I'm in the very early stages of developing a platform game in Flash CS3 using ActionScript 2. Previously, I've always just instructed the player to use the WASD keys to control the player. In this game, I'm adding the possibility to use either WASD or arrow keys.

The problem that I've run into, is that when two keys that perform the same action (the right arrow and "d" key for example) the action is performed twice. How can I disable one key if the other is being pressed?

Here's the code I'm working on: http://pastie.org/9665826[1]

Any tips?

The simplest solution would be to combine the checks for equivalent button actions, instead of performing them separately:

if (Key.isDown(Key.RIGHT) || Key.isDown(68)){
	_x += speed;
}

So it wouldn't matter whether one or both keys were pressed, the check would return true either way and only add the speed once.

The simplest solution would be to combine the checks for equivalent button actions, instead of performing them separately:

if (Key.isDown(Key.RIGHT) || Key.isDown(68)){
	_x += speed;
}

So it wouldn't matter whether one or both keys were pressed, the check would return true either way and only add the speed once.

Ah, very nice. That worked like a charm, thanks!