the major changes made to the game since the first version:

1. Gun System:

• Added gun with animation frames (gunani_0 through gunani_11)

• Shooting mechanics with beam effect

• Bullet count and pickup system

• Maximum of 3 bullets

• Bullet pickups that spawn periodically

• Visual beam effect when shooting

• 'X' key to shoot

   2. Giant Enemies:

• Added larger enemies that use giant_run_0 through giant_run_3 frames

• Larger hitbox (60 pixels vs 30 for regular enemies)

• Deal 2 damage instead of 1

• Spawn every 9-16 seconds

• Scaled to 75% size
  

   3. Game State Management:

• Added proper game state handling (menu, playing, high scores)

• Added start_game() and stop_game() functions

• Better enemy spawn management

• Proper cleanup when switching states
• UI Improvements:
  

    4. Added bullet counter display

• Added crosshair cursor
• Added boss health bar
• Menu buttons and screens

   5. Gameplay Balance:

• Starting with 1 bullet instead of 0
• Adjusted spawn timings for different enemies
• Added progressive difficulty with speed_factor