the bottoms of the foliage and control the movement using vertex colors along with the wind node. I did this in an earlier project and was able to create a scene with grass that moved less and less as it went down until stationary. I created the grass and painted the vertexes black to red (bottom to top) in Maya.
The company wants to ensure that asset makers are not infringing copyrights and trademarks. If you’re planning on adding some new content to Unreal Engine Marketplace, do check out this forum thread. The company is going to continue auditing assets and delete those, which might violate the terms and conditions.
Here’s what you need to be worried about:
Epic has always required that sellers have full rights to assets they are distributing on the Marketplace. The following language has been in the Marketplace Distribution Agreement since the store’s launch:
b. You represent and warrant that you have all intellectual property rights necessary for you to grant Epic the rights set forth in this Agreement, including all necessary patent, trademark, trade secret, copyright, or other proprietary rights, in and to your Content. If third-party materials are included in the Content, you represent and warrant that you have the right to distribute the third-party material in the Content. You agree that you will not submit material to the Marketplace that is copyrighted, protected by trade secret, or otherwise subject to third party proprietary rights, including patent, privacy, and publicity rights, unless you are the owner of such rights or have permission from the rightful owner to submit the material to the Marketplace.
c. You represent and warrant that none of your Content, Brand Features, or Developer Materials:
i. violates, infringes, or misappropriates any copyright, trademark, trade secret, trade dress, patent, publicity, privacy, or other right of any person;
The following is also included in the Marketplace Submission Guidelines:
15. Restricted Content
The Seller must have legal rights to redistribute all components of the content.
The content must not use any logos or branding for which the seller does not have appropriate legal rights.
Submissions must be free of any trademarked or copyrighted designs and/or materials (unless owned by or adequately licensed to the Seller).
If this doesn’t apply to you, you can sleep tight this night. If not, you’d better start making some drastic adjustments to your content.