(A) It shall be unlawful for any person to knowingly enter or remain unlawfully in or upon the premises of another. Any of the following acts by any person, firm or corporation shall be deemed included among those that constitute trespass, and appropriate action may be taken to prevent or suppress any violation of this section, including the following acts:
(1) Entry upon the premises, or any part thereof, of another, including any public property in violation of a notice posted or exhibited at such premises, or at any point of approach or entry or in violation of any notice, warning or protest given orally or in writing, by any owner or occupant thereof;
(2) The pursuit of a course of conduct or action incidental to the making of an entry upon the land of another in violation of a notice posted or exhibited at the main entrance to such premises or at any point of approach or entry, or in violation of any notice, warning or protest given orally or in writing by any owner or occupant thereof;
(3) A failure or refusal to depart from the premises of another in case of being requested, either orally or in writing, to leave by any owner or occupant thereof; and
(4) An entry into or upon any vehicle, aircraft or watercraft made without the consent of the person having the right to the possession or control thereof, or a failure or refusal to leave any such vehicle, aircraft or watercraft after being requested to leave by the person having such right.
(B) In any prosecution under this section, it is an affirmative defense that the person reasonably believed that:
(1) The premises involved at the time were open to members of the public and the person complied with all lawful conditions imposed on access to or remaining on the premises; or
(2) The owner of the premises, or other person empowered to license access thereto, would have licensed him or her to enter or remain.