Procedural 2d Hex Based Terrain

Back in May of 2015 I made a post about making terrain with Perlin noise. Since then I have done a lot of experimenting with different techniques and algorithms. This was all mostly done for a project that I decided to quit working on about 4 months ago. Since at this point I'm pretty certain I'm not going to finish it, I decided I'll share the results of this experimenting and show off the mostly finished terrain generator.

Here is another image with an improved river algorithm

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Water Effect

This purpose of this post is to give some insight in to my 2d water effect. The effect was made in unity and consist of one C# script and two shaders. Additionally this effect can be be broken down in to two parts. The reflection and the distortion. First we will look at the reflection Reflection A lot of the work of the reflection is done through the C# script. The script creates a new game object with the sprite renderer of the original object, mirrors it, and puts our water reflection shader on it. You can see it below. A couple things to note with this technique. First, everything done in this script could be done manually through the editor. It is only for convenience and does not have to be done at run time. You might want to add [ExecuteInEditMode] to this script if you plan on using it. Second, this is kind of a crude way of doing things. Animations, lighting, or anything else that effect your sprite will not get reflected. For animations you could use the script to

2d Book Distortion

The game I am working on allows the player to read and create magic books. Because of this, I decided it would be useful to create different effects that look liked they were happening on the book's pages. To do this I needed a normal map. I figured a book would not be too hard to model so I made this model in blender. Book Model The model didn't have to be perfect, because I only need it to render a normal map viewing it from the top. Normal Map That is all the work I needed to do in blender. The art for the actual book is just for testing and I found it on open game art here . I fudged with the normal map and the book art a little bit in gimp until they lined up nicely. The rest of the work I did in unity. Everything that I wanted to appear on the pages I put on a separate layer, that I will be referring to as the page layer. This way I could render that layer with a separate camera. I ended up rendering that to a render texture that was applied to a

Chromatic Aberration

I made a chromatic aberration shader after not finding one I liked online. You can see the effect above on the sprite bottle to the right. My goal was to make a stylized chromatic aberration effect that I could apply to any sprite. The effect works by separating the rgb channels and displacing them in different directions. Below you can see the blue and red channels getting displaced in opposite directions on the x axis. You can control the displacement easily with a script to change how extreme the effect is. I personally think the effect looks best when used subtlety but I could see some cool applications were it is controlled dynamically and combined with a screen shake or something to show a large impact. Here is the effect applied more subtlety on a cool rogue sprite Here is a link to the shader Here is an example C# script to control it

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