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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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Error: taking address of temporary [-fpermissive]

I've been looking into this for a few hours, to no avail. Basically I have struct rectangle { int x, y, w, h; }; rectangle player::RegionCoordinates() // Region Coord { rectangle temp; temp.x = colRegion.x + coordinates.x; temp.w =…
Jack Riales
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Porting Autodesk Animator Pro to be cross platform

a previous relevant question from me is here Reverse Engineering old paint programs I have set up my base of operations here: http://animatorpro.org wiki coming soon. Okay, so now I have a 300,000 line legacy MSDOS codebase. It's sort of a "be…
Breton
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Linking with -static-libstdc++ flag on MinGW 4.7.1

I try to compile with Allegro 5 on MinGW 4.7.1 using Code::Blocks 12.11 on Windows 7 with these compiler flags (In Project > Linker settings > Other linker settings): -static-libgcc -static-libstdc++ Result: unrecognized command line option…
topright gamedev
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Render a vector graphic (.svg) in C++

My and a friend are working on a 2D game where the graphics will be .svg files and we will scale them appropriately either by rasterizing them first, or rendering them directly on a surface (which still would require rasterization at some…
Brad
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CMake cannot find a static library using relative file paths

I'd like to play around with the Allegro library, but I can't seem to get my test project to link properly. To be exact, I'm getting cannot find -l<...> errors, where <...> is a file I specified using target_link_libraries. (See below for…
vvye
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Allegro 5 crashes on calling al_clear_to_color(ALLEGRO_COLOR)

I'm starting at Allegro 5, but soon I got stuck in the second hello-world-like program I'm coding. After some debugging, I concluded that the program crashes when it calls the function al_clear_to_color(ALLEGRO_COLOR). I've tried linking allegro…
Bruno Garcia
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Error on implicit cast from std:unique_ptr to bool

I am using Allegro to create a simple game. When I try to validate that my pointer to the display is not null I get a compiler error telling me error C2664: 'void validate(bool,std::string)' : cannot convert argument 1 from 'std::unique_ptr<…
janovak
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Fatal error: 'QuickTime/QuickTime.h' file not found

I updated my macOS to Sierra, and some of my files vanished. The most important were Allegro's library. I am trying to install it again like the video (https://www.youtube.com/watch?v=UJtmJfWNTJY) which I saw the first time which I installed, but…
Aipi
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How can I tell if the user tries to close the window in C++?

I need to break a while loop when the use clicks the close button on the window, but I don't know what to check for. I'm using allegro to run the GUI.
John Stimac
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Private static data member in Cpp.. can only be initialized at its definition, yet invalid in-class initialization?

Initializing in the header file i get the following error: invalid in-class initialization of static data member of non-integral type 'bool [8]' if i try to initialize in the .cpp, i get: 'bool Ion::KeyboardInput::key [8]' is a static data member;…
ollo
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How to add allegro Library in Clion and CMake?

I am trying to compile my game project using Clion IDE but I have a problem when porting allegro 5. I get this error: main.cpp:2:10: fatal error: 'allegro/allegro.h' file not found #include My CMakeLists…
NinjaDeveloper
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C++: How do I prevent a function from accepting a pointer that is allocated in-line?

Couldn't figure out how to word the question accurately, so here's an example: Given this function prototype: void Foo(myClass* bar); I want to prevent this usage: Foo(new myClass()); and instead require a previously created object: myClass* bar =…
Casey
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Playing sound file in C with Allegro5

I am trying to play wav file in C with allegro5 and I wrote below code: #include #include #include #include int main(int argc, char **argv){ ALLEGRO_DISPLAY…
Osman Villi
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Allegro5 al_create_display() crash on Mac OS Catalina

I am experiencing the following problem: I am able to compile my allegro application with a make file without errors, however when I run the ./file I get a "zsh: illegal hardware instruction ./file" message. I commented out some parts of the code…
ramkick
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Allegro vs OpenGL speed/efficiency wise

I've been using Allegro 5 for a while now, and recently began looking into OpenGL with Freeglut. I would be ready to make a switch, but I would like to know if it's really worth it. Is OpenGL really much more efficient than Allegro5 for its drawing…
Johnathan
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