Quirky has a good point. What you could do is texture a plain with the appropriate pic, and set the cull on (or off, whichever, removes black.
I actually wrote some code a while back to work with a GH guitar I acquired from work. It would randomly choose a button combination, set up the key buttons, take the input from the guitar and see if you strum correctly (I think I got that part working). If you want it as reference, here is the code: (note it won't work because it is looking for the guitar and it reqs some images, but you should be able to see how it works)
speed=1
dim frets(5)
start=timer()
randomize timer()
load image "gfret.BMP",1
load image "rfret.BMP",2
load image "yfret.BMP",3
load image "bfret.BMP",4
load image "ofret.BMP",5
load image "gffret.BMP",11
load image "rffret.BMP",12
load image "yffret.BMP",13
load image "bffret.BMP",14
load image "offret.BMP",15
perform checklist for control devices
set control device checklist string$(1)
sprite 11,50,400,11
sprite 12,100,400,12
sprite 13,150,400,13
sprite 14,200,400,14
sprite 15,250,400,15
sync on
create bitmap 1,640,480
do
buttons=rnd(29)+1
fretworks(buttons*1.)
sprite 1000,50,0,1000
repeat
if joystick fire x(0)=1
frets(1)=1
else
frets(1)=0
endif
if joystick fire x(1)=1
frets(2)=1
else
frets(2)=0
endif
if joystick fire x(3)=1
frets(3)=1
else
frets(3)=0
endif
if joystick fire x(2)=1
frets(4)=1
else
frets(4)=0
endif
if joystick fire x(4)=1
frets(5)=1
else
frets(5)=0
endif
sprite 11,50,400,1+(frets(1)*10)
sprite 12,100,400,2+(frets(2)*10)
sprite 13,150,400,3+(frets(3)*10)
sprite 14,200,400,4+(frets(4)*10)
sprite 15,250,400,5+(frets(5)*10)
sprite 1000,sprite x(1000),sprite y(1000)+speed,1000
if joystick slider c()<>-1 and strum=0
` diff#=timer()-start
` diff#=diff#/1000
` print diff#
strums#=timer()
strum=1
endif
if joystick slider c()=-1 then strum=0
sync
until sprite y(1000)>=350
frethit#=timer()
expnum=buttons
fret=checkfret(expnum)
diff#=frethit#-strums#
` print expnum
` print fret
print diff#
if fret=expnum
if abs(diff#)<400
inc speed
else
speed=1
endif
endif
delete sprite 1000
strums#=0
loop
end
function checkfret(expnum)
frets=0
if joystick fire x(0)=1
inc frets,1
endif
if joystick fire x(1)=1
inc frets,2
endif
if joystick fire x(3)=1
inc frets,4
endif
if joystick fire x(2)=1
inc frets,8
endif
if joystick fire x(4)=1
inc frets,16
endif
endfunction frets
REM Posted on codebase by kevil on May 23, 2003
function ln(answer#)
e#=2.71
ln#=sqrt(answer#/e#)
repeat
ln#=ln#-(((e#^ln#)-answer#)/(e#^ln#))
until abs((e#^ln#)-answer#)<=0.001
endfunction ln#
function fretworks(current#)
if bitmap exist(1) then delete bitmap 1
create bitmap 1,640,480
repeat
x#=ln(current#)/ln(2.0)
if (x#-int(x#))>=.9 and x#<4
x#=int(x#)+1
endif
x=x#
paste image x+1,x*50,100
current#=current#-(2^x)
until current#<=0
get image 1000,0,50,640,150
set current bitmap 0
endfunction
Sorry for the messy code, I finished it and had begun to move on to the next step in my plan (alter the guitar to use strings instead of buttons) and use this program to test it. Never got around to the guitar itself though.
Great Quote:
"Time...LINE??? Time isn't made out of lines...it is made out of circles. That is why clocks are round!" -Caboose
