fix: extended block always main segment passed to on_iteract

src/logic/scripting/lua/libs/libblock.cpp

@@ -211,6 +211,7 @@ static int l_get_user_bits(lua::State* L) {
     auto x = lua::tointeger(L, 1);
     auto y = lua::tointeger(L, 2);
     auto z = lua::tointeger(L, 3);
+
     auto offset = lua::tointeger(L, 4) + VOXEL_USER_BITS_OFFSET;
     auto bits = lua::tointeger(L, 5);
 
@@ -218,6 +219,11 @@ static int l_get_user_bits(lua::State* L) {
     if (vox == nullptr) {
         return lua::pushinteger(L, 0);
     }
+    const auto& def = content->getIndices()->blocks.require(vox->id);
+    if (def.rt.extended) {
+        auto origin = level->chunks->seekOrigin({x, y, z}, def, vox->state);
+        vox = level->chunks->get(origin.x, origin.y, origin.z);
+    }
     uint mask = ((1 << bits) - 1) << offset;
     uint data = (blockstate2int(vox->state) & mask) >> offset;
     return lua::pushinteger(L, data);
@@ -241,6 +247,11 @@ static int l_set_user_bits(lua::State* L) {
     if (vox == nullptr) {
         return 0;
     }
+    const auto& def = content->getIndices()->blocks.require(vox->id);
+    if (def.rt.extended) {
+        auto origin = level->chunks->seekOrigin({x, y, z}, def, vox->state);
+        vox = level->chunks->get(origin);
+    }
     vox->state.userbits = (vox->state.userbits & (~mask)) | value;
     chunk->setModifiedAndUnsaved();
     return 0;