Hi Im having a simple problem. I have a simple car that moves up/down etc...When i hold the up key it accelerates but if at the same time i press the left key to turn (but still holding the up key) it stops accelerating. So i have to re-tap the up key. This happens for any direction. I hope i didnt confuse you. Basically i want to be able to turn while at the same time be able to accelerate. Is there a way to do this? Im using the glut library by the way. Thank You

That should be possible...
How do you check whether a key is pressed or not?
If you post some problem related code, it''s easier to help.
I think nehe has an excellent way to do so in one of his first (or is it in the first one) tutorials.

[My Lousy Page | Kings Of Chaos | Vampires | email.me]

For your keyboard, use Direct Input, you''ll can use 2 keys at the same time otherwise :

if (UP)// Go go if ((UP) && (LEFT))// Go go with left 

========================
Leyder Dylan (dylan.leyder@slug-production.be.tf
http://www.slug-production.be.tf/

If you''re using MSV then you could do it like this.

Create an array like
int keys[256];

catch the WM_KEYDOWN and WM_KEYUP events

switch (pMsg->message){

case WM_KEYDOWN:
keys[pMsg->wParam]=true;
break;

case WM_KEYUP:
keys[pMsg->wParam]=false;
break;

}


then create a function that checks the array repeately.

function checkkeys(){

if(keys[37]){
//GO LEFT
}

if(keys[38]){
//GO UP
}

if(keys[39]){
//GO RIGHT
}

if(keys[40]){
//GO DOWN
}


}

quote:

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Original post by Anonymous Poster
Create an array like
int keys[256];

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Yes, that''s a good suggestion, if you don''t want to use DirectInput... But I think you should just use

bool keys[256];

Glut Kinda sucks when it comes to multiple keypresses...

You'll either have to go with a different framework, or use non-portable code...

How I handled this, is use the LaMothe keypress functions....

#define KEYDOWN(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 1 : 0)#define KEYUP(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 0 : 1)  

then check other keys using
VK_UP, VK_DOWN, VK_LEFT, VK_RIGHT, VK_SPACE...
place this in your keyboardspecfunc(),

if(KEYDOWN(VK_UP) && KEYDOWN(VK_LEFT){ turn left}  

If you decided to Abandon Glut, watch out, these functions catch keypresses even if you lose focus!

(edit, had logic bug in code)

[edited by - dede on May 23, 2003 4:13:50 PM]

oyeah!
sorry, my bad my bad =p

Glut doesnt suck.

In the latest version 3.7, glut supports the detection of KeyUp.
So whenever a key is pressed, u could change a variable to true. Whenever a Keyup is detected, u could change it back to false.

quote:

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Original post by GamerSg
Glut doesnt suck.

In the latest version 3.7, glut supports the detection of KeyUp.
So whenever a key is pressed, u could change a variable to true. Whenever a Keyup is detected, u could change it back to false.

---

Wow, I don''t see that in the documentation...

Ahh, the documentation hasn''t been updated since 3.2...

No wonder

Thanks for the reply guys. Sorry about not replying i had some troubes at home.


Ill try some of your suggestions and see if i can do it.

Thanks Again