Python scripting mod for Besiege allows you to control machines with Python scripts. It runs on IronPython engine. This enables you to create controllers, stabilizators, autopilots, bots and more.

You will need Spaar's ModLoader to use this mod. To install, place LenchScripterMod.dll in Besiege_Data/Mods folder. All mod assets will be downloaded automatically when needed.

By default the mod loads and runs script file from Besiege_Data/Scripts with the same name as your saved machine on simulation start. To change this, open the script options window (Ctrl+U). You can also embed code directly into bsg files to be shared on workshop.

If you defined a function named Update or FixedUpdate, it will be called on every frame or at a fixed rate.

# get block reference
wheel = Besiege.GetBlock("WHEEL 1")
direction = 1

# set wheel toggle mode
wheel.SetToggleMode("AUTOMATIC", True)

def Update(): # called on every frame
  # direction variable is defined globally
  global direction

  # if U is held down, speed is 1
  if Input.GetKey(KeyCode.U):
    speed = 1
  else:
    speed = 0
    
  # invert direction if I is pressed
  if Input.GetKeyDown(KeyCode.I):
    direction *= -1
  # set wheel speed slider
  wheel.SetSliderValue("SPEED", speed * direction)

For more information, see the wiki pages.