keep staring at the middle of the screen.
hypnotic ...
' trippy color-cycling thing
' jb
Strict
framework brl.glmax2d
Import brl.linkedlist
Import brl.random
Const SW=640 , SH=480
Const ASP=(SW-SH)/2
Const NUMOVALS=34 , STEPSIZE=12
Type rgbtype
Field red,green,blue
End Type
Global list:TList=CreateList()
For Local d=1 To NUMOVALS
Local c:rgbtype=New rgbtype
ListAddLast list,c
Next
SeedRnd MilliSecs()
Global radd=Rand(1,5)
Global gadd=Rand(1,5)
Global badd=Rand(1,5)
Global nred,ngreen,nblue
Graphics SW,SH
HideMouse
While Not KeyHit(KEY_ESCAPE)
If Rand(100)>80
radd=Rand(-14,14) ; gadd=Rand(-14,14) ; badd=Rand(-14,14)
endif
Local c:rgbtype=rgbtype(list.Last())
If nred+radd<0 Or nred+radd>255 radd=-radd
If ngreen+gadd<0 Or ngreen+gadd>255 gadd=-gadd
If nblue+badd<0 Or nblue+badd>255 badd=-badd
nred:+radd ; ngreen:+gadd ; nblue:+badd
list.RemoveFirst()
c=New rgbtype
ListAddLast list,c
c.red=nred ; c.green=ngreen ; c.blue=nblue
Cls
Local s=-80
For c=EachIn list
SetColor c.red,c.green,c.blue
DrawOval s,s-ASP+2,SW-s-s,SW-s-s-4
s=s+STEPSIZE
Next
Flip
FlushMem
Wend
End
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