By default, attributes whose value is equal to the default value will not be written to the mission.sqm. However, once the value of the attribute was changed and saved and then reset to its default value. The attribute code remains in the mission.sqm and is executed when the mission is started.
This causes unnecessary code to be executed at mission start and increasing the mission.sqm size
class Mission
{
class Intel
{
//....
};
class Entities
{
items=1;
class Item0
{
dataType="Group";
side="West";
class Entities
{
items=1;
class Item0
{
dataType="Object";
class PositionInfo
{
position[]={3987.0815,5.0014391,4180.2354};
};
side="West";
flags=7;
class Attributes
{
isPlayer=1;
};
id=9;
type="B_W_Crew_F";
};
};
class Attributes
{
};
id=8;
};
};
};class Attribute2
{
property="enableStamina";
expression="_this enablestamina _value;";
class Value
{
class data
{
class type
{
type[]=
{
"BOOL"
};
};
value=0;
};
};
};For custom attributes, this means that every attribute expression needs an additional check if the _value passed to it is different from the default value.
if !(_value # 0 isEqualTo '') then //...