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# little example program: animate a line in text-mode
#
# To run (on Linux and x86):
# $ git clone https://github.com/akkartik/mu
# $ cd mu
# $ ./translate_mu prototypes/tile/1.mu
# $ ./a.elf
# You should see a line drawn on a blank screen. Press a key. You should see
# the line seem to fall down the screen. Press a second key to quit.
# https://archive.org/details/akkartik-2min-2020-07-01
fn main -> exit-status/ebx: int {
clear-screen
move-cursor-on-screen 5, 5
print-string-to-screen "_________"
enable-keyboard-immediate-mode
var dummy/eax: byte <- read-key
var row/eax: int <- copy 5
{
compare row, 0xe # 15
break-if-=
animate row
row <- increment
sleep 0 0x5f5e100 # 100ms
loop
}
var dummy/eax: byte <- read-key
enable-keyboard-type-mode
clear-screen
exit-status <- copy 0
}
fn animate row: int {
var col/eax: int <- copy 5
{
compare col, 0xe
break-if-=
move-cursor-on-screen row, col
print-string-to-screen " "
increment row
move-cursor-on-screen row, col
print-string-to-screen "_"
decrement row
col <- increment
loop
}
}
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