while True:
enemy = hero.findNearestEnemy()
# With AND, the type is only checked if enemy exists.
if enemy.type == "munchkin":
hero.attack(enemy)
# Find the nearest item.
item = hero.findNearestItem()
# Collect item if it exists and its type is "coin".
if item.type == "coin":
hero.moveXY(item.pos.x, item.pos.y)