CODEWITHSUNDEEP
c++inheritance
patrixok
patrixok

Reputation: 1

Read variable from other class

i have 2 classes Player and Bullet.

I need to read one variable in Bullet class from Player class. Problem is that when i copy variable it shows only value that was initiated when Player was created and not updating when Player is moving. How can i get access to live variable?

When i cout getPosition from Player class it shows live position, when i cout from Bullet class it shows only value that was initiated when Player was created.

Player:

Vector2f Player::PlayerPosition()
{
    return shape.getPosition();
}

Bullet:

#include "Bullet.h"
#include "Player.h"
 Player a;

Vector2f Bullet::getPlayerPosition()
{
    return a.PlayerPosition();
}

Upvotes: 0

Views: 55

Answers (1)

blindcrone
blindcrone

Reputation: 71

You're declaring a global Player instance a before the definition of the function Bullet::getPlayerPosition, which means that within the scope of that function, the name a is referring to that global instance, which may not be the one you're changing elsewhere. In general, if you'd like some variable to be in a function's scope, the best way is usually to pass the variable as a parameter to the function.

So, for example, I think what you want could look something like:

#include "Bullet.h"
#include "Player.h"
Vector2f Bullet::getPlayerPosition(const Player& a)
{
    return a.PlayerPosition();
}

Upvotes: 2

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