ActionCanChangeLevel

// ShockPlayer
function bool IsCriticalLogPlaying()
{
    // Returns true if a radio message is playing
}

// ShockPlayerController
function bool IsLevelSwitchingEnabled()
{
    return !LevelSwitchingDisabled && !ShockPlayer(Pawn).IsCriticalLogPlaying();
}

// ActionCanChangeLevel
function @NULL execute()
{
    local protected bool CanChangeLevelsNow;
    CanChangeLevelsNow = ShockPlayerController(parentScript.Level.GetLocalPlayerController()).IsLevelSwitchingEnabled();
    return newTemporaryVariable(class'VariableBool', string(CanChangeLevelsNow));
}