Allegro Wiki - Recent changes [en]

Timers

ZOMGxuan — Fri, 13 Nov 2009 10:17:18 GMT

Yielding the CPU using a semaphore:

← Older revision		Revision as of 10:17, November 13, 2009
Line 175:		Line 175:
	sem_init(&sem_rest, 0, 1);		sem_init(&sem_rest, 0, 1);

-	//for mac os x, named semaphores must be used instead, first by declaring a pointer sem_t* ~~sem_rest~~	+	//for mac os x, named semaphores must be used instead, first by declaring a pointer sem_t* sem_rest_ptr
-	//and then doing ~~sem_rest~~ = sem_open("sem_name", O_CREATE, 0, 1)	+	//and then doing sem_rest_ptr = sem_open("sem_name", O_CREATE, (S_IRUSR \| S_IWUSR), 1)
	//sem_name is the name of the semaphore, which should be unique		//sem_name is the name of the semaphore, which should be unique

Line 211:		Line 211:
	sem_destroy(&sem_rest);		sem_destroy(&sem_rest);

-	//on mac osx, sem_destroy does not work, so do sem_close(~~sem_rest~~) and sem_unlink("sem_name") instead	+	//on mac osx, sem_destroy does not work, so do sem_close(sem_rest_ptr) and sem_unlink("sem_name") instead

	return 0;		return 0;

Talk:Timers

ZOMGxuan — Fri, 13 Nov 2009 09:38:10 GMT

← Older revision		Revision as of 09:38, November 13, 2009
Line 1:		Line 1:
		+	ZOMGxuan -- I've modified goalie's section on semaphore based timing to explain how to use semaphores on Mac OS X, as the functions sem_init and sem_destroy do not work on Mac OS X, and sem_open, sem_close, and sem_unlink must be used instead
		+
	goalieCa -- I've added a section on semaphore based timing for yielding the threads to the cpu. I originally discussed this method on the a.cc forums but here is the latest thread i can remember [http://www.allegro.cc/forums/thread/590932]		goalieCa -- I've added a section on semaphore based timing for yielding the threads to the cpu. I originally discussed this method on the a.cc forums but here is the latest thread i can remember [http://www.allegro.cc/forums/thread/590932]

Timers

ZOMGxuan — Fri, 13 Nov 2009 09:35:40 GMT

Yielding the CPU using a semaphore:

← Older revision		Revision as of 09:35, November 13, 2009
Line 172:		Line 172:
	{		{
	//initialize the semaphore		//initialize the semaphore
		+	//following function works for linux and win32 pthreads
	sem_init(&sem_rest, 0, 1);		sem_init(&sem_rest, 0, 1);
		+
		+	//for mac os x, named semaphores must be used instead, first by declaring a pointer sem_t* sem_rest
		+	//and then doing sem_rest = sem_open("sem_name", O_CREATE, 0, 1)
		+	//sem_name is the name of the semaphore, which should be unique

	allegro_init();		allegro_init();
Line 202:		Line 207:

	remove_int(ticker);		remove_int(ticker);
		+
		+	//destroy the semaphore (important!)
	sem_destroy(&sem_rest);		sem_destroy(&sem_rest);
		+
		+	//on mac osx, sem_destroy does not work, so do sem_close(sem_rest) and sem_unlink("sem_name") instead
		+
	return 0;		return 0;
	}		}

Tutorial 2: TrueType Fonts and Display Modes

C Bird — Tue, 10 Nov 2009 19:32:33 GMT

← Older revision		Revision as of 19:32, November 10, 2009
Line 15:		Line 15:
	#include <allegro5/allegro5.h>		#include <allegro5/allegro5.h>
	#include <allegro5/allegro_font.h>		#include <allegro5/allegro_font.h>
-	#include <allegro5/~~allegro_fft~~.h>	+	#include <allegro5/allegro_ttf.h>
	#include <stdio.h>		#include <stdio.h>
	</highlightSyntax>		</highlightSyntax>
Line 166:		Line 166:
	'''Linux users:'''		'''Linux users:'''

-	$ gcc hello1.c -o hello1 -~~la5_ttf~~-4.9.8 -~~la5_font~~-4.9.8 \	+	$ gcc hello1.c -o hello1 -allegro_ttf-4.9.8 -allegro_font-4.9.8 \
-	`~~allegro5~~-config --libs`	+	`allegro-config --libs`

	'''Windows users:'''		'''Windows users:'''

-	> gcc hello1.c -o hello1 -~~la5_ttf~~-4.9.8 -~~la5_font~~-4.9.8 \	+	> gcc hello1.c -o hello1 -allegro_ttf-4.9.8 -allegro_font-4.9.8 \
-	-~~lallegro~~-4.9.8	+	-allegro-4.9.8

	(Replace "-4.9.8" with your version of the library. As of the writing of this article, that was the most recent version, and it is now required of the add-on libraries. Presumably, when the API is stable the version number will be dropped from the library names.)		(Replace "-4.9.8" with your version of the library. As of the writing of this article, that was the most recent version, and it is now required of the add-on libraries. Presumably, when the API is stable the version number will be dropped from the library names.)

	All other users: My apologies if you use MacOSX, Microsoft Visual Studio, or any other compiler or operating system. I cannot help you with the precise syntax for compilation or configuration.		All other users: My apologies if you use MacOSX, Microsoft Visual Studio, or any other compiler or operating system. I cannot help you with the precise syntax for compilation or configuration.

Allegro Wiki:Site support

Thomas Fjellstrom — Tue, 10 Nov 2009 07:08:55 GMT

protected "[[Allegro Wiki:Site support]]" [edit=sysop] (indefinite) [move=sysop] (indefinite)

New page

Al create bitmap

Thomas Fjellstrom — Tue, 10 Nov 2009 07:08:12 GMT

Undo revision 5136 by PennieRay (Talk) SPAM

← Older revision		Revision as of 07:08, November 10, 2009
Line 49:		Line 49:
	* [[AL_BITMAP\|AL_BITMAP]]		* [[AL_BITMAP\|AL_BITMAP]]
	* [[al_destroy_bitmap\|al_destroy_bitmap]]		* [[al_destroy_bitmap\|al_destroy_bitmap]]
-	* [http://www.rushessay.com/ Custom essay writing]
	* [[al_create_display_bitmap\|al_create_display_bitmap]]		* [[al_create_display_bitmap\|al_create_display_bitmap]]
	* [[al_create_bitmap_2\|al_create_bitmap_2]]		* [[al_create_bitmap_2\|al_create_bitmap_2]]
-

	[[Category:New API]]		[[Category:New API]]

Al create bitmap

PennieRay — Mon, 09 Nov 2009 19:37:36 GMT

Allegro GUI php

Thomas Fjellstrom — Mon, 09 Nov 2009 13:29:52 GMT

← Older revision		Revision as of 13:29, November 9, 2009
Line 6:		Line 6:
	=CODE=		=CODE=

-	<highlightSyntax language="~~php3~~"><?php	+	<highlightSyntax language="php"><?php

	class Dialog {		class Dialog {

Allegro Wiki:Site support

Thomas Fjellstrom — Mon, 09 Nov 2009 12:55:12 GMT

← Older revision		Revision as of 12:55, November 9, 2009
Line 1:		Line 1:
		+	= Sponsors =
		+
		+	Thanks to the following organizations and people that have kindly sponsored the wiki:
		+	-----
		+	<span class="plainlinks">[http://www.nooskewl.com http://nooskewl.com/stuff/images/logo.png]</span>
		+
		+	[http://www.nooskewl.com Nooskewl Software] is an independent game developer with a team spanning several countries. We are currently working on a title that is yet to be announced. Keep an eye out for a new release some time in 2010.
		+
		+	= Donations =
	The wiki is currently in good shape and is not in need of donations. If you feel the overpowering need to support the wiki anyway, start with submitting some new Tutorials, useful code snippets, or help finish or edit existing articles! And if you _still_ have the need to donate something, contact [[User:Thomas Fjellstrom\|Tomasu]] and He'll help you out.		The wiki is currently in good shape and is not in need of donations. If you feel the overpowering need to support the wiki anyway, start with submitting some new Tutorials, useful code snippets, or help finish or edit existing articles! And if you _still_ have the need to donate something, contact [[User:Thomas Fjellstrom\|Tomasu]] and He'll help you out.

MediaWiki:Sitesupport

Thomas Fjellstrom — Mon, 09 Nov 2009 12:40:23 GMT

Created page with 'Site Support'

MediaWiki:Sitesupport-url

Thomas Fjellstrom — Mon, 09 Nov 2009 12:39:47 GMT

Tutorial 2: TrueType Fonts and Display Modes

Mark Oates — Sat, 07 Nov 2009 06:54:49 GMT

removed the note about al_draw_text()'s depreciated argument, and talked about the new argument.

← Older revision		Revision as of 06:54, November 7, 2009
Line 115:		Line 115:

	<highlightSyntax language="c">		<highlightSyntax language="c">
-	al_draw_text(data.f1, 10, 10, -1, "Allegro 5 Rocks!");	+	al_draw_text(data.f1, 10, 10, ALLEGRO_ALIGN_LEFT, "Allegro 5 Rocks!");
-	al_draw_text(data.f2, 10, 60, -1, "Allegro 5 Rocks!");	+	al_draw_text(data.f2, 10, 60, ALLEGRO_ALIGN_LEFT, "Allegro 5 Rocks!");
	</highlightSyntax>		</highlightSyntax>

-	The first argument specifies which font to use, and the second two are the x and y coordinates, respectively. In Allegro 5, the origin is in the upper-left corner of the screen, with x increasing to the right and y increasing down. Thus the coordinates (10, 10) will be a ten pixels offset from the upper-left corner of the screen. The fourth parameter ~~is the string~~ to ~~output, followed finally by~~ the ~~number of characters to print.~~	+	The first argument specifies which font to use, and the second two are the x and y coordinates, respectively. In Allegro 5, the origin is in the upper-left corner of the screen, with x increasing to the right and y increasing down. Thus the coordinates (10, 10) will be a ten pixels offset from the upper-left corner of the screen. The fourth parameter allows you to pass flags telling allegro how to render the text. In this case, we're using the flag ALLEGRO_ALIGN_LEFT, which will left-align the text to the x and y coordinates. By default, allegro will align text to the left (you could pass NULL instead of any flags and it would default to left-align). The last and final argument is the string to output.
-		+
-	~~This last variable is interesting, and might not seem entirely useful at first~~. In this case, we ~~have passed -1~~, which ~~tells Allegro 5~~ to ~~output~~ the ~~entire string~~. ~~Had we set a different value, for example 2~~, it would ~~only output the first two characters; just "Al" would be printed. This is useful if in your game, you want text~~ to ~~slowly appear letter~~-~~by-letter~~. ~~Instead of manupulating your strings~~ to ~~get it to work out, you can just increment this parameter~~.	+

	We are outputting the same string twice so that we can see the difference in defining the font sizes. However, before this text is visible, we must flip the screen and the backbuffer.		We are outputting the same string twice so that we can see the difference in defining the font sizes. However, before this text is visible, we must flip the screen and the backbuffer.

← Older revision		Revision as of 07:08, November 10, 2009
Line 49:		Line 49:
	* [[AL_BITMAP\|AL_BITMAP]]		* [[AL_BITMAP\|AL_BITMAP]]
	* [[al_destroy_bitmap\|al_destroy_bitmap]]		* [[al_destroy_bitmap\|al_destroy_bitmap]]
-	* [http://www.rushessay.com/ Custom essay writing]
	* [[al_create_display_bitmap\|al_create_display_bitmap]]		* [[al_create_display_bitmap\|al_create_display_bitmap]]
	* [[al_create_bitmap_2\|al_create_bitmap_2]]		* [[al_create_bitmap_2\|al_create_bitmap_2]]
-

	[[Category:New API]]		[[Category:New API]]

← Older revision		Revision as of 19:37, November 9, 2009
Line 49:		Line 49:
	* [[AL_BITMAP\|AL_BITMAP]]		* [[AL_BITMAP\|AL_BITMAP]]
	* [[al_destroy_bitmap\|al_destroy_bitmap]]		* [[al_destroy_bitmap\|al_destroy_bitmap]]
		+	* [http://www.rushessay.com/ Custom essay writing]
	* [[al_create_display_bitmap\|al_create_display_bitmap]]		* [[al_create_display_bitmap\|al_create_display_bitmap]]
	* [[al_create_bitmap_2\|al_create_bitmap_2]]		* [[al_create_bitmap_2\|al_create_bitmap_2]]
		+

	[[Category:New API]]		[[Category:New API]]