fix compiler warnings (GCC + Clang)

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

@@ -145,7 +145,7 @@ static int get_axis(lua::State* L) {
     }
     auto z = lua::tointeger(L, 3);
 
-    glm::ivec3 defAxis;
+    glm::ivec3 defAxis {};
     defAxis[n] = 1;
 
     auto vox = blocks_agent::get(*level->chunks, x, y, z);
@@ -562,6 +562,7 @@ static int set_field(
                 return lua::pushinteger(L,
                     dataStruct.setUnicode(dst, value.asString(), field));
             }
+            [[fallthrough]];
         case data::FieldType::I8:
         case data::FieldType::I16:
         case data::FieldType::I32:

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

@@ -13,7 +13,6 @@
 using namespace scripting;
 
 static int l_save_fragment(lua::State* L) {
-    const auto& paths = engine->getPaths();
     auto fragment = lua::touserdata<lua::LuaVoxelFragment>(L, 1);
     auto file = lua::require_string(L, 2);
     auto map = fragment->getFragment()->serialize();
@@ -55,13 +54,11 @@ static int l_get_generators(lua::State* L) {
 
     lua::createtable(L, 0, 0);
 
-    int i = 1;
     for (const auto& pack : packs) {
         auto pairs = ContentLoader::scanContent(pack, ContentType::GENERATOR);
         for (const auto& [name, caption] : pairs) {
             lua::pushstring(L, caption);
             lua::setfield(L, name);
-            i++;
         }
     }
     return 1;

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

@@ -783,7 +783,7 @@ static int l_gui_escape_markup(lua::State* L) {
     auto lang = lua::require_string(L, 1);
     std::string text = lua::require_string(L, 2);
     if (std::strcmp(lang, "md") == 0) {
-        text = std::move(markdown::escape<char>(text));
+        text = markdown::escape<char>(text);
     }
     return lua::pushstring(L, text);
 }

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

@@ -227,7 +227,6 @@ static int l_has_data(lua::State* L, ItemStack& stack) {
 static int l_set_data(lua::State* L, ItemStack& stack) {
     auto key = lua::require_string(L, 3);
     auto value = lua::tovalue(L, 4);
-    auto& fields = stack.getFields();
     stack.setField(key, std::move(value));
     return 0;
 }

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

@@ -235,7 +235,7 @@ static int l_pack_assemble(lua::State* L) {
     auto manager = engine->createPacksManager(worldFolder);
     manager.scan();
     try {
-        ids = std::move(manager.assemble(ids));
+        ids = manager.assemble(ids);
     } catch (const contentpack_error& err) {
         throw std::runtime_error(
             std::string(err.what()) + " [" + err.getPackId() + "]"

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

@@ -59,7 +59,6 @@ static int l_get_origin(lua::State* L) {
 static int l_set_origin(lua::State* L) {
     u64id_t id = lua::touinteger(L, 1);
     if (auto emitter = renderer->particles->getEmitter(id)) {
-        EmitterOrigin origin;
         if (lua::istable(L, 2)) {
             emitter->setOrigin(lua::tovec3(L, 2));
         } else {

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

@@ -149,9 +149,7 @@ static int l_get_chunk_data(lua::State* L) {
 static void integrate_chunk_client(Chunk& chunk) {
     int x = chunk.x;
     int z = chunk.z;
-    auto chunksController = controller->getChunksController();
-    
-    Lighting& lighting = *chunksController->lighting;
+
     chunk.flags.loadedLights = false;
     chunk.flags.lighted = false;
     chunk.lightmap.clear();

src/logic/scripting/lua/usertypes/lua_type_heightmap.cpp

@@ -50,7 +50,6 @@ const float* LuaHeightmap::getValues() const {
 }
 
 static int l_dump(lua::State* L) {
-    const auto& paths = scripting::engine->getPaths();
     if (auto heightmap = touserdata<LuaHeightmap>(L, 1)) {
         io::path file = require_string(L, 2);
         uint w = heightmap->getWidth();