Add callback on_mapblocks_changed

1 files changed, 33 insertions, 0 deletions

diff --git a/src/script/cpp_api/s_env.cpp b/src/script/cpp_api/s_env.cpp
index e49113405..3cbb13cd2 100644
--- a/src/script/cpp_api/s_env.cpp
+++ b/src/script/cpp_api/s_env.cpp
@@ -299,3 +299,36 @@ void ScriptApiEnv::on_liquid_transformed(
 
 	runCallbacks(2, RUN_CALLBACKS_MODE_FIRST);
 }
+
+void ScriptApiEnv::on_mapblocks_changed(const std::unordered_set<v3s16> &set)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Get core.registered_on_mapblocks_changed
+	lua_getglobal(L, "core");
+	lua_getfield(L, -1, "registered_on_mapblocks_changed");
+	luaL_checktype(L, -1, LUA_TTABLE);
+	lua_remove(L, -2);
+
+	// Convert the set to a set of position hashes
+	lua_createtable(L, 0, set.size());
+	for(const v3s16 &p : set) {
+		lua_pushnumber(L, hash_node_position(p));
+		lua_pushboolean(L, true);
+		lua_rawset(L, -3);
+	}
+	lua_pushinteger(L, set.size());
+
+	runCallbacks(2, RUN_CALLBACKS_MODE_FIRST);
+}
+
+bool ScriptApiEnv::has_on_mapblocks_changed()
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Get core.registered_on_mapblocks_changed
+	lua_getglobal(L, "core");
+	lua_getfield(L, -1, "registered_on_mapblocks_changed");
+	luaL_checktype(L, -1, LUA_TTABLE);
+	return lua_objlen(L, -1) > 0;
+}