code optimization question

closed account (zwA4jE8b)
Using my game as an example again...

Is passing a variable such as HDC everytime a common function is called or creating a variable in the class and only initializing it once better?

I know in this simple game it will not make a performance difference, I just want to know for when I move to more complex projects.


The current version...
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//Snake Engine header
#ifndef H_snakengine
#define H_snakengine

class snake
{
	int _length, _counter, _tocount, i;
	RECT _old;
	std::vector<RECT> _segments;
	char _ret;
	
public:
	char _direction;
	snake(int);
	void snake_init();
	void snake_head(const HDC&);
	void snake_nextpos();
	void snake_animate(const HDC&);
	void snake_dead(const HDC&)
	void snake_addseg();
	char snake_collisions();
};
#endif



or something like this...
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//Snake Engine header
#ifndef H_snakengine
#define H_snakengine

class snake
{
	int _length, _counter, _tocount, i;
	RECT _old;
	std::vector<RECT> _segments;
	char _ret;
        HDC hDC;
	

public:
	char _direction;
	snake(int, const HDC);
	void snake_init();
	void snake_head();
	void snake_nextpos();
	void snake_animate();
	void snake_dead()
	void snake_addseg();
	char snake_collisions();
};
#endif
closed account (zb0S216C)
It won't make a difference. Either way, you're referring to one HDC object in both examples.

Wazzak
closed account (zwA4jE8b)
oh ok. thank you. Ill just leave it as is then.
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