I get this error here is the error and the code
Ogres are advancing through the forest lanes!
# Spawn some soldiers and have them defend their lanes!
def defendLane(event):
# Remember to create a variable for the target, to remember:
unit = event.target
# Save the unit's starting pos.x
startX = unit.pos.x
while True:
enemy = unit.findNearestEnemy()
# If there is an enemy.
if enemy:
# Use unit.attack to attack the enemy:
unit.attack(enemy)
pass
else:
# Move the unit back to it's starting x and y.
unit.moveXY(startX, 16)
game.spawnXY("soldier", 9, 16)
game.spawnXY("soldier", 30, 16)
game.spawnXY("soldier", 54, 16)
game.spawnXY("soldier", 75, 16)
# Set the event handler defendLane on "spawn" event for "soldier"s.
defendLane("spawn", "soldier")