Coin Quest: Game Over

🪙 The last piece. Right now, crashing just freezes everything — no message, no second chance.

Remember the very first Coin Quest exercise, back in the Variables chapter? You made three variables: player, score, and is_playing. You've been carrying score and is_playing ever since. Here's where is_playing finally earns its keep.

1. Write hud(state). It returns the line of text shown under the game.

• Still playing → Coins: 3
• Game over → GAME OVER - Coins: 3 - press R

Remember str() — you can't join a number onto text without it.

2. Add restart. Make the very first line of update:

if keys["r"]:
    return new_game()

Returning a brand-new state wipes everything — position, rocks, coins, score — in one line. That's why new_game() was worth writing as a function.

Crash on purpose. Read the message. Press R. Go again.

🎉 That's Coin Quest — a real game, built from print statements up.