Program structure
Your every project has to have a main file. By default that is main.um
, but
that can be changed using the main
flag. In your main file you need to
declare an init
function, which needs to be exported. If it isn't
exported, you will receive this error:
error: <PWD>/tophat_main.um (4, 11): Unknown identifier init
In this function, you can set up the window, load resources and register to the
window.onFrame
signal. This signal is emitted on every
frame. The following script will print "init" when it is launched and then
follow up by printing "frame" on every frame.
import (
"signal.um"
"window.um"
)
fn init*() {
window.setup("Main file structure example")
printf("init\n")
window.onFrame.register({
printf("frame\n")
})
}