Add callback on_mapblocks_changed

1 files changed, 25 insertions, 0 deletions

diff --git a/src/serverenvironment.cpp b/src/serverenvironment.cpp
index 9dd5ba621..aa6ba2f96 100644
--- a/src/serverenvironment.cpp
+++ b/src/serverenvironment.cpp
@@ -382,6 +382,18 @@ void ActiveBlockList::update(std::vector<PlayerSAO*> &active_players,
 }
 
 /*
+	OnMapblocksChangedReceiver
+*/
+
+void OnMapblocksChangedReceiver::onMapEditEvent(const MapEditEvent &event)
+{
+	assert(receiving);
+	for (const v3s16 &p : event.modified_blocks) {
+		modified_blocks.insert(p);
+	}
+}
+
+/*
 	ServerEnvironment
 */
 
@@ -476,6 +488,11 @@ void ServerEnvironment::init()
 
 	m_player_database = openPlayerDatabase(player_backend_name, m_path_world, conf);
 	m_auth_database = openAuthDatabase(auth_backend_name, m_path_world, conf);
+
+	if (m_map && m_script->has_on_mapblocks_changed()) {
+		m_map->addEventReceiver(&m_on_mapblocks_changed_receiver);
+		m_on_mapblocks_changed_receiver.receiving = true;
+	}
 }
 
 ServerEnvironment::~ServerEnvironment()
@@ -1570,6 +1587,14 @@ void ServerEnvironment::step(float dtime)
 	// Send outdated detached inventories
 	m_server->sendDetachedInventories(PEER_ID_INEXISTENT, true);
 
+	// Notify mods of modified mapblocks
+	if (m_on_mapblocks_changed_receiver.receiving &&
+			!m_on_mapblocks_changed_receiver.modified_blocks.empty()) {
+		std::unordered_set<v3s16> modified_blocks;
+		std::swap(modified_blocks, m_on_mapblocks_changed_receiver.modified_blocks);
+		m_script->on_mapblocks_changed(modified_blocks);
+	}
+
 	const auto end_time = porting::getTimeUs();
 	m_step_time_counter->increment(end_time - start_time);
 }