Object Oriented SQF Scripting and Compiling

[code34 248]

:// so, how can we set a position private variable ?

MEMBER("position", [0,0,0]);

if i understand, if BIS add somes preprocessor features more elaborated we can do better thing ?

[naught 6]

:// so, how can we set a position private variable ?

MEMBER("position", [0,0,0]);

if i understand, if BIS add somes preprocessor features more elaborated we can do better thing ?

/* You can use either this: */

private ["_var"];
_var = [0,0,0];
MEMBER("position",_var);

/* Or this: */

#define VAR [0,0,0]
MEMBER("position",VAR);

And yes, if local paths are fixed (ie. "../") then it would be easier to include files within a mission and make it feasible to include a header in each file, but the array-comma issue in macros is a problem that would just slow the preprocessor down for close to no benefit since other alternatives are available.

[code34 248]

mmm, i did another try

#include "oop.h"

CLASS("INSTANCE")
	PRIVATE VARIABLE("array","position");
	PUBLIC FUNCTION("object","constructor") {
		private ["_position"];
		_position = [0,0,0];
		MEMBER("position", _position);
	};
	PUBLIC FUNCTION("array","getPosition") FUNC_GETVAR("position");
	PUBLIC FUNCTION("array","setPosition") {
		MEMBER("position",_this);
	};
	PUBLIC FUNCTION("string","deconstructor") {
		DELETE_VARIABLE("position");
	};
ENDCLASS;

_instance = ["new"] call INSTANCE;
["setPosition", position player] call _instance;
_position = "getPosition" call _instance;

hint format["%1", _position];

it seems _position is undefined now, it s a bit complex to fix it :(

[naught 6]

mmm, i did another try

#include "oop.h"

CLASS("INSTANCE")
	PRIVATE VARIABLE("array","position");
	PUBLIC FUNCTION("object","constructor") {
		private ["_position"];
		_position = [0,0,0];
		MEMBER("position", _position);
	};
	PUBLIC FUNCTION("array","getPosition") FUNC_GETVAR("position");
	PUBLIC FUNCTION("array","setPosition") {
		MEMBER("position",_this);
	};
	PUBLIC FUNCTION("string","deconstructor") {
		DELETE_VARIABLE("position");
	};
ENDCLASS;

_instance = ["new"] call INSTANCE;
["setPosition", position player] call _instance;
_position = "getPosition" call _instance;

hint format["%1", _position];

it seems _position is undefined now, it s a bit complex to fix it :(

When you call getPosition, you're passing a nil parameter to the object, but since your getPosition object member actually expects an array (look below), it won't find an available member and return nil.

So this:

PUBLIC FUNCTION("array","getPosition") FUNC_GETVAR("position");

Should be this:

PUBLIC FUNCTION("","getPosition") FUNC_GETVAR("position");

[code34 248]

When you call getPosition, you're passing a nil parameter to the object, but since your getPosition object member actually expects an array (look below), it won't find an available member and return nil.

I understand that an array is expected as argument, but i don't understand how the search/eval is done.

If i well understand we can have 2 functions with the same name but different arguments expected ?

example:

PUBLIC FUNCTION("","getPosition") FUNC_GETVAR("position");
PUBLIC FUNCTION("string","getPosition") {
hint _this;
};

Edited January 10, 2014 by code34

[naught 6]

I understand that an array is expected as argument, but i don't understand how the search/eval is done.

If i well understand we can have 2 functions with the same name but different arguments expected ?

example:

PUBLIC FUNCTION("","getPosition") FUNC_GETVAR("position");
PUBLIC FUNCTION("string","getPosition") {
hint _this;
};

Yes, you can, it searches top-down for any function which both its name and parameters (note: return value is NOT specified) match. If none match, it looks for any parents classes (or any classes which it extends) and runs the search there, and this will end and return null when the search is inconclusive and no more parents are found.

[code34 248]

mmm, ok interresting :) do you make some benchmark test to compare thoses objects vs other build in object like memory or cpu test ?

[naught 6]

mmm, ok interresting :) do you make some benchmark test to compare thoses objects vs other build in object like memory or cpu test ?

I'm assuming you mean comparing the objects that this OOP header creates and those that are built-in to the engine (like units, groups, etc.), and without benchmarking I can tell you that the built-in objects are going to be much faster since they're in native code and don't need to be interpreted like SQF - although when it comes to objects built in SQF, this is as fast as you can get since it uses high-speed switch statements for completely linear performance, and each case for the main switch statement implements lazy evaluation for minimal checking.

[code34 248]

I'm assuming you mean comparing the objects that this OOP header creates and those that are built-in to the engine (like units, groups, etc.), and without benchmarking I can tell you that the built-in objects are going to be much faster since they're in native code and don't need to be interpreted like SQF - although when it comes to objects built in SQF, this is as fast as you can get since it uses high-speed switch statements for completely linear performance, and each case for the main switch statement implements lazy evaluation for minimal checking.

i think it s not it depends of the usecase. I made some bench, in my case, i compare buildin logic object with "INSTANCE" code (above), cause i use logic as variable container and as object with a position on map.

I made the bench with more than 5000 objects.

Create "INSTANCE" and set its position is 70% faster than createvehicle a logic at a position.

When i use the access methods, the performance are a bit slower for "INSTANCE" but logic have a nasty effect on FPS and ... OO give a lot of more possibilities so its very interesting ;)

Edited January 11, 2014 by code34

[code34 248]

then Guy, i did some OO tests this week end.

This is so Nice ! I just start to introduce some objects in my mission.

How many time do you spend to make this magic oop.h ? :)

[naught 6]

then Guy, i did some OO tests this week end.

This is so Nice ! I just start to introduce some objects in my mission.

How many time do you spend to make this magic oop.h ? :)

It too about 3 hours for the first iteration, and it took about 2 more hours of further testing and upgrading to reach its current point.

I'm glad you're interested in OOP, it really increases throughput of coding time when you're working on large projects or in teams since you can settle down and focus on one object and its behaviors instead of having to worry about the entire project and how it'll fit together.

[code34 248]

It too about 3 hours for the first iteration, and it took about 2 more hours of further testing and upgrading to reach its current point.

Do you have already do this work on other langage ? I don't understand why BIS hadn't already do it before.

I already see the benefit, i developped a simple class this week end that i can t develop with procedural development without hundred and hundred lines ;)

[code34 248]

Hi Naught

Another case :)

http://forums.bistudio.com/showthread.php?172094-OO-Marker-oriented-object-marker

[naught 6]

Hi Naught

Another case :)

http://forums.bistudio.com/showthread.php?172094-OO-Marker-oriented-object-marker

Nice job man! Added to the OP :)

[code34 248]

another one ;)

http://forums.bistudio.com/showthread.php?172296-OO-GRID-oriented-object-Strategic-GRID&p=2610832#post2610832

[code34 248]

another one with hashmap :)

http://forums.bistudio.com/showthread.php?181911-Object-Oriented-Hashmap&p=2752350#post2752350

[aloe 10]

Hi Naught, great work. thanks

I am very interested in this approach to scripting.

And in the future, I want to wrap up your work as a module that would oop.h file was available from any folder / subfolder in the mission.

Where can I get the complete documentation describing the methods that I use in class and in the context of an object from the "code"?

Edited November 4, 2014 by Aloe
My error

[code34 248]

Hi Aloe

Informations are directly in the oop.h file or on the first page of this thread :)

[lappihuan 178]

Sadly, all links to the oop.h file are down for me?!?

If it's not just me, could anyone send me the file that already downloaded it?

thanks

Edited November 12, 2014 by Lappihuan

[aloe 10]

Lappihuan, You can get from my GitHub

[lappihuan 178]

thank you

[aloe 10]

Yes, but I was wondering if I can use macros, see "Group: Internal Macros", without unforeseen consequences:

ENSURE_INDEX, CHECK_THIS, CHECK_ACCESS, CHECK_TYPE, CHECK_NIL, CHECK_MEMBER, CHECK_VAR, GETVAR, GETSVAR, GETCLASS, CALLCLASS, MOD_VAR, INC_VAR, DEC_VAR, PUSH_ARR, REM_ARR, GET_AUTO_INC?

Some of these macros are used in first post, I would like to know the full set of available macros

[code34 248]

i think there is no problem if you don't insert macro with already reserved keys (look #define lines) or with enclosed bracket or enclosed chars, that can break the oop.h macros :)

[aloe 10]

code34, I'm afraid you have not understood correctly, this is all the difficulties of translation. I have not (yet) going to expand macros. While only want to know which macros can use and which are not

[code34 248]

yes : )) but we try !

Into the internal group you can normaly use thoses macro. Others are really oriented for the internal working of the oop.h itself

#define GETVAR(var) (_classID + "_" + var)
#define INC_VAR(varName) MOD_VAR(varName,1)
#define DEC_VAR(varName) MOD_VAR(varName,-1)
#define PUSH_ARR(varName,array) MOD_VAR(varName,array)
#define REM_ARR(varName,array) MOD_VAR(varName,array)

---------- Post added at 21:35 ---------- Previous post was at 21:22 ----------

Sadly, all links to the oop.h file are down for me?!?

If it's not just me, could anyone send me the file that already downloaded it?

thanks

No news from Naught since a long while, it seems he deleted most of his Arma work :(