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Questions tagged [allegro]

Allegro is a low-level game programming library distributed freely, supporting desktop and mobile platforms. It is coded in C and offers several language bindings.

The latest stable version is 5.0. It is completely rewritten with a new API and full hardware accelerated graphics via OpenGL or D3D. There is official support for Windows, OS X, Linux, and iOS. There is also an unstable branch 5.1.

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383 questions
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Allegro 5 - creating a custom bitmap with alpha channel

Afternoon everyone, I was wondering if there's any way I could create a custom bitmap with alpha channel bitmap = al_create_bitmap(30,…
Wracker
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How to check if memory has aready been released in Destructor?

I have a simple tank wars style game using the allegro open source library. In my tank class, I initialize arrays of pointers to bitmap objects to 0. Then I create new objects with an allegro function create_bitmap which allocates the memory and…
CodeFusionMobile
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Which is better? Starting to Allegro or OpenGL

I want you to help me for a decision problem. I am a newbie video game programmer. I can develop Flash, Unity, Android games, and I know a little CryEngine. Also, I want to develop 3D video games in the future. So, I decided to learn a video game…
ciyo
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failure of al_draw_line() in ALLEGRO

When I want to draw a line by using al_draw_line(100,100,400,400,al_map_rgb(255,255,0),5);, my ALLEGRO_DISPLAY gets closed automatically and statements after this line does not execute. My program just…
Vishal Gaur
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Archiving allegro program in xcode

I have been trying to get my game working as an archived application in xcode, but I cannot get it to run at all. The game runs in the normal run and profile mode, just not after it is archived. I am getting the following error message, which…
user722303
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Compile Allegro 5.0.8 - static link (Code::Blocks 12.11, MinGW 4.7.1, Windows 7)

After installing Code::Blocks 12.11 (with MinGW 4.7.1 in distributive) on Windows 7 I try to compile simple Allegro 5 example. The only (official?) tutorial (a bit old) about…
topright gamedev
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allegro 5.1.3 and microsoft visual studio 2010 for android?

Ive set up allegro and msv2010 on my laptop and ive set up android dev with msvc2010. However I cant figure out how to set up a project for the new allegro android dev. i have set up the and android sdk, java jdk, ndk and all the…
AlanF
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Is this too specific to refactor with loops?

Is the code in this function too specific to refactor with loops? There's no algorithm that I can think of that would accurately reproduce the required result. bool Mouse::CreateDefaultImage() { if(_defaultImage != nullptr) return false; …
Casey
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How do I call a C-function with a Functor that expects a pointer to a void function in C++?

I'd like to wrap (Facade Pattern) Allegro's use of threads i.e. install_int_ex(void (__cdecl*)(void), int tick); and remove_int(void (__cdecl*)(void)) with a class I wrote that uses templates and user-defined Functor Objects to install interrupts…
Casey
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Loading .png Image file with Allegro 5

I am writing a game in allegro and would like to load some image files. However, whenever I call al_load_bitmap, I am getting a null pointer. I am using XCode 4.1 as my IDE. I would try compiling using g++ (in case it is a path issue) however I…
user1413793
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An Array of ALLEGRO_BITMAP type objects

So I'm making a game using Allegro and I was trying to create an array of ALLEGRO_BITMAP type objects which would represent the board, so that I could load my images files all at once in the beginning of the game and not have to load them every time…
user1413793
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Animating an array of child class objects

I am trying to create a parent class "Shape" with child classes "Circle", "Triangle", "Rectangle". The parent class holds the x pos, y pos, and fill color or all the "shapes" and then each child class holds info specific to that shape. Would anyone…
AGSperry
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Creating a cursor in Allegro?

I'm writing a basic game. I want a cursor image with an actual proper outline for collision detection. This is NOT for the mouse-- I want little cursors flying around in my game, and I don't want their bounding box to be a rectangle. But I'm new to…
temporary_user_name
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Allegro Webactions not serving on SBCL. Methods to debug or possible solutions?

I am trying to get Portable Allegro Serve and Webactions up and running on SBCL. I have so far managed to make paserve properly serve pages. But webactions chunks out with the following warning in the console: 1-aserve-worker: 05/27/09 - 21:28:43 -…
memet
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libfov problems in C++ game

I've been making a game in which I want to use some FOV lighting. I'm trying out libfov and it seems perfect, I had some trouble getting it to compile which I figured out on my own, but when I try to run the compiled executable I get this in the…
archiboldian
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