View pico racer (c64)
0 rem .-==: pico.racer :==-.
1 j=56320:p=1444:r=119:l=r+4:c=.001:printchr$(147)
2 w=peek(j):ifw=rthenx=x+1
3 ifw=lthenx=x-1
4 o=15+int(sin(m*.1)*3):ifm>20thens=s-(peek(p+x)=32)
5 pokep+x,81:printspc(o)"";:fori=0to5:ifrnd(0)>bthenprint":";:goto7
6 print" ";
7 next:pokep+x,66:m=m+1:b=b+c:prints:ifs<10thengoto2
8 print,"miles:";m
View pattern drawing performance (c64)
0 rem char screen pattern drawing methods and performance / commodore basic v2.0 (c64)
2 rem results for lines:
3 rem 10-> 18s (!)
4 rem 20-> 9s (same as 10, but twice as fast)
5 rem 30-> 3s (no PRNG? waay faster still)
6 rem 40/50-> <= 1s (cashed string 'brush' with and without PRNG, pretty fast)
7 rem all: <= 14s
9 ti$="000000"
10 for i=0 to 999: poke 1024+i,160+rnd(0)+0.5: next i
20 a=1024:b=2023:c=160:fori=atob:pokei,c+rnd(.)+.5:next
View joystick test (c64)
10 rem joystick port test mini tool, press <space> to switch ports
20 p=56320:s=0
30 print" {return*2}{cyan} joystick (#"str$(2-s)") port"p+s"{return*2}"
40 j=peek(p+s): print"{up*2}{light gray} 0 1 2 3 4 5 6 7 val{light blue}"
50 geta$:if a$=" " then s=abs(s-1):print"{up*4}";:goto 30
60 print abs((jand1)>0)abs((jand2)>0)abs((jand4)>0)abs((jand8)>0);
70 print abs((jand16)>0)abs((jand32)>0)abs((jand64)>0)abs((jand128)>0);j
80 goto 40
View typefaster (c64)
0 c$=chr$(65+rnd(.)*26):printc$"?";:fori=sto4^5:next:s=s+9:geta$:printa$:ifa$=c$thengoto0
View femto racer (c64)
4 rem femto racer; press <space> (or not) to stay on the road
6 printspc(9+sin(f)*6+6+sin(f*2)*5)"{white}: {green}:{gray}"m:f=f+.1:geta$:p=p+(a$=" ")*2+1
8 q=4^5+p:m=m+1:ifpeek(q)<>58thenpokeq,22:goto6
View basic chr$(32) adventure (c64)
10 print"{clear}{down*8}{14}{red}dodge!{light blue}{return}{reverse on}{162*21}";:s=54296
20 sc=1024:py=0:lv=3:w=40:t=10:ti$="000000":js=56320:poke53280,6:cl=646:zz=198
30 j=peek(js)and3:if(j<>3)thenpy=py-(j=1)+(j=2):py=pyand7
40 sp=sc+(t+py)*w+t:pokesp,62:pokesc+(t+int(rnd(.)*8))*w+19,w:pokes,2:pokes,.
50 print"{home}{down*9}":fori=.to7:print" {delete} ":next:print
60 ifpeek(sp)<>32thenlv=lv-1:pokecl,2:pokes,9:pokes,.
70 print"{up}{reverse on}>"str$(lv)"{space*12}"ti$"{light blue}":iflv>.thengoto30
80 print"{up}{reverse on}game over,score:":pokezz,.:waitzz,1:run
View analogue mouse test (c64)
10 rem analogue mouse test tool
12 rem - movement detection by polling SID registers s+25/26
14 rem - left/right buttons detection by polling control port #1
16 s=54272: js=56321
18 print"{reverse on}{down}analogue mouse test{reverse off}{down*4}"
20 y$="{light gray}yes{light blue}":n$="{gray}no {light blue}"
22 h$=n$: v$=n$: lmb$=n$: rmb$=n$
24 ho=peek(s+25):vo=peek(s+26)
26 fori=.to39:next
28 if ho<>peek(s+25) then h$=y$
View click beat sequence (c64)
0 b$="19243342":fori=1to8:poke54296,val(mid$(b$,i,1)):pokes,.:forj=.to99:nextj,i:goto.
View joymin.asm
; lazy joystick test
* = $7c ; auto start in VICE
;
LDA $DC00 ; get port byte
STA $05F4 ; mid-screen
BVC *-6 ; 8 bytes total
View joyloop.asm
; minimal joystick test #3, 21 byte loop version; @ = not set, A = set
* = $1000
INIT LDY #8 ; init loop for checking all joystick port bits
LDA $DC00 ; load joystick port byte
LOOP PHA ; make a copy and put it on the stack
AND #1 ; least significant bit set?