Self-defence laws in South Africa say you can't shoot an intruder unless your life is in danger.

It's day 11 of a trial alleging "Blade Runner" Oscar Pistorius murdered his girlfriend, model Reeva Steenkamp.

A Pretoria court is told Pistorius knew of the gun safety laws.

The state prosecutor described several possible scenarios.

(SOUNDBITE) (English) STATE PROSECUTOR, GERRIE NEL, SAYING:

"Scenario two: The men came to your house and proceed to break off the burglar bars of one of your windows, and enter your house through the window. They go to your lounge and they start to remove your extremely expensive hi-fi. Can you discharge a firearm at them at this point? If you answer 'yes', explain why, if you answer 'no', explain why not. What did he answer?"

(SOUNDBITE) ( English) FIREARM SERVICE PROVIDER, SEAN PATRICK RENS, SAYING (OVER PICTURES OF JUDGE LISTENING):

"Oscar answered no, life is not in danger."

Pistorius' defense lawyer also cro