6 files changed, 39 insertions, 6 deletions
diff --git a/server/src/commands.rs b/server/src/commands.rs
index 8e6f32c7..f5792a22 100644
--- a/server/src/commands.rs
+++ b/server/src/commands.rs
@@ -239,7 +239,18 @@ impl Server {
                     .data
                     .get_item_by_name(&item)
                     .ok_or(anyhow!("unknown item"))?;
-                // TODO  prevent too many (> 1) tutorials for this player
+                #[cfg(not(test))] // TODO rust-analyser does not undestand trait upcasting
+                if self
+                    .entities
+                    .iter()
+                    .find(|e| {
+                        <dyn std::any::Any>::downcast_ref::<Tutorial>(e.as_ref())
+                            .map_or(false, |t| t.player == player)
+                    })
+                    .is_some()
+                {
+                    bail!("Tutorial already running")
+                }
                 self.entities.push(Box::new(Tutorial::new(player, item)));
             }
             Command::TranslateMessage {
diff --git a/server/src/entity/bot.rs b/server/src/entity/bot.rs
index 6f39fab2..cd505c4f 100644
--- a/server/src/entity/bot.rs
+++ b/server/src/entity/bot.rs
@@ -21,6 +21,7 @@ use hurrycurry_bot::{BotAlgo, DynBotAlgo};
 use hurrycurry_protocol::{PacketS, PlayerID};
 use log::info;
 use rand::random;
+use std::any::Any;
 
 pub type DynBotDriver = BotDriver<DynBotAlgo>;
 
@@ -43,7 +44,7 @@ impl<T: BotAlgo> BotDriver<T> {
         }
     }
 }
-impl<T: BotAlgo> Entity for BotDriver<T> {
+impl<T: BotAlgo + Any> Entity for BotDriver<T> {
     fn finished(&self) -> bool {
         self.left
     }
diff --git a/server/src/entity/campaign.rs b/server/src/entity/campaign.rs
index 5d669a4d..2e45e650 100644
--- a/server/src/entity/campaign.rs
+++ b/server/src/entity/campaign.rs
@@ -123,6 +123,12 @@ impl GateCondition {
                 o
             }
             GateCondition::Stars(map, thres) => {
+                // TODO what if the language wants map first?
+                // trm!(
+                //     "s.campaign.condition.stars",
+                //     s = thres.to_string(),
+                //     s = map.to_string()
+                // )
                 format!("Reach at least {thres} stars in {map}")
             }
         }
diff --git a/server/src/entity/mod.rs b/server/src/entity/mod.rs
index 532031d5..aa565c83 100644
--- a/server/src/entity/mod.rs
+++ b/server/src/entity/mod.rs
@@ -40,7 +40,7 @@ use hurrycurry_protocol::{
 use item_portal::ItemPortal;
 use player_portal::PlayerPortal;
 use serde::{Deserialize, Serialize};
-use std::collections::VecDeque;
+use std::{any::Any, collections::VecDeque};
 
 pub type DynEntity = Box<dyn Entity + Send + Sync + 'static>;
 pub type Entities = Vec<DynEntity>;
@@ -55,7 +55,7 @@ pub struct EntityContext<'a> {
     pub dt: f32,
 }
 
-pub trait Entity {
+pub trait Entity: Any {
     fn tick(&mut self, _c: EntityContext<'_>) -> Result<()> {
         Ok(())
     }
diff --git a/server/src/entity/tutorial.rs b/server/src/entity/tutorial.rs
index 9b2146d2..0d3d512d 100644
--- a/server/src/entity/tutorial.rs
+++ b/server/src/entity/tutorial.rs
@@ -8,7 +8,7 @@ use hurrycurry_protocol::{
 use log::{debug, warn};
 
 pub struct Tutorial {
-    player: PlayerID,
+    pub player: PlayerID,
     target: ItemIndex,
 
     current_hint: Option<(Option<IVec2>, Message)>,
@@ -30,6 +30,14 @@ impl Entity for Tutorial {
     fn finished(&self) -> bool {
         self.delete_timer <= 0.
     }
+    fn destructor(&mut self, c: EntityContext<'_>) {
+        if let Some((position, _)) = self.current_hint {
+            c.packet_out.push_back(PacketC::ServerHint {
+                position,
+                message: None,
+            });
+        }
+    }
     fn tick(&mut self, c: EntityContext<'_>) -> Result<()> {
         let mut hint = StepContext {
             ent: &c,
diff --git a/server/src/lib.rs b/server/src/lib.rs
index 306ebd40..112f28ea 100644
--- a/server/src/lib.rs
+++ b/server/src/lib.rs
@@ -15,7 +15,14 @@
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 */
-#![feature(if_let_guard, map_many_mut, let_chains, iterator_try_collect, isqrt)]
+#![feature(
+    if_let_guard,
+    map_many_mut,
+    let_chains,
+    iterator_try_collect,
+    isqrt,
+    trait_upcasting
+)]
 pub mod commands;
 pub mod data;
 pub mod entity;