Harden android startup path

I did this as part of looking into `WorldMapSlots=21` support.  I don't fully understand that one yet, but this semantics preserving cleanup is worth committing

.github/workflows/ci-build-web.yml

@@ -86,6 +86,10 @@ jobs:
           SITE_BASE:  ${{ steps.set-path.outputs.SITE_BASE }}
           F2_GAME_VERSION: Game=${{github.event.pull_request.head.sha || github.sha }}
 
+      - name: Place hash file
+        if: github.event_name == 'push' || (github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository)
+        run: echo "$GITHUB_SHA" > fallout2-ce-ems/dist/site_hash.txt
+
       - name: Install rsync (required for the next step)
         if: github.event_name == 'push' || (github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository)
         run: |
@@ -101,6 +105,28 @@ jobs:
           clean: false
           single-commit: true
 
+
+
+      - name: Check that site is deployed
+        if: github.event_name == 'push' || (github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository)
+        run: |
+          URL="$SITE_ORIGIN""$SITE_BASE""site_hash.txt"
+          echo "Expecting $GITHUB_SHA from $URL"
+          for i in `seq 1 80`; do
+            got="$(curl -fsSL --max-time 10 "$URL" | tr -d '\r\n' || true)"
+            if [ "$got" = "$GITHUB_SHA" ]; then
+              echo "✅ Match on attempt $i: ${got}"
+              exit 0
+            fi
+            echo "Received $got, waiting"
+            sleep 5
+          done
+          exit 1
+
+        env:
+          SITE_ORIGIN: https://${{ github.repository_owner }}.github.io
+          SITE_BASE: ${{ steps.set-path.outputs.SITE_BASE }}
+
       - name: Update deployment status
         if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
         uses: bobheadxi/deployments@v1

.github/workflows/ci-build.yml

@@ -328,16 +328,16 @@ jobs:
       - name: Clone
         uses: actions/checkout@v4
 
-      - name: Install Visual Studio 2019 Build Tools with v141_xp
+      - name: Install Visual Studio 2022 Build Tools with v141_xp
         shell: cmd
         run: |
-          choco install visualstudio2019buildtools -y --package-parameters="'--add Microsoft.VisualStudio.Workload.VCTools --add Microsoft.VisualStudio.Component.VC.v141.x86.x64 --add Microsoft.VisualStudio.Component.VC.v141.xp --add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 --add Microsoft.VisualStudio.Component.Windows10SDK.10240 --add Microsoft.VisualStudio.ComponentGroup.NativeDesktop.WinXP --add Microsoft.VisualStudio.Component.WinXP'"
+          choco install visualstudio2022buildtools -y --package-parameters="'--add Microsoft.VisualStudio.Workload.VCTools --add Microsoft.VisualStudio.Component.VC.v141.x86.x64 --add Microsoft.VisualStudio.Component.VC.v141.xp --add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 --add Microsoft.VisualStudio.Component.Windows10SDK.10240 --add Microsoft.VisualStudio.ComponentGroup.NativeDesktop.WinXP --add Microsoft.VisualStudio.Component.WinXP'"
 
       - name: Cache cmake build
         uses: actions/cache@v4
         with:
           path: out
-          key: windows-${{ matrix.arch }}-cmake-v101
+          key: windows-${{ matrix.arch }}-cmake-v102
 
       - name: Configure
         shell: cmd
@@ -432,4 +432,4 @@ jobs:
           tag_name: continious
           draft: false
           prerelease: true
-          name: Fallout2-CE Continuous Build
+          name: Fallout2-CE Continuous Build

CMakeLists.txt

@@ -286,8 +286,11 @@ target_sources(${EXECUTABLE_NAME} PUBLIC
     "src/sfall_metarules.h"
     "src/sfall_opcodes.cc"
     "src/sfall_opcodes.h"
+    "src/sfall_script_hooks.cc"
     "src/sfall_arrays.cc"
     "src/sfall_arrays.h"
+    "src/sfall_animation.cc"
+    "src/sfall_animation.h"
     "src/sfall_callbacks.cc"
     "src/sfall_callbacks.h"
     "src/touch.cc"
@@ -318,7 +321,8 @@ endif()
 if(WIN32)
     target_link_libraries(${EXECUTABLE_NAME}
         winmm
-        libcpmt
+        debug libcpmtd
+        optimized libcpmt
     )
 endif()
 
@@ -430,6 +434,7 @@ endif()
 
 add_subdirectory("third_party/fpattern")
 target_link_libraries(${EXECUTABLE_NAME} fpattern::fpattern)
+target_link_libraries(${EXECUTABLE_NAME} fpattern_windows::fpattern_windows)
 
 target_link_libraries(${EXECUTABLE_NAME} ${ZLIB_LIBRARIES})
 target_include_directories(${EXECUTABLE_NAME} PRIVATE ${ZLIB_INCLUDE_DIRS})

CMakePresets.json

@@ -28,7 +28,7 @@
             "inherits": [
                 "windows-base"
             ],
-            "generator": "Visual Studio 16 2019",
+            "generator": "Visual Studio 17 2022",
             "architecture": "Win32",
             "cacheVariables": {
                 "CMAKE_GENERATOR_TOOLSET": "v141_xp",
@@ -42,7 +42,7 @@
             "inherits": [
                 "windows-base"
             ],
-            "generator": "Visual Studio 16 2019",
+            "generator": "Visual Studio 17 2022",
             "architecture": "x64",
             "cacheVariables": {
                 "CMAKE_MSVC_RUNTIME_LIBRARY": "MultiThreaded$<$<CONFIG:Debug>:Debug>"

README.md

@@ -126,6 +126,17 @@ IFACE_BAR_SIDES_ORI=0
 ;if IFACE_BAR_WIDTH=640 - Interface bar will remain at it's original width.
 ;if IFACE_BAR_WIDTH=800 - Interface bar will use 800pix wide asset from f2_res.dat.
 ;IFACE_BAR_WIDTH=640
+
+[STATIC_SCREENS]
+;if SPLASH_SCRN_SIZE=0 - Splash screen shows at original size if it fits, otherwise scales down while preserving aspect ratio.
+;if SPLASH_SCRN_SIZE=1 - Splash screen scales to fit the screen while preserving aspect ratio.
+;if SPLASH_SCRN_SIZE=2 - Splash screen stretches to fill the entire screen.
+SPLASH_SCRN_SIZE=0
+
+[MAPS]
+;if IGNORE_MAP_EDGES=0 - Hi-Res map scroll edges are enabled.
+;if IGNORE_MAP_EDGES=1 - Hi-Res map scroll edges are ignored.
+IGNORE_MAP_EDGES=0
 ```
 
 Recommendations:

SFALL_COMPATIBILITY.md

@@ -0,0 +1,104 @@
+# Sfall Compatibility
+
+This document tracks Fallout 2 CE compatibility with sfall.  This is for modders who need to know which Sfall features work in CE.
+
+For now, this covers opcodes/metarules, and hooks.  In the future, it will include other ways of modifying the engine (like ini files), and other Sfall-specific behaviour.
+
+## Opcodes / Metarules
+
+See [`https://sfall-team.github.io/sfall/`](https://sfall-team.github.io/sfall/) for documentation on specific functions.
+
+| Group | Opcodes In Group | Compatibility | Notes |
+| --- | --- | --- | --- |
+| Direct memory access| read_byte,short,int,string<br>write_byte,short,int,string<br>call_offset_vX | 🚫 | Not possible.  Open an issue if you need functionality not covered by other opcodes. |
+| Stats | get/set_pc_base_stat<br>get/set_pc_extra_stat<br>get/set_critter_base_stat<br>get/set_critter_extra_stat | ✅ | CE uses engine stat helpers here instead of sfall's direct proto-field behavior, so derived-stat update behavior can differ. |
+| Stats / Alter min/max | get/set_stat_min/max<br>set_pc_stat_min/max<br>set_npc_stat_min/max | not implemented | - |
+| Skills | get/set_critter_skill_points<br>get/set_available_skill_points<br>set_skill_max<br>set_critter_skill_mod<br>set_base_skill_mod<br>mod_skill_points_per_level | not implemented | - |
+| Graphics | graphics_funcs_available<br>force_graphics_refresh<br>get_screen_width<br>get_screen_height<br>set_palette | implemented: only get_screen_width, get_screen_height | - |
+| Shaders | load_shader<br>free_shader<br>activate_shader<br>deactivate_shader<br>set/get_shader_* | 🚫 | likely will not implement direct compatibility
+| Perks and traits | set_perk_image<br>set_perk_*<br>set_pyromaniac_mod<br>apply_heaveho_fix<br>set_swiftlearner_mod<br>set_fake_perk<br>set_fake_trait<br>set_selectable_perk<br>set_perkbox_title<br>hide_real_perks<br>show_real_perks<br>perk_add_mode<br>clear_selectable_perks<br>has_fake_perk<br>has_fake_trait<br>add_trait<br>remove_trait<br>seq_perk_freq | not implemented | - |
+| Virtual file system | fs_create<br>fs_copy<br>fs_find<br>fs_read/write_*<br>fs_delete<br>fs_size<br>fs_pos<br>fs_seek<br>fs_resize | 🚫 | Open an issue if you have a use case for these |
+| Combat / Knockback | set_weapon_knockback<br>set_target_knockback<br>set_attacker_knockback<br>remove_weapon_knockback<br>remove_target_knockback<br>remove_attacker_knockback | not implemented | - |
+| Maps and encounters | in_world_map<br>force_encounter<br>force_encounter_with_flags<br>set_map_time_multi<br>get/set_map_enter_position<br>exec_map_update_scripts<br>get/set_terrain_name<br>set_town_title<br>get/set_can_rest_on_map<br>set_rest_heal_time<br>set_rest_mode<br>set_worldmap_heal_time | implemented: in_world_map, force_encounter, force_encounter_with_flags, set_map_time_multi | - |
+| Maps and encounters / Worldmap | get_world_map_x/y_pos<br>set_world_map_pos | ✅ | - |
+| Audio | eax_available<br>set_eax_environment<br>play_sfall_sound<br>stop_sfall_sound | not implemented | *eax* opcodes will not be implemented |
+| Combat / Weapons and ammo | get/set_weapon_ammo_pid<br>get/set_weapon_ammo_count | ✅ | - |
+| Sfall / Version | sfall_ver_major<br>sfall_ver_minor<br>sfall_ver_build | ✅ | CE currently reports `4.3.4` |
+| Utility / Math | log, exponent, round, sqrt, abs, sin, cos, tan, arctan, ceil, ^, floor2, div | ✅ | - |
+| Keyboard and mouse | key_pressed<br>tap_key<br>get_mouse_x/y<br>get_mouse_buttons | ✅ | - |
+| Lists | list_begin<br>list_next<br>list_end<br>list_as_array<br>party_member_list | ✅ | - |
+| Explosions | metarule2_explosions<br>set_attack_explosion_pattern<br>set_attack_explosion_art<br>set_attack_explosion_radius<br>set_attack_is_explosion_fire<br>set_explosion_radius<br>set_dynamite_damage<br>set_plastic_damage<br>get_explosion_damage<br>set_explosion_max_targets<br>item_make_explosive | ✅ except item_make_explosive | - |
+| Animations | reg_anim_combat_check<br>reg_anim_destroy<br>reg_anim_animate_and_hide<br>reg_anim_light<br>reg_anim_change_fid<br>reg_anim_take_out<br>reg_anim_turn_towards<br>reg_anim_callback<br>reg_anim_animate_and_move | ✅ except reg_anim_callback | - |
+| Art and appearance | art_exists<br>refresh_pc_art<br>art_cache_clear<br>set_hero_race<br>set_hero_style | implemented: art_exists, refresh_pc_art, art_cache_clear | - |
+| Tiles and paths | get_tile_fid<br>tile_under_cursor<br>tile_light<br>tile_get_objs<br>tile_refresh_display<br>obj_blocking_tile<br>tile_by_position<br>get_tile_ground_fid<br>get_tile_roof_fid<br>obj_blocking_line<br>path_find_to<br>objects_in_radius | ✅ except objects_in_radius | - |
+| Utility | sprintf<br>typeof<br>atoi<br>atof | ✅ | - |
+| Utility / Strings | string_split<br>substr<br>strlen<br>charcode<br>get_string_pointer<br>string_find<br>string_find_from<br>string_format<br>string_format_array<br>string_replace<br>string_to_case<br>string_compare | ✅ except get_string_pointer | `get_string_pointer` is deprecated and intentionally omitted. |
+| Interface / Tags | show_iface_tag<br>hide_iface_tag<br>is_iface_tag_active<br>set_iface_tag_text<br>add_iface_tag | implemented: all except set_iface_tag_text, add_iface_tag | CE only handles built-in interface tags here; custom tag creation/text is not supported yet. |
+| Global variables | set_sfall_global<br>get_sfall_global_int<br>get_sfall_global_float | implemented: all except get_sfall_global_float | Current CE storage is int-backed; `set_sfall_global` stores integer values and there is no float getter yet. |
+| Hooks / Hook functions | init_hook<br>get_sfall_arg<br>get_sfall_args<br>get_sfall_arg_at<br>set_sfall_return<br>set_sfall_arg<br>register_hook<br>register_hook_proc<br>register_hook_proc_spec | ✅ except init_hook | See below for implemented hooks. `init_hook` is deprecated and will not be implemented. register_hook_proc and register_hook_proc_spec both add hooks to the *end* of the hook list, instead of beginning and end, respectively. |
+| Arrays / Array functions | create_array<br>temp_array<br>fix_array<br>get/set_array<br>resize_array<br>free_array<br>scan_array<br>len_array<br>save/load_array<br>array_key<br>arrayexpr | ✅ except save_array, load_array | - |
+| Perks and traits / NPC perks | set_fake_perk_npc<br>set_fake_trait_npc<br>set_selectable_perk_npc<br>has_fake_perk_npc<br>has_fake_trait_npc | not implemented | - |
+| Global scripts / Global script functions | set_global_script_repeat<br>set_global_script_type<br>available_global_script_types | implemented: all except available_global_script_types | - |
+| Combat | attack_is_aimed<br>block_combat<br>force_aimed_shots<br>disable_aimed_shots<br>get_attack_type<br>get/set_bodypart_hit_modifier<br>combat_data<br>get/set/reset_critical_table<br>get_last_target<br>get_last_attacker<br>set_critter_burst_disable<br>get/set_critter_current_ap<br>set_spray_settings<br>get/set_combat_free_move | implemented: only get_attack_type, get_bodypart_hit_modifier, combat_data, set_bodypart_hit_modifier | - |
+| Car | set_car_current_town<br>car_gas_amount<br>set_car_intface_art | implemented: all except set_car_intface_art | - |
+| Interface / Windows and images | art_frame_data<br>interface_art_draw<br>interface_print<br>draw_image<br>draw_image_scaled<br>get_window_under_mouse<br>create_win<br>get_window_attribute<br>message_box<br>set_window_flag<br>win_fill_color<br>interface_overlay<br>dialog_message<br>get_text_width<br>hide_window<br>show_window | implemented: only message_box, get_text_width, show_window | - |
+| Interface / Outline | outlined_object<br>get_outline<br>set_outline | implemented: all except get_outline | - |
+| Interface / Main interface | intface_is_hidden<br>intface_redraw<br>intface_hide<br>intface_show<br>set_quest_failure_value | implemented: only intface_redraw | `intface_redraw` only supports the zero-argument form; the optional-argument path is explicitly unimplemented. |
+| Interface / Inventory | display_stats<br>inventory_redraw<br>critter_inven_obj2<br>get_current_inven_size<br>item_weight | implemented: only critter_inven_obj2 | - |
+| Interface / Cursor | get/set_cursor_mode | ✅ | - |
+| Locks | lock_is_jammed<br>unjam_lock<br>set_unjam_locks_time | not implemented | - |
+| INI settings | modified_ini<br>get_ini_setting<br>get_ini_string<br>get_ini_section<br>get_ini_sections<br>get_ini_config<br>get_ini_config_db<br>set_ini_setting | ✅ except modified_ini, get_ini_config, get_ini_config_db | `modified_ini` is intentionally omitted as deprecated. |
+| Objects and scripts | set_self<br>set_dude_obj<br>real_dude_obj<br>remove_script<br>set_script<br>get_script<br>obj_is_carrying_obj<br>loot_obj<br>dialog_obj<br>obj_under_cursor<br>get_object_data<br>set_object_data<br>get_flags<br>set_flags<br>set_unique_id<br>set_scr_name<br>obj_is_openable<br>get/set_proto_data<br>get_object_ai_data | implemented: set_self, get_script, loot_obj, dialog_obj, obj_under_cursor, get_object_data, get_flags, set_flags, get_proto_data, set_proto_data | - |
+| Other / Game management | set_movie_path<br>stop_game<br>resume_game<br>mark_movie_played<br>game_loaded<br>get_game_mode<br>get_uptime<br>signal_close_game | implemented: game_loaded, get_game_mode, get_uptime | - |
+| Other | input_funcs_available<br>get_year<br>set_dm_model<br>set_df_model<br>set_pipboy_available<br>get_kill_counter<br>mod_kill_counter<br>active_hand<br>toggle_active_hand<br>set_pickpocket_max<br>set_hit_chance_max<br>set_xp_mod<br>set_critter_hit_chance_mod<br>set_base_hit_chance_mod<br>inc_npc_level<br>get_npc_level<br>get/set_viewport_x/y<br>set_hp_per_level_mod<br>get/set_unspent_ap_bonus<br>get/set_unspent_ap_perk_bonus<br>hero_select_win<br>create_message_window<br>get_light_level<br>gdialog_get_barter_mod<br>set_inven_ap_cost<br>set_base_pickpocket_mod<br>set_critter_pickpocket_mod<br>message_str_game<br>sneak_success<br>create_spatial<br>unwield_slot<br>get_inven_ap_cost<br>add_g_timer_event<br>add_extra_msg_file<br>get_metarule_table<br>metarule_exist<br>npc_engine_level_up<br>remove_timer_event<br>set_drugs_data<br>spatial_radius | implemented: get_year, active_hand, toggle_active_hand, create_message_window, message_str_game, add_extra_msg_file, metarule_exist | `input_funcs_available`, `nb_create_char` are deprecated in sfall and intentionally absent in CE. `add_extra_msg_file` does not support the explicit `fileNumber` form in CE. |
+
+## Hooks
+
+| Hook | ID | Compatibility | Notes |
+| --- | --- | --- | --- |
+| ToHit | `HOOK_TOHIT` | ✅ | - |
+| AfterHitRoll | `HOOK_AFTERHITROLL` | 🚫 | Et tu |
+| CalcAPCost | `HOOK_CALCAPCOST` | 🚫 | - |
+| DeathAnim1 | `HOOK_DEATHANIM1` | 🚫 | Use DEATHANIM2 instead |
+| DeathAnim2 | `HOOK_DEATHANIM2` | ✅ | - |
+| CombatDamage | `HOOK_COMBATDAMAGE` | ✅ | - |
+| OnDeath | `HOOK_ONDEATH` | 🚫 | - |
+| FindTarget | `HOOK_FINDTARGET` | 🚫 | (maybe) |
+| UseObjOn | `HOOK_USEOBJON` | ✅ | - |
+| UseObj | `HOOK_USEOBJ` | ✅ | CE notes an sfall-matching inconsistency around return code `2` behavior between interface contexts. |
+| RemoveInvenObj | `HOOK_REMOVEINVENOBJ` | 🚫 | - |
+| BarterPrice | `HOOK_BARTERPRICE` | ✅ | - |
+| MoveCost | `HOOK_MOVECOST` | 🚫 | - |
+| ItemDamage | `HOOK_ITEMDAMAGE` | 🚫 | - |
+| AmmoCost | `HOOK_AMMOCOST` | 🚫 | Et tu |
+| KeyPress | `HOOK_KEYPRESS` | ✅ | Third hook arg is currently `0`; CE doesn't use VK codes. |
+| MouseClick | `HOOK_MOUSECLICK` | 🚫 | - |
+| UseSkill | `HOOK_USESKILL` | 🚫 | - |
+| Steal | `HOOK_STEAL` | 🚫 | Et tu |
+| WithinPerception | `HOOK_WITHINPERCEPTION` | 🚫 | Et tu |
+| InventoryMove | `HOOK_INVENTORYMOVE` | ✅ | - |
+| InvenWield | `HOOK_INVENWIELD` | 🚫 | - |
+| AdjustFID | `HOOK_ADJUSTFID` | 🚫 | - |
+| CombatTurn | `HOOK_COMBATTURN` | 🚫 | - |
+| StdProcedure | `HOOK_STDPROCEDURE` | 🚫 | Et tu |
+| StdProcedureEnd | `HOOK_STDPROCEDURE_END` | 🚫 | - |
+| CarTravel | `HOOK_CARTRAVEL` | 🚫 | - |
+| SetGlobalVar | `HOOK_SETGLOBALVAR` | 🚫 | - |
+| RestTimer | `HOOK_RESTTIMER` | 🚫 | Et tu |
+| GameModeChange | `HOOK_GAMEMODECHANGE` | ✅ | - |
+| UseAnimObj | `HOOK_USEANIMOBJ` | 🚫 | Et tu; (maybe) |
+| ExplosiveTimer | `HOOK_EXPLOSIVETIMER` | 🚫 | - |
+| DescriptionObj | `HOOK_DESCRIPTIONOBJ` | 🚫 | Et tu |
+| UseSkillOn | `HOOK_USESKILLON` | 🚫 | Et tu |
+| OnExplosion | `HOOK_ONEXPLOSION` | 🚫 | (maybe) |
+| SubCombatDamage | `HOOK_SUBCOMBATDAMAGE` | 🚫 | (maybe) |
+| SetLighting | `HOOK_SETLIGHTING` | 🚫 | Et tu; (maybe) |
+| Sneak | `HOOK_SNEAK` | 🚫 | - |
+| TargetObject | `HOOK_TARGETOBJECT` | 🚫 | (maybe) |
+| Encounter | `HOOK_ENCOUNTER` | 🚫 | Et tu |
+| AdjustPoison | `HOOK_ADJUSTPOISON` | 🚫 | (maybe) |
+| AdjustRads | `HOOK_ADJUSTRADS` | 🚫 | (maybe) |
+| RollCheck | `HOOK_ROLLCHECK` | 🚫 | - |
+| BestWeapon | `HOOK_BESTWEAPON` | 🚫 | - |
+| CanUseWeapon | `HOOK_CANUSEWEAPON` | 🚫 | - |
+| BuildSfxWeapon | `HOOK_BUILDSFXWEAPON` | 🚫 | - |

files/ddraw.ini

@@ -197,11 +197,6 @@ NumbersInDialogue=0
 ;XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
 [Scripts]
 
-;Comma-separated list of masked paths to load global scripts from
-;Only use single backslash \ as the directory separator
-;Paths outside of scripts folder are supported
-;GlobalScriptPaths=scripts\gl_*.int,scripts\sfall\gl*.int
-
 ;Uncomment the option to specify an additional directory for ini files used by scripts
 ;The game will search for ini files first relative to this directory and then relative to the root directory if not found
 ;The path length is limited to 61 characters

os/android/app/src/main/java/com/alexbatalov/fallout2ce/FileUtils.java

@@ -13,18 +13,23 @@ import java.io.OutputStream;
 public class FileUtils {
 
     static boolean copyRecursively(ContentResolver contentResolver, DocumentFile src, File dest) {
+        if (dest == null || (!dest.exists() && !dest.mkdirs())) {
+            return false;
+        }
+
         final DocumentFile[] documentFiles = src.listFiles();
         for (final DocumentFile documentFile : documentFiles) {
+            final String name = documentFile.getName();
+            if (name == null || name.isEmpty()) {
+                return false;
+            }
+
             if (documentFile.isFile()) {
-                if (!copyFile(contentResolver, documentFile, new File(dest, documentFile.getName()))) {
+                if (!copyFile(contentResolver, documentFile, new File(dest, name))) {
                     return false;
                 }
             } else if (documentFile.isDirectory()) {
-                final File subdirectory = new File(dest, documentFile.getName());
-                if (!subdirectory.exists()) {
-                    subdirectory.mkdir();
-                }
-
+                final File subdirectory = new File(dest, name);
                 if (!copyRecursively(contentResolver, documentFile, subdirectory)) {
                     return false;
                 }
@@ -34,18 +39,22 @@ public class FileUtils {
     }
 
     private static boolean copyFile(ContentResolver contentResolver, DocumentFile src, File dest) {
-        try {
-            final InputStream inputStream = contentResolver.openInputStream(src.getUri());
-            final OutputStream outputStream = new FileOutputStream(dest);
+        final File parent = dest.getParentFile();
+        if (parent != null && !parent.exists() && !parent.mkdirs()) {
+            return false;
+        }
+
+        try (final InputStream inputStream = contentResolver.openInputStream(src.getUri());
+             final OutputStream outputStream = new FileOutputStream(dest)) {
+            if (inputStream == null) {
+                return false;
+            }
 
             final byte[] buffer = new byte[16384];
             int bytesRead;
             while ((bytesRead = inputStream.read(buffer)) != -1) {
                 outputStream.write(buffer, 0, bytesRead);
             }
-
-            inputStream.close();
-            outputStream.close();
         } catch (IOException e) {
             e.printStackTrace();
             return false;

os/android/app/src/main/java/com/alexbatalov/fallout2ce/ImportActivity.java

@@ -2,10 +2,12 @@ package com.alexbatalov.fallout2ce;
 
 import android.app.Activity;
 import android.app.ProgressDialog;
+import android.content.ActivityNotFoundException;
 import android.content.ContentResolver;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
+import android.widget.Toast;
 
 import androidx.documentfile.provider.DocumentFile;
 
@@ -17,18 +19,18 @@ public class ImportActivity extends Activity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
-        startActivityForResult(intent, IMPORT_REQUEST_CODE);
+        launchImportPicker();
     }
 
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent resultData) {
         if (requestCode == IMPORT_REQUEST_CODE) {
             if (resultCode == Activity.RESULT_OK) {
-                final Uri treeUri = resultData.getData();
+                final Uri treeUri = resultData != null ? resultData.getData() : null;
                 if (treeUri != null) {
+                    grantImportPermissions(treeUri, resultData);
                     final DocumentFile treeDocument = DocumentFile.fromTreeUri(this, treeUri);
-                    if (treeDocument != null) {
+                    if (treeDocument != null && treeDocument.isDirectory()) {
                         copyFiles(treeDocument);
                         return;
                     }
@@ -42,20 +44,59 @@ public class ImportActivity extends Activity {
     }
 
     private void copyFiles(DocumentFile treeDocument) {
-        ProgressDialog dialog = createProgressDialog();
+        final ProgressDialog dialog = createProgressDialog();
         dialog.show();
 
         new Thread(() -> {
-            ContentResolver contentResolver = getContentResolver();
-            File externalFilesDir = getExternalFilesDir(null);
-            FileUtils.copyRecursively(contentResolver, treeDocument, externalFilesDir);
+            final ContentResolver contentResolver = getContentResolver();
+            final File externalFilesDir = getExternalFilesDir(null);
+            final boolean success = externalFilesDir != null
+                && FileUtils.copyRecursively(contentResolver, treeDocument, externalFilesDir);
 
-            startMainActivity();
-            dialog.dismiss();
-            finish();
+            runOnUiThread(() -> {
+                dialog.dismiss();
+
+                if (success) {
+                    startMainActivity();
+                } else {
+                    Toast.makeText(this, R.string.import_failed, Toast.LENGTH_LONG).show();
+                }
+
+                finish();
+            });
         }).start();
     }
 
+    private void launchImportPicker() {
+        final Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
+        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION
+            | Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION
+            | Intent.FLAG_GRANT_PREFIX_URI_PERMISSION);
+
+        try {
+            startActivityForResult(intent, IMPORT_REQUEST_CODE);
+        } catch (ActivityNotFoundException e) {
+            Toast.makeText(this, R.string.import_picker_unavailable, Toast.LENGTH_LONG).show();
+            finish();
+        }
+    }
+
+    private void grantImportPermissions(Uri treeUri, Intent resultData) {
+        int flags = Intent.FLAG_GRANT_READ_URI_PERMISSION;
+        if (resultData != null) {
+            flags = resultData.getFlags()
+                & (Intent.FLAG_GRANT_READ_URI_PERMISSION
+                | Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+                | Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION);
+        }
+
+        try {
+            getContentResolver().takePersistableUriPermission(treeUri, flags);
+        } catch (SecurityException ignored) {
+            // Some providers do not offer persistable grants. One-shot access is enough for import.
+        }
+    }
+
     private void startMainActivity() {
         Intent intent = new Intent(this, MainActivity.class);
         startActivity(intent);

os/android/app/src/main/res/values/strings.xml

@@ -2,4 +2,6 @@
     <string name="app_name">Fallout 2</string>
     <string name="loading_dialog_title">PLEASE STAND BY</string>
     <string name="loading_dialog_message">Copying files…</string>
+    <string name="import_failed">Failed to import game files. Please pick a valid Fallout 2 folder and try again.</string>
+    <string name="import_picker_unavailable">No compatible folder picker is available on this device.</string>
 </resources>

sfall_testing/.gitignore

@@ -1 +1,2 @@
 *.int
+sfall

sfall_testing/README.md

@@ -30,22 +30,10 @@ compile.exe -q -p -l -O2 -d -s -n -I<sfall_headers_id> <script_name.ssl>
 
 - Install [VSCode Extension](https://marketplace.visualstudio.com/items?itemName=BGforge.bgforge-mls)
 
-
-
 ## Run test script
 
-1. Move compiled `.int` file into game folder as `data/scripts/gl_<script_name>.int`
+1. Move compiled `.int` file into game folder as `scripts/gl_<script_name>.int`
 
-2. Change `ddraw.ini` and add this section:
-```ini
-[Scripts]
-GlobalScriptPaths=data/scripts/gl*.int
-```
-
-(or add new path using comma as separator)
-
-Note that on non-Windows it have to be `/` as folder separator
-
-3. Run game, check that game displays message about tests
+2. Run game, check that game displays message about tests
 
 

sfall_testing/gl_refresh_pc_art.ssl

@@ -0,0 +1,56 @@
+#include "sfall.h"
+#include "dik.h"
+#include "define_lite.h"
+#include "define_extra.h"
+#include "test_utils.h"
+
+variable refresh_pc_art_test_done := false;
+
+procedure run_refresh_pc_art_test begin
+    variable old_gender := get_critter_stat(dude_obj, STAT_gender);
+    variable new_gender := 1 - old_gender;
+    variable dude_pid := obj_pid(dude_obj);
+    variable old_proto_fid := get_proto_data(dude_pid, PROTO_FID);
+
+    set_pc_base_stat(STAT_gender, new_gender);
+    call assertEquals("gender changes immediately", get_critter_stat(dude_obj, STAT_gender), new_gender);
+    call assertEquals("proto fid unchanged before refresh", get_proto_data(dude_pid, PROTO_FID), old_proto_fid);
+
+    refresh_pc_art;
+
+    variable refreshed_proto_fid := get_proto_data(dude_pid, PROTO_FID);
+    call assertNotEquals("refresh_pc_art updates dude proto fid", refreshed_proto_fid, old_proto_fid);
+
+    if (not critter_inven_obj(dude_obj, INVEN_TYPE_WORN)) then begin
+        call assertEquals("refresh_pc_art updates unarmored dude art", obj_art_fid(dude_obj) bwand 0xFFF, refreshed_proto_fid bwand 0xFFF);
+    end
+
+    set_pc_base_stat(STAT_gender, old_gender);
+    refresh_pc_art;
+    call assertEquals("refresh_pc_art restores original proto fid", get_proto_data(dude_pid, PROTO_FID), old_proto_fid);
+
+    refresh_pc_art_test_done := true;
+    call report_test_results("hook_refresh_pc_art");
+end
+
+procedure keypress_handler begin
+    variable pressed := get_sfall_arg_at(0);
+    variable key := get_sfall_arg_at(1);
+
+    if (not pressed) then return;
+    if (key != DIK_X) then return;
+
+    if (refresh_pc_art_test_done) then begin
+        display_msg("refresh_pc_art test already ran");
+        return;
+    end
+
+    call run_refresh_pc_art_test;
+end
+
+procedure start begin
+    if (not game_loaded) then return;
+
+    display_msg("refresh_pc_art test ready: press X");
+    register_hook_proc(HOOK_KEYPRESS, keypress_handler);
+end

sfall_testing/gl_test_add_extra_msg_file.ssl

@@ -0,0 +1,26 @@
+#include "test_utils.h"
+#include "sfall.h"
+
+// to test, copy test_extra_msg_file.msg into <game folder>/text/English/game/
+
+procedure start begin
+    variable auto_id;
+    variable duplicate_auto_id;
+
+    display_msg("Testing add_extra_msg_file...");
+
+    call assertEquals("metarule exists", metarule_exist("add_extra_msg_file"), 1);
+
+    auto_id := add_extra_msg_file("test_extra_msg_file.msg");
+    call assertNotEquals("auto id is not load error", auto_id, -2);
+    call assertTrue("auto id lower bound", auto_id >= 0x3000);
+    call assertTrue("auto id upper bound", auto_id <= 0x3FFF);
+    call assertEquals("auto message", message_str_game(auto_id, 100), "auto extra msg");
+
+    duplicate_auto_id := add_extra_msg_file("TEST_EXTRA_MSG_FILE.MSG");
+    call assertEquals("duplicate file returns existing id", duplicate_auto_id, auto_id);
+
+    call assertEquals("missing file", add_extra_msg_file("missing_extra_msg_file.msg"), -2);
+
+    call report_test_results("add_extra_msg_file");
+end

sfall_testing/gl_test_arrays.ssl

@@ -164,6 +164,12 @@ procedure array_test_suite begin
    call assertEquals("saved arrays 3", len_array(list_saved_arrays), len_array(arr2) - 1);
    */
 
+   display_msg("Testing nested expressions...");
+   arr := [["one", "two"]];
+   call assertEquals("nested 1", arr[0][1], "two");
+   arr := [["one", "two"], {"three": ["four", -1]}];
+   call assertEquals("nested 2", arr[1].three[0], "four");
+
    display_msg("All tests finished with "+test_suite_errors+" errors.");
 
    call report_test_results("arrays");

sfall_testing/gl_test_ini.ssl

@@ -9,9 +9,10 @@ procedure ini_test_suite begin
 
     // Test Case 1: Valid file, valid section
     result_array := get_ini_section("test.ini", "ValidSection");
-    expected_array := {"Key1": "Value1", "Key2": "2"};
-    call assertEquals("TC1 Size", len_array(result_array), 2);
-    call assertEquals("TC1 Content", arrays_equal(result_array, expected_array), true);
+    call assertEquals("TC1 Size", len_array(result_array), 3);
+    call assertEquals("TC1 Key1", result_array["Key1"], "Value1");
+    call assertEquals("TC1 Key2", result_array["Key2"], "2");
+    call assertEquals("TC1 EmptyValue", result_array["EmptyValue"], "");
     count := 0;
     foreach key_val_pair in result_array begin
         count += 1;
@@ -25,19 +26,22 @@ procedure ini_test_suite begin
     call assertEquals("TC2 get_ini_string string", get_ini_string("test.ini|ValidSection|Key1"), "Value1");
     call assertEquals("TC2 get_ini_setting int", get_ini_setting("test.ini|ValidSection|Key2"), 2);
     call assertEquals("TC2 get_ini_string int", get_ini_string("test.ini|ValidSection|Key2"), "2");
+    call assertEquals("TC2 get_ini_setting empty int", get_ini_setting("test.ini|ValidSection|EmptyValue"), 0);
+    call assertEquals("TC2 get_ini_string empty string", get_ini_string("test.ini|ValidSection|EmptyValue"), "");
 
     // INI file not found
     result_array := get_ini_section("nonexistent.ini", "AnySection");
     call assertEquals("TC3 Size", len_array(result_array), 0);
     call assertEquals("TC3 Is Map", array_key(result_array, -1), 1); // Should still be an associative array
-    call assertEquals("TC3 get_ini_setting", get_ini_setting("notexist.ini|ValidSection|Key2"), 0);
+    call assertEquals("TC3 get_ini_setting missing file", get_ini_setting("notexist.ini|ValidSection|Key2"), -1);
+    call assertEquals("TC3 get_ini_setting missing key", get_ini_setting("test.ini|ValidSection|MissingKey"), -1);
     call assertEquals("TC3 get_ini_string", get_ini_string("notexist.ini|ValidSection|Key2"), "");
 
     // Valid file, section not found
     result_array := get_ini_section("test.ini", "NonExistentSection");
     call assertEquals("TC4 Size", len_array(result_array), 0);
     call assertEquals("TC4 Is Map", array_key(result_array, -1), 1);
-    call assertEquals("TC4 get_ini_setting", get_ini_setting("test.ini|NonExistentSection|Key2"), 0);
+    call assertEquals("TC4 get_ini_setting", get_ini_setting("test.ini|NonExistentSection|Key2"), -1);
     call assertEquals("TC4 get_ini_string", get_ini_string("test.ini|NonExistentSection|Key2"), "");
 
 
@@ -45,7 +49,7 @@ procedure ini_test_suite begin
     result_array := get_ini_section("test.ini", "EmptySection");
     call assertEquals("TC5 Size", len_array(result_array), 0);
     call assertEquals("TC5 Is Map", array_key(result_array, -1), 1);
-    call assertEquals("TC5 get_ini_setting", get_ini_setting("test.ini|EmptySection|Key2"), 0);
+    call assertEquals("TC5 get_ini_setting", get_ini_setting("test.ini|EmptySection|Key2"), -1);
     call assertEquals("TC5 get_ini_string", get_ini_string("test.ini|EmptySection|Key2"), "");
 
     // set ini setting

sfall_testing/gl_test_reg_anim_combat_check.ssl

@@ -0,0 +1,234 @@
+#include "sfall.h"
+#include "dik.h"
+#include "command_lite.h"
+#include "define_extra.h"
+#include "test_utils.h"
+
+#define REG_ANIM_BEGIN 1
+#define REG_ANIM_END 3
+#define ANIMATION_REQUEST_UNRESERVED 1
+#define TEST_ITEM_PID 40
+#define TEST_FID_SOURCE_PID 76
+#define TEST_LIGHT_VALUE 0x12340002
+#define TEST_TAKE_OUT_FRAME WPN_ANIM_PISTOL
+#define TEST_STAND_ANIM 0
+#define TEST_WALK_ANIM 1
+
+#define reg_anim_begin() reg_anim_func(REG_ANIM_BEGIN, ANIMATION_REQUEST_UNRESERVED)
+#define reg_anim_end() reg_anim_func(REG_ANIM_END, 0)
+
+variable hook_registered := false;
+variable pending_test := 0;
+variable pending_frames := 0;
+
+variable test_move_critter_obj := 0;
+variable test_takeout_critter_obj := 0;
+variable test_light_obj := 0;
+variable test_fid_obj := 0;
+variable test_fid_source_obj := 0;
+variable test_hide_obj := 0;
+variable test_destroy_obj := 0;
+
+variable expected_turn_tile := 0;
+variable expected_move_tile := 0;
+variable initial_rotation := 0;
+variable initial_tile := 0;
+variable initial_fid := 0;
+variable expected_fid := 0;
+variable initial_hide_visibility := 0;
+variable initial_destroy_visibility := 0;
+variable test_objects_ready := false;
+variable pending_timeout_frames := 0;
+variable noncombat_test_completed := false;
+
+// Manual checks:
+// X:
+// - No registered animation should run in combat.
+// - The temp critters should not move or draw a weapon.
+// V:
+// - `reg_anim_combat_check(0)` should allow the registered animations in combat.
+// N:
+// - Outside combat, the full opcode surface should run and be checked.
+
+procedure setup_test_objects begin
+    variable elev := elevation(dude_obj);
+
+    test_move_critter_obj := create_object_sid(obj_pid(dude_obj), tile_num_in_direction(dude_tile, dude_cur_rot, 3), elev, -1);
+    test_takeout_critter_obj := create_object_sid(obj_pid(dude_obj), tile_num_in_direction(dude_tile, (dude_cur_rot + 1) % 6, 3), elev, -1);
+    test_light_obj := create_object_sid(TEST_ITEM_PID, tile_num_in_direction(dude_tile, (dude_cur_rot + 2) % 6, 4), elev, -1);
+    test_fid_obj := create_object_sid(TEST_ITEM_PID, tile_num_in_direction(dude_tile, (dude_cur_rot + 3) % 6, 4), elev, -1);
+    test_fid_source_obj := create_object_sid(TEST_FID_SOURCE_PID, tile_num_in_direction(dude_tile, (dude_cur_rot + 4) % 6, 4), elev, -1);
+    test_hide_obj := create_object_sid(TEST_ITEM_PID, tile_num_in_direction(dude_tile, (dude_cur_rot + 5) % 6, 4), elev, -1);
+    test_destroy_obj := create_object_sid(TEST_ITEM_PID, tile_num_in_direction(dude_tile, dude_cur_rot, 5), elev, -1);
+
+    initial_rotation := obj_get_rot(test_move_critter_obj);
+    initial_tile := tile_num(test_move_critter_obj);
+    expected_turn_tile := tile_num_in_direction(initial_tile, (initial_rotation + 3) % 6, 1);
+    expected_move_tile := tile_num_in_direction(initial_tile, initial_rotation, 1);
+    initial_fid := get_object_data(test_fid_obj, OBJ_DATA_FID);
+    expected_fid := get_object_data(test_fid_source_obj, OBJ_DATA_FID);
+    initial_hide_visibility := obj_is_visible_flag(test_hide_obj);
+    initial_destroy_visibility := obj_is_visible_flag(test_destroy_obj);
+    pending_frames := 0;
+    test_objects_ready := true;
+end
+
+procedure ensure_test_objects begin
+    if (test_objects_ready) then return;
+    call setup_test_objects();
+end
+
+procedure queue_full_sequence begin
+    reg_anim_begin();
+    reg_anim_turn_towards(test_move_critter_obj, expected_turn_tile, -1);
+    reg_anim_take_out(test_takeout_critter_obj, TEST_TAKE_OUT_FRAME, -1);
+    reg_anim_light(test_light_obj, TEST_LIGHT_VALUE, -1);
+    reg_anim_change_fid(test_fid_obj, expected_fid, -1);
+    reg_anim_animate_and_hide(test_hide_obj, TEST_STAND_ANIM, -1);
+    reg_anim_destroy(test_destroy_obj);
+    reg_anim_animate_and_move(test_move_critter_obj, expected_move_tile, TEST_WALK_ANIM, -1);
+    reg_anim_end();
+end
+
+procedure start_blocked_test begin
+    pending_test := 1;
+    pending_timeout_frames := 30;
+    call ensure_test_objects();
+    call queue_full_sequence();
+    display_msg("Started blocked-case test.");
+end
+
+procedure start_enabled_test begin
+    pending_test := 2;
+    pending_timeout_frames := 120;
+    call ensure_test_objects();
+    reg_anim_combat_check(0);
+    call queue_full_sequence();
+    display_msg("Started enabled-case test.");
+end
+
+procedure start_noncombat_test begin
+    pending_test := 3;
+    pending_timeout_frames := 120;
+    call ensure_test_objects();
+    call queue_full_sequence();
+    display_msg("Started non-combat opcode test.");
+end
+
+procedure keypress_handler begin
+    variable
+        pressed := get_sfall_arg_at(0),
+        key := get_sfall_arg_at(1);
+
+    if (not pressed) then return;
+
+    if (pending_test != 0) then begin
+        if (key == DIK_X or key == DIK_V or key == DIK_N) then
+            display_msg("A reg_anim_combat_check test is already running.");
+        return;
+    end
+
+    if (combat_data and key == DIK_X) then begin
+        display_msg("X: combat should block all reg_anim calls in this sequence.");
+        call start_blocked_test();
+    end else if (combat_data and key == DIK_V) then begin
+        display_msg("V: reg_anim_combat_check(0) should allow the registered animations in combat.");
+        call start_enabled_test();
+    end else if ((not combat_data) and key == DIK_N) then begin
+        if (noncombat_test_completed) then begin
+            display_msg("N already ran once. Reload the map or game before running it again.");
+            return;
+        end
+        display_msg("N: outside combat, the full reg_anim opcode sequence should run.");
+        call start_noncombat_test();
+    end else if (key == DIK_X or key == DIK_V) then begin
+        display_msg("Enter combat before running X or V.");
+    end else if (key == DIK_N) then begin
+        display_msg("Leave combat before running N.");
+    end
+end
+
+procedure report_blocked_results begin
+    variable errors_before := test_suite_errors;
+
+    call assertEquals("turn_towards blocked", obj_get_rot(test_move_critter_obj), initial_rotation);
+    call assertEquals("animate_and_move blocked", tile_num(test_move_critter_obj), initial_tile);
+    call assertEquals("change_fid blocked", get_object_data(test_fid_obj, OBJ_DATA_FID), initial_fid);
+    call assertEquals("animate_and_hide blocked", obj_is_visible_flag(test_hide_obj), initial_hide_visibility);
+    call assertEquals("destroy blocked", obj_is_visible_flag(test_destroy_obj), initial_destroy_visibility);
+
+    if (test_suite_errors == errors_before) then
+        display_msg("PASS blocked automatic checks");
+    else
+        display_msg("FAIL blocked automatic checks");
+
+    call report_test_results("reg_anim_combat_check_blocked");
+end
+
+procedure report_enabled_results begin
+    variable errors_before := test_suite_errors;
+
+    call assertNotEquals("turn_towards runs in combat when enabled", obj_get_rot(test_move_critter_obj), initial_rotation);
+    call assertEquals("animate_and_move runs in combat when enabled", tile_num(test_move_critter_obj), expected_move_tile);
+    call assertEquals("change_fid runs in combat when enabled", get_object_data(test_fid_obj, OBJ_DATA_FID), expected_fid);
+
+    if (test_suite_errors == errors_before) then
+        display_msg("PASS enabled automatic checks");
+    else
+        display_msg("FAIL enabled automatic checks");
+
+    call report_test_results("reg_anim_combat_check_enabled");
+end
+
+procedure report_noncombat_results begin
+    variable errors_before := test_suite_errors;
+
+    noncombat_test_completed := true;
+
+    call assertNotEquals("turn_towards outside combat", obj_get_rot(test_move_critter_obj), initial_rotation);
+    call assertEquals("animate_and_move outside combat", tile_num(test_move_critter_obj), expected_move_tile);
+    call assertEquals("change_fid outside combat", get_object_data(test_fid_obj, OBJ_DATA_FID), expected_fid);
+    call assertEquals("animate_and_hide outside combat", obj_is_visible_flag(test_hide_obj), 0);
+
+    if (test_suite_errors == errors_before) then
+        display_msg("PASS non-combat automatic checks");
+    else
+        display_msg("FAIL non-combat automatic checks");
+
+    call report_test_results("reg_anim_full_noncombat");
+    display_msg("Manual check: outside combat, the other clone should play take out, light should visibly apply if supported by the object type, and destroy_obj should be gone.");
+end
+
+procedure poll_pending_test begin
+    if (pending_test == 0) then return;
+
+    pending_frames += 1;
+
+    if (pending_frames < pending_timeout_frames) then return;
+
+    variable current_test := pending_test;
+    pending_test := 0;
+    pending_frames := 0;
+    pending_timeout_frames := 0;
+
+    if (current_test == 1) then begin
+        call report_blocked_results();
+    end else if (current_test == 2) then begin
+        call report_enabled_results();
+    end else if (current_test == 3) then begin
+        call report_noncombat_results();
+    end
+end
+
+procedure start begin
+    set_global_script_repeat(1);
+
+    if (not hook_registered and game_loaded) then begin
+        hook_registered := true;
+        call ensure_test_objects();
+        register_hook_proc(HOOK_KEYPRESS, keypress_handler);
+        display_msg("reg_anim_combat_check test loaded. Enter combat for X/V, or stay out of combat for N (one-shot).");
+    end
+
+    call poll_pending_test();
+end

sfall_testing/gl_test_tile_path.ssl

@@ -0,0 +1,78 @@
+#include "sfall.h"
+#include "test_utils.h"
+
+variable blocker_obj := 0;
+
+procedure cleanup begin
+    if (blocker_obj) then begin
+        destroy_object(blocker_obj);
+        blocker_obj := 0;
+    end
+end
+
+procedure start begin
+    variable elev := elevation(dude_obj);
+    variable dude_tile := tile_num(dude_obj);
+    variable dir;
+    variable step_tile := -1;
+    variable step_dir := -1;
+    variable block_tile := -1;
+    variable path;
+    variable objs;
+    variable ground_fid;
+    variable roof_fid;
+
+    display_msg("Testing tile/path functions...");
+    call cleanup();
+
+    for (dir := 0; dir < 6; dir += 1) begin
+        variable candidate := tile_num_in_direction(dude_tile, dir, 1);
+        if (candidate != dude_tile and obj_blocking_tile(candidate, elev, BLOCKING_TYPE_BLOCK) == 0) then begin
+            if (step_tile == -1) then begin
+                step_tile := candidate;
+                step_dir := dir;
+            end
+
+            if (block_tile == -1 and candidate != step_tile) then begin
+                block_tile := candidate;
+            end
+        end
+    end
+
+    call assertNotEquals("found reachable neighboring tile", step_tile, -1);
+    if (step_tile != -1) then begin
+        path := path_find_to(dude_obj, step_tile, BLOCKING_TYPE_BLOCK);
+        call assertEquals("one-step path length", len_array(path), 1);
+        if (len_array(path) == 1) then
+            call assertEquals("one-step path direction", get_array(path, 0), step_dir);
+    end
+
+    if (block_tile != -1) then begin
+        blocker_obj := create_object_sid(obj_pid(dude_obj), block_tile, elev, -1);
+        call assertNotEquals("spawned blocking critter", blocker_obj, 0);
+        if (blocker_obj) then begin
+            path := path_find_to(dude_obj, tile_num(blocker_obj), BLOCKING_TYPE_BLOCK);
+            call assertEquals("occupied destination returns empty path", len_array(path), 0);
+        end
+    end else begin
+        display_msg("Skipping occupied-destination path check: no free adjacent tile for blocker.");
+    end
+
+    objs := tile_get_objs(dude_tile, elev);
+    call assertTrue("tile_get_objs contains dude", scan_array(objs, dude_obj) != -1);
+
+    ground_fid := get_tile_ground_fid(dude_tile, elev);
+    roof_fid := get_tile_roof_fid(dude_tile, elev);
+    call assertTrue("ground fid is non-negative", ground_fid >= 0);
+    call assertTrue("roof fid is non-negative", roof_fid >= 0);
+    call assertEquals("ground helper matches ext", ground_fid, get_tile_fid_ext(dude_tile, elev, 0));
+    call assertEquals("roof helper matches ext", roof_fid, get_tile_fid_ext(dude_tile, elev, 1));
+
+    call assertTrue("tile_light returns non-negative intensity", tile_light(elev, dude_tile) >= 0);
+    call assertEquals("tile_by_position metarule exists", metarule_exist("tile_by_position"), 1);
+    call assertEquals("tile_by_position matches tile_under_cursor", tile_by_position(get_mouse_x, get_mouse_y), tile_under_cursor);
+
+    tile_refresh_display;
+    call cleanup();
+    call report_test_results("tile_path");
+end

sfall_testing/hooks/gl_hook_test.ssl

@@ -0,0 +1,166 @@
+#include "../sfall/sfall.h"
+#include "../sfall/dik.h"
+#include "../sfall/define_lite.h"
+#include "../test_utils.h"
+
+#include "../sfall/lib.arrays.h"
+
+variable last_game_mode;
+variable gamemodechange_assertions_enabled := false;
+variable gamemodechange_reported := false;
+
+procedure test_with_args(variable arg1) begin
+    display_msg("test_w_arg" + arg1);
+end
+
+procedure test_wo_args begin
+    display_msg("test_wo_args");
+end
+
+procedure tohit_handler begin
+    variable
+        attacker := get_sfall_arg_at(1),
+        target := get_sfall_arg_at(2),
+        chanceRaw := get_sfall_arg_at(7);
+
+    display_msg(string_format("tohit %s -> %s (%d)", obj_name(attacker), obj_name(target), chanceRaw));
+    if (attacker == dude_obj) then
+        set_sfall_return(100);
+    else if (target == dude_obj) then
+        set_sfall_return(0);
+
+end
+
+procedure useobj_handler begin
+    variable
+        user := get_sfall_arg,
+        item := get_sfall_arg;
+
+    display_msg(string_format("useobj %s (%s)", obj_name(user), obj_name(item)));
+    set_sfall_return(2);
+end
+
+procedure useobjon_handler begin
+    variable args := get_sfall_args,
+        target := args[0],
+        user := args[1],
+        item := args[2];
+
+    display_msg(string_format("useobjon %s (%s) -> %s [len: %d]", obj_name(user), obj_name(item), obj_name(target), len_array(args)));
+    set_sfall_return(0);
+end
+
+procedure keypress_handler begin
+    variable
+        pressed := get_sfall_arg_at(0),
+        key := get_sfall_arg_at(1);
+
+    display_msg(string_format("keypress %d dx: %d", pressed, key));
+
+    if (not pressed) then return;
+
+    if (key == DIK_F2) then begin
+        display_msg(string_format("tile %d, elev %d, map %d", tile_under_cursor, elevation(dude_obj), cur_map_index));
+    end if (key == DIK_F3) then begin
+        if (key_pressed(DIK_LCONTROL)) then begin
+            variable cr := obj_under_cursor(true, false);
+            if (cr) then
+                critter_dmg(cr, 1000, DMG_BYPASS_ARMOR);
+        end else
+            move_to(dude_obj, tile_under_cursor, elevation(dude_obj));
+    end
+end
+
+procedure gamemodechange_handler begin
+    variable
+        event_type := get_sfall_arg_at(0),
+        previous_mode := get_sfall_arg_at(1),
+        current_mode := get_game_mode;
+
+    display_msg(string_format("gamemodechange event=%d prev=%d cur=%d", event_type, previous_mode, current_mode));
+
+    if (not gamemodechange_assertions_enabled) then begin
+        last_game_mode := current_mode;
+        return;
+    end
+
+    call assertTrue("gamemodechange event_type is 0 or 1", event_type == 0 or event_type == 1);
+    call assertEquals("gamemodechange previous mode", previous_mode, last_game_mode);
+    if (event_type == 0) then
+        call assertNotEquals("gamemodechange mode changed", current_mode, previous_mode);
+    else if (not gamemodechange_reported) then begin
+        gamemodechange_reported := true;
+        call report_test_results("hook_gamemodechange");
+    end
+
+    last_game_mode := current_mode;
+end
+
+procedure combatdamage_handler begin
+    variable args := get_sfall_args;
+    
+    display_msg(sprintf("combatdamage %s", debug_array_str(args)));
+
+    set_sfall_return(10); // target dmg
+    set_sfall_return(5);
+    set_sfall_return(0);
+    set_sfall_return(DAM_HIT); // attacker flag
+    set_sfall_return(10); // knockback
+end
+
+
+procedure barterprice_handler begin
+    variable
+        args := get_sfall_args,
+        value := args[2],
+        caps := args[4],
+        offerValue := args[7],
+        offerTable := args[6],
+        offerCaps := item_caps_total(offerTable);
+    
+    display_msg(sprintf("barterprice %s", debug_array_str(args)));
+
+    set_sfall_return((value - caps) * 2 + caps);
+    set_sfall_return((offerValue - offerCaps) / 2 + offerCaps);
+end
+
+#define ANIM_fall_back               (20)
+#define ANIM_fall_front              (21)
+#define ANIM_fire_dance              (33)
+
+procedure deathanim_handler begin
+    variable
+        args := get_sfall_args;
+    
+    display_msg(sprintf("deathanim %s", debug_array_str(args)));
+
+    set_sfall_return(ANIM_fire_dance);
+end
+
+procedure start begin
+    //call test_with_args(777);
+    display_msg("start hook test");
+
+    if (not game_loaded) then return;
+
+    add_obj_to_inven(dude_obj, create_object_sid(40, 0, 0, -1));
+    add_obj_to_inven(dude_obj, create_object_sid(76, 0, 0, -1));
+    add_obj_to_inven(dude_obj, create_object_sid(85, 0, 0, -1));
+
+    last_game_mode := get_game_mode;
+    gamemodechange_assertions_enabled := true;
+
+    register_hook_proc(HOOK_KEYPRESS, keypress_handler);
+    register_hook_proc(HOOK_TOHIT, tohit_handler);
+    register_hook_proc(HOOK_USEOBJ, useobj_handler);
+    register_hook_proc(HOOK_USEOBJON, useobjon_handler);
+    register_hook_proc(HOOK_GAMEMODECHANGE, gamemodechange_handler);
+    register_hook_proc(HOOK_COMBATDAMAGE, combatdamage_handler);
+    register_hook_proc(HOOK_BARTERPRICE, barterprice_handler);
+    register_hook_proc(HOOK_DEATHANIM2, deathanim_handler);
+end
+
+
+procedure map_enter_p_proc begin
+    display_msg("Map Enter hook test");
+end

sfall_testing/hooks/gl_inventorymove.ssl

@@ -0,0 +1,57 @@
+#include "sfall.h"
+#include "dik.h"
+#include "lib.arrays.h"
+
+variable inventorymove_blocking := false;
+
+procedure inventorymove_handler begin
+    variable
+        args := get_sfall_args,
+        action := args[0],
+        item := args[1],
+        arg2 := args[2],
+        action_name := "unknown";
+
+    if (action == 0) then action_name := "main_backpack";
+    else if (action == 1) then action_name := "left_hand";
+    else if (action == 2) then action_name := "right_hand";
+    else if (action == 3) then action_name := "armor_slot";
+    else if (action == 4) then action_name := "weapon_reload";
+    else if (action == 5) then action_name := "container";
+    else if (action == 6) then action_name := "ground";
+    else if (action == 7) then action_name := "pickup";
+    else if (action == 8) then action_name := "character_portrait";
+
+    display_msg(string_format2("inventorymove %s args=%s", action_name, debug_array_str(args)));
+    if (item) then
+        display_msg(string_format2("inventorymove item=%s pid=%d", obj_name(item), obj_pid(item)));
+    if (arg2) then
+        display_msg(string_format2("inventorymove arg2=%s pid=%d", obj_name(arg2), obj_pid(arg2)));
+    display_msg(string_format1("inventorymove blocking=%d", inventorymove_blocking));
+
+    if (inventorymove_blocking) then begin
+        display_msg("inventorymove blocked");
+        set_sfall_return(0);
+    end
+end
+
+procedure keypress_handler begin
+    variable
+        pressed := get_sfall_arg_at(0),
+        key := get_sfall_arg_at(1);
+
+    if (not pressed) then return;
+    if (key != DIK_X) then return;
+
+    inventorymove_blocking := not inventorymove_blocking;
+    display_msg(string_format1("inventorymove blocking %d", inventorymove_blocking));
+end
+
+procedure start begin
+    if (not game_loaded) then return;
+
+    display_msg("inventorymove manual test ready: press X to toggle blocking");
+
+    register_hook_proc(HOOK_KEYPRESS, keypress_handler);
+    register_hook_proc(HOOK_INVENTORYMOVE, inventorymove_handler);
+end