Lua language question
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- Subject: Lua language question
- From: "Dan East" <dan@...>
- Date: 2004年6月15日 16:57:48 -0400
Hi all. So far so good integrating Lua into my game engine. I'm very
impressed with the results.
I have a language specific question. Take the following C example:
Vector *pVec=&object1.vector;
*pVec=object2.vector;
So that is a slightly roundabout way of saying object1.vector =
object2.vector.
In Lua I have this:
vec=object1.vector
In my environment that is equivalent to Vector *pVec=&object1.vector. Any
changes made to vec apply to object1.vector. My question is how best
syntactically to set vec's values to that of another vector?
This will not work:
vec=object1.vector
vec2=object2.vector
vec=vec2
vec just references the same thing as vec2.
Currently I have to do this:
vec=object1.vector
vec2=object2.vector
vec.x=vec2.x
vec.y=vec2.y
vec.z=vec2.z
I could of course simply expose a function like set(), allowing something
like this:
vec.set(vec2)
However I wanted something more in the spirit of the Lua language, which
is something I'm only superficially familiar with so far (I'm more familiar
with the stack-based API side than the actual Lua language :).
Suggestions are certainly appreciated!
Dan East