Rooms have separate exit/enter functions as well as the one for moving in.

satiate.html

@@ -26,6 +26,7 @@
         <a href="https://discord.gg/dSwNN8T">Discord Server</a>
         <p class="version">Version: </p>
         <p><b>This game contains 18+ content</b></p>
+        <p><b>Most of the games have sound!</b></p>
         <p>Select a story:</p>
       </div>
       <div>

stories/demo.js

@@ -15,6 +15,12 @@ stories.push({
       "move": (room, state) => {
         print(["You go back to your living room"]);
       },
+      "enter": (room, state) => {
+        print(["*sound of you entering your house*"]);
+      },
+      "exit": (room, state) => {
+        print(["You are exiting your house"]);
+      },
       "actions": [
         {
           "name": "Squint",

stories/fen-snack.js

@@ -17,10 +17,14 @@ stories.push({
       move: (room, state) => {
         print(["You slide into Fen's humid stomach."]);
       },
+      enter: (room, state) => {
+        playLoop("loop/fen-stomach.ogg");
+      },
+      exit: (room, state) => {
+        stopLoop("loop/fen-stomach.ogg");
+      },
       hooks: [
-        (room, state) => {
-          playLoop("loop/fen-stomach.ogg");
-        }
+
       ]
     }
   }

world.js

@@ -36,6 +36,7 @@ function removeActionDescription() {
 }
 
 function moveToRoom(src, exit, dest, state) {
+  const from = state.world[state.player.location];
   const room = state.world[dest];
 
   if (exit.hooks) {
@@ -54,13 +55,22 @@ function moveToRoom(src, exit, dest, state) {
     }
   }
 
-  state.world[dest].move(state.world[dest], state);
+  if (from && from.exit)
+    from.exit(state.world[dest], state);
+
+  if (room.move)
+    room.move(state.world[dest], state);
+
+  if (room.enter)
+    room.enter(state.world[dest], state);
+
   state.player.location = dest;
 
   refresh();
 }
 
 function goToRoom(dest, state) {
+  const from = state.world[state.player.location];
   const room = state.world[dest];
 
   if (room.hooks) {
@@ -71,17 +81,23 @@ function goToRoom(dest, state) {
     }
   }
 
+  if (from && from.exit)
+    from.exit(state.world[dest], state);
+    
+  if (room.enter)
+    room.enter(state.world[dest], state);
+
   state.player.location = dest;
 
   refresh();
 }
 
 function updateRoom(state) {
-  const name = state.player.location
+  const name = state.player.location;
   const room = state.world[name];
 
-  if (!state.player.rooms[name.id]) {
-    state.player.rooms[name.id] = {};
+  if (!state.player.rooms[room.id]) {
+    state.player.rooms[room.id] = {};
   }
 
   const areaName = document.querySelector("#area-name");