feat: Add INACTIVE condition for enchantments (#5962)

* Add INACTIVE condition

Maybe it'll be useful someday

* Update docs

doc/src/content/docs/en/mod/json/reference/creatures/magic.md

@@ -380,6 +380,7 @@ Values:
 - `DAWN` - When it is dawn
 - `ACTIVE` - whenever the item, mutation, bionic, or whatever the enchantment is attached to is
   active.
+- `INACTIVE` - the opposite of `ACTIVE`
 
 ### emitter
 

src/magic_enchantment.cpp

@@ -67,6 +67,7 @@ namespace io
         case enchantment::condition::DUSK: return "DUSK";
         case enchantment::condition::DAWN: return "DAWN";
         case enchantment::condition::ACTIVE: return "ACTIVE";
+        case enchantment::condition::INACTIVE: return "INACTIVE";
         case enchantment::condition::NUM_CONDITION: break;
         }
         debugmsg( "Invalid enchantment::condition" );
@@ -190,6 +191,10 @@ bool enchantment::is_active( const Character &guy, const bool active ) const
         return active;
     }
 
+    if( active_conditions.second == condition::INACTIVE ) {
+        return !active;
+    }
+
     if( active_conditions.second == condition::ALWAYS ) {
         return true;
     }

src/magic_enchantment.h

@@ -90,6 +90,7 @@ class enchantment
             DUSK,
             DAWN,
             ACTIVE, // the item, mutation, etc. is active
+            INACTIVE,
             NUM_CONDITION
         };