§15.  Intoxication

The fact of an intoxicated or drugged condition of the offender at the time of the commission of the crime is immaterial, except as follows:

(1)  Where the production of the intoxicated or drugged condition has been involuntary, and the circumstances indicate this condition is the direct cause of the commission of the crime, the offender is exempt from criminal responsibility.  

(2)  Where the circumstances indicate that an intoxicated or drugged condition has precluded the presence of a specific criminal intent or of special knowledge required in a particular crime, this fact constitutes a defense to a prosecution for that crime.