From a5df8cdd29916963a20668b642b1e5f2f095dc20 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Wed, 1 Apr 2026 20:32:23 +0200
Subject: [PATCH] ru:: map switches

---
 rogueviz/ru/classes.cpp    | 22 ++++++++++++++++++++++
 rogueviz/ru/entity.cpp     | 14 ++++++++++++++
 rogueviz/ru/load-world.cpp | 24 ++++++++++++++++++++++++
 3 files changed, 60 insertions(+)

diff --git a/rogueviz/ru/classes.cpp b/rogueviz/ru/classes.cpp
index e388eff1..61431837 100644
--- a/rogueviz/ru/classes.cpp
+++ b/rogueviz/ru/classes.cpp
@@ -171,6 +171,12 @@ struct room {
     place_block_full(x, y, b);
     }
   
+  void replace_block_death(int x, int y, eWall w) {
+    auto orig = at(x, y);
+    replace_block(x, y, w);
+    add_revert(death_revert, {"BLOCK", id, its(x), its(y), its(orig)});
+    }
+
   void replace_block_frev(int x, int y, eWall w) {
     auto orig = at(x, y);
     replace_block(x, y, w);
@@ -553,6 +559,22 @@ struct timed_orb : public located_entity {
   string get_help() override { return "These orbs activate mechanisms for a limited time."; }
   };
 
+struct switch_event {
+  bbox box;
+  eWall wall;
+  };
+
+struct mapswitch : public located_entity {
+  vector<switch_event> events;
+  string text, name;
+  xy siz() override { return {18, 18}; }
+  string glyph() override { return "!"; }
+  color_t color() override { return 0xA06000FF; }
+  void act() override;
+  string get_name() override { return name; }
+  string get_help() override { return text; }
+  };
+
 struct npc_or_trader : public located_entity {
   string text, name;
   int talk_on;
diff --git a/rogueviz/ru/entity.cpp b/rogueviz/ru/entity.cpp
index 5fba4830..18c46698 100644
--- a/rogueviz/ru/entity.cpp
+++ b/rogueviz/ru/entity.cpp
@@ -369,6 +369,20 @@ void npc_or_trader::act() {
     }
   }
 
+void mapswitch::act() {
+  if(intersect(get_pixel_bbox(), m.get_pixel_bbox())) {
+    bool didsomething = false;
+    for(auto& ev: events) {
+      for(int y=ev.box.miny; y<ev.box.maxy; y++)
+      for(int x=ev.box.minx; x<ev.box.maxx; x++) {
+        int b = current_room->at(x, y);
+        if(b != ev.wall) { didsomething = true; current_room->replace_block_death(x, y, ev.wall); }
+        }
+      }
+    if(didsomething) addMessage(text);
+    }
+  }
+
 extern int gold_id;
 
 string shopitem::glyph() { if(bought) return powers[gold_id].get_glyph(); else return item::glyph(); }
diff --git a/rogueviz/ru/load-world.cpp b/rogueviz/ru/load-world.cpp
index 9efa5af8..a2085e32 100644
--- a/rogueviz/ru/load-world.cpp
+++ b/rogueviz/ru/load-world.cpp
@@ -105,6 +105,8 @@ void create_long_rope(room& r, int step, xy w) {
     }
   }
 
+mapswitch *lmev;
+
 void load_room(fhstream& f, cell *c) {
   setdist(c, 7, nullptr);
   auto& r = *get_room_at(c);
@@ -370,6 +372,28 @@ void load_room(fhstream& f, cell *c) {
         b->text = scanline_noblank(f);
         visions.emplace_back(std::move(b));
         }
+      else if(cap == "MAPSWITCH") {
+        auto b = std::make_unique<mapswitch>();
+        b->respawn = get_xy();
+        b->name = scanline_noblank(f);
+        b->text = scanline_noblank(f);
+        lmev = &*b;
+        r.entities.emplace_back(std::move(b));
+        }
+      else if(cap == "SWITCHEVENT") {
+        if(!lmev) throw hr_exception("SWITCHEVENT without MAPSWITCH");
+        auto& ev = lmev->events;
+        ev.emplace_back();
+        ev.back().box.minx = get_int();
+        ev.back().box.miny = get_int();
+        ev.back().box.maxx = get_int();
+        ev.back().box.maxy = get_int();
+        ev.back().wall = wDoor;
+        bool ok = false;
+        for(int i=0; i<qwall; i++) if(walls[i].name + " " == param)
+          ev.back().wall = eWall(i), ok = true;
+        if(!ok) println(hlog, "warning: SWITCHEVENT wall not recognized");
+        }
       else println(hlog, "unknown mapline ", s);
       }
     else println(hlog, "unknown mapline ", s);