Overview

The River Tool is a spline based tool for creating procedural rivers in unity. It also contains some fine tuning painting tools to make it fit every game world scenario.

Dependencies

The River Tool depends on the Unity Splines Package that you can add to your project by going to ”Window>PackageManager>UnityRegistry” and search for “Splines”.

How to use

Mesh Resolution Parameters

These parameters handle the procedural river mesh resolution. Try to find the best balance between performance and visual fidelity. The paint tools operate on the vertices so if you are planning on painting foam or anything else make sure you have enough vertices to do so.

• Tile Length The distance between the vertices in the direction of the flow.

Tile Length = 1.5

Tile Length = 5

• Width Segments The number of “strips” the mesh will have widthwise

Width Segments = 8

Width Segments = 3

River Settings

• Width The width of the river
• Material The material of the river. Should use “Polyart/Dreamscape/Water/River” shader.
• Trace For Terrain When this option is checked, it tries to trace on the xz axis for the Terrain in order to make the mesh follow it more naturally. This helps make the water feel like it actually fills the space and helps with some shader effects like Edge Foam. In order for the tracing to work the Terrain should be on a layer called “Terrain”.

Terrain Tracing On

Terrain Tracing Off