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我對Ruby相當陌生,而且我正在構建一個基本上作爲交互式果園的程序,用戶將在其中輸入想要種植的樹的類型,然後給水,修剪,挑選和收穫樹。如何跟蹤Ruby中類之外的實例變量的更改?
我遇到的問題是當我試圖讓程序要求命令,直到樹死在某個高度發生。高度是在一個類內部的一個實例變量中定義的,我似乎無法弄清楚如何讓程序跟蹤該類以外的變量,以便它一直提示一個命令,直到達到某個值。
下面的代碼是代碼的開始和結束,但不是中間部分似乎工作正常。底部的每個命令都會工作一次,但程序結束。 任何幫助,將不勝感激。
class Orangetree
def initialize name
@name = name
@height = 0
@branches = 0
@winter = false
@orangesontree = 0
@orangesinbasket = 0
@timeOfyear = 0
puts @name + 'Just Sprouted! What would you like to do with him?'
end
puts 'Welcome to the Orchard! What would you like to grow today?'
reply = gets.chomp
while reply != 'oranges'
puts 'I am sorry, we do not have that kind of tree, try again'
gets.chomp
end
oranges = Orangetree.new 'Woody '
while Orangetree |@height| <= 61
command = gets.chomp
if command == 'water'
puts oranges.rain
end
if command == 'pick'
puts oranges.pick
end
if command == 'prune'
puts oranges.prune
end
if command == 'harvest'
puts oranges.harvest
end
end