Added docs and layer support for UDP

README.md

@@ -16,6 +16,15 @@ npm install
 npm start
 ```
 
+## UDP Controls
+
+Dotgrid can be controlled by UDP via the port `49160`. It expects messages of 6 characters.
+
+- **layer** `0/1/2`
+- **type** `l/a/r/c`
+- **from** `0-z``0-z`
+- **to** `0-z``0-z`
+
 ## Extras
 
 - This application supports the [Ecosystem Theme](https://github.com/hundredrabbits/Themes).

desktop/sources/scripts/listener.js

@@ -18,6 +18,8 @@ function Listener (dotgrid) {
   }
 
   function operate (data) {
+    if(!dotgrid.tool.layers[data.layer]){ return }
+    dotgrid.tool.index = data.layer
     dotgrid.tool.addSegment(data.type, [data.from, data.to])
     dotgrid.renderer.update()
   }