If you want something simple you could try to use "simple lines" with the same command as blitz,but there's a problem:the lightning is instantly show.
So you must write a code that after a line (or a bunch of...)start a timer and after the timer as expired anothe part of the lightning is shown.
Something like this:
line x1,y1,x2,y2
line x2,y2,x3,y3
start timer
if start timer is more than 100 and
previously_drawn_lines=true
line x3,y3,x4,y4
line x4,y4,x5,y5
start timer2
if start timer2 is more than 100 and previously_drawn_lines=true
line........
Something similar.
Or if you want something more graphical,you could replace the "lines"with line that you have draw!
So you must write a code that after a line (or a bunch of...)start a timer and after the timer as expired anothe part of the lightning is shown.
Something like this:
line x1,y1,x2,y2
line x2,y2,x3,y3
start timer
if start timer is more than 100 and
previously_drawn_lines=true
line x3,y3,x4,y4
line x4,y4,x5,y5
start timer2
if start timer2 is more than 100 and previously_drawn_lines=true
line........
Something similar.
Or if you want something more graphical,you could replace the "lines"with line that you have draw!