code/__DEFINES/sight.dm 
| INVISIBILITY_HIGH | Only observers can see this |
|---|---|
| SEE_INVISIBLE_OBSERVER_NO_OBSERVERS | Observer's vision without ghost vision |
| INVISIBILITY_OBSERVER | Observer's invisibility |
| SEE_INVISIBLE_OBSERVER | Observer's vision with ghost vision |
Define Details
INVISIBILITY_HIGH 
Only observers can see this
INVISIBILITY_OBSERVER 
Observer's invisibility
SEE_INVISIBLE_OBSERVER 
Observer's vision with ghost vision
SEE_INVISIBLE_OBSERVER_NO_OBSERVERS 
Observer's vision without ghost vision