constructor trouble with private member from another class

[Skyver]

thanks alot i also see how hitdetection gets his stuff passed in. the default constructor im having a little trouble to understand how to utilize it but it works for now thanks again il find it out

[albinopapa]

A default constructor just makes it so you can create an object without having to pass in parameters.

Goal goal; <- calls default constructor

goal = Goal(); <- calls default constructor and copies default constructed Goal to an already constructed Goal object.

If you changed the Goal() = default; to actually do something like randomly select it's own position, you could do something like:

Code: Select all

// Goal.h
class Goal
{
   Goal();
};

// Goal.cpp
#include <random>
Goal::Goal()
{
   std::mt19937 rng( std::random_device{} );
   std::uniform_int_distribution<int> xdist( 0, Graphics::ScreenWidth  - GoalWH );
   std::uniform_int_distribution<int> ydist( 0, Graphics::ScreenHeight - GoalWH );
   PointX = xdist( rng );
   PointY = ydist( rng );
}

// Game.pp
Game::UpdateModel()
{
   // If player reaches goal, reset to new location by assigning default constructed value to 
   // already constructed value, all values will be reset to defaults.
   if( goal.HitDetection( P0 ) )
   {
      goal = Goal();
   }
}