Curves are entirely different beasts.
Look up ‘bezier curves’, both quadratic and cubic, and possibly splines.
(Note that it is impossible to reticulate a spline.)
If you only need 90 degree angles then it’s not too bad, but other angles would be a big problem.
Using untextured polygons rather than sprites would make matters easier.
(That reminds me, I’ve still got loads of outstanding issues on that.)
@Freezingsnail, do you want me to move this to another thread or a PM?
Or perhaps I should just leave the comments here for now and you can PM me to continue the rest without any moves?
By not visiting the forum enough.
A regular is only a regular if they visit regularly.
Something on topic, we’ve got “storm Erik” here.
Aparently this happened down in Dorset:
(Some articles here and here.)