Editing Mystery Box (section)

== Mechanics ==
* '''Interact range:''' 16 units.  
* '''Cost:''' Starts at 500 points and increases by +500 for every use (shared across all boxes on the map).  
* '''Open state:''' Box animates open with sound effects, then waits for the player to press [E] again to collect the weapon.  
* '''Recent memory:''' Tracks the last 3 weapons given and avoids immediate duplicates.  
* '''Luck interaction:'''  
  * Reduces the chance of the box relocating instead of giving a weapon.  
  * Increases weighting toward upgrades and avoids “bad” repeats.  
* '''Relocation risk:'''  
  * Base chance: 25% every time the box closes.  
  * Reduced by 2% per Luck point (min risk = 3%).  
  * If relocation triggers: the box slams shut, rejects the player with '''sndBoxReject''', and another box spawns elsewhere.

=== Rewards ===
* Any weapon in the current global pool can appear, excluding Beast-tier versions.  
* Weapon is given fully loaded:  
  * `ammo = mag_cap`  
  * `ammo_stock = mag_cap * mags`