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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+This is a LÖVE2D game development playground using Fennel (a Lisp dialect that compiles to Lua). The repository contains multiple game/project experiments:
+
+- **hello_world**: Basic LÖVE2D + Fennel template with REPL support
+- **hello_world_lua**: Basic LÖVE2D in pure Lua (reference implementation)
+- **one_line**: A pixel drawing application demonstrating canvas manipulation
+- **two_player_cleaning_game**: Two-player game (primary focus for development)
+
+## Key Architecture
+
+### Fennel + LÖVE2D Setup
+
+Fennel is a Lisp-like language that compiles to Lua at runtime. Each project directory shares common bootstrap files via symlinks:
+
+- **fennel-1.5.3.lua** (root): The Fennel compiler itself
+- **fennel_bootstrap.lua** (root): Sets up Fennel module loading and compiles `.fnl` files on-the-fly
+
+Each project directory contains:
+- **main.fnl**: The Fennel source code (user-editable)
+- **main.lua** → symlink to `../fennel_bootstrap.lua`: Entry point that Lua/LÖVE2D loads
+- **fennel.lua** → symlink to `../fennel-1.5.3.lua`: Fennel compiler reference
+
+### How It Works
+
+1. LÖVE2D loads `main.lua` (the bootstrap file)
+2. Bootstrap loads the Fennel compiler and sets up a custom module loader
+3. Module loader intercepts `require("main.fnl")` and compiles it via Fennel at runtime
+4. Compiled Fennel code executes with full LÖVE2D API access
+
+### LÖVE2D Lifecycle
+
+Games define lifecycle callbacks (all optional):
+- **love.load()**: Called once at startup
+- **love.update()**: Called every frame (~60fps by default)
+- **love.draw()**: Called every frame after update, render graphics here
+- **love.keypressed(key)**: Keyboard input handler
+- **love.handlers.stdin(line)**: REPL input for live evaluation (used in hello_world template)
+
+## Development Workflow
+
+### Running a Game
+
+```bash
+love ./two_player_cleaning_game
+```
+
+LÖVE2D must be installed and in your PATH. See [Getting Started](https://love2d.org/wiki/Getting_Started) for installation.
+
+### Live Coding / REPL
+
+The hello_world template includes stdin REPL support. While a game is running:
+- Type Fennel code at the terminal
+- Code is evaluated via `fennel.eval()` and results printed
+
+To enable in other projects, add this to `love.load()`:
+
+```fennel
+(: (love.thread.newThread "require('love.event')
+while 1 do love.event.push('stdin', io.read('*line')) end") :start)
+
+(fn love.handlers.stdin [line]
+  (let [(ok val) (pcall fennel.eval line)]
+    (print (if ok (fennel.view val) val))))
+```
+
+## Fennel Language Basics
+
+### Syntax Patterns
+
+```fennel
+; Variables
+(local name "value")
+(var counter 0)
+
+; Functions
+(fn my-func [arg1 arg2]
+  (+ arg1 arg2))
+
+; Tables/Objects
+(local person {
+  :name "Alice"
+  :age 30
+  :greet (fn [self] (print (.. self.name " says hello")))
+})
+
+; Common control flow
+(when condition
+  (do-something))
+
+(if condition
+  (then-branch)
+  (else-branch))
+
+(match value
+  "a" (handle-a)
+  "b" (handle-b))
+
+; Iteration
+(each [k v (pairs table)]
+  (print k v))
+
+(for [i 1 10]
+  (print i))
+```
+
+### Interop with Lua
+
+Call Lua functions naturally:
+
+```fennel
+(love.graphics.setColor 1 0 0) ; red
+(love.window.getMode)          ; returns width, height, flags table
+```
+
+Access nested Lua objects with colon `:` syntax:
+
+```fennel
+(: canvas-obj :setFilter "nearest" "nearest")  ; equivalent to canvas_obj:setFilter(...)
+```
+
+## Project-Specific Notes
+
+### two_player_cleaning_game
+
+Currently uses the hello_world template structure. Development focus:
+- Extend main.fnl with game logic (player movement, cleanup mechanics, etc.)
+- Reference one_line/main.fnl for canvas/graphics patterns if needed
+- Use LÖVE2D physics (love.physics) or collision detection as needed
+
+### Symlink Pattern
+
+Do **not** modify symlinked files (main.lua, fennel.lua) — modify main.fnl instead. If adding new modules, create them as separate .fnl files in the project directory.
+
+## Common Development Tasks
+
+### Adding a new module/file
+
+1. Create `my_module.fnl` in the project directory
+2. Require it: `(local my-module (require "my_module"))`
+3. The bootstrap module loader will auto-compile it
+
+### Debugging
+
+- Use `(print (fennel.view value))` to inspect tables and complex values
+- stdin REPL (hello_world template) allows live evaluation for quick tests
+- LÖVE2D console output is visible in the terminal where you ran `love`
+
+### Working with Graphics
+
+LÖVE2D graphics API examples:
+
+```fennel
+(love.graphics.setColor 1 0 0)               ; set color to red
+(love.graphics.rectangle "fill" x y w h)    ; draw filled rectangle
+(love.graphics.circle "line" x y radius)    ; draw circle outline
+(love.graphics.print text x y)               ; draw text
+(love.graphics.draw drawable x y)           ; draw canvas/image
+```
+
+## References
+
+- **LÖVE2D API**: https://love2d.org/wiki/Main_Page
+- **Fennel Language**: https://fennel-lang.org/
+- **Fennel Plugin**: The compiler is shipped in this repo; no external install needed beyond LÖVE2D
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--- a/two_player_cleaning_game/main.fnl
+++ b/two_player_cleaning_game/main.fnl
@@ -1,4 +1,12 @@
+(var player-sprite nil) ; 20x20 pixels
+(local game-state {
+  :player-pos [0 0]
+})
+
 (fn love.load []
+  (love.window.setMode 600 640)
+
+  (set player-sprite (love.graphics.newImage "assets/player_001.png"))
   ;; start a thread listening on stdin
   (: (love.thread.newThread "require('love.event')
 while 1 do love.event.push('stdin', io.read('*line')) end") :start))
@@ -8,8 +16,34 @@ while 1 do love.event.push('stdin', io.read('*line')) end") :start))
   (let [(ok val) (pcall fennel.eval line)]
     (print (if ok (fennel.view val) val))))
 
+
+;; drawing
+(lambda color [full-r full-g full-b]
+  (let [(r g b) (love.math.colorFromBytes full-r full-g full-b)]
+  [r g b]
+))
+
+(local off-white (color 237 230 200))
+(local black [0 0 0])
+
+(fn draw-game-outline []
+  (love.graphics.setColor (unpack black))
+  (love.graphics.rectangle "line" 50 50 500 500))
+
+(fn draw-player []
+  (love.graphics.setColor 1 1 1)  ; reset color to white (no tinting)
+  (love.graphics.draw player-sprite 50 50 0 1.25 1.25))
+
 (fn love.draw []
-  (love.graphics.print "Hello from Fennel!\nPress any key to quit" 10 10))
+  ;; clear the screen and set bg to off white
+  (love.graphics.clear)
+  (love.graphics.setColor (unpack off-white))
+  (love.graphics.rectangle "fill" 0 0 600 640)
+
+  (draw-player)
+  (draw-game-outline)
+)
+  ; (love.graphics.print "Hello from Fennel!\nPress any key to quit" 10 10))
 
 (fn love.keypressed [key]
   (love.event.quit))