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20 lines
972 B
Forth
20 lines
972 B
Forth
create outcomes 3 , 4 , 8 , 1 , 5 , 9 , 2 , 6 , 7 , ( AX-Z, BX-Z, CX-Z )
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: next-rpc ( fd -- outcome )
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pad 4 rot read-line throw ( read next line from file )
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swap 3 = and if ( if read complete round )
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pad c@ 65 - 3 * ( calculate ABC outcomes index )
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pad 2 + c@ 88 - + ( add XYZ offset )
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cells outcomes + @ ( lookup score for the round )
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else false then ; ( false if end-of-file )
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: all-rpcs ( fd -- total-score )
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0 begin ( start with zero score )
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over next-rpc ( read next hand )
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dup if + true then ( add to score if not EOF )
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0= until nip ;
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s" input" r/o open-file throw all-rpcs . cr ( play all rounds in input )
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bye
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