room unloading works now

4 files changed, 28 insertions, 1 deletions

diff --git a/src/componentwrapper.rs b/src/componentwrapper.rs
index 589da15..42eccff 100644
--- a/src/componentwrapper.rs
+++ b/src/componentwrapper.rs
@@ -196,6 +196,7 @@ components!(
 			into,
 			delay,
 			target_time: if target_time == 0 { None } else { Some(Timestamp(target_time)) }
+			// please forgive me for using 0 as null
 		};
 	Equipment () {panic!("equipment from parameters not implemented")};
 	CreationTime (time: Int) {CreationTime{time: Timestamp(time)}};
diff --git a/src/main.rs b/src/main.rs
index 4732d77..68e0f50 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -125,6 +125,7 @@ fn main() -> Result<()>{
 		world.update();
 		if count % 50 == 0 {
 			world.save();
+			world.unload_rooms();
 		}
 		let messages = world.view();
 		for (player, mut message) in messages {
diff --git a/src/room.rs b/src/room.rs
index 9df131a..805f94e 100644
--- a/src/room.rs
+++ b/src/room.rs
@@ -228,6 +228,10 @@ impl <'a, 'b>Room<'a, 'b> {
 		}
 	}
 	
+	pub fn has_players(&self) -> bool {
+		!self.world.read_component::<Player>().is_empty()
+	}
+	
 	pub fn save_players(&self) -> HashMap<PlayerId, PlayerState> {
 		let mut states = HashMap::new();
 		let players = self.world.read_component::<Player>();
diff --git a/src/world.rs b/src/world.rs
index ecdc540..50a3a4b 100644
--- a/src/world.rs
+++ b/src/world.rs
@@ -24,6 +24,7 @@ pub struct World<'a, 'b> {
 	default_room: RoomId,
 	players: HashMap<PlayerId, RoomId>,
 	rooms: HashMap<RoomId, Room<'a, 'b>>,
+	room_age: HashMap<RoomId, u32>,
 	encyclopedia: Encyclopedia,
 	time: Timestamp
 }
@@ -38,11 +39,13 @@ impl <'a, 'b>World<'a, 'b> {
 			default_room,
 			encyclopedia: encyclopedia.clone(),
 			players: HashMap::new(),
-			rooms: hashmap!(purgatory::purgatory_id() => purgatory::create_purgatory(encyclopedia))
+			rooms: hashmap!(purgatory::purgatory_id() => purgatory::create_purgatory(encyclopedia)),
+			room_age: HashMap::new()
 		}
 	}
 	
 	fn get_room_mut(&mut self, id: &RoomId) -> Result<&mut Room<'a, 'b>> {
+		self.room_age.insert(id.clone(), 0);
 		let result = self.get_room_mut_(id);
 		if let Err(err) = &result {
 			println!("Failed to load room {:?}: {:?}", id, err);
@@ -169,6 +172,24 @@ impl <'a, 'b>World<'a, 'b> {
 		}
 	}
 	
+	pub fn unload_rooms(&mut self){
+		let mut to_remove = Vec::new();
+		for roomid in self.rooms.keys() {
+			if self.rooms[roomid].has_players() {
+				self.room_age.insert(roomid.clone(), 0);
+			} else {
+				let age = *self.room_age.get(&roomid).unwrap_or(&0) + 1;
+				self.room_age.insert(roomid.clone(), age);
+				if age > 2 {
+					to_remove.push(roomid.clone());
+				}
+			}
+		}
+		for roomid in to_remove {
+			self.rooms.remove(&roomid);
+		}
+	}
+	
 	pub fn view(&self) -> HashMap<PlayerId, WorldMessage> {
 		let mut views = HashMap::new();
 		for room in self.rooms.values() {