I was wondering why do I need to pass the x component to the vec_set function to set the three components (XyZ)

vec_set(my.x,your.x);

I Just need to know how does the function extract the y and Z components of the vector from the x component only

may be my Question is very trivial for most of you, but I'm coming from a cpp background and we don't deal with vectors that way

vec_set expects a VECTOR. A VECTOR is three vars in a row.

my.x is not actually a vector, since my is an entity, but within that entity is stored x, y, z in the same order as in a VECTOR. When you say:

vec_set(my.x, your.x);

Lite-C actually knows that this function expects a place in memory (in the manual, the paramaters are VECTOR*, not just VECTOR), so it passes the memory address of my.x, and the function, thinking it has the memory position of a VECTOR, sets each component appropriately.

I hope that makes sense. I'm unwell at the moment.

Jibb

it´s just the indicator for using the position vectors of the entities here
if you use f.i. .pan instead of .x then it would mean that you want to work with the euler angles.

EDIT: the mighty Julz was faster-.-

c++ vectors and gamestudio vectors are completely diffrent things, vector is a simple struct consisting from x,y and z variables.

Thanks a lot julz for your excellent explanation, which helped me understand how Litec operates from under the hood.