save game state about Luna's introduction

src/chat.rs

@@ -834,6 +834,7 @@ pub fn handle_chat_scripts(
     mut ew_sfx: EventWriter<audio::PlaySfxEvent>,
     mut ew_effect: EventWriter<visual::SpawnEffectEvent>,
     mut ew_achievement: EventWriter<game::AchievementEvent>,
+    mut prefs: ResMut<var::Preferences>,
     id2pos: Res<game::Id2Pos>,
     id2v: Res<game::Id2V>,
 ) {
@@ -941,6 +942,10 @@ pub fn handle_chat_scripts(
             "drinkpizza" => {
                 ew_achievement.send(game::AchievementEvent::DrinkPizza);
             }
+            "save_state_luna_intro" => {
+                prefs.state_luna_intro = true;
+                prefs.save();
+            }
             _ => {
                 error!("Error, undefined chat script {name}");
             }
@@ -951,6 +956,7 @@ pub fn handle_chat_scripts(
 pub fn update_chat_variables(
     mut vars: ResMut<var::GameVars>,
     q_player: Query<&actor::Suit, With<actor::Player>>,
+    prefs: ResMut<var::Preferences>,
 ) {
     if let Ok(suit) = q_player.get_single() {
         vars.set_in_scope(
@@ -963,5 +969,10 @@ pub fn update_chat_variables(
             "player_suit_health_percent",
             ((suit.integrity * 100.0).round() as u8).to_string(),
         );
+        vars.set_in_scope(
+            "$",
+            "state_luna_intro",
+            if prefs.state_luna_intro { 1 } else { 0 }.to_string(),
+        );
     }
 }

src/chats/serenity.yaml

@@ -364,6 +364,24 @@
   - No problem at all!
   - set: grateful 0
   - goto: mainnode
+- if: "$$state_luna_intro"
+  Outer Woods:
+  - if $explained:
+    - ...
+    - Yes, Outer Woods.
+    - At some point in my life, I made up various phrases which I can tell someone who claims to be able to travel back in time.
+    - The idea is, if someone will ever tell me one of those phrase *before* I tell them, it proves their time travel story.
+    - But... You're telling me the phrase *after* I told you.
+    - So you are proving nothing.
+    - Go kill yourself, show me how you magically wake up, and *then* tell me the phrase.
+    - goto: mainnode
+  - if ~$explained:
+    - Wh...
+    - How?
+    - YOU'RE AN ACTUAL TIME TRAVELER!
+    - Ok, I believe you now.
+    - My script is not finished though, so I won't do anything about it. *shrug*
+    - goto: mainnode
 - What are you up to?:
   - I'm running a workshop. Come by if you need any repairs!
   - Tinkering on various projects.
@@ -458,7 +476,7 @@
   - I just want to get away. From all this insanity, triviality, stupor...
   - Just want to create, without anyone standing in my way.
   - goto: mainnode
-- if: $timetravel
+- if: "$timetravel"
   Do you think time travel into the past is possible?:
   - No.
   - Well, theoretically, there's all sorts of way to do this but none of them are feasible.
@@ -474,6 +492,8 @@
       - Fascinating.
       - I don't believe you.
       - But there is obviously one way we can easily validate this.
+      - set: $explained
+      - script: save_state_luna_intro
       - "Kill yourself. Then come back to me, and make the first thing you say to me: Outer Woods."
       - That's genius.:
         - Thank you!

src/var.rs

@@ -455,6 +455,9 @@ pub struct Preferences {
     pub shadows_sun: bool,
     pub avatar: usize,
 
+    // permanent game state
+    pub state_luna_intro: bool,
+
     #[serde(skip)]
     pub source_file: Option<String>,
 }