103 lines
3.2 KiB
Factor
103 lines
3.2 KiB
Factor
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! cont-number-guess
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!
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! Copyright (C) 2004 Chris Double.
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions are met:
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!
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! 1. Redistributions of source code must retain the above copyright notice,
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! this list of conditions and the following disclaimer.
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!
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! 2. Redistributions in binary form must reproduce the above copyright notice,
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! this list of conditions and the following disclaimer in the documentation
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! and/or other materials provided with the distribution.
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!
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! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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!
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! This example modifies the console based 'numbers-game' example
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! in a very minimal way to demonstrate conversion of a console
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! program to a web based application.
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!
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! All that was required was changing the input and output functions
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! to use HTML. The remaining code was untouched.
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!
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! The result is not that pretty but it shows the basic idea.
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IN: numbers-game
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USE: combinators
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USE: kernel
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USE: math
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USE: random
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USE: parser
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USE: html
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USE: cont-responder
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USE: cont-utils
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USE: stack
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USE: stdio
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USE: namespaces
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: web-print ( str -- )
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#! Display the string in a web page.
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[
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swap dup
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<html>
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<head> <title> write </title> </head>
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<body>
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<p> write </p>
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<p> <a href= a> "Press to continue" write </a> </p>
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</body>
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</html>
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] show 2drop ;
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: read-number ( -- )
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[
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<html>
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<head> <title> "Enter a number" write </title> </head>
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<body>
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<form action= method= "post" form>
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<p>
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"Enter a number:" write
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<input type= "text" name= "num" size= "20" input/>
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<input type= "submit" value= "Press to continue" input/>
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</p>
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</form>
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</body>
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</html>
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] show [ "num" get ] bind parse-number ;
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: guess-banner
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"I'm thinking of a number between 0 and 100." web-print ;
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: guess-prompt "Enter your guess: " web-print ;
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: too-high "Too high" web-print ;
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: too-low "Too low" web-print ;
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: correct "Correct - you win!" web-print ;
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: inexact-guess ( actual guess -- )
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< [ too-high ] [ too-low ] ifte ;
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: judge-guess ( actual guess -- ? )
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2dup = [
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2drop correct f
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] [
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inexact-guess t
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] ifte ;
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: number-to-guess ( -- n ) 0 100 random-int ;
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: numbers-game-loop ( actual -- )
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dup guess-prompt read-number judge-guess [
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numbers-game-loop
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] [
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drop
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] ifte ;
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: numbers-game number-to-guess numbers-game-loop ;
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"numbers-game" [ numbers-game ] install-cont-responder
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