IsUnitType

From WarCraft3

Template:common.j article series

constant native IsUnitType          takes unit whichUnit, unittype whichUnitType returns boolean

This native checks if the unit whichUnit is of the unittype whichUnitType.

Bugs

The return value is a boolean that behaves slightly different than most other booleans in WC3. Booleans in WC3 are, as in many other programming languages, just integers. A value 0 means false and all other values mean true. However, the function used as boolean expressions behave differently. When a function is used as a boolexpr a return value of 1 means true and everything else is false. Normally this isn't a problem because all WC3 true booleans are 1, except the ones returned by IsUnitType. This means that if you return the value from IsUnitType in a boolexpr function you might get a false value when you really expected a true value. An easy fix to this is to always compare the return value of IsUnitType with true when used in a boolexpr function return.