feat: better card ascii art

1 files changed, 25 insertions, 0 deletions

diff --git a/internal/world/mob.go b/internal/world/mob.go
index afd9024..4441108 100644
--- a/internal/world/mob.go
+++ b/internal/world/mob.go
@@ -747,7 +747,14 @@ func (s *MobStore) RekeyRooms(idMap map[int]int) {
 	}
 	s.mu.Lock()
 	defer s.mu.Unlock()
+	// A seeded instance's key embeds its home room (SeedMobs builds
+	// "<def>_<room>_<i>"). Leaving the old key in place would make SeedMobs
+	// create a duplicate instance for the renamed room and would let a
+	// recycled ID skip seeding entirely, so the map is rebuilt with the
+	// rewritten keys.
+	rekeyed := make(map[string]*MobInstance, len(s.instances))
 	for _, inst := range s.instances {
+		oldHome := inst.HomeRoomID
 		if newID, ok := idMap[inst.RoomID]; ok && newID != inst.RoomID {
 			inst.RoomID = newID
 		}
@@ -764,5 +771,23 @@ func (s *MobStore) RekeyRooms(idMap map[int]int) {
 				inst.DespawnRooms[i] = newID
 			}
 		}
+		if inst.HomeRoomID != oldHome {
+			inst.InstanceID = rekeySeededInstanceID(inst.InstanceID, inst.DefID, oldHome, inst.HomeRoomID)
+		}
+		rekeyed[inst.InstanceID] = inst
+	}
+	s.instances = rekeyed
+}
+
+// rekeySeededInstanceID rewrites the room component of a seeded instance ID
+// ("<def>_<oldRoom>_<suffix>"). IDs that do not match the seeded shape (a
+// transient or test instance) are returned unchanged. The DefID prefix is
+// stripped by string match rather than parsed because a mob def ID may itself
+// contain underscores.
+func rekeySeededInstanceID(instanceID, defID string, oldRoom, newRoom int) string {
+	prefix := fmt.Sprintf("%s_%d_", defID, oldRoom)
+	if !strings.HasPrefix(instanceID, prefix) {
+		return instanceID
 	}
+	return fmt.Sprintf("%s_%d_%s", defID, newRoom, strings.TrimPrefix(instanceID, prefix))
 }