OK guys, thanks for the input, as I thought, blitz has no procedure or method support so one has to work around the problem.
Breaking it up into many small function works but one can end up with a lot of functions in that way, nonetheless, it works.
Sure, I'm aware of Gosub but I learned it's not good programming practise, code should flow, not jump around.
Also, while one can use global variables they take up more memory which although might not be substantial to cause a problem is again not good practise if they can be passed to functions.
Anyway, thanks again, will use a mixture of multiple functions, global variables and types to get the job done.
Breaking it up into many small function works but one can end up with a lot of functions in that way, nonetheless, it works.
Sure, I'm aware of Gosub but I learned it's not good programming practise, code should flow, not jump around.
Also, while one can use global variables they take up more memory which although might not be substantial to cause a problem is again not good practise if they can be passed to functions.
Anyway, thanks again, will use a mixture of multiple functions, global variables and types to get the job done.