Zombie Have Ears

Initial release

• Zombies (and optionally other monsters) hear players talking in Simple Voice Chat and walk over to investigate the sound.
• Voice loudness is measured for real: louder talking is heard from farther away, quiet speech only up close (hearing config section).
• Whispering (voice chat's whisper key) drastically shrinks the hearing range.
• Walls muffle sound: without direct line of sight, mobs only hear a fraction of the normal range, never aggroing through walls (walls config section).
• Mobs walk to the heard position and search around it for a while before giving up, instead of instantly going idle (searching config section).
• Mobs already chasing a target ignore voices elsewhere.
• Voice sampling and mob alerts run on hard-capped, throttled budgets built for servers with hundreds of concurrent players (performance config section).
• Requires Simple Voice Chat 2.5.0+ on the server. Server-side only — vanilla clients (with Simple Voice Chat installed) can join without this mod.