Co-op matches of editor campaigns

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/menu.rs

@@ -278,6 +278,7 @@ enum Btn {
     MatchCoopPrev,
     MatchCoopNext,
     MatchCoopCreate,
+    MatchCoopSource, // switch between the built-in campaign and the editor campaign
     MatchTake(usize),
     MatchAi(usize),
     MatchReady,
@@ -392,6 +393,7 @@ pub enum MenuAction {
     MatchJoin(String),
     MatchCreate,
     MatchCoopCreate(usize),
+    MatchCoopEditorCreate(usize), // co-op match of a mission of `campaign_doc`
     MatchTakeSide(u8),
     MatchSetAi(u8, bool),
     MatchReady(bool),
@@ -414,6 +416,8 @@ pub struct Menu {
     pub error: Option<String>,   // message on the login and account pages
     pub match_ui: MatchUi,       // copied state of the multiplayer relay, shown on the Match page
     pub coop_mission: usize,     // co-op campaign mission selected on the Match page
+    pub coop_editor: bool,       // the Match page offers the editor campaign instead of the built-in one
+    pub coop_editor_mission: usize, // mission of `campaign_doc` selected for co-op
     pub in_match: bool,          // a match is being played; the pause menu changes its shape
     pub editor_test: bool,       // a mission of the editor is being tested: back to the editor
     pub custom_briefing: (String, String), // title and text of an editor mission's briefing
@@ -451,6 +455,8 @@ impl Menu {
             error: None,
             match_ui: MatchUi::default(),
             coop_mission: crate::campaign::coop_mission_indexes().first().copied().unwrap_or(0),
+            coop_editor: false,
+            coop_editor_mission: 0,
             in_match: false,
             editor_test: false,
             custom_briefing: (String::new(), String::new()),
@@ -746,16 +752,23 @@ impl Menu {
                 None => MenuAction::Consumed,
             },
             Some(Btn::MatchCreate) => MenuAction::MatchCreate,
-            Some(Btn::MatchCoopPrev) => {
-                self.coop_mission = crate::campaign::next_coop_mission(self.coop_mission, -1);
+            Some(b @ (Btn::MatchCoopPrev | Btn::MatchCoopNext)) => {
+                let dir = if b == Btn::MatchCoopPrev { -1 } else { 1 };
+                if self.coop_editor {
+                    self.coop_editor_mission = crate::campaign::next_editor_coop_mission(&self.campaign_doc, self.coop_editor_mission, dir);
+                } else {
+                    self.coop_mission = crate::campaign::next_coop_mission(self.coop_mission, dir);
+                }
                 self.confirm = None;
                 MenuAction::Consumed
             }
-            Some(Btn::MatchCoopNext) => {
-                self.coop_mission = crate::campaign::next_coop_mission(self.coop_mission, 1);
+            Some(Btn::MatchCoopSource) => {
+                self.coop_editor = !self.coop_editor && !self.campaign_doc.missions.is_empty();
+                self.coop_editor_mission = crate::campaign::next_editor_coop_mission(&self.campaign_doc, self.coop_editor_mission, 0);
                 self.confirm = None;
                 MenuAction::Consumed
             }
+            Some(Btn::MatchCoopCreate) if self.coop_editor => MenuAction::MatchCoopEditorCreate(self.coop_editor_mission),
             Some(Btn::MatchCoopCreate) => MenuAction::MatchCoopCreate(self.coop_mission),
             Some(Btn::MatchReady) => MenuAction::MatchReady(!self.match_ui.ready),
             Some(Btn::MatchStart) => MenuAction::MatchStart,
@@ -1866,7 +1879,27 @@ impl Menu {
             yy += CH() * 1.6;
         }
 
-        if !ui.started && !ui.room_open() {
+        // the editor campaign can only be offered while it has missions (it may have been replaced)
+        let editor_coop = self.coop_editor && !self.campaign_doc.missions.is_empty();
+        let editor_list = if editor_coop { crate::campaign::editor_coop_indexes(&self.campaign_doc) } else { Vec::new() };
+        if editor_coop && !editor_list.contains(&self.coop_editor_mission) {
+            self.coop_editor_mission = editor_list.first().copied().unwrap_or(0);
+        }
+        if !ui.started && !ui.room_open() && editor_coop {
+            let line = match self.campaign_doc.missions.get(self.coop_editor_mission).filter(|_| !editor_list.is_empty()) {
+                Some(m) => {
+                    let name = if self.campaign_doc.name.trim().is_empty() { "?".to_string() } else { self.campaign_doc.name.clone() };
+                    let title = if m.title.trim().is_empty() { m.key.clone() } else { m.title.clone() };
+                    trf("net.coop_editor_mission", &[name, (self.coop_editor_mission + 1).to_string(), title])
+                }
+                None => tr("net.coop_editor_none"),
+            };
+            let maxc = ((cols - 6) as f32 * CW() / (GW * SMALL())) as usize;
+            for text in wrap(&line, maxc).iter().take(2) {
+                gfx.text(text, ix, yy, SMALL(), GOLD);
+                yy += GH * SMALL() * 1.35;
+            }
+        } else if !ui.started && !ui.room_open() {
             if let Some(d) = missions().get(self.coop_mission) {
                 let line = trf("net.coop_mission", &[(self.coop_mission + 1).to_string(), tr(&format!("camp.{}.title", d.key))]);
                 let maxc = ((cols - 6) as f32 * CW() / (GW * SMALL())) as usize;
@@ -1885,9 +1918,14 @@ impl Menu {
             items.push((Btn::MatchCreate, tr("net.create")));
             items.push((Btn::MatchJoin, tr("net.join")));
             if !ui.room_open() {
-                items.push((Btn::MatchCoopPrev, "<".to_string()));
-                items.push((Btn::MatchCoopCreate, tr("net.coop_create")));
-                items.push((Btn::MatchCoopNext, ">".to_string()));
+                if !editor_coop || !editor_list.is_empty() {
+                    items.push((Btn::MatchCoopPrev, "<".to_string()));
+                    items.push((Btn::MatchCoopCreate, tr("net.coop_create")));
+                    items.push((Btn::MatchCoopNext, ">".to_string()));
+                }
+                if !self.campaign_doc.missions.is_empty() {
+                    items.push((Btn::MatchCoopSource, tr(if editor_coop { "net.coop_builtin" } else { "net.coop_editor" })));
+                }
             }
             if ui.room_open() {
                 items.push((Btn::MatchReady, tr(if ui.ready { "net.unready" } else { "net.ready" })));