CPlusPlusProjectTemplate/main.cpp

#define OLC_PGE_APPLICATION
#include "pixelGameEngine.h"
#include <memory>
using namespace olc;

struct myStruct{
	std::string name="";
	int level=1;
};
std::vector<std::weak_ptr<myStruct>> vals;

void AddVal(std::weak_ptr<myStruct>newVal) {
	auto findVal=std::find_if(vals.begin(),vals.end(),
		[&newVal](std::weak_ptr<myStruct>&val)
			{
				return val.lock()->name==newVal.lock()->name;
			}
		);
	if (findVal!=vals.end()) {
		std::cout<<"Value "<<newVal.lock()->name<<" already exists."<<std::endl;
		findVal->lock()->level++;
		std::cout<<findVal->lock()->name+" is now level "<<findVal->lock()->level<<std::endl;
	} else {
		std::cout<<"Value "<<newVal.lock()->name<<" does not exist."<<std::endl;
		vals.push_back(newVal);
		std::cout<<newVal.lock()->name+" is now level "<<vals[vals.size()-1].lock()->level<<std::endl;
	}
}

int main() {
	std::shared_ptr<myStruct> myPtr1=std::make_shared<myStruct>();
	std::shared_ptr<myStruct> myPtr2=std::make_shared<myStruct>();
	std::shared_ptr<myStruct> myPtr3=std::make_shared<myStruct>();
	std::shared_ptr<myStruct> myPtr4=std::make_shared<myStruct>();

	std::weak_ptr<myStruct> refPtr1=myPtr1;
	std::weak_ptr<myStruct> refPtr2=myPtr2;
	std::weak_ptr<myStruct> refPtr3=myPtr3;
	std::weak_ptr<myStruct> refPtr4=myPtr2;

	refPtr1.lock()->name="Test Upgrade 1";
	refPtr2.lock()->name="Test Upgrade 2";
	refPtr3.lock()->name="Test Upgrade 3";

	std::cout<<(refPtr2.lock()==refPtr4.lock())<<std::endl;

	AddVal(refPtr1);
	AddVal(refPtr2);
	AddVal(refPtr3);
	AddVal(refPtr4);
}