====== IdentifySourcePort ======
{{tag>info needs_examples}}
''int IdentifySourcePort()''

===== Description =====
Identifies the port the mod is being played in.

Returns one of the following constants:
  * ''PORT_ZDOOM''
  * ''PORT_GZDOOM''
  * ''PORT_ZANDRONUM''

===== Inner workings =====

The function performs the following checks:
  - If ''[[zan>GetPlayerAccountName]](0)'' returns a non-zero result (even an empty string), it is implemented and the port is assumed to be Zandronum.
  - If a ''[[zdoom>Classes:DynamicLight|DynamicLight]]'' actor can be spawned, the port is assumed to be GZDoom.
  - Otherwise it's ZDoom.