1 files changed, 38 insertions, 10 deletions

diff --git a/internal/game/cmd_room.go b/internal/game/cmd_room.go
index b381cf3..33627eb 100644
--- a/internal/game/cmd_room.go
+++ b/internal/game/cmd_room.go
@@ -83,7 +83,7 @@ func (g *Game) roomSetName(sess *net.Session, args []string) {
 		return
 	}
 	text := strings.Join(args, " ")
-	g.writeRoom(sess, func(room *world.Room) {
+	g.mutateRoom(sess, func(room *world.Room) {
 		room.Name = text
 	})
 	sess.WriteLine(fmt.Sprintf("Room name set to: %s", text))
@@ -94,10 +94,29 @@ func (g *Game) roomSetDesc(sess *net.Session, args []string) {
 		sess.WriteLine("Usage: room desc <text>")
 		return
 	}
+	room, _, err := g.loadRoomWrite(sess.Player)
+	if err != nil {
+		sess.WriteLine(fmt.Sprintf("Error loading room: %v", err))
+		return
+	}
+	// Replacing the list wholesale would destroy alternates; require a direct
+	// YAML edit when the room already has conditional or multiple variants.
+	if len(room.Description) > 1 {
+		sess.WriteLine("This room has multiple or conditional descriptions; edit the room YAML directly to keep them.")
+		return
+	}
+	for _, v := range room.Description {
+		if v.Condition != nil {
+			sess.WriteLine("This room has conditional descriptions; edit the room YAML directly to keep them.")
+			return
+		}
+	}
 	text := strings.Join(args, " ")
-	g.writeRoom(sess, func(room *world.Room) {
+	if !g.mutateRoom(sess, func(room *world.Room) {
 		room.Description = behavior.DescList{{Text: text}}
-	})
+	}) {
+		return
+	}
 	sess.WriteLine("Room description updated.")
 }
 
@@ -121,7 +140,7 @@ func (g *Game) roomSetColor(sess *net.Session, args []string) {
 			return
 		}
 	}
-	g.writeRoom(sess, func(room *world.Room) {
+	g.mutateRoom(sess, func(room *world.Room) {
 		room.Color = value
 	})
 	if value == "" {
@@ -176,21 +195,30 @@ func parseLocalObjArgs(rawInput, action string) (name string, aliases []string,
 	return name, nil, desc
 }
 
-func (g *Game) writeRoom(sess *net.Session, fn func(*world.Room)) {
+// mutateRoom loads the player's current room, applies fn, writes it back, and
+// reconciles the live runtime state from the new file. Every successful
+// in-game room edit must go through it: a plain file write left the live room
+// unchanged (a removed mob kept standing, an added spawn never appeared) until
+// the next room entry or restart.
+//
+// It runs on the owner goroutine and returns false after reporting an error.
+func (g *Game) mutateRoom(sess *net.Session, fn func(*world.Room)) bool {
 	p := sess.Player
 	room, path, err := g.loadRoomWrite(p)
 	if err != nil {
 		sess.WriteLine(fmt.Sprintf("Error loading room: %v", err))
-		return
+		return false
 	}
 	fn(room)
 	data, err := yaml.Marshal(room)
 	if err != nil {
-		sess.WriteLine("Error marshaling room YAML.")
-		return
+		sess.WriteLine(fmt.Sprintf("Error marshaling room YAML: %v", err))
+		return false
 	}
 	if err := writeRoomFile(path, data); err != nil {
-		sess.WriteLine("Error writing room file.")
-		return
+		sess.WriteLine(fmt.Sprintf("Error writing room file: %v", err))
+		return false
 	}
+	g.ReconcileRoom(p.RoomID)
+	return true
 }