home *** CD-ROM | disk | FTP | other *** search
- 1 rem ================================
- 2 rem commodares problem #48-2
- 3 rem random walk
- 4 rem solution by
- 5 rem paul sobolik
- 6 rem ====== c-64 only ==============
- 10 c0=49152
- 20 for x=0 to 4*8
- 30 : read a
- 40 : poke c0+x,a
- 50 next
- 60 for x=0 to 8:poke c0+32*8+x,0:next
- 70 v1=peek(56576):v2=peek(53272):os=peek(648)
- 80 poke 53272,16:poke 56576,v1 and 252:poke 648,(c0+1024)/256
- 90 print"[147]";
- 100 data 24,60,126,255,24,24,24,24: rem up arrow
- 110 data 24,24,24,24,255,126,60,24: rem down arrow
- 120 data 16,48,112,255,255,112,48,16: rem left arrow
- 130 data 8,12,14,255,255,14,12,8,0: rem right arrow
- 140 xp = 211:yp = 214
- 150 dim a$(4)
- 160 a$(0)="@[157][145]": rem up
- 170 a$(1)="a[157]": rem down
- 180 a$(2)="c[157][157]": rem left
- 190 a$(3)="b" : rem right
- 200 x=int(rnd(1)*4)
- 210 cx=peek(xp)
- 220 cy=peek(yp)
- 230 if x=0 and cy=0 then 280
- 240 if x=1 and cy=24 then 280
- 250 if x=2 and (cx=0 or cx=40) then 280
- 260 if x=3 and (cx=39 or cx=79) then 280
- 270 printa$(x);
- 280 geta$:ifa$=""then200
- 290 poke 648,os:poke53272,v2:poke 56576,v1
-