add alarm to sound/silence

src/module/powers/soundSilence.js

@@ -16,7 +16,7 @@ export class SoundSilenceEffect extends PowerEffect {
   }
 
   get duration() {
-    return this?.data?.direction === 'Sound' ? 0 : 5;
+    return this?.data?.direction === 'Sound' ? (this.data.alarm === 'none' ? 0 : 6000) : 5;
   }
 
   get isTargeted() {
@@ -71,10 +71,23 @@ export class SoundSilenceEffect extends PowerEffect {
       value: 0,
       epic: false,
     });
+    mods.push({
+      name: 'Alarm (Sound only)',
+      type: 'select',
+      id: 'alarm',
+      epic: false,
+      default: 'none',
+      choices: { none: 'No alarm', object: 'On Object', area: '10 yard area' },
+      effects: { none: null, object: null, area: null },
+      values: { none: 0, object: 1, area: 2 },
+    });
     return mods;
   }
 
   get effectName() {
+    if (this.data.direction === 'Sound' && this.data.alarm !== 'none') {
+      return 'Alarm';
+    }
     let name = `${this.data.raise ? 'major' : 'minor'} ${this.data.direction}`;
     return name;
   }
@@ -84,6 +97,14 @@ export class SoundSilenceEffect extends PowerEffect {
     if (this.data.direction === 'Sound') {
       desc += `<p>Mimic any known sound from a point within ranage. If used as
       a test, resist with Smarts${this.data.greater ? ' -2' : ''}.</p>`;
+      if (this.data.alarm !== 'none') {
+        desc += `<p>A subtle ward is created on
+        ${this.data.alarm === 'object' ? 'an object' : 'an area 10 yards in diameter'}
+        which will sound an alarm (to the caster only or audibly, caster's choice)
+        if the ward is disturbed. This lasts 10 hours. The caster may choose to
+        set a password that, if spoken, will allow the ward to be disturbed by
+        the speaking entity.</p>`;
+      }
     } else if (this.data.targeted) {
       desc += `<p>Silence an individual, causing
       ${this.data.raise ? 'complete silence' : '-4 to auditory Notice rolls'}