If you've been locked in someone's house against your consent, and they refuse to let you out when you directly ask them to unlock a door, is it legal to let them know you will take the keys by force if they don't let you leave, and then take the keys by force if they still refuse to let you out?
(Assume the keys are used to immediately unlock a door and exit the house, then thrown back into the house so that you've only possessed them for the necessary span to use them.)
This by necessity entails physical contact that would be considered assault in most cases (assuming they've kept the keys on their person) and I'm not sure if the threat is direct enough for self defence to apply.
If not, can you:
1. Break windows or doors to escape?
2. Call the police?
3. Call a locksmith?
4. Other options?
(country is Australia, mostly interested in Queensland but opinions for other states could help give an idea of the spread - states sometimes play follow-the-leader on obscure questions too.)