cansee()

cansee(<viewer>, <target>)
chkreality(<viewer>, <target>)

cansee() returns 1 when <viewer> receives a layer <target> transmits, or both are the same object, else 0. It compares the layers only, whether or not reality is enabled.

chkreality() returns 1 when <viewer> perceives <target> under @reality as it stands: always, while reality is disabled.

Neither checks DARK, locks or where the two are. You must control both objects. A dbref is taken as it stands, so you can ask about objects you cannot perceive.

> think cansee(%#,#10) cansee(#10,%#)
0 1

Output: #10 transmits only ghost, which you do not receive, while it receives your normal.

::: seealso

rxlevel()
@reality perception rules :::