mirror of
https://github.com/irmen/prog8.git
synced 2024-07-05 06:29:02 +00:00
29 lines
600 B
Lua
29 lines
600 B
Lua
%import textio
|
|
%import floats
|
|
%zeropage floatsafe
|
|
|
|
; Note: this program is compatible with C64 and CX16.
|
|
|
|
; TODO why has the prg become bigger since register args?
|
|
|
|
main {
|
|
|
|
struct Ball {
|
|
float t
|
|
ubyte color
|
|
}
|
|
|
|
sub start() {
|
|
|
|
Ball ball
|
|
|
|
repeat {
|
|
ubyte xx=(sin(ball.t) * txt.DEFAULT_WIDTH/2.1) + txt.DEFAULT_WIDTH/2.0 as ubyte
|
|
ubyte yy=(cos(ball.t*1.1356) * txt.DEFAULT_HEIGHT/2.1) + txt.DEFAULT_HEIGHT/2.0 as ubyte
|
|
txt.setcc(xx, yy, 81, ball.color)
|
|
ball.t += 0.08
|
|
ball.color++
|
|
}
|
|
}
|
|
}
|