rem File Showcase

rem Standard Setup Code for all examples
set text font "arial" : set text size 20
set text to bold : set text transparent

rem Arra to hold data
type pos x y endtype
dim coord(100) as pos

rem Mainloop
coordmax=0
do

rem a pretty backdrop
prettybackdrop()

rem Title
center text screen width()/2,20,"SIMPLE DATABASE OF CO-ORDINATES"
center text screen width()/2,screen height()-30,"Click To Draw Lines then Press [R] to Replay"

rem Show coords so far
for n=0 to coordmax-1
 dot coord(n).x,coord(n).y
next n

rem Record or Playback
if mouseclick()=1
 if cl=0
  coord(coordmax).x=mousex()
  coord(coordmax).y=mousey()
  inc coordmax : if coordmax>99 then coordmax=99
  cl=1
 endif
else
 cl=0
endif

rem Playback
if inkey$()="r"

 rem Save data
 if coordmax>0
  delete file "coordata.dat"
  open to write 1,"coordata.dat"
  write file 1,coordmax
  for n=0 to coordmax
   write file 1,coord(n).x
   write file 1,coord(n).y
  next n
  close file 1
 endif

 rem Clear data
 for n=0 to 100
  coord(n).x=0
  coord(n).y=0
 next n

 rem Load data
 open to read 1,"coordata.dat"
 read file 1,coordmax
 for n=0 to coordmax
  read file 1,coord(n).x
  read file 1,coord(n).y
 next n
 close file 1

 rem Draw data
 for n=0 to coordmax-1
  if n>0 then line nx,ny,coord(n).x,coord(n).y
  nx=coord(n).x
  ny=coord(n).y
  sleep 100
 next n
 sleep 2000

 rem Reset write ptr
 coordmax=0

 endif

rem Update screen
sync

rem Endloop
loop

rem Pretty Backdrop Function
function prettybackdrop()
 box 0,0,640,480,rgb(0,128,128),rgb(128,0,0),rgb(128,0,128),rgb(128,128,0)
endfunction
