Fixed Powerup Generation

• Reworked logic so that if the player does not have a shield, they only get shield powerups.

Added shield levels

• Shield now comes in 4 levels (0-3)
• level 3 means the player can collide with a rock three times before your shield is destroyed.

Added in stage user interface.

Displays critical stats, such as:

• Shield Level
• Credits (money for the upgrade shop)
• Score (this round)
• Total (score all game) (not working yet)

Updated Shield Sprite

• Changed from GIF to PNG sequence.
  • This allowed for better use of transparency effects.

Known Bugs

• Game sometimes crashes when transitioning to the upgrade shop.
• Sound gets choppy right around score 7000 (no idea why just yet).
• Total not showing on in stage user interface.
• Did I miss any?  Please let me know.

 AS ALWAYS your feedback is appreciated!

1. Was the game fun?  
2. How can the game improve?
3. Currently if the player does not have a shield, they ONLY get shield powerups.
   1. Should this be changed?
   2. If so, how?