MPUZ: Null Object

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The Null Object is a special object in MPUZ's runtime engine. It never participates during gameplay, has no onscreen object, its events are normally never run, and it contains no useful information. However, it finds use as an error handler and a source of an object reference in cases where a valid reference would not be produced.

There are actually two kinds of Null Object: created Null Objects and the Null Object at sysid 0. Null Objects are created when some error happens during an attempt to load or create another object. In these cases, the Null Object outputs an error message to the error log and immediately destroys itself.

Null Objects have all of their numeric variables set to 0 (except created Null Objects, which have their own sysid), and all of their string variables are empty except for objid, which contains "MP_Null". The Null Object at sysid 0 is not counted in object counts or in any other instances that deal with objects, but other Null Objects are.