The legislation which deals with Intoxication is the Criminal Code Act 1913 at Section 28. It provides as follows:
(1) Section 27 applies to the case of a person whose mind is disordered by intoxication or stupefaction caused without intention on his part by drugs or intoxicating liquor, or by any other means.
(2) Section 27 does not apply to the case of a person who has intentionally caused himself to become intoxicated or stupefied, whether in order to afford excuse for the commission of an offence or not.
(3) When an intention to cause a specific result is an element of an offence, intoxication whether complete or partial, and whether intentional or unintentional, may be regarded for the purpose of ascertaining whether such an intention in fact existed.
The legislation in Section 28 refers to the defence of Insanity.