Noel comments in the video that Blitzkrieg feels like a BASIC program and it is indeed a BASIC program.
I think it is basically a copycat of Blitz although Minter is quoted as the author, maybe to increase sales.
I own an original tape. I may have uploaded a photo of it or the code some time ago. Anyway I'm attaching a zip with the 3 files and the code of the loader and the program. This is the version with the instructions translated in spanish by Indescomp.
It has 3 files, the first one (filename blitkrieg) just disables the RUNSTOP key and loads the graphics data (file CH1) and the BASIC code (file !).
Code: Select all
5 poke36879,8:print"..":poke36869,255
6 no=36877:s1=no-3:s2=no-2:s3=no-1:v=no+1
7 gosub8000
10 print".":gosub6000:print".":ba=7680:co=38400
20 p(1)=60:p(2)=61:p(3)=62:p=22:r=1
30 c(1)=59:c(2)=58:c(3)=63:sc=0
40 bo=46
60 xp(1)=40:xp(2)=41:xp(3)=42
100 zz=dd
105 forx=0to21:fory=0toint(rnd(1)*h)+zz:pokeba+22*21+x-y*22,c(r):pokeco+22
*21+x-y*22,r+3
110 next:t=43+int(rnd(1)*2):pokeco+22*21+x-y*22,r+3:pokeba+22*21+x-y*22,t
115 ift=44thenpokeco+22*21+x-y*22,1:pokeba+22*21+x-y*22,28:pokeba+22*20+x-
y*22,27
116 ift=44thenpokeco+22*20+x-y*22,9
120 r=int(rnd(1)*3)+1:next
130 forx=0to43:poke22*22+x+ba,230:poke22*22+x+co,7:next
140 pokeno,128:pokev,58
150 print"..score"sc".0 .high."hs".0"
200 pokep+ba,32:forx=1to3:pokep+co+x,5:pokep+ba+x,p(x):next
210 pk=peek(p+ba+4):ifpk=32then250
220 ifpk=230then3000
230 goto5000
250 ky=peek(197):ifky<>64andpb=0thengosub1000
260 ifpb<>0thengosub2000
270 fordl=1to((12-h)*2)*10:next:gosub9000
275 ifpb<>0thengosub2000
280 q=peek(no):pokeno,0:pokeno,q
300 p=p+1:goto200
1000 ifpeek(p+24+ba)=230thenreturn
1001 nt=200:pokes3,nt
1005 pb=p+22+2:pokepb+ba,bo:pokepb+co,1:ct=0:lim=int(rnd(1)*d2)+1:return
2000 pokepb+ba,32:pb=pb+22:zz=peek(pb+ba):ifzz=230thenpb=0:pokes3,0:goto70
00
2005 nt=nt-1:pokes3,nt
2010 pokepb+co,1:pokepb+ba,bo:ifzz<>32thenct=ct+1:sc=sc+h-7
2020 ifct>limthenrb=30+rnd(1)*2:pokepb+ba,rb:pokepb+co,peek(pb+22+co):pb=0
:pokes3,0:goto7000
2030 return
3000 print".......wave"h-7"over"
3005 pokeno,0:restore:pokev,63
3010 forz=1to21:readx,y:pokes3,x:fordl=1toy*400:next:pokes3,0:next:pokes3,
0:pokev,58
3016 pokev+1,8
3020 h=h+1:print".":p=22:goto100
5000 forx=15to0step-1:pokev,x:poke36865,38:fory=1to3:pokep+ba+y,xp(x/5):ne
xt:poke36865,37
5010 pokev,48:next:fory=1to3:pokep+ba+y,32:next:pokes3,0
5100 print".........g.a.m.e .o.v.e.r."
5105 pb=0
5110 pokev,15:fory=1to20:forx=140to127step-1:pokeno,x:pokev+1,(xand16)+8:n
ext:next
5115 pokev,48:pokeno,0
5130 print"..press .r. for rules or"
5135 ifsc>hsthenhs=sc
5136 pokev+1,8
5140 print"press .return. to play again"
5142 gosub7000
5145 forx=1to20:geta$:next
5150 geta$:ifa$=""then5150
5160 ifa$="r"then5
5170 ifa$<>chr$(13)then5150
5180 goto10
6000 print".nivel - dificultad (1-5):";:gosub6100:d2=6-dd
6020 print".seleccione nivel(1-5):";:t=dd:gosub6100:e=dd:dd=t:h=8+e:print"
.":return
6100 geta$:x=fre(0):ifval(a$)=0orval(a$)>5then6100
6120 print"."a$".":dd=val(a$)-1:return
7000 print"..score"sc".0 .high."hs".0":return
8000 print".. b l i t z k r i e g......................................"
8010 print".destruya la ciudad desde su bombardero pulsando .space,."
8020 print"para vencer y poder aterrizar en la ciudadenigma!"
8030 print"nueva mision despues de cada aterrizaje..";
8040 fordl=1to6000:next
8050 pokev,15:forx=128to255:pokeno,x:pokes2,255-x+128:pokev+1,(xand16)+40:
next
8060 pokev,48:pokeno,0:pokes2,0:pokev+1,8
8080 print".":return
9000 g=g+1:ifg>1then9100
9010 poke7384,240:poke7391,252:return
9100 g=0:poke7384,252:poke7391,240:return
10000 data207,3,207,1,209,1,209,2,207,1,209,1,207,1,201,1,195,1,191,4,215,
2,209,2,207,.3
10010 data195,.3,209,.3,201,.3,215,1,209,1,207,2,201,2,195,4
