From 4b69dc659ede919927c9e1ff22898216ace04065 Mon Sep 17 00:00:00 2001
From: Dino <macwiz23@comcast.net>
Date: Tue, 9 Dec 2025 13:53:23 -0500
Subject: [PATCH] Lua: add event signal for extra appearance/disappearance

See RM #1804
---
 server/scripting/script_server.c | 3 +++
 server/srv_main.c                | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/server/scripting/script_server.c b/server/scripting/script_server.c
index f5e5f6a5b8..cedd3443b4 100644
--- a/server/scripting/script_server.c
+++ b/server/scripting/script_server.c
@@ -574,6 +574,9 @@ static void script_server_signals_create(void)
   luascript_signal_create(fcl_main, "action_finished_unit_self", 3,
                           API_TYPE_ACTION, API_TYPE_BOOL,
                           API_TYPE_UNIT);
+
+  luascript_signal_create(fcl_main, "extra_appeared", 3,
+                          API_TYPE_STRING, API_TYPE_TILE, API_TYPE_BOOL);
 }
 
 /***********************************************************************//**
diff --git a/server/srv_main.c b/server/srv_main.c
index 107fb9d875..6eb18fc39c 100644
--- a/server/srv_main.c
+++ b/server/srv_main.c
@@ -1714,6 +1714,10 @@ static void end_turn(void)
 
         tile_extra_rm_apply(ptile, pextra);
 
+        script_server_signal_emit("extra_appeared",
+                                  extra_name_translation(pextra),
+                                  ptile, FALSE);
+
         update_tile_knowledge(ptile);
 
         if (owner == nullptr) {
@@ -1758,6 +1762,10 @@ static void end_turn(void)
 
         tile_extra_apply(ptile, pextra);
 
+        script_server_signal_emit("extra_appeared",
+                                  extra_name_translation(pextra),
+                                  ptile, TRUE);
+
         update_tile_knowledge(ptile);
 
         if (owner == nullptr) {
-- 
2.31.0