V2 — Unified UI, Screensaver, Big Memory Cut

📦 Build Footprint

Sketch uses 18498 bytes (57%) of program storage space. Maximum is 32256 bytes.
Global variables use 1653 bytes (80%) of dynamic memory, leaving 395 bytes for local variables. Maximum is 2048 bytes.

V1 previously used ~98% of flash. V2 dramatically reduces usage by deduping LCD/buttons and embedding all games under a single UI.

✨ Highlights

• Unified Menu UI: single setup()/loop() in UI.ino; all games launched as runners.
• Eye Animation screensaver: auto-runs after 30s of no input on the menu.
• Chrome Dino: two-cell T-Rex preserved; dual lane (cactus bottom / bird top); score-based difficulty; fixed Game Over.
• Input stability: namespaced buttons (UI_BTN_* in UI, DINO_BTN_* in Dino) to avoid macro clashes.
• Embed-safe games: no duplicate globals; shared LiquidCrystal and read_LCD_buttons() via extern.

🛠 Changes (since V1)

• Merged multiple sketches into a single UI build; removed stub duplicates.
• Added 30s idle detection → runs Eye Animation; returns on any key.
• Dino: SELECT to start/restart; jump on UP/SELECT; clean collision handling.
• Helicopter: Press SELECT to restart at Game Over (stable A0 read via read_LCD_buttons()).
• Standardized exit behavior (hold LEFT to return to menu in embedded runners, where implemented).

🐛 Fixes

• Fixed “double death” Game Over in Dino (no ghost continue).
• Resolved BTN_SELECT macro collisions across sketches by namespacing.
• Eliminated redefinition errors (LiquidCrystal lcd, setup/loop) in multi-file builds.

🔧 Upgrade Guide (V1 → V2)

1. Open the UI build and ensure only one setup()/loop() lives in UI.ino.
2. Use one global LCD: LiquidCrystal lcd(8,9,4,5,6,7) in UI.ino only.
   Games should use extern LiquidCrystal lcd; (already set up in V2 files).
3. Buttons: keep a single read_LCD_buttons() in UI.ino and reuse via extern.
4. Dino embedding: ensure #define EMBED_DINO_IN_UI 1 is present in the UI build so Dino reuses UI resources.
5. Remove duplicates of standalone game files that define their own setup/loop/lcd when compiling the UI project.

📁 Files (V2)

• UI/UI.ino (entry point; menu + screensaver + shared LCD/buttons)
• UI/*.ino (runners for Snake, Bricks, Helicopter, Compass, Days, Eye)
• Chrome_Dino/Chrome_Dino.ino (embed-ready; preserved sprite pixels)
• snake_game/snake_game.ino, Break_the_Bricks/Break_the_Bricks.ino, Helicopter_Game/Helicopter_Game.ino, etc.

⚠️ Notes / Known Limits

• SRAM is tight (~80%): keep locals small; move string literals to flash with F("..."); consider PROGMEM for sprites if you add more.
• A0 thresholds vary by shield: prefer read_LCD_buttons() enum checks over raw analog ranges.
• Keep custom char budget (8) in mind; V2 locks dino sprites in 0–6 and animates the bird in slot 7 only.

✅ Verification

• Boot → menu shows all apps (including Chrome Dino).
• Idle for 30s on menu → Eye Animation appears; any key returns.
• Dino: SELECT starts/restarts; UP/SELECT jumps; collisions end game immediately.
• Helicopter: at Game Over, SELECT restarts reliably.

---

Made with ♥ on an Uno, tiny RAM, and lots of sprites.