Catch The Mouse by RAX

10 Line BASIC Challenge    

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Category : PUR-80 

TITLE    : Catch The Mouse

PLATFORM : Oric Atmos

AUTHOR   : RAX

LANGUAGE : BASIC 1.1b

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Story:

You are a professor in a laboratory.

There were earthquakes and all the mice escaped into the maze.

Your goal is to catch them. Be careful that there is electricity on the walls of the maze.

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CODE:
0FORA=0TO15:READV:POKE#B508+A,V:NEXT:DEFFNR(X)=RND(1)*63AND28:E=0:POKE#26A,10'
1LORES0:C=35:D%=0:FORY=1TO23:X=0:PLOTX,Y,C:X=38:PLOTX,Y,C:NEXT:FORX=1TO37:Y=0'
2PLOTX,Y,C:Y=24:PLOTX,Y,C:NEXT:FORY=2TO22STEP2:FORX=2TO36STEP2:R=INT(RND(1)*4)
3A=0:B=0:IFR=0THENA=-1ELSEIFR=1THENB=-1ELSEIFR=2THENA=1ELSEB=1:PLOTX,Y,C':::::
4PLOTX+A,Y+B,C:NEXTX,Y:X=1:Y=1:L=RND(1)*22+2:J=RND(1)*33+2:E=E+1:?@0,25;"L:"E'
5:REPEAT:K$=KEY$:IFK$THENK=ASC(K$):X0=X:Y0=Y:Y=Y+(K=11)-(K=10):X=X+(K=8)-(K=9)
6Q=0:W=0:IFD%=1THENQ=-1ELSEIFD%=2THENQ=1ELSEIFD%=3THENW=1ELSEW=-1:DATA12,,30':
7IFSCRN(J+Q,L+W)<34THENPLOTJ,L,16:J=J+Q:L=L+W:PLOTJ,L,34ELSED%=RND(1)*5'::::::
8POKE#B51A,FNR(0):POKE#B51C,FNR(0):DATA45,,12,18,51,,6,17,47,63,18,,':::::::::
9O=SCRN(X,Y):PLOTX0,Y0,16:PLOTX,Y,33:UNTILO>33:SHOOT:IFO=34THEN1ELSEZAP:CLS'::
RUN 

0FORA=0TO15:READV:POKE#B508+A,V:NEXT:DEFFNR(X)=RND(1)*63AND28:E=0:POKE#26A,10

    FORA=0TO15:READV:POKE#B508+A,V:NEXT: - change chars (sprites)

    DEFFNR(X)=RND(1)*63AND28 - defining a function that returns a random value for the wall sprite 

    E=0 - level

    POKE#26A,10             - hide command prompt and disable keyboard sound

===========

1LORES0:C=35:D%=0:FORY=1TO23:X=0:PLOTX,Y,C:X=38:PLOTX,Y,C:NEXT:FORX=1TO37:Y=0'

    LORES0

    C=35                    - wall char (sprite)

    D%=0                    - mouse direction

    FORY=1TO23              - print vartical border

        X=0

        PLOTX,Y,C

        X=38

        PLOTX,Y,C

    NEXT

    FORX=1TO37              - print horisontal border

        Y=0

===========

2PLOTX,Y,C:Y=24:PLOTX,Y,C:NEXT:FORY=2TO22STEP2:FORX=2TO36STEP2:R=INT(RND(1)*4)

        PLOTX,Y,C           - print horisontal border

        Y=24

        PLOTX,Y,C

        NEXT

    FORY=2TO22STEP2         - print labirynth; vertical iteration

        FORX=2TO36STEP2     - horizontal iteration

            R=INT(RND(1)*4) - get random orientation

===========

3A=0:B=0:IFR=0THENA=-1ELSEIFR=1THENB=-1ELSEIFR=2THENA=1ELSEB=1:PLOTX,Y,C'

            A=0             - random wall position X

            B=0             - random wall position Y

            IF R=0 THEN     - if R = 0 then direction "left"

                A=-1

            ELSE

                IF R=1 THEN - if R = 1 then direction "up"

                    B=-1

                ELSE IF R=2 THEN if R = 2 then direction "right"

                A=1

                ELSE        - direction "down"

                B=1

            PLOTX,Y,C       - print 1st wall

===========

4PLOTX+A,Y+B,C:NEXTX,Y:X=1:Y=1:L=RND(1)*22+2:J=RND(1)*33+2:E=E+1:?@0,25;"L:"E

            PLOTX+A,Y+B,C   - print 2nd wall

    NEXTX,Y                 - NEXT

    X=1                     - player x pos

    Y=1                     - player y pos

    L=RND(1)*22+2           - mouse y pos

    J=RND(1)*33+2           - mouse y pos

    E=E+1                   - level

    ?@0,25;"L:"E            - print level

===========

5REPEAT:K$=KEY$:IFK$THENK=ASC(K$):X0=X:Y0=Y:Y=Y+(K=11)-(K=10):X=X+(K=8)-(K=9)

    REPEAT                  - start iteration

    K$=KEY$                 - get key

    IF K$ THEN              - if key pressed

        K=ASC(K$)           - get ascii code of key

        X0=X                - get olx X pos

        Y0=Y                - get olx Y pos

        Y=Y+(K=11)-(K=10)   - new Y pos if pressed "up" or "down" key

        X=X+(K=8)-(K=9)     - new X pos if pressed "left" or "right" key

===========

6Q=0:W=0:IFD%=1THENQ=-1ELSEIFD%=2THENQ=1ELSEIFD%=3THENW=1ELSEW=-1:DATA12,,30

    Q=0                     - X offset

    W=0                     - Y offset

    IFD%=1THEN              - direction left

        Q=-1                - x offset =-1

    ELSE

        IF D%=2 THEN        - direction right

            Q=1             - x offset = 1

        ELSE

            IFD%=3 THEN     - direction down

                W=1         - y offset = 1

            ELSE            - direction up

            W=-1            - y offset = -1

    DATA12,,30              - character definition data 

===========

7IFSCRN(J+Q,L+W)<34THENPLOTJ,L,16:J=J+Q:L=L+W:PLOTJ,L,34ELSED%=RND(1)*5

    IF SCRN(J+Q,L+W)<34 THEN - if new mouse pos is free

        PLOTJ,L,16          - delete old mouse

        J=J+Q               - calc new mouse X pos

        L=L+W               - calc new mouse Y pos

        PLOTJ,L,34          - print mounse in new pos

    ELSE

        D%=RND(1)*5         - get new random direction for mause

===========

8POKE#B51A,FNR(0):POKE#B51C,FNR(0):DATA45,,12,18,51,,6,17,47,63,18,,

    POKE#B51A,FNR(0)        - define new wandom wall line of sprite 

    POKE#B51C,FNR(0)        - define new wandom wall line of sprite 

    DATA45,,12,18,51,,6,17,47,63,18,, - character definition data 

===========

9O=SCRN(X,Y):PLOTX0,Y0,16:PLOTX,Y,33:UNTILO>33:SHOOT:IFO=34THEN1ELSEZAP:CLS

    O=SCRN(X,Y)             -scan new player pos on the screen in pos X,Y

    PLOTX0,Y0,16            - delete player feom old pos

    PLOTX,Y,33              - print player in new pos

    UNTILO>33               - until player hits something 

    SHOOT                   - shot from a rifle sfx

    IF O=34 THEN 1          - if plaget catch the mouse then goto 1

    ELSE                    

        ZAP                 - laser sfx

        CLS                 - clear screen