new halloween update

New mode added: Ghost Hunt

• Only ghosts spawn, so maybe watch out with your obstacle placement here.
• 1.5x money multiplier across all sources.
• Endless mode, so go as far as you can!

For nerds only: This is the calculation for ghost hunt

• At the start of every round, the variable count is incremented. It's always equal to the round number.
•  At the least, 1 ghost will be spawned for every count number. So if we are on round 5, 5 ghosts will be spawned, but it can't be that easy.
• Another variable ghostCount is declared starting at 0. For every ghost spawned, it will increment this number by 1. This number does not reset between rounds or anything.
• There are a few more conditions that spawn more ghosts, like:
  • Every 4 ghosts, 1 more will be spawned. This does not affect ghostCount.
  • The same thing as the previous but at 10.
  • Similarly, spawn 2 ghosts every 24 ghosts.
  • Every 50 ghosts, spawn 1 ghost boss with 5000 health. Each time this happens, the requirement to spawn another ghost boss goes down by 2. So after the first trigger, only 48 are required to spawn another boss. The minimum number to spawn is 2.
• This system ensures that the longer you go, it gets exponentially harder, although there may be a point where you can spawncamp every wave. If you get there, you win ig.