From fc46080e4be4b2320433d00c243584cdccc65707 Mon Sep 17 00:00:00 2001
From: Devine Lu Linvega <aliceffekt@gmail.com>
Date: Sun, 13 Jan 2019 08:56:55 +1200
Subject: [PATCH] Added docs and layer support for UDP

---
 README.md                           | 9 +++++++++
 desktop/sources/scripts/listener.js | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/README.md b/README.md
index 8e00049..60a9760 100644
--- a/README.md
+++ b/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).
diff --git a/desktop/sources/scripts/listener.js b/desktop/sources/scripts/listener.js
index f6b796c..d68cc2f 100644
--- a/desktop/sources/scripts/listener.js
+++ b/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()
   }