[adonys]

inheritance should only work in different scripts.

base MG script

public override void OnBattleStarted() {
    code1
}

main mission

public override void OnBattleStarted() {
    base.OnBattleStarted();
    code2
}

secondary loaded mission

public override void OnBattleStarted() {
    base.OnBattleStarted();
    code3
}

Theoretically, after loading the secondary mission and its cs file, calling the OnBattleStarted() function should execute code1, then code2, then code3