#Written by Oleksiy Al-saadi
import random
import time
import os

hp = 100
bag = []

os.system("clear")

def Field(hp, bag):
	while 1 == 1:
		command = input("Type 'Door' or 'Tree': ")
		if (command == "Tree"):
			bag.append("Key")
			print("You found a key in the trunk of the tree! But you scratch your arm, -10 HP")
			hp = hp - 10
		elif (command == "Door"):
			if ("Key" in bag):
				print("You open the door with the key.")
				bag.remove("Key")
				break
			else:
				print("You don't have a key.")
		else:
			print("Not a valid command.")				

	print("You leave the field.")		
	return hp, bag

print("You wake up in a field in Omaha (uh oh). You see a shack with a door, and a tree.")
hp, bag = Field(hp, bag)
print("Current HP is " + str(hp))