Atari 8-bit Source code

0 REM S."D:​MAZE.TBS":​RUN
10 GRAPHICS 17:​SC=DPEEK(88):​FOR X=21 TO 37:​POKE SC+X,​3:​NEXT X:​FOR Y=2 TO 17:​MOVE SC+20,​SC+Y*20,​20:​NEXT Y:​ZZ=SC+42:​Z=ZZ:​OPEN #1,​4,​0,​"K:​"
20 _=-1:​T=20:​DIM D(4):​D(0)=_:​D(1)=-T:​D(2)=1:​D(3)=T:​RR=_:​? #6;"MAZE!  yn":​REPEAT:​GET #1,​N:​UNTIL N=78 OR N=89:​POKE 708,​0
25 POKE Z,​0:​G=1000:​IF N=89:​GG=128:​ENDIF:​POKE 559,​0:​CH=(PEEK(106)-16)*256:​POKE 756,​CH/256
30 REPEAT:​A=0:​OD=-1:​FOR I=0 TO 3:​A=A+(PEEK(Z+D(I)*2)=3):​NEXT I:​IF A=0 THEN RR=PEEK(Z)-128:​POKE Z,​0:​POKE Z-D(RR),​0:​Z=Z-D(RR)*2
35 UNTIL A<>0+(Z=ZZ):​IF Z<>ZZ OR RR=-1 THEN REPEAT:​R=RAND(4):​UNTIL PEEK(Z+D(R)*2)=3 AND R<>OD:​FOR I=0 TO 1:​Z=Z+D(R):​POKE Z,​128+R:​NEXT I:​GOTO 30
40 Z=SC+210:​MOVE ADR("UUUU"),​CH,​8:​MOVE ADR(""),​CH+24,​8:​POKE 710,​8:​POKE 559,​34:​TIME$= "000000"
50 FOR Y=_ TO 1:​FOR X=_ TO 1:​NZ=Z+Y*T+X:​POKE NZ,​PEEK(NZ)!64:​NEXT X:​NZ=Z-2+Y*T:​GOSUB G:​NZ=NZ+4:​GOSUB G:​NEXT Y:​FOR X=-2 TO 2:​NZ=Z-40+X:​GOSUB G
60 NZ=NZ+80:​GOSUB G:​NEXT X:​REPEAT:​S=STICK(0):​UNTIL S<15:​NZ=Z+D((S=14)+(S=7)*2+(S=13)*3):​IF PEEK(NZ)&63=0:​Z=NZ:​ENDIF:​GOTO 50+1000*(Z=ZZ)
1000 POKE NZ,​(PEEK(NZ)&191)!GG:​RETURN
1050 FOR A=0 TO 15:​FOR B=0 TO 15:​SOUND 0,​100+A*10,​10,​B:​POKE 708,​A*16+B:​POKE 712,​15-B:​NEXT B:​NEXT A:​GRAPHICS 18:​? #6;TIME$:​PAUSE 120:​RUN	

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