i tried to use aurora lib just to understand it. however when i compiled the example in its official site i got errors. i don't know why this happened.
the code in official site:
#include <Aurora/Dispatch.hpp>
#include <iostream>
struct Object { virtual ~Object() {} };
struct Asteroid : Object {};
struct Ship : Object {};
void collisionAA(Asteroid*, Asteroid*) { std::cout << "Asteroid-Asteroid\n"; }
void collisionAS(Asteroid*, Ship*) { std::cout << "Asteroid-Ship\n"; }
void collisionSS(Ship*, Ship*) { std::cout << "Ship-Ship\n"; }
int main()
{
// Register "overloaded" functions
using aurora::Type;
aurora::DoubleDispatcher<Object*> disp;
disp.bind(Type<Asteroid>(), Type<Asteroid>(), &collisionAA);
disp.bind(Type<Asteroid>(), Type<Ship>(), &collisionAS);
disp.bind(Type<Ship>(), Type<Ship>(), &collisionSS);
// Call function, given only base class pointers
Asteroid a;
Object* pa = &a;
Ship s;
Object* ps = &s;
disp.call(pa, ps); // Output: Asteroid-Ship
std::cin.ignore();
}
errors appear like this:
1>------ Build started: Project: junk_input, Configuration: Debug Win32 ------
1> Source1.cpp
1>c:\program files (x86)\microsoft visual studio 12.0\vc\include\aurora\meta\templates.hpp(141): error C2027: use of undefined type 'aurora::detail::FunctionSignature<Signature>'
1> with
1> [
1> Signature=Object *
1> ]
1> c:\program files (x86)\microsoft visual studio 12.0\vc\include\aurora\dispatch\doubledispatcher.hpp(126) : see reference to class template instantiation 'aurora::FunctionResult<Signature>' being compiled
1> with
1> [
1> Signature=Object *
1> ]
1> c:\users\mohammed\documents\sfml-working\junk_input\junk_input\source1.cpp(17) : see reference to class template instantiation 'aurora::DoubleDispatcher<Object *,aurora::RttiDispatchTraits<Signature,2>>' being compiled
1> with
1> [
1> Signature=Object *
1> ]
1>c:\program files (x86)\microsoft visual studio 12.0\vc\include\aurora\meta\templates.hpp(141): error C2146: syntax error : missing ';' before identifier 'Type'
1>c:\program files (x86)\microsoft visual studio 12.0\vc\include\aurora\meta\templates.hpp(141): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>c:\program files (x86)\microsoft visual studio 12.0\vc\include\aurora\meta\templates.hpp(141): error C2208: 'aurora::Type' : no members defined using this type
1>c:\program files (x86)\microsoft visual studio 12.0\vc\include\aurora\meta\templates.hpp(141): fatal error C1903: unable to recover from previous error(s); stopping compilation
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
i'm using VS 2013. how to solve those errors?
This API has changed in the meantime, I just forgot to update the examples :)
Should be good now! (http://www.bromeon.ch/libraries/aurora/index.html)
#include <Aurora/Dispatch.hpp>
#include <iostream>
struct Object { virtual ~Object() {} };
struct Asteroid : Object {};
struct Ship : Object {};
void collisionAA(Asteroid*, Asteroid*) { std::cout << "Asteroid-Asteroid\n"; }
void collisionAS(Asteroid*, Ship*) { std::cout << "Asteroid-Ship\n"; }
void collisionSS(Ship*, Ship*) { std::cout << "Ship-Ship\n"; }
int main(){
// Register "overloaded" functions
using aurora::Type;
aurora::DoubleDispatcher<void(Object*, Object*)> disp;
disp.bind(Type<Asteroid>(), Type<Asteroid>(), &collisionAA);
disp.bind(Type<Asteroid>(), Type<Ship>(), &collisionAS);
disp.bind(Type<Ship>(), Type<Ship>(), &collisionSS);
// Call function, given only base class pointers
Asteroid a; Object* pa = &a;
Ship s; Object* ps = &s;
disp.call(pa, ps); // Output: Asteroid-Ship
}