Re: [Dev-C++] Help with Game Problem
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Re: [Dev-C++] Help with Game Problem
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From: Brian S. <blu...@at...> - 2003-03-12 04:11:23
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Thanks! That got me heading in the right direction. Now all I need to do is
set the counter to work for multiple bullets being shot (because each time I
fire a new bullet, the old is deleted and a new is started) or limit the
number set the shot timer to not let the player shoot again until the last
is finished. Both should be fairly simple and I should be able to get them
going, but if not, you will hear from me again ;-) .
Thank you again for all the help!
-Brian
----- Original Message -----
From: "Tulius Lima" <tul...@ho...>
To: <blu...@at...>; <Dev...@li...>
Sent: Tuesday, March 11, 2003 9:09 PM
Subject: Re: [Dev-C++] Help with Game Problem
> Brian,
>
>
> I think you should re-organize your bullet code. Break the
upbullet()
> function in two: one that setup the bullet, and another one to update the
> bullet state.
>
> The first function should have the code that is located before you
> do..while loop, and it should be called when you detect the fire key
press.
>
> This second function should have the code thats inside your
do..while
> loop (but not the loop itself), and should be called from within your game
> loop (so you won't need the loop and the ship, as well as your other game
> entities, will be able to move).
>
> Hope this helps.
>
>
>
> Tulius
>
>
>
> >From: "Brian Savells" <blu...@at...>
> >To: "Allegro Group" <Dev...@li...>
> >Subject: Re: [Dev-C++] Help with Game Problem
> >Date: Tue, 11 Mar 2003 19:22:34 -0600
> >
> >While trying to implement your code, I noticed that it was very similar
to
> >my own method that I was using. I was setting a flag called end_game to 0
> >and if the escape key was pressed it would change to 1, therefore ending
> >the
> >game and shutting down. I implemented the new code anyways in hopes that
it
> >would work, but got the same results as with mine. Heres what my code
looks
> >like:
> >
> >void do_game()
> >{
> > do {
> > doInterrupt=true;
> > drawtext(); //Displays amount of bullets remaining
> > player1(); //These functions look at all the possible input keys
> > player2();
> > }while(!key[KEY_ESC]);
> >}
> >
> >My bullet function looks like this:
> >
> >void upbullet() //For bottom ship, bullet moving up
> >{
> > if(bcb<=0) { //check the counter. If 0, do nothing
> > }
> > else { //otherwise do this
> > bcb--; //subtract one from the counter
> > bottomb.x = bottom.x3; //bottomb is the name of my bullet structure
> > //bottom.x3 is reffering to the
> >bottom ship.
> > bottomb.y = bottom.y3 - 12;
> > do {
> > bottomb.draw(screen); //Draw the bullet
> > rest(1); // rest so that you can see it moving
> > bottomb.undraw(screen); // Undraw it
> > bottomb.y-=2; //move it up the screen 2
> > }while (bottomb.y >=-15); //do it until off the screen
> > }
> >}
> >
> >Now this works, but every time that you shoot, you can see the bullet
> >moving
> >up, but are not able to do anything else (like move the ship or fire
> >again),
> >because it is caught in the do-while loop for the bullet. How would I get
> >around this and let it shoot/do anything else while the bullet is still
> >moving upwords?
> >
> >Thanks!
> >-Brian
> >
> >----- Original Message -----
> >From: "Brian Savells" <blu...@at...>
> >To: <Dev...@li...>
> >Sent: Tuesday, March 11, 2003 6:45 PM
> >Subject: Re: [Dev-C++] Help with Game Problem
> >
> >
> > > Oh yes, forgot to mention that I am using the Allegro library. Ill try
> >the
> > > method that you gave me and see if that gets me anywhere.
> > >
> > > -Brian
> > >
> > >
> > > ----- Original Message -----
> > > From: "Robson Bernard" <rob...@su...>
> > > To: "Brian Savells" <blu...@at...>
> > > Sent: Tuesday, March 11, 2003 6:43 PM
> > > Subject: Re: [Dev-C++] Help with Game Problem
> > >
> > >
> > > > Have you tried allegro game library (compatible with Dev-C++)? With
> > > allegro
> > > > you have some great stuff to make games. Try www.talula.demon.co.uk
> >and
> > > > click the link to allegro library.
> > > >
> > > > Below a brief example of how to set interrupt handlers to manage
game
> > > timing
> > > > with allegro and c++. It makes a very stable timing:
> > > >
> > > > Hope it helps!
> > > >
> > > >
> > > > // this boolean variable prevents from jumping for the next game
step
> > > before
> > > > the time expected;
> > > > volatile bool doInterrupt;
> > > >
> > > >
> > > >
> > > > void refresh()
> > > > {
> > > > doInterrupt = false;
> > > > }
> > > > END_OF_FUNCTION(refresh)
> > > >
> > > >
> > > >
> > > > void doGame()
> > > > {
> > > > do {
> > > > doInterrupt = true; //sets another step
> > > >
> > > > //game stuff
> > > >
> > > > while(doInterrupt); //while doInterrup is true, the
game
> >does
> > > > not advance for the next step.
> > > > //this interval is set by
> >the
> > > > argument in the Install_Int funtion (in miliseconds).
> > > >
> > > > } while(!key[KEY_ESC]);
> > > >
> > > > }
> > > >
> > > >
> > > >
> > > > // this function sets an interrupt handler calling function
> >'refresh()'
> > > > every 50ms.
> > > > Install_int(refresh, 50);
> > > >
> > >
> > >
> > >
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