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91 lines
2.4 KiB
Plaintext
91 lines
2.4 KiB
Plaintext
print " "*32 + "Animal"
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print " "*15 + "Creative Computing Morristown, New Jersey"
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print; print; print
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print "Play 'Guess the Animal'"
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print
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print "Think of an animal and the computer will try to guess it."
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print
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// Ask a yes/no question, and return "Y" or "N".
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getYesNo = function(prompt)
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while true
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inp = input(prompt + "? ").upper
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if inp and (inp[0] == "Y" or inp[0] == "N") then return inp[0]
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print "Please answer Yes or No."
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end while
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end function
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// Our data is stored as a list of little maps.
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// Answers have only an "answer" key.
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// Questions have a "question" key, plus "ifYes" and "ifNo"
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// keys which map to the index of the next question or answer.
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data = [
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{"question":"Does it swim", "ifYes":1, "ifNo":2},
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{"answer":"fish"},
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{"answer":"bird"}]
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// List all known animals.
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listKnown = function
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print; print "Animals I already know are:"
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for item in data
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if item.hasIndex("answer") then print (item.answer + " "*17)[:17], ""
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end for
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print; print
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end function
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// Ask the question at curIndex, and handle the user's response.
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doQuestion = function
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q = data[curIndex]
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if getYesNo(q.question) == "Y" then
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globals.curIndex = q.ifYes
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else
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globals.curIndex = q.ifNo
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end if
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end function
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// Check the answer at curIndex. If incorrect, get a new question
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// to put at that point in our data.
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checkAnswer = function
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node = data[curIndex]
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inp = getYesNo("Is it a " + node.answer)
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if inp == "Y" then
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print "Why not try another animal?"
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else
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actual = input("The animal you were thinking of was a? ").lower
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print "Please type in a question that would distinguish a"
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print actual + " from a " + node.answer
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q = {}
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q.question = input
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q.question = q.question[0].upper + q.question[1:] - "?"
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data[curIndex] = q
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k = data.len
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data.push node // old answer at index k
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data.push {"answer":actual} // new answer at index k+1
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if getYesNo("For a " + actual + " the answer would be") == "Y" then
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data[curIndex].ifYes = k+1
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data[curIndex].ifNo = k
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else
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data[curIndex].ifNo = k+1
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data[curIndex].ifYes = k
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end if
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end if
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end function
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// Main loop. (Press Control-C to break.)
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while true
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while true
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inp = input("Are you thinking of an animal? ").upper
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if inp == "LIST" then listKnown
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if inp and inp[0] == "Y" then break
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end while
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curIndex = 0
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while true
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if data[curIndex].hasIndex("question") then
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doQuestion
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else
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checkAnswer
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break
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end if
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end while
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end while
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