map

• simplex noise trees
• decrease in circle around origin
• origin has portal

gameplay

• place turrets
• in the top right:
  • next enemy wave (ETA, short description)
  • next vendor (ETA, short description)
• clear trees from map (axe tied up until tree cleared)
• vendors sell screws and other items

turret varieties

• portal (takes damage, game over if 0)
  configurable: position
  costs: N/A

• pole/wall (reroutes enemies)
  configurable: position, connection to other nearby poles
  costs: mid wood, low screws

• piston (periodically stabs in a set direction)
  configurable: position, angle
  costs: high wood, low screws

• swinger (moves between angles)
  configurable: position, start angle, end angle
  costs: high wood, mid screws

• blaster (periodically shoots in a set direction)
  configurable: position, angle
  costs: high wood, high screws

• turret (aims itself and shoots)
  configurable: position
  costs: high wood, high screws, targeting computer

enemies

killer robots
spawn at trees on outskirts of camp
pathfind to portal, breaking walls only if necessary
vary in speed and durability
killing an enemy yields vendor currency

formations:

• scout (one quick low hp unit, pause, long train of slow mid hp units)
• trickle (space between them sine wave)
• fibonnaci (group of 1, then group of 1, then group of 2 ... durability inversely proportional to size of group?)

items

• wood (acquired via axe + tree + time, used to make turrets)
• screws (sold by vendors, used to make turrets)
• targeting computer (sold by vendors, used to make most advanced turret)

all sold by vendors

• axe (allows player to remove more trees simultaneously)
• flare (moves up timers: vendor arrives immediately, next wave happens subsequently)
• airstrike (immediately removes enemies and trees in a player-selected area)
• big book of bargains (all vendors now sell bulk packages)

vendors

screwball

rumored to be an axe murderer

• x5 screw (5gp) (stock: 3 to 5)
• x1 axe (50gp) (stock: 1)
• x1 flare (75gp) (stock: 1) (10% chance)
• x1 airstrike (50gp) (stock: 1) ( 5% chance)
• IF YOU DON'T GOT THE BBoB:
  • n/a
• ELSE, CUZ YA DO:
  • x50 screw (25gp) (stock: 2)

the survivalist

he's eaten some things he probably shouldn't have

• x1 axe (40gp)
• EITHER OR:
• x1 flare (50gp) (stock: 1)
• x1 airstrike (60gp) (stock: 1)
• x1 targeting computer (40gp) (stock: 1 to 2) (10%)
• IF YOU DON'T ALREADY GOT IT:
  • x1 big book of bargains (100gp) (stock: 1) ( 5%)
• ELSE, CUZ YA DO:
  • x3 axe (100 gp) (stock: 1)
  • x1 targeting computer (40gp) (stock: 1)

the tinkerer

he's sorry about the all the killer robots

• x20 screw (14gp) (stock: 3 to 5)
• x1 airstrike (50gp) (stock: 1) (50% chance)
• x1 targeting computer (40gp) (stock: 1)
• IF YOU DON'T ALREADY GOT IT:
  • x1 big book of bargains (100gp) (stock: 1 to 2) ( 6%)
• ELSE, CUZ YA DO:
  • x100 screw (40gp) (stock: 2)
  • x3 airstrike (100 gp) (stock: 1)

vendor sequence

first screwball, then survivalist, then 50% either for 2 rounds, then even split any of the 3