mirror of
https://github.com/irmen/prog8.git
synced 2024-11-23 07:32:10 +00:00
35 lines
756 B
Lua
35 lines
756 B
Lua
%import c64lib
|
|
%import c64graphics
|
|
%zeropage basicsafe
|
|
|
|
|
|
main {
|
|
|
|
sub start() {
|
|
graphics.enable_bitmap_mode()
|
|
draw_lines()
|
|
draw_circles()
|
|
forever {
|
|
}
|
|
}
|
|
|
|
sub draw_circles() {
|
|
ubyte xx
|
|
for xx in 3 to 7 {
|
|
graphics.circle(xx*50-100, 10+xx*16, (xx+6)*4)
|
|
graphics.disc(xx*50-100, 10+xx*16, (xx+6)*2)
|
|
}
|
|
}
|
|
|
|
sub draw_lines() {
|
|
ubyte i
|
|
for i in 0 to 255 step 4 {
|
|
uword x1 = ((320-256)/2 as uword) + sin8u(i)
|
|
uword y1 = (200-128)/2 + cos8u(i)/2
|
|
uword x2 = ((320-64)/2 as uword) + sin8u(i)/4
|
|
uword y2 = (200-64)/2 + cos8u(i)/4
|
|
graphics.line(x1, lsb(y1), x2, lsb(y2))
|
|
}
|
|
}
|
|
}
|