Code: Select all
rem flying text
rem i wrote this quick..please tweak it and
rem post your versions!
rem Enjoy...
gosub initialize
loop:
tp=1
tt=0
do
refresh off
graphics clear 0,0,0
gosub drawtext
yr=(yr+yrr)%360
yrot=yr
tt=tt+1
if tt=18 then gosub addletter
refresh on
until 1=2
return
drawtext:
focus=2000
'fill color 150/255,150/255,0
gosub drawball
for star=1 to numstars
if stars(star)>0 then
xx=starx(star)
yy=stary(star)+sh/2
zz=starz(star)
x=xx*rcos(yrot)-zz*rsin(yrot)+sw/2
z=xx*rsin(yrot)+zz*rcos(yrot)
if z<30 then
br=-z
fill color (br*starr(star))/255,(br*starg(star))/255,(br*starb(star))/255
fill rect x,yy to x+8,yy+8
else
stars(star)=0
end if
end if
next star
return
rem ##########################################
drawball:
fill color .5,.5,1
fill circle sw/2,sh/2 size 140
ang=0
do
xo1=cosines(ang)!yo1=sines(ang)+100
xo2=cosines(ang+20)!yo2=sines(ang+20)+100
'gtriangle 0,0 to xo1,yo1 to xo2,yo2
trix(0)=0
triy(0)=0
trix(1)=xo1
triy(1)=yo1
trix(2)=xo2
triy(2)=yo2
'fill poly trix,triy count 3
'gtriangle 0,0 to -xo1,yo1 to -xo2,yo2
trix(0)=0
triy(0)=0
trix(1)=-xo1
triy(1)=yo1
trix(2)=-xo2
triy(2)=yo2
'fill poly trix,triy count 3
'gtriangle 0,0 to -xo1,-yo1 to -xo2,-yo2
trix(0)=0
triy(0)=0
trix(1)=-xo1
triy(1)=-yo1
trix(2)=-xo2
triy(2)=-yo2
'fill poly trix,triy count 3
'gtriangle 0,0 to xo1,-yo1 to xo2,-yo2
trix(0)=0
triy(0)=0
trix(1)=xo1
triy(1)=-yo1
trix(2)=xo2
triy(2)=-yo2
'fill poly trix,triy count 3
ang=ang+20
until ang>90
return
addletter:
tt=0
lett=asc(mid$(m$,tp,1))
tp=(tp+1)%lm
y=-30
for a=1 to 8
long=80+yrot
for b=0 to 7
temp = and(letters(lett,a),power(b))
if temp>0 then
star=0
c=0
do
if stars(c)=0 then star=c
c=c+1
until star>0 or c=numstars
if star =0 then goto nospace
starx(star)=sines(long)
stary(star)=y
starz(star)=cosines(long)
stars(star)=1
starr(star)=mrc(tp)
starg(star)=mgc(tp)
starb(star)=mbc(tp)
star=star+1
end if
long=long+2
next b
y=y+8
next a
nospace:
return
setup_message:
m$=""
m$=m$&" Hello, it's another odd looking demo. "
m$=m$&" This time, the scrolltext is flying "
m$=m$&"around the ball. The occasional judder you can "
m$=m$&"see is the next letter being added to the scene."
m$=m$&"later. "
lm=len(m$)
dim mrc(lm+400),mgc(lm+400),mbc(lm+400)
cst=1!cfi=lm!red=1!green=1!blue=1!gosub setcolours
cst=9!cfi=16!red=0!green=0!blue=2!gosub setcolours
cst=28!cfi=34!red=1!green=0!blue=0!gosub setcolours
cst=36!cfi=38!red=1!green=1!blue=0!gosub setcolours
cst=252!cfi=257!red=1!green=0!blue=1!gosub setcolours
cst=377!cfi=385!red=0!green=0!blue=1!gosub setcolours
cst=448!cfi=453!red=1!green=0!blue=0!gosub setcolours
cst=546!cfi=553!red=0!green=1!blue=0!gosub setcolours
return
setcolours:
for a=cst to cfi
mrc(a)=red!mgc(a)=green!mbc(a)=blue
next a
return
initialize:
sw=screen_width()
sh=screen_height()
pi=3.1415
numstars=220
gosub setup_message
dim starx(numstars+1)
dim stary(numstars+1)
dim starz(numstars+1),stars(numstars+1)
dim starr(numstars+1),starg(numstars+1),starb(numstars+1)
dim cosines(722),sines(721)
dim rcos(721),rsin(721)
for angle=0 to 720
cosines(angle)=cos(angle*(pi/180))*150
sines(angle)=sin(angle*(pi/180))*150
rcos(angle)=cos(angle*(pi/180))
rsin(angle)=sin(angle*(pi/180))
next angle
dim power(8)
for b=0 to 7
power(b)=2^b
next b
gosub maketext
yr=80!yrr=359
tt=0!tdelay=500
graphics
return
maketext:
dim letters(256,9)
do
read lett
if lett=-1 then return
for a=1 to 8
read letters(lett,a)
next a
until 1=2
return
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