🛡️ Feature Request: Add Power-Up – “Shield” (Immunity to Self-Collision for 2 Seconds)

[AjaysDevWorkspace]

Introduce a new power-up called “Shield” that makes the snake immune to self-collision for 2 seconds after being picked up.
This will allow players to survive if they accidentally run into their own tail — but only for a short time.

🎯 Requirements:

• Add a new shield item (e.g., a glowing orb or different-colored fruit).
• When the player collects this item:
  • Enable a shield mode for 2 seconds.
  • During shield mode, ignore self-collision checks.
  • After 2 seconds, return collision behavior to normal.
• Prevent shield stacking if a second one is collected while the first is still active.
• Optional: Add a visual indicator (e.g., glowing snake, border around the screen, shield icon on screen).

💡 Implementation Hints:

• Add a flag like isShieldActive to control self-collision logic.
• Use setTimeout to automatically disable the shield after 2000ms.
• Modify the part of the code that checks for self-collision to something like:
  if (!isShieldActive && checkSelfCollision()) {
  gameOver();
}
• Consider adding sound or visual feedback when the shield activates or deactivates.

🧩 Files Likely Involved:

• script.js (main game loop, collision detection)
• Any file that handles power-up spawning or game state

✅ Acceptance Criteria:

• Player collects the Shield item successfully
• Self-collision is ignored for exactly 2 seconds
• Collision works normally again after 2 seconds
• No shield stacking bugs or unexpected behaviors
• UI feedback shows shield status clearly (optional)

🧪 Optional Bonus:

• Show a countdown timer or visual effect while the shield is active.
• Add a cool-down before another shield can be used.