Running an instance of a process.

[Sslaxx]

OK, so for a simple process-using program so far I have this:

Código: [Seleccionar]

/*
  LinuxLander/BennuGD
*/

import "mod_say"

Const
 MoveBaseStart = 3; // The starting value for moving the vertical base.
End

Declare Process Test ()
 Private
 End
 Public
 End
End

Global
 int GameState = 0; /**< 0 = playing, 1 = win, -1 = went off edges of screen, -2 = missed the base. */
 int PlayerX = 0; /* The player's X location. */
 int PlayerY = 0; /* Player's Y location. */
 int BaseX = 0; /* As for the player... */
 int BaseY = 0; /* ...but detailing the base's location. */
 int MoveBaseX = 0; /* Controls the horizontal movement of the base. */
 int MoveBaseY = MoveBaseStart; /* Vertical base movement. */
 Test ItsATest; // This is where uncommenting the line below gives an error.
End

Process Main ()
Public
 int a = 0;
Private
Begin
// ItsATest (); // Uncommenting this line causes the compiler to give an error.
 Test ();
 frame;
OnExit
 say ("Thanks for playing!");
End

Process Test ()
Begin
 say (id);
 frame;
End
What I want to know is - how does BennuGD call an instance of a process (like ItsATest)? Can it? It can call the process itself, but attempting to call the instance of the process gives:

/home/stuart/tmp/2/LinuxLander.prg:26: error: Undefined procedure ( token error: "ITSATEST" ).

Is what I'm asking possible? I'm wondering if the signal command would do what I want, but I'm not sure. Advice?

Interestingly, this is not the line that causes the error, that's the ItsATest (); statement.

[SplinterGU]

but if you don't have any procedure named IsATest... you have a procedure named Test.

[Sslaxx]

The example here - http://wiki.bennugd.org/index.php?title=ProcessID - intimates that this should be possible, though? As it calls the functions of an instance of the process and not of the process itself?

So how do multiple instances of a process work? Or am I totally misunderstanding how a process works here? Most of my programming knowledge is with C++ and languages that handle classes in a similar way. It's pretty obvious that classes != processes, just need to understand how processes work.

[SplinterGU]

here

Test ItsATest; // This is where uncommenting the line below gives an error.

you don't define a procedure, you only define a variable that can be used for access to public vars of procedure named Test.

[Sslaxx]

Makes sense.

So you can't have multiple instances of a process, am I correct? That said, seeing as I barely know the language so far I haven't any idea of how to do what I want with Bennu. But I don't know where to look to find out more. Any advice?

[SplinterGU]

you can have multiples instances of a process... you must call it the times that you wish.

p.e.

begin

Test(); // first instance
Test(); // second instance
Test(); // third instance

...

end

the problem with your test procedure is that it start, say a text, and exit... you must use a loop with a frame if you want that it still alive.

[handsource-dyko]

And, you can store the processes unique identification code (id) in a integer variable for use in functions that interact with processes.
Also processes have a parent/child relationship.

[SplinterGU]

And, you can store the processes unique identification code (id) in a integer variable for use in functions that interact with processes.
Also processes have a parent/child relationship.

NO!

you can't store any value in id local var, you can use it (read), but the value of this var is set by the bennugd's core automaticly

[handsource-dyko]

Oops. I meant you can do things like:

Código: [Seleccionar]


int my_proc=proc(x,y);