mirror of
https://github.com/irmen/prog8.git
synced 2024-11-01 15:07:10 +00:00
32 lines
624 B
Lua
32 lines
624 B
Lua
%import c64utils
|
|
%option enable_floats
|
|
|
|
~ main {
|
|
|
|
const uword width = 320
|
|
const uword height = 200
|
|
|
|
sub start() {
|
|
|
|
vm_gfx_clearscr(0)
|
|
|
|
float t
|
|
ubyte color
|
|
|
|
while(1) {
|
|
float x = sin(t*1.01) + cos(t*1.1234)
|
|
float y = cos(t) + sin(t*0.03456)
|
|
vm_gfx_pixel(screenx(x), screeny(y), color//16)
|
|
t += 0.01
|
|
color++
|
|
}
|
|
}
|
|
|
|
sub screenx(x: float) -> word {
|
|
return floor(x * flt(width)/4.1) + width // 2
|
|
}
|
|
sub screeny(y: float) -> word {
|
|
return floor(y * flt(height)/4.1) + height // 2
|
|
}
|
|
}
|