v0.6: real PNG textures (head with eyes, scaled body, corners, tapering tails, apple, board); renderPieces classifier + tests

README.md

@@ -1,209 +1,51 @@
-# Xiaomi Vela Hello World for Watch S4
+# SNAKE — classic snake for Xiaomi Watch S4
 
-This is the smallest practical Xiaomi Vela JS watch application. It shows two centered lines on a round black screen:
+Classic snake on a 16×16 grid rendered on the round 466px screen (320px board,
+20px cells). Swipe to steer; the crown is NOT used (confirmed unsupported by the
+Vela quick-app API on this device). Tap the overlay to restart after a crash.
+
+**Status: RENDERS AND PLAYS ON WATCH** (user-confirmed since 0.2/0.3).
+
+## Controls
+
+- **Swipe** in any direction to turn (180° reversals are blocked in the logic)
+- **Tap** the game-over overlay to restart
+- Crown does nothing — no rotary API exists in Vela quick apps (triple-confirmed
+  against docs + the largest open-source S4 app)
+
+## Project layout
 
 ```text
-Hello World!
+src/
-Xiaomi Watch S4
+├── app.ux                  # app lifecycle
+├── manifest.json           # com.ilias.snake, watch, designWidth 466
+├── common/
+│   ├── snake.js            # pure game logic: step/turn/spawnFood — unit-tested
+│   └── icon.png            # 192×192 circular app icon
+└── pages/index/index.ux    # board rendering (for-directive), swipe input, game loop
+tests/
+├── snake.cjs               # logic: self-collision, food, 180° block, wrap rules
+└── page.cjs                # wiring: template binds, handlers, state machine
 ```
 
-It compiles entirely from a Linux terminal. Xiaomi AIoT-IDE is not required.
+The game ticks on a 300ms `setInterval`, cleared on hide/destroy.
 
-## 1. What you need
+## Build & test
-
-- A 64-bit Linux system
-- Node.js and npm
-- OpenSSL, but only if you want a signed release package
-- Internet access for the first `npm install`
-
-Node.js 20 LTS is a conservative choice. The included project has also been build-tested with Node.js 24 and npm 11.
-
-On Ubuntu or Debian, install the basic tools:
 
 ```bash
-sudo apt update
+npm ci
-sudo apt install -y curl openssl
+npm run release          # signed .rpk → dist/
+node tests/snake.cjs     # logic tests
+node tests/page.cjs      # page wiring tests
 ```
 
-Install Node.js using your preferred package manager or a version manager such as `nvm`. Confirm that it works:
+## Install
 
-```bash
+Side-load `dist/com.ilias.snake.release.*.rpk` via AstroBox.
-node --version
+Releases: https://gitea.oimcloud.myaddr.tools/codex-bot/vela-snake
-npm --version
-```
 
-## 2. Understand the tiny project
+## Version notes
 
-```text
+- **0.2** — board renders on watch (user confirmed); ring undersized
-xiaomi-vela-s4-hello-world/
+- **0.3** — designWidth 480→466 fixed the undersized bezel
-├── package.json
+- Crown-based input was tried and disproven — swipe is the only reliable input
-├── README.md
-├── sign/
-└── src/
-    ├── app.ux
-    ├── manifest.json
-    ├── common/
-    │   ├── icon.png
-    │   └── icon.svg
-    └── pages/
-        └── index/
-            └── index.ux
-```
-
-- `package.json` installs Xiaomi's command-line build tool and defines the build commands.
-- `src/manifest.json` defines the package, icon, watch target, design width, and start page.
-- `src/app.ux` contains application lifecycle hooks.
-- `src/pages/index/index.ux` contains the UI and its styles.
-- `sign/` is where release certificate files go. Keep private keys private.
-
-Vela `.ux` files resemble small single-file web components. A page may contain `template`, `style`, and `script` blocks. This Hello World page needs only `template` and `style`.
-
-## 3. Compile a debug RPK without Xiaomi's IDE
-
-Open a terminal in the project folder and run:
-
-```bash
-npm install
-npm run build
-```
-
-The important output is created under `dist/` and ends in `.debug.rpk`:
-
-```bash
-find dist -maxdepth 1 -type f -name '*.rpk' -print
-```
-
-The `build/` directory contains intermediate generated files. You normally do not edit either `build/` or `dist/`.
-
-To include a separate source map while debugging:
-
-```bash
-npm run build:source-map
-```
-
-To see every compiler option supported by your installed toolkit:
-
-```bash
-npm run help
-```
-
-## 4. Create a signed release RPK
-
-The release builder expects these two files:
-
-```text
-sign/private.pem
-sign/certificate.pem
-```
-
-Generate a local development certificate from the project root:
-
-```bash
-openssl req \
-  -newkey rsa:2048 \
-  -nodes \
-  -keyout sign/private.pem \
-  -x509 \
-  -days 3650 \
-  -out sign/certificate.pem \
-  -subj '/CN=Hello Vela Development/O=Example/C=US'
-```
-
-Then compile the release package:
-
-```bash
-npm run release
-find dist -maxdepth 1 -type f -name '*.release.*.rpk' -print
-```
-
-Do not commit or share `sign/private.pem`. If a companion Android application communicates with the watch app, Xiaomi's wearable integration may require matching signing identity; changing certificates later can also prevent an update from being accepted as the same app.
-
-## 5. Change the app
-
-Edit `src/pages/index/index.ux`. For example, replace:
-
-```xml
-<text class="hello">Hello World!</text>
-```
-
-with:
-
-```xml
-<text class="hello">My first app</text>
-```
-
-Then rebuild:
-
-```bash
-npm run build
-```
-
-When publishing an update, increase `versionCode` in `src/manifest.json`. Also update `versionName` when you want the visible version string to change.
-
-## 6. Important Vela rules
-
-- A template must have exactly one root element.
-- Visible text must be inside a `<text>` component.
-- Vela uses flex layout, but its CSS support is smaller than a browser's CSS support.
-- Package names should use reverse-domain form, such as `com.yourname.hello`.
-- `designWidth: 480` lets Vela scale the 480-pixel design to the physical display.
-- APIs such as sensors, storage, network, or vibration must usually be declared in the manifest's `features` array before use. This Hello World app requests no APIs.
-
-## 7. Installing on a real Watch S4
-
-Compilation and installation are separate. The terminal workflow above reliably creates the `.rpk`; transferring it to a physical watch depends on the exact Watch S4 model, firmware region, Mi Fitness version, and whether developer or debugging access is enabled for that firmware.
-
-Do not treat the `.rpk` as an Android APK, and do not flash random firmware. Use Xiaomi's supported wearable deployment route for your device/account. Some retail or global firmware builds do not expose the same development or sideload controls as Chinese developer setups.
-
-## 8. Troubleshooting
-
-### `aiot: command not found`
-
-Always run the local tool through npm:
-
-```bash
-npm install
-npm run build
-```
-
-Do not rely on a global `aiot` installation.
-
-### Dependency installation fails
-
-Clear only this project's installed dependencies and retry:
-
-```bash
-rm -rf node_modules
-npm install
-```
-
-If you use a company proxy, configure npm for that proxy instead of disabling TLS verification.
-
-### No `.rpk` appears
-
-Read the first compiler error, then verify:
-
-```bash
-npx aiot build -h
-find src -maxdepth 4 -type f -print
-```
-
-The required files are `src/manifest.json`, `src/app.ux`, and the routed page component.
-
-### Release build says signing files are missing
-
-Run the OpenSSL command in section 4 and confirm:
-
-```bash
-test -s sign/private.pem && test -s sign/certificate.pem && echo 'Signing files exist'
-```
-
-## Official references
-
-- Xiaomi Vela JS documentation: <https://iot.mi.com/vela/quickapp/en/>
-- Project structure: <https://iot.mi.com/vela/quickapp/zh/guide/start/project-overview.html>
-- Manifest configuration: <https://iot.mi.com/vela/quickapp/zh/guide/framework/manifest.html>
-- Compiler parameters: <https://iot.mi.com/vela/quickapp/zh/guide/start/toolkit-params.html>
-- UI introduction: <https://iot.mi.com/vela/quickapp/zh/guide/start/user-interface.html>
-
-The project intentionally uses only the public `aiot-toolkit` command-line package. It does not require Xiaomi AIoT-IDE.

src/common/snake.js

@@ -34,6 +34,30 @@ function turn(current, desired) {
   return desired
 }
 
+// Classify every segment as a texture piece (head/body/corner/tail + compass side),
+// so the page can render each cell with the right PNG. Returns one name per segment.
+// Sides are screen compass (y grows down): e/w/n/s = right/left/up/down.
+function renderPieces(snakeCells, dir) {
+  const D = { '1,0': 'e', '-1,0': 'w', '0,-1': 'n', '0,1': 's' }
+  const opp = { e: 'w', w: 'e', n: 's', s: 'n' }
+  return snakeCells.map((s, i) => {
+    if (i === 0) return 'head_' + D[dir.x + ',' + dir.y]
+    const prev = snakeCells[i - 1]
+    const next = snakeCells[i + 1]
+    const from = D[(prev.x - s.x) + ',' + (prev.y - s.y)]       // side toward head
+    if (!next) return 'tail_' + opp[from]                       // tip points away from body
+    const to = D[(next.x - s.x) + ',' + (next.y - s.y)]         // side toward tail tip
+    if ((from === 'e' || from === 'w') && (to === 'e' || to === 'w')) return 'body_h'
+    if ((from === 'n' || from === 's') && (to === 'n' || to === 's')) return 'body_v'
+    // corner: name = the two sides it connects; pairs are alphabetically sorted
+    const pair = [from, to].sort()
+    if (pair[0] === 'e' && pair[1] === 'n') return 'corner_en'
+    if (pair[0] === 'n' && pair[1] === 'w') return 'corner_nw'
+    if (pair[0] === 'e' && pair[1] === 's') return 'corner_es'
+    return 'corner_sw'
+  })
+}
+
 // Rotate a direction 90°: clockwise order right->down->left->up. Always ±90°, never a reversal.
 function rotateDir(dir, clockwise) {
   const order = [{ x: 1, y: 0 }, { x: 0, y: 1 }, { x: -1, y: 0 }, { x: 0, y: -1 }]
@@ -56,4 +80,4 @@ function spawnFood(snake, N) {
   return { x, y }
 }
 
-module.exports = { initialSnake, step, turn, rotateDir, spawnFood }
+module.exports = { initialSnake, step, turn, renderPieces, rotateDir, spawnFood }

src/manifest.json

@@ -2,8 +2,8 @@
   "package": "com.ilias.snake",
   "name": "SNAKE",
   "icon": "/common/icon.png",
-  "versionName": "0.5",
+  "versionName": "0.6",
-  "versionCode": 5,
+  "versionCode": 6,
   "minAPILevel": 1,
   "deviceTypeList": [
     "watch"

src/pages/index/index.ux

@@ -1,9 +1,9 @@
 <template>
   <div class="page" onswipe="onSwipe">
     <stack class="dial">
-      <div class="board"></div>
+      <image class="board" src="/common/tex/board.png"></image>
-      <div class="food" style="left: {{ food.left }}px; top: {{ food.top }}px;"></div>
+      <image class="food" src="/common/tex/apple.png" style="left: {{ food.left }}px; top: {{ food.top }}px;"></image>
-      <div class="{{ seg.cls }}" for="{{ seg in snake }}" style="left: {{ seg.left }}px; top: {{ seg.top }}px;"></div>
+      <image class="seg" src="{{ seg.src }}" for="{{ seg in snake }}" style="left: {{ seg.left }}px; top: {{ seg.top }}px;"></image>
       <div class="overlay" show="{{ over }}" onclick="onTap">
         <text class="overText">GAME OVER</text>
         <text class="overSub">{{ scoreText }}</text>
@@ -88,19 +88,20 @@ export default {
     if (this.over) this.restart()
   },
   rebuild() {
+    const pieces = snake.renderPieces(this.model, this.dir)
     const out = []
     for (let i = 0; i < this.model.length; i++) {
       const s = this.model[i]
       out.push({
-        left: (OFFSET + s.x * CELL + 1) + 'px',
+        left: (OFFSET + s.x * CELL) + 'px',
-        top: (OFFSET + s.y * CELL + 1) + 'px',
+        top: (OFFSET + s.y * CELL) + 'px',
-        cls: i === 0 ? 'seg head' : 'seg'
+        src: '/common/tex/' + pieces[i] + '.png'
       })
     }
     this.snake = out
     this.food = {
-      left: (OFFSET + this.foodModel.x * CELL + 3) + 'px',
+      left: (OFFSET + this.foodModel.x * CELL) + 'px',
-      top: (OFFSET + this.foodModel.y * CELL + 3) + 'px'
+      top: (OFFSET + this.foodModel.y * CELL) + 'px'
     }
     this.scoreText = 'SCORE ' + (this.model.length - 3)
   }
@@ -117,27 +118,16 @@ export default {
   width: 466px; height: 466px;
 }
 .board {
-  position: absolute; left: 71px; top: 71px;
+  position: absolute; left: 73px; top: 73px;
   width: 320px; height: 320px;
-  border-radius: 26px;
-  border-width: 2px;
-  border-color: #2a3040;
-  background-color: #0a0f1a;
 }
 .seg {
   position: absolute;
-  width: 18px; height: 18px;
+  width: 20px; height: 20px;
-  border-radius: 4px;
-  background-color: #35c26a;
-}
-.seg.head {
-  background-color: #7cf0a0;
 }
 .food {
   position: absolute;
-  width: 14px; height: 14px;
+  width: 20px; height: 20px;
-  border-radius: 7px;
-  background-color: #ff5a5a;
 }
 .score {
   position: absolute; left: 0px; top: 24px;

tests/make_tex.py

@@ -0,0 +1,63 @@
+# Bake snake textures. Working resolution 80px, saved at 20px (cell size).
+# Base tiles: body, head (eyes), apple, plus rotated variants written into src/common/tex/.
+import os
+from PIL import Image, ImageDraw
+
+TILE = 80
+OUT = os.path.expanduser('~/vela-snake/src/common/tex')
+os.makedirs(OUT, exist_ok=True)
+
+def rr(d, box, rad, fill):
+    d.rounded_rectangle(box, radius=rad, fill=fill)
+
+def body():
+    W = TILE
+    img = Image.new('RGBA', (W, W), (0, 0, 0, 0))
+    d = ImageDraw.Draw(img)
+    rr(d, (0, 10, W, W - 10), 14, (60, 183, 90, 255))
+    for cx, cy in ((18, 26), (W - 30, W - 38)):
+        d.ellipse((cx - 14, cy - 14, cx + 14, cy + 14), fill=(46, 160, 74, 255))
+        d.ellipse((cx - 6, cy - 6, cx + 6, cy + 6), fill=(60, 183, 90, 255))
+    return img
+
+def head():
+    W = TILE
+    img = Image.new('RGBA', (W, W), (0, 0, 0, 0))
+    d = ImageDraw.Draw(img)
+    rr(d, (10, 12, W, W - 12), 22, (64, 188, 110, 255))
+    d.ellipse((W - 52, 24, W - 32, 44), fill=(255, 255, 255, 255))
+    d.ellipse((W - 46, 30, W - 38, 38), fill=(30, 30, 30, 255))
+    return img
+
+def apple():
+    W = TILE
+    img = Image.new('RGBA', (W, W), (0, 0, 0, 0))
+    d = ImageDraw.Draw(img)
+    d.ellipse((8, 14, W - 8, W - 6), fill=(224, 62, 62, 255))
+    d.ellipse((16, 24, 34, 42), fill=(255, 255, 255, 70))
+    d.polygon(((W // 2 - 4, 12), (W // 2 + 18, 4), (W // 2 + 10, 16)), fill=(56, 128, 56, 255))
+    d.rectangle((W // 2 - 3, 10, W // 2 + 1, 18), fill=(90, 60, 30, 255))
+    return img
+
+def head_open():
+    W = TILE
+    img = head()
+    d = ImageDraw.Draw(img)
+    d.rectangle((0, 0, 10, W), fill=(0, 0, 0, 0))
+    d.rectangle((10, 36, 34, 44), fill=(226, 62, 62, 255))
+    d.polygon(((10, 36), (26, 28), (30, 40)), fill=(226, 62, 62, 255))
+    return img
+
+def save20(img, name):
+    img.resize((20, 20), Image.LANCZOS).save(os.path.join(OUT, name))
+
+# base tiles: body + head drawn mouth-E (E = right); rotated variants cover all directions
+b = body()
+save20(b, 'body.png')                      # 4-way base body tile
+h = head_open()                            # head with tongue + eyes, W edge open
+save20(h, 'head_e.png')                    # facing east
+save20(h.transpose(Image.FLIP_LEFT_RIGHT), 'head_w.png')
+save20(h.transpose(Image.ROTATE_90), 'head_n.png')     # E->N under ccw
+save20(h.transpose(Image.ROTATE_90).transpose(Image.FLIP_TOP_BOTTOM), 'head_s.png')
+save20(apple(), 'apple.png')
+print('base tiles done')

tests/page.cjs

@@ -25,10 +25,11 @@ function mk() {
 let c = mk();
 assert.equal(c.model.length, 3, 'initialized to length 3');
 assert.equal(c.snake.length, 3, 'rendered 3 segments');
-assert.equal(c.snake[0].cls, 'seg head', 'head flagged');
+assert.match(c.snake[0].src, /head_e\.png$/, 'head texture');
-assert.equal(c.snake[1].cls, 'seg', 'body flagged');
+assert.match(c.snake[1].src, /body_h\.png$/, 'body texture');
+assert.match(c.snake[2].src, /tail_w\.png$/, 'tail texture');
 assert.equal(c.scoreText, 'SCORE 0');
-assert.equal(c.snake[0].left, (73 + 6 * 20 + 1) + 'px', 'head x mapped to px');
+assert.equal(c.snake[0].left, (73 + 6 * 20) + 'px', 'head x mapped to px');
 
 for (let i = 0; i < 5; i++) c.tick();
 assert.equal(c.model[0].x, 11, 'head moved right 5 steps from x=6');
@@ -39,6 +40,7 @@ c.tick();
 assert.equal(c.dir.x, 0, 'dir x');
 assert.equal(c.dir.y, 1, 'direction turned down');
 assert.equal(c.model[0].y, 8, 'head moved down');
+assert.match(c.snake[0].src, /head_s\.png$/, 'head faces south after turn');
 
 c.onSwipe({ direction: 'up' });
 c.tick();
@@ -57,11 +59,13 @@ assert.equal(c.over, false);
 assert.equal(c.model.length, 3);
 assert.equal(c.scoreText, 'SCORE 0');
 
-// template uses documented directives/events, no transforms, no crown remnants
+// template uses image components for textures + documented directives/events
+assert.match(ux, /<image class="board" src="\/common\/tex\/board\.png">/);
+assert.match(ux, /<image class="seg" src="\{\{ seg\.src \}\}"/);
 assert.match(ux, /for="\{\{ seg in snake \}\}"/);
 assert.match(ux, /show="\{\{ over \}\}"/);
 assert.match(ux, /onswipe="onSwipe"/);
 assert.doesNotMatch(ux, /crownrotationchanged/i);
 assert.doesNotMatch(ux, /transform\s*:/);
 
-console.log('PAGE WIRING PASS (movement, turn, reversal, game over, restart, directives)');
+console.log('PAGE WIRING PASS (textures, movement, turn, reversal, game over, restart, directives)');

tests/pieces.cjs

@@ -0,0 +1,68 @@
+// TDD: piece classification for textured rendering.
+// renderPieces(snake, dir) -> array of texture names, one per segment (head first).
+const assert = require('assert/strict')
+const fs = require('fs')
+const vm = require('vm')
+
+const src = fs.readFileSync(__dirname + '/../src/common/snake.js', 'utf8')
+const sandbox = { module: { exports: {} } }
+vm.runInNewContext(src, sandbox)
+const snake = sandbox.module.exports
+
+// compass sides: e/w/n/s (screen coords, y grows downward)
+function pieces(list, dir) { return snake.renderPieces(list, dir) }
+
+// -- initial snake: head east, horizontal body, tail pointing west
+assert.deepEqual(
+  pieces([{ x: 6, y: 7 }, { x: 5, y: 7 }, { x: 4, y: 7 }], { x: 1, y: 0 }),
+  ['head_e', 'body_h', 'tail_w'])
+
+// -- vertical snake moving south
+assert.deepEqual(
+  pieces([{ x: 3, y: 5 }, { x: 3, y: 4 }, { x: 3, y: 4 + 1 }], { x: 0, y: 1 })
+    .map((p, i) => i), // shape check below with explicit list instead
+  [0, 1, 2])
+assert.deepEqual(
+  pieces([{ x: 3, y: 5 }, { x: 3, y: 6 }, { x: 3, y: 7 }], { x: 0, y: 1 }),
+  ['head_s', 'body_v', 'tail_s'])
+
+// -- corner: head turned from east to south
+// snake [(6,8),(6,7),(5,7)]: neck connects south (to head) and west (to rest);
+// tail cell (5,7)'s neighbor is east, so its tip points west
+assert.deepEqual(
+  pieces([{ x: 6, y: 8 }, { x: 6, y: 7 }, { x: 5, y: 7 }], { x: 0, y: 1 }),
+  ['head_s', 'corner_sw', 'tail_w'])
+
+// -- corner: head turned from east to north
+assert.deepEqual(
+  pieces([{ x: 6, y: 6 }, { x: 6, y: 7 }, { x: 5, y: 7 }], { x: 0, y: -1 }),
+  ['head_n', 'corner_nw', 'tail_w'])
+
+// -- corner heading west turning south (es corner mirrored)
+// tail cell (5,7)'s neighbor is west, so its tip points east
+assert.deepEqual(
+  pieces([{ x: 4, y: 8 }, { x: 4, y: 7 }, { x: 5, y: 7 }], { x: -1, y: 0 }),
+  ['head_w', 'corner_es', 'tail_e'])
+
+// -- double corner (S shape): head moving south, west, then north —
+// hand-verified: every middle cell of this tight zigzag is a corner
+// [(6,8) head][ (6,7) sw ][ (5,7) en ][ (5,6) sw ][ (4,6) en ][ (4,5) tail ]
+assert.deepEqual(
+  pieces([{ x: 6, y: 8 }, { x: 6, y: 7 }, { x: 5, y: 7 }, { x: 5, y: 6 }, { x: 4, y: 6 }, { x: 4, y: 5 }], { x: 0, y: 1 }),
+  ['head_s', 'corner_sw', 'corner_en', 'corner_sw', 'corner_en', 'tail_n'])
+
+// -- every returned piece maps to a texture that must exist
+const TEX = ['head_e', 'head_w', 'head_n', 'head_s',
+  'body_h', 'body_v',
+  'corner_en', 'corner_es', 'corner_nw', 'corner_sw',
+  'tail_e', 'tail_w', 'tail_n', 'tail_s']
+const dirTex = __dirname + '/../src/common/tex'
+for (const p of TEX) {
+  assert.ok(fs.existsSync(dirTex + '/' + p + '.png'), 'missing texture ' + p)
+}
+
+// -- food + board textures
+assert.ok(fs.existsSync(dirTex + '/apple.png'), 'missing apple texture')
+assert.ok(fs.existsSync(dirTex + '/board.png'), 'missing board texture')
+
+console.log('PIECE CLASSIFICATION PASS')