Posts by Pyrrhus

A function which returns specific Attributes of an Object

info = GetObjectInfo(ID, field)
-- name = GetObjectInfo(ID, "name")

in cpp:

void LUA_GetObjectInfo( lua_State *L ) {
    int id = luaL_checkint( L, 1 );
    const char* field = luaL_checkstring(L, 2);
    GameObjDbStructEx* obj = g_ObjectData->GetObj( id );
    if (obj==NULL || strcmp(field, "")==0) {
        lua_pushnil( L );
        return;
    }
    if (strcmp(field, "name")==0) {
        lua_pushstring( L, obj->GetName() );
        return;
    }
    if (strcmp(field, "note")==0) {
        lua_pushstring( L, obj->Note );
        return;
    }
    lua_pushnil( L );
    return;
}

Working with metatables would probably be better but i currently don't know how to implement something like that.

=> Less accesses to GetObj(id) -> better performance (GetObj is O(log(n)) )

=> strcmp not necessarily needed.

=> cleaner API due to Inheritance.

Pro:

• database Addons (charplan, dailynotes, dungeonloots, itempreview, ...) don't need an own database anymore (except maybe an ID-List) -> less memory usage
• faster than using own databases
• no database updates needed
• combined fields possible (e.g. HP/MP/etc.): Addon devs don't have to know the formula

Contra:

• lots of programming work
• current addons obviously don't use that function