◆◄ 2.5D Terrain (3D mesh from 2D curves) ►◆

Hi all,
I have just relased my asset which helps you spice up 2.5D games with some sweet 3D terrain.



How does it work?
Easy: you draw a 2D shape and from it this tool generates a 3D mesh and PolygonCollider2D for you. Best just watch the video

Asset Store Link:
https://assetstore.unity.com/packages/slug/220783

Features:
● 3D Mesh from 2D Splines (with holes)
● 2D Collider Generator
● Procedural Foliage Generator
● Full Source Code included









In case you wonder what you can do with it. Pretty much all the levels in this game (forum link) have been made using this tool.

 

hi, I purchased the asset 2.5D Terrain you developed.
There are amazing ideas for 2d and 2.5d game scenarios, and I'm having some trouble. Since I'm using a vertex-shaded shader, I want the model to generate a higher number of uniform meshes. This way I was able to do vertex painting.
Whether in the new development plan, it is possible to adjust the parameters of the number of generated model meshes in the three axes of xyz.
Figure 2 below is the effect diagram of the expected grid generated by me.

 

Hi,
thank you for using the terrain tool. I see so you want to have a mesh with uniformly distributed vertices to get some higher "resolution" for vertex painting. It's an interesting idea yet at the moment it's not easy to do as the tool right now does try to do quite the opposite (reduce vertices as best it can). Also you would run into trouble quickly with areas of high curvature. No quick feature I am afraid. I am currently busy with other stuff but I'll put it on my "things to think about" list, no promises though.

However, it should be possible to do even with the current tool. From the top of my head here is how I would approach a quick solution: The asset already has the ability to add custom vertices (it's described in the manual). You could absue this and just add a ton of them via code to increase resolution. So the steps would be:
1) Generate the mesh as you are doing now.
2) Generate a 3D mesh collider from the mesh.
3) Do some raycasts in a regular grid from every side and record the hit positions.
4) Add each recorded position as a custom vertex.
5) Generate again.

I think that should work, though I am not sure how performant that will be.

 

thanks geo
Yes, the vertex shader needs more points of "resolution".
I will try the method you said, but my code level is very low. It can be very expensive to add points one by one.
However, I think that if you can increase the grid distribution, it is also a way to expand the various requirements of the generative model. It would be really great to have these parameters. More meshes means that you can do a lot of terrain height changes and adjustments, which is a very efficient way to build levels.

 

I think adding the points won't be the main problem (it's just a list) but am just not sure how the clipper and tesselation libs will handle this many internal points (not something I have testes). I also noticed the points method will only work for the sides. The middle part is not effected by that but it can be changed via code too.

Look into MeshMiddleSegment.cs. There you will find 4 points (p0 to p3). In between those 4 points two triangles (tri1 and tri2) are made. There you can add as many tris betwen those 4 points as you want. This would be an easy way to increase the middle resolution. The sides may be tricky though (there you would need the points I mentioned).

Here is a quick sketch showing what I mean (you could increase the subdivision of these middle patches in MeshMiddleSegment.cs). The middle is just an endless loop of these p0-p3 quads.


Hope this helps.

 

sorry i'm here again
Yes, I would like to increase the amount in the middle of the mesh, so that I can freely make various changes to the ground vertices.
I've tried to understand this part of the generative and cyclic process, and I admit I've failed, not knowing enough about this part.
Modified the number of segments, etc., resulting in an array error, etc.

 

Hi,
I have been able to take a quick look. Here is a version which at least allows you to increase the middle resolution on the z-axis. There is no UI so you will have to just change it in code, like this:



Just replace the file with the one I attached and change the zDivisions parameter.

Hope this helps
Anything more elaborate would require more time and I can't do it right now (sry).

 

Thank you very much for the help of geo. This terrain plug-in is the best one for 2.5D in my opinion. I will study and add an adjustable parameter of zDivisions to the interface. Go and understand your improved code writing.
Now the resolution can basically be adjusted to a suitable distribution. ^-^