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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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Allegro5 with C - making program

I'm making program using Allegro5, but I'm not familiar with the library yet. I just want to know what is possible with this library. I have to do 'color correction of image' (contrast, brightness, etc.) and I thought about: -making buttons (like in…
sobol6803
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Allegro DrawSprite() wont function correctly C++

Simple x's and O's game. If 1-9 keys are pressed, draw an X or an O at the right place on the board: 7|8|9 4|5|6 1|2|3 The code is below, the changePlayer() function just changes the player (not included) and i use board[0] to hold which player it…
JamesB123
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Allegro 5 + MinGW: Audio Addon Not Working

I've been working on this platforming Allegro 5 test that I'm later going to turn into a game. Every one of Allegro's add-ons has worked great up until now, when I tried to use the audio to play an .ogg file I made in Audacity. I'm using the MinGW…
Neil Flodin
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Timing problems in Allegro while implementing Pong

I'm trying to implement a very basic version of Pong using Allegro 4 and C++. I'm running into a problem however when I use the timing mechanism in conjunction with a rest() call. My game is set up for 2 players and a player wins a set once the…
theSuperiorVenacava
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Output program in C++ is all white for no apparent reason

The above is a problem I am having. I am using Visual Studio 2010, in C++, with the Allegro library for game development. I'm having an issue where my test program is always all-white, until I hit a button, in some cases. I don't really understand…
user1426572
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c Allegro ISO error Using & and integers yet not working

I am making an allegro game using my own logic and primitive engine. Im a trying to make gravity and contact with tiles from an array. To be able to change values of a class from another class, i had to use the reference symbol '&'. After compiling…
William Chantrill Paul
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C++, Allegro, Ubuntu, and libpng/LoadPNG

I've been looking around for quite a while, but I haven't quite been able to hit on a source answering my question. I want to use PNGs with Allegro. I know about libpng and loadpng for Allegro, but I don't know what to do with these. Obviously, I'm…
Ben Dixon
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issue with screen resolution after running an allegro program in full screen

My allegro program runs fine in full screen mode, but after I exit the program, my desktop screen resolution is messed up. I was under the impression that running allegro_exit(); would revert the screen resolution back to what it originally was. I…
user1477782
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Can Allegro update the number of joysticks at runtime?

Is there a way to update the number of joysticks plugged in at run-time other than constantly calling remove_joystick() then install_joystick? This proves to be extremely slow (goes from 60 FPS to around 5). Allegro 4.2 answers only please... void…
Casey
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Allegro, sprites leaving trail

I'm getting the problem my sprites leave a trail behind when i move them. Tried drawning a BG with every refresh but then it start flickering. This is what i do // ... int main(int argc, char *argv[]) { BITMAP *buffer = NULL; BITMAP…
Crasher
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How to load a bmp without background

So, I was trying to make game in allegro but I'm currently stuck with this damn blank background which is making me very mad, as I know PNG images have transparency in the background already, but I can't load pngs, i have already download devpaks,…
Guilherme Garcia da Rosa
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How do Allegro timers count time?

const float FPS = 60; timer = al_create_timer(1.0 / FPS); Apparently, those two lines start a timer that goes off 60 times per second. I don't understand that. 1/FPS gives 1/60, and docs say the parameter of al_create_timer is the number of seconds…
temporary_user_name
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Adding run-time dependencies for Allegro addons?

I'm trying to use some of the Allegro addon libraries. For instance: #include But MSVS10 is telling me the things I'm referencing are undefined. I got the standard #include to work just fine,…
temporary_user_name
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Allegro library installation

I was using Dev C++ Compiler and due to some problems this compiler is not running properly on my PC,and for that i am unable to install Allegro 4.9 Library with my Dev C++ compiler. I am now using netbeans compiler for my c++ programming but unable…
Youmair
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Possible to declare elements of a function array individually?

So, a quick summary of why I'm trying to do this: I'm making a space flight program, wherein (once I code in more than one ship) I will be able to store different ships, e.g. craft[HAB], craft[AYSE], craft[ISS], and so forth. At the moment, I have…
pmelanson
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