keyDown

[sbondo1234 6]

I was searching up how to set up a custom bind that would execute some code. I was able to find code which did exactly what I want it to do with some editing, but I have no idea how any of it works.

The code is this:

waitUntil {!isNull(findDisplay 46)};
(findDisplay 46) displaySetEventHandler ["KeyDown","_this call keyspressed"];

keyspressed = {
    _shift =_this select 2;
    _handled = false;
    switch (_this select 1) do {

    case 35: {//H key
            if (_shift) then {
                player action ["SwitchWeapon", player, player, 100];
            };
        };
    };
    _handled;
};

I generally can read this and understand what it is doing.

This makes it so that when I click shift+h it executes the player action, I can understand the case 35 is the H key with DIK KeyCodes, but how does this script know that you need to press the shift key as well?

[POLPOX 779]

(on)KeyDown EventHandler will return an array with 5 elements, display, key, shift, ctrl, alt.

And the last 3 values are booleans. In that case, if (_shift) then { }; is detecting the shift.

For more info, go check with some debug commands.

waitUntil {!isNull(findDisplay 46)};
(findDisplay 46) displaySetEventHandler ["KeyDown",{
	systemChat str _this;
}];

 

[sbondo1234 6]

1 minute ago, POLPOX said:

(on)KeyDown EventHandler will return an array with 5 elements, display, key, shift, ctrl, alt.

And the last 3 value is booleans. In that case, if (_shift) then { }; is detecting the shift.

For more info, go check with some debug commands.

waitUntil {!isNull(findDisplay 46)};
(findDisplay 46) displaySetEventHandler ["KeyDown",{
	systemChat str _this;
}];

 

Ah, so _shift is a default value in the game's engine which will always be set for the key SHIFT?

[POLPOX 779]

Just now, sbondo1234 said:

Ah, so _shift is a default value in the game's engine which will always be set for the key SHIFT?

Yes. Even if you don't press Shift, the _this#2 will always returns the Shift state. Same goes for ctrl(_this#3) and alt(_this#4).

[sbondo1234 6]

1 minute ago, POLPOX said:

Yes. Even if you don't press Shift, the _this#2 will always returns the Shift state. Same goes for ctrl(_this#3) and alt(_this#4).

Thanks a lot! The code makes a lot more sense now!