首先,我知道这是一堆凌乱,无组织的Lua,但我还在学习,所以请原谅我。
我的问题是: 我在我的iPad上的TouchLua +上运行我的代码,它运行良好而顺利,直到我进入tinput = io.read(),无论我输入'攻击'还是'逃跑'我最终得到的“不是有效的命令“无限地印在屏幕上。
我认为这是在while语句中的get_input()与我将io.read()定义为siput而不是通过整个脚本的标准输入之间的冲突。
我可以接受这个,除了我正在学习的脚本(目前的youtube视频)没有这样做的事实,我已经比较了这两个和功能,而且,'if siput'和他们写得完全一样。
我试图在google上找到答案,视频上的评论和原始脚本存储的github,但我还不了解github,谷歌也没有帮助。
我做错了什么,或错过了什么,或者总是搞砸了......
另外,请原谅我的大量使用评论,抱歉。
print("Welcome to the game")
-- expilictly set the variable to an empty string
-- because it is used in a 'while' loop
input = ""
inv = {"sword", "coin", "armour"}
-- inventory function
function get_inv()
for i, v in pairs(inv) do
print(i .. " " .. v)
end
end
-- invalid command function
function inv_com()
print("You did not type a valid command...")
end
-- function to simplify 'while' statement throughout
-- entire programme
function get_input()
print("What do you want to do?")
i = io.read() -- get what the user types
return i
end
-- fuction adding item to inventory
function push_inv(item)
table.insert(inv, item)
end
-- function removing item from inventory
function pop_inv(item)
for i, v in pairs(inv) do
if v == item then
table.remove(inv, i)
end
end
end
-- '~=' means not equal to
while input ~= "leave cave" do
input = get_input() -- get what the user types
-- '==' means equal to
if input == "inspect" then
print("You are in a cave")
elseif input == "leave cave" then
print("You leave cave")
elseif input == "inv" then
get_inv()
else
inv_com()
end
end
input = ""
while input ~= "follow path" do
input = get_input()
if input == "inspect" then
print("You are at the base of a hill. There is a path")
elseif input == "follow path" then
print("You follow the path")
print("A troll appears wielding an axe")
print("What do you want to do")
tinput = io.read()
if tinput == "attack" then
print("You smack it, and it falls dead")
elseif tinput == "run away" then
print("You cowardly run away and it smack you, and steals your coin")
pop_inv("coin")
else
print("You stand there, it stabs you, you die")
os.exit()
end
elseif input == "inv" then
get_inv()
else
inv_com()
end
end
input = ""
-- a boolean value can only have 1 of 2 values
-- 'true' or 'false', this works great for the have_key
-- value because there are only 2 possibilities:
-- you either have the key or you don't.
have_key = false
-- this stement mean: while this statement:
-- 'input == "open gate"
-- and have_key' is true
while not (have_key == true and input == "open gate") do
input = get_input
if input == "inspect" then
--- if we dont have the key, tell us
if have_key == false then
print("there is a path behind you, a gate infront of you and key is hidden in the grass")
-- if we have the key, dont tell us
elseif have_key == true then
print("There is a path behind you, and a gate infront of you")
else
print("you did not put a valid command")
end
-- we now have the key, set variable to true
elseif input == "grab key" then
have_key = true
print("You grabbed the key")
table.insert(inv, "gate key")
elseif input == "inv" then
get_inv()
elseif input == "open gate" then
if have_key == true then
print("You've escaped")
elseif have_key == false then
print("The gate is locked")
end
elseif input == "pick up magic" then
push_inv("MAGIC")
elseif input == "inv" then
get_inv()
else
inv_com()
end
end
print("You won the game. Please leave!")
答案 0 :(得分:2)
你的一个while循环有代码
input = get_input
这应该是
input = get_input()
发生的事情是您将变量输入设置为等于函数 get_input,而不是调用它的结果,因此输入永远不会是有效的字符串,它将始终调用inv_com。
编辑:我知道这不在问题范围之内,但除了特定问题之外,我还有一些针对您的计划的提示。你做的事情让我想起了很多我如何开始编程,制作文字冒险的方法。如果您对文字冒险感兴趣,请查看Zork,看看他们的游戏循环是如何运作的。另外,对状态机进行一些研究,因为它似乎对你现在正在建设的东西有用。快乐的编码:)