implement "include" token for chats

src/chat.rs

@@ -1,9 +1,10 @@
+use crate::{actor, audio, hud, settings, world, effects};
 use bevy::prelude::*;
 use bevy::math::DVec3;
 use bevy_xpbd_3d::prelude::*;
 use serde_yaml::Value;
 use serde::Deserialize;
-use crate::{actor, audio, hud, settings, world, effects};
+use std::collections::HashMap;
 
 pub const CHATS: &[&str] = &[
     include_str!("chats/serenity.yaml"),
@@ -22,6 +23,8 @@ pub const TOKEN_LABEL: &str = "label";
 pub const TOKEN_SCRIPT: &str = "script";
 pub const TOKEN_SOUND: &str = "sound";
 pub const TOKEN_NOWAIT: &str = "nowait";
+
+pub const TOKEN_INCLUDE: &str = "include";
 pub const TOKEN_GOTO_EXIT: &str = "EXIT";
 
 pub const DEFAULT_SOUND: &str = "chat";
@@ -142,6 +145,56 @@ impl ChatDB {
         return Ok(());
     }
 
+    pub fn preprocess_includes(&mut self) {
+        let mut include_db: HashMap<String, Vec<Value>> = HashMap::new();
+        for sequence in &self.0 {
+            if let Some(vector) = sequence.as_sequence() {
+                if let Some(first_item) = vector.get(0) {
+                    if let Some(map) = first_item.as_mapping() {
+                        for (key, value) in map {
+                            if let (Some(key), Some(value)) = (key.as_str(), value.as_str()) {
+                                if key == TOKEN_CHAT {
+                                    include_db.insert(value.to_string(), vector.clone());
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        for mut sequence in self.0.iter_mut() {
+            ChatDB::preprocess_includes_recursively(&mut sequence, &include_db);
+        }
+    }
+
+    fn preprocess_includes_recursively(sequence: &mut Value, include_db: &HashMap<String, Vec<Value>>) {
+        let mut changes: Vec<(usize, String)> = Vec::new();
+        if let Some(vector) = sequence.as_sequence_mut() {
+            for (index, item) in vector.iter_mut().enumerate() {
+                match item {
+                    Value::Mapping(map) => {
+                        for (key, value) in map.iter_mut() {
+                            if let (Some(key), Some(value)) = (key.as_str(), value.as_str()) {
+                                if key == TOKEN_INCLUDE {
+                                    changes.push((index, value.to_string()));
+                                }
+                            }
+                            else if value.is_sequence() {
+                                ChatDB::preprocess_includes_recursively(value, include_db);
+                            }
+                        }
+                    }
+                    _ => {}
+                }
+            }
+            for (index, label) in changes {
+                vector.remove(index);
+                vector.splice(index..index, include_db[&label].iter().cloned());
+            }
+        }
+        return;
+    }
+
     pub fn get_chat_by_id(&self, id: &String) -> Result<usize, String> {
         let mut found: Option<usize> = None;
         for (index, object_yaml) in self.0.iter().enumerate() {
@@ -483,6 +536,7 @@ pub fn load_chats(mut chatdb: ResMut<ChatDB>) {
             error!("Could not load chat definitions.  Validate files in `src/chats/` path.");
         }
     }
+    chatdb.preprocess_includes();
 }
 
 pub fn handle_new_conversations(

src/chats/startrans.yaml

@@ -11,7 +11,7 @@
 - "Ready for a trip?  Available bus stops: Oscillation Station, Metis Prime Station"
 - set: busstop serenity
 - label: startransbusstop
-- goto: EXIT
+- include: BusStops
 - label: interesting
 - Serenity Station is famous for the best pizza across the Jovian Rings.
 - Look for the neon sign of the pizzeria nearby.
@@ -25,7 +25,7 @@
 - "Ready for a trip?  Available bus stops: Oscillation Station, Serenity Station"
 - set: busstop metis
 - label: startransbusstop
-- goto: EXIT
+- include: BusStops
 - label: interesting
 - This area is an industrial paradise for asteroid miners.
 - Though it has been recently abandoned due to the excessive particle radiation.
@@ -40,7 +40,7 @@
 - "Ready for a trip?  Available bus stops: Serenity Station, Metis Prime Station"
 - set: busstop oscillation
 - label: startransbusstop
-- goto: EXIT
+- include: BusStops
 - label: interesting
 - The main attraction around here is the gorgeous view onto Jupiter from far up ahead.
 
@@ -48,7 +48,7 @@
 ---
 
 
-- addon: startransbusstop
+- chat: BusStops
 - Bus stop?! How does this work?:
   - StarTrans Cargo Services is the most convenient way to travel the vast distances of space.
   - Just activate your suit's built-in cryostasis. A StarTrans carrier will pick you up and you will wake up at your destination in the blink of an eye.
@@ -56,7 +56,7 @@
   - goto: startransbusstop
 - Can I take a spacecraft with me?:
   - Absolutely.
-  - goto startransbusstop
+  - goto: startransbusstop
 - if: busstop != "oscillation"
   Take me to Oscillation Station, please.:
   - StarTrans wishes you a pleasant journey.
@@ -85,3 +85,4 @@
   - goto: interesting
 - No, thank you.:
 - Feel free to come back any time.
+- goto: EXIT