forked from KolibriOS/kolibrios
75 lines
1.9 KiB
QBasic
75 lines
1.9 KiB
QBasic
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REM
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REM --- Tiny BASIC Interpreter and Compiler Project
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REM --- Mugwump Demonstration Game
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REM
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REM --- Released as Public Domain by Damian Gareth Walker 2019
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REM --- Created: 13-Aug-2019
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REM
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REM --- Variables
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REM C: axis diff between player guess and mugwump position
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REM D: distance between player guess and mugwump position
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REM G: mugwump column
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REM H: mugwump row
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REM M: moves taken
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REM R: random number generator seed
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REM X: player guess column
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REM Y: player guess row
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REM --- Initialise the random number generator
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PRINT "Think of a number."
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INPUT R
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IF R<0 THEN LET R=0
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IF R>4095 THEN LET R=4095
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REM --- Initialise the game
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GOSUB 200
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LET G=R-(R/10*10)
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GOSUB 200
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LET H=R-(R/10*10)
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LET M=0
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REM --- Input player guess
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10 PRINT "Where is the mugwump? Enter column then row."
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INPUT X,Y
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IF X>=0 THEN IF X<=9 THEN IF Y>=0 THEN IF Y<=9 THEN GOTO 20
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PRINT "That location is off the grid!"
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GOTO 10
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REM --- Process player guess
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20 LET M=M+1
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PRINT "The mugwump is..."
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LET D=0
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LET C=G-X
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GOSUB 60
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LET C=H-Y
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GOSUB 60
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IF D=0 THEN GOTO 40
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PRINT "...",D," cells away."
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IF M>10 THEN GOTO 50
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PRINT "You have taken ",M," turns so far."
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GOTO 10
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REM --- Player has won
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40 PRINT "...RIGHT HERE!"
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PRINT "You took ",M," turns to find it."
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END
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REM --- Player has lost
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50 PRINT "You have taken too long over this. You lose!"
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END
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REM --- Helper subroutine to calculate distance from player to mugwump
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REM Inputs: C - difference in rows or columns
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REM D - running total distance
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REM Output: D - running total distance, updated
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60 IF C<0 THEN LET C=-C
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LET D=D+C
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RETURN
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REM --- Random number generator
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REM Input: R - current seed
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REM Outputs: R - updated seed
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200 LET R=5*R+35
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LET R=R-R/4096*4096
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RETURN
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