Shooting in 8 directions

[geebee]

Greetings..

New problem for you guys to chew on:

In my little shooter game I control the player movement with the arrow keys, space for shooting and wasd for aiming up,down,left and right.

If the player presses the w (aim north) AND the d (aim east) keys at the same time I want the player to aim northeast.

How do I achieve that?

Right now my aiming code looks like this:

//aiming
if (Key.isDown(87)) {
this._rotation = 0;
fire();
}
if (Key.isDown(83)) {
this._rotation = 180;
fire();
}
if (Key.isDown(68)) {
this._rotation = 90;
fire();
}
if (Key.isDown(65)) {
this._rotation = 270;
fire();
}
// aiming end

[ademuk]

longer than i wished, but it works a treat. I've simply nested the additional second button conditionals within the main ones.




onClipEvent (enterFrame) {
if (Key.isDown(87)) {
tmp_rotation = 0;
if (Key.isDown(68)) {
tmp_rotation = 45;
}
if (Key.isDown(65)) {
tmp_rotation = 325;
}
fire();
}

if (Key.isDown(83)) {
tmp_rotation = 180;
if (Key.isDown(68)) {
tmp_rotation = 135;
}
if (Key.isDown(65)) {
tmp_rotation = 225;
}
fire();
}

if (Key.isDown(68)) {
tmp_rotation = 90;
if (Key.isDown(83)) {
tmp_rotation = 135;
}
if (Key.isDown(87)) {
tmp_rotation = 45;
}
fire();
}

if (Key.isDown(65)) {
tmp_rotation = 270;
if (Key.isDown(83)) {
tmp_rotation = 225;
}
if (Key.isDown(87)) {
tmp_rotation = 315;
}
fire();
}

this._rotation = tmp_rotation;
}



Adem G

[nathan99]

one thing adem y r u repeating iur keydowns?

[nathan99]

to get diagonals you would do for example

if (Key.isDown(83) && (Key.isDown(87))) {
//diagonal angle(rotation)
}

[geebee]

Thanks ademuk and Nathan

Your soulutions have brought on another problem with some true/false conditions I have set up for my shooting function, but that is something I can figure out.. until then your answers have gotten me one step further the completion of my game, thank you very much for the quick answers!

[nathan99]

what problems?

[dominicaninja]

I don't know if you guys have had this issue but if you try to set aim keys to the arrow keys and try to aim diagonally AND shoot, you can get a key buffer problem, meaning the third key won't count. I noticed using the 'a' or 's' keys for shooting are safe for aiming diagonally with the arrow keys. Or maybe that depends on your machine?