From 5c28ec18e8870f8fb942bf42f4596f40b9acd633 Mon Sep 17 00:00:00 2001
From: Chris Wanstrath <chris@ozmm.org>
Date: Fri, 12 Dec 2025 08:39:35 -0800
Subject: [PATCH] pen up/pen down

---
 README.md  | 4 ++--
 bun.lock   | 1 +
 src/app.ts | 9 +++++++++
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index cf1c281..4211d7f 100644
--- a/README.md
+++ b/README.md
@@ -35,8 +35,8 @@ You can serve the `dist/` folder with any static file server, or even open `inde
 - `right n` - Turn right n degrees
 
 ### Pen Control
-- `penup` - Lift pen (don't draw)
-- `pendown` - Lower pen (draw)
+- `pen up` - Lift pen (don't draw)
+- `pen down` - Lower pen (draw)
 - `setcolor n` - Set pen color (0-15)
 - `setwidth n` - Set pen width
 - `clearscreen` - Clear the canvas
diff --git a/bun.lock b/bun.lock
index 48aefc7..e3171fe 100644
--- a/bun.lock
+++ b/bun.lock
@@ -1,5 +1,6 @@
 {
   "lockfileVersion": 1,
+  "configVersion": 0,
   "workspaces": {
     "": {
       "name": "fin",
diff --git a/src/app.ts b/src/app.ts
index fb12abd..3e8c829 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -196,6 +196,14 @@ class Turtle {
     turtleCtx.restore()
   }
 
+  pen(dir: string) {
+    switch (dir) {
+      case 'up': this.penup(); break
+      case 'down': this.pendown(); break
+      default: throw "pen only accepts up or down"
+    }
+  }
+
   penup() {
     this.penDown = false
   }
@@ -254,6 +262,7 @@ const globals = {
   back: async (n: number) => await turtle.back(n),
   left: async (n: number) => await turtle.left(n),
   right: async (n: number) => await turtle.right(n),
+  pen: (dir) => turtle.pen(dir),
   penup: () => turtle.penup(),
   pendown: () => turtle.pendown(),
   setcolor: (n: number) => turtle.setcolor(n),