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- Subject: Re: A newbie has problems with Lua
- From: Vegetable <codename_68@...>
- Date: Mon, 14 Aug 2006 05:09:53 -0700 (PDT)
Vegetable wrote:
>
> 1) Sometimes calling my C-function from my lua script, the arguments given
> in my script are 'lost' : i call tex_draw(1,2,3,4) and i receive in my C-
> function (1,None,3,4).
>
I add some info :
the C-function is :
static int tex_draw (lua_State *L)
{
int n = lua_gettop(L); /* number of arguments */
if (n!=4)
{
writeStack(L);
lua_pushstring(L, "mauvais nombre d'arguments passés à 'tex_draw'");
lua_error(L);
}
for (int i=1;i<=4;i++)
if (!lua_isnumber(L, i))
{
writeStack(L);/* does not affect the stack*/
lua_pushstring(L, "argument non numérique donné à 'tex_draw'");
lua_error(L);
}
static_cast<Texture*>(fl->GetData(
lua_tointeger(L,1),TYPE_TEXTURE))
->GetImg()->
Draw(lua_tointeger(L,2),
lua_tointeger(L,3),
lua_tonumber(L,4));
return 0;
}
The error come in
function draw_map()
for i=0,map_size_x-1 do
for j=0,map_size_y-1 do
tex_draw(abs(map[i][j]),(i-x_map)*32,(j-y_map)*32,1)
end
end
end
I have organized my program to show pages, and it draws the map only in page
0.
When i change the page and i come back to the page 0 there is the error.
Adding a print(".") instruction before the tex_draw(...) solves the
problem.....
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