Simple If Then Else Scripting in TF2

Source: https://cagricelebi.com/blog/simple-if-then-else-scripting-in-tf2/

Not only Team Fortress 2, all Half-Life 2 games actually. Yeap, it's easy. A friend of mine asked me something like this
- I want to make the "g" key make the fov 90 on a press and 75 on the other press. It should toggle.

The pseudo code is like this at the first sight,

if (on keypress g) {
    if (fov==90) {
        fov=130;
        break;
    }
    if (fov==130) {
        fov=90;
        break;
    }
}

But as far as I know, there is no if then else logic on that platform. There is only bindings or aliases for the time being. So the algorithm is a bit more complicated, like calling functions with a global variable,

method1{
fov=90;
on keypress g: call method2;
}

method2{
fov=130;
on keypress g: call method1;
}

on keypress g: call method1;

This works like changing the binding of keypress g, which calls a method. The methods do 2 jobs; 1st changing the fov setting, 2nd changing which method to be called on keypress g.

The final code is like this.

alias ws1 "fov_desired 75; bind g ws2"
alias ws2 "fov_desired 90; bind g ws1"
bind g ws1

Here, each time you press g, the fov is toggled between 90 and 75.

You may code different if/else statements like this approach. The algorithm is a bit complex but that is the only choice with the current system.

I hope it works.