libs/poly_collection/example/basic_base.cpp
/* Copyright 2016-2017 Joaquin M Lopez Munoz.
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*
* See http://www.boost.org/libs/poly_collection for library home page.
*/
/* basic usage of boost::base_collection */
#include <algorithm>
#include <boost/poly_collection/base_collection.hpp>
#include <random>
#include "rolegame.hpp"
int main()
{
//[basic_base_1
//= #include <boost/poly_collection/base_collection.hpp>
//= ...
//=
boost::base_collection<sprite> c;
std::mt19937 gen{92748}; // some arbitrary random seed
std::discrete_distribution<> rnd{{1,1,1}};
for(int i=0;i<8;++i){ // assign each type with 1/3 probability
switch(rnd(gen)){
case 0: c.insert(warrior{i});break;
case 1: c.insert(juggernaut{i});break;
case 2: c.insert(goblin{i});break;
}
}
//]
auto render=[&](){
//[basic_base_2
const char* comma="";
for(const sprite& s:c){
std::cout<<comma;
s.render(std::cout);
comma=",";
}
std::cout<<"\n";
//]
};
render();
//[basic_base_3
c.insert(goblin{8});
//]
render();
//[basic_base_4
// find element with id==7 and remove it
auto it=std::find_if(c.begin(),c.end(),[](const sprite& s){return s.id==7;});
c.erase(it);
//]
render();
}