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20 lines
995 B
Forth

: next-rpc ( fd -- score-or-false-if-eof )
pad 4 rot read-line throw ( read next line from file )
swap 3 = and if ( if read complete round )
pad 2 + c@ dup 87 - ( score for our hand )
swap pad c@ - ( difference between hands )
dup 23 = if drop 3 + else ( 3pts for tie e.g. 'X' - 'A' )
dup 21 = swap 24 = or if 6 + then ( 6pts for win )
then
else false then ; ( false if end-of-file )
: all-rpcs ( fd -- total-score )
0 begin ( start with zero score )
over next-rpc ( read next hand )
dup if + true then ( add to score if not EOF )
0= until nip ;
s" input" r/o open-file throw all-rpcs . cr ( play all rounds in input )
bye