Redirect: C++ Question [Delete me!]

[Dr.Bunshin]

Hey all

I really dont mean to flood with useless noob threads, but could someone tell me where too look to understand how this works:

Code: Select all

v.Y += event.KeyInput.Key == KEY_KEY_W ? 2.0f : -2.0f;

You can explain it if you want. I am sorry for my ignorance.

[Granthus]

Hey all

I really dont mean to flood with useless noob threads, but could someone tell me where too look to understand how this works:

Code: Select all

v.Y += event.KeyInput.Key == KEY_KEY_W ? 2.0f : -2.0f;

You can explain it if you want. I am sorry for my ignorance.

Basically it is saying

Code: Select all

if (event.KeyInput.Key == KEY_KEY_W)
    v.Y += 2.0f;
else
    v.Y += -2.0f;

Personally I would have used some parentheses (bracket things ) to break it up and make it easier to understand - but it is making use of the 'shorthand' if statement format,

(logic test) ? TRUE : FALSE

Hope that helps

Granthus

[khamill]

v.Y (probably a y-axis cordinate) is getting incremented by the result of:

event.KeyInput.Key == KEY_KEY_W ? 2.0f : -2.0f;

This says, if InputKey equals W, increment by 2.0, if not increment by
-2.0. The f on the 2.0 just stands for a floating point number.

Hope this helps.

Kevin

[Dr.Bunshin]

Hey guys!

Thank you so much! Thats about what I was thinking but you made it very clear. That is quite short short-hand if you ask me. Thank you again.