class Variable

The Variable class stores a system variable.

class Variable : public MapElement<Variable>, public Observable<Variable>

Variable::GetVariableName	Returns the variable name.
Variable::GetVariableFlags	Returns the variable flags.
Variable::SetVariableFlags	Returns the variable flags.
Variable::GetValue	Returns the variable value as a string.
Variable::SetValue	Sets the variable value as a string.
Variable::GetIntegerValue	Returns the variable value as an integer.
Variable::SetIntegerValue	Sets the variable value as an integer.
Variable::GetFloatValue	Returns the variable value as a floating-point number.
Variable::SetFloatValue	Returns the variable value as a floating-point number.

explicit Variable(const char *name, uint32 flags = 0,

Variable::ObserverType *observer = nullptr);

name	A pointer to the name of the variable.
flags	The variable flags. See below for possible values.
observer	An observer that is invoked when the variable is modified.

The Variable class encapsulates the name and value of a system variable. The value of a system variable is a text string containing up to kMaxVariableValueLength characters. The initial value of a variable upon construction is the empty string.

The flags parameter specifies a set of flags that control properties of the variable. The flags can be a combination (through logical OR) of the following constants.

kVariableNonpersistent	The variable should not be saved across different executions of the engine.
kVariablePermanent	The variable cannot be deleted by the user.

If the observer parameter is specified, then it provides an observer function that is called each time the variable's value is modified through one of the member functions that set the value.

Once a variable has been created, it can be registered with the engine by calling the Engine::AddVariable function. A variable is unregistered by simply destroying it.

MapElement<Variable>	Used internally to store all variables in a map.
Observable<Variable>	Observers can be invoked when the variable is modified.

Engine::AddVariable

Engine::GetVariable

Engine::GetFirstVariable