Merge pull request #718 from jnellis/main

Bagels in Lua.

05_Bagels/lua/Bagels.lua

@@ -0,0 +1,121 @@
+---
+--- Bagels
+--- Ported by Joe Nellis.
+--- Text displayed is altered slightly from the original program to allow for
+--- more (or less) than three digits to be guessed. Change the difficulty to
+--- the number of digits you wish in the secret code.
+---
+
+--- difficult is number of digits to use
+local difficulty = 3
+
+print [[
+                                BAGELS
+              CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY
+
+]]
+
+function getInput(prompt)
+    io.write(prompt)
+    io.flush()
+    local input = io.read("l") 
+    if not input then  --- test for EOF
+        print("GOODBYE")
+        os.exit(0)
+    end
+    return input
+end
+
+local needsRules = getInput("WOULD YOU LIKE THE RULES? (YES OR NO) ")
+print()
+if needsRules:match("[yY].*") then
+    print(string.format( [[
+I AM THINKING OF A %u DIGIT NUMBER.  TRY TO GUESS
+MY NUMBER AND I WILL GIVE YOU CLUES AS FOLLOWS:
+   PICO   - ONE DIGIT CORRECT BUT IN THE WRONG POSITION
+   FERMI  - ONE DIGIT CORRECT AND IN THE RIGHT POSITION
+   BAGELS - NO DIGITS
+   ]], difficulty))
+end
+
+function play(numDigits, score)
+    local digits = { "1", "2", "3", "4", "5", "6", "7", "8", "9", "0" }
+    --- secret number must not have duplicate digits
+    --- randomly swap numDigits at the head of this list to create secret number
+    for i = 1, numDigits do
+        local j = math.random(1, 10)
+        digits[i], digits[j] = digits[j], digits[i]
+    end
+
+    print "O.K.  I HAVE A NUMBER IN MIND."
+    for guessNum = 1, 20 do
+        :: GUESS_AGAIN :: ---<!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+        local guess = getInput(string.format("GUESS #%u\t?",guessNum))
+        if #guess ~= numDigits then
+            print("TRY GUESSING A", numDigits, "DIGIT NUMBER.")
+            goto GUESS_AGAIN
+        elseif not guess:match("^(%d+)$") then
+            print("WHAT?")
+            goto GUESS_AGAIN
+        else
+            --- check if user has duplicate digits
+            for i = 1, numDigits - 1 do
+                for j = i + 1, numDigits do
+                    if (guess:sub(i, i) == guess:sub(j, j)) then
+                        print("OH, I FORGOT TO TELL YOU THAT THE NUMBER I HAVE")
+                        print("IN MIND HAS NO TWO DIGITS THE SAME.")
+                        goto GUESS_AGAIN
+                    end
+                end
+            end
+        end
+
+        local report = ""
+        --- check for picos, right digit, wrong place
+        for i = 1, numDigits do
+            for j = i + 1, numDigits - 1 + i do
+                if (guess:sub(i, i) == digits[(j - 1) % numDigits + 1]) then
+                    report = report .. "PICO "
+                end
+            end
+        end
+        --- check for fermis, right digit, right place
+        for i = 1, numDigits do
+            if (guess:sub(i, i) == digits[i]) then
+                report = report .. "FERMI "
+            end
+        end
+
+        if (report == string.rep("FERMI ", numDigits)) then
+            print "YOU GOT IT!!!"
+            print ""
+            score = score + 1
+            goto PLAY_AGAIN
+        end
+        if (report == "") then
+            print("BAGELS")
+        else
+            print(report)
+        end
+    end
+    print "OH WELL."
+    print("THAT'S TWENTY GUESSES. MY NUMBER WAS "
+            .. table.concat(digits, "", 1, numDigits))
+
+    :: PLAY_AGAIN :: ---<!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+    local playAgain = getInput("PLAY AGAIN (YES OR NO)?")
+    print()
+    if (playAgain:match("[yY].*")) then
+        return play(numDigits, score)
+    else
+        if (score > 0) then
+            print("A", score, "POINT BAGELS BUFF!!")
+        end
+        print "HOPE YOU HAD FUN. BYE."
+    end
+end
+
+play(difficulty, 0) --- default is numDigits=3, score=0
+