allow including shared files via .include_native

src/Main.cc

@@ -1525,7 +1525,7 @@ Action a_assemble_quest_script(
           ? phosg::dirname(input_filename)
           : ".";
 
-      string result = assemble_quest_script(text, include_dir);
+      string result = assemble_quest_script(text, {include_dir, "system/client-functions/System"});
       bool compress = !args.get<bool>("decompressed");
       if (compress) {
         if (args.get<bool>("optimal")) {

src/Quest.cc

@@ -637,8 +637,7 @@ QuestIndex::QuestIndex(
           file_data = decode_dlq_data(phosg::load_file(file_path));
           filename.resize(filename.size() - 4);
         } else if (phosg::ends_with(filename, ".bin.txt")) {
-          string include_dir = phosg::dirname(file_path);
-          file_data = assemble_quest_script(phosg::load_file(file_path), include_dir);
+          file_data = assemble_quest_script(phosg::load_file(file_path), {phosg::dirname(file_path), "system/client-functions/System"});
           filename.resize(filename.size() - 4);
           if (phosg::ends_with(filename, ".bin")) {
             filename.push_back('d');

src/QuestScript.cc

@@ -3989,7 +3989,7 @@ struct RegisterAssigner {
   array<shared_ptr<Register>, 0x100> numbered_regs;
 };
 
-std::string assemble_quest_script(const std::string& text, const std::string& include_directory) {
+std::string assemble_quest_script(const std::string& text, const vector<string>& include_directories) {
   auto lines = phosg::split(text, '\n');
 
   // Strip comments and whitespace
@@ -4198,6 +4198,17 @@ std::string assemble_quest_script(const std::string& text, const std::string& in
   };
 
   // Assemble code segment
+
+  auto get_include = [&](const std::string& filename) -> std::string {
+    for (const auto& include_dir : include_directories) {
+      string path = include_dir + "/" + filename;
+      if (phosg::isfile(path)) {
+        return phosg::load_file(path);
+      }
+    }
+    throw runtime_error("data not found for include: " + filename);
+  };
+
   bool version_has_args = F_HAS_ARGS & v_flag(quest_version);
   const auto& opcodes = opcodes_by_name_for_version(quest_version);
   phosg::StringWriter code_w;
@@ -4232,12 +4243,12 @@ std::string assemble_quest_script(const std::string& text, const std::string& in
         } else if (phosg::starts_with(line, ".include_bin ")) {
           string filename = line.substr(13);
           phosg::strip_whitespace(filename);
-          code_w.write(phosg::load_file(include_directory + "/" + filename));
+          code_w.write(get_include(filename));
         } else if (phosg::starts_with(line, ".include_native ")) {
 #ifdef HAVE_RESOURCE_FILE
           string filename = line.substr(16);
           phosg::strip_whitespace(filename);
-          string native_text = phosg::load_file(include_directory + "/" + filename);
+          string native_text = get_include(filename);
           string code;
           if (is_ppc(quest_version)) {
             code = std::move(ResourceDASM::PPC32Emulator::assemble(native_text).code);

src/QuestScript.hh

@@ -91,6 +91,6 @@ std::string disassemble_quest_script(
     uint8_t override_language = 0xFF,
     bool reassembly_mode = false,
     bool use_qedit_names = false);
-std::string assemble_quest_script(const std::string& text, const std::string& include_directory);
+std::string assemble_quest_script(const std::string& text, const std::vector<std::string>& include_directories);
 
 Episode find_quest_episode_from_script(const void* data, size_t size, Version version);