Hi. I've been getting some minor performance discrepancies with different scripts so I've been experimenting to try and minimize this. What I've found for value types is this:

-Using this as a base for comparison:

float x = 0;
float y = 0;
float xx = 1;
float yy = 2;
for(int i=0;i<100000;++i)
{
x = xx; //simple assignment test.. this is actually pretty fast for built in value types!
y = yy;
xx = x;
yy = y;
}


3x slower

Vector2 a;
Vector2 b;
for(int i=0;i<100000;++i)
{
a.x = b.x;
b.x = a.x;
a.y = b.y;
b.y = a.y;
}




This is still very fast. Only 2.1 times slower than the base test:

Vector2 a;
Vector2 b;
for(int i=0;i<100000;++i)
{
a = b; //evaluates to a function call.
b = a;
}



8x slower ???

class test
{
Vector2 a;
Vector2 b;
void run()
{
for(int i=0;i<100000;++i)
{
a = b; // a, b are now class members, same speed as if declared global
b = a;
}
}
}



also 8x slower

class V
{
Vector2 v;
}

V a;
V b;
for(int i=0;i<100000;++i)
{
a.v = b.v;
b.v = a.v;
}

Tested these in release using windows performance timers.

Is this expected in terms of speed? -Also wondering if there's any tricks to get class members to be better 'cached' when executing a function within that class? (I use a lot of classes)

Thanks.

Thanks! I will test these properly with the older version when I get the chance.