Filepaths

[PieterVdc]

for files that can be overridden by mods,
add a new prepare_file_fmtpath_prio, functions similar to the base prepare_file_fmtpath but will return the highest existing priority version of said file so no more mod specific logic needed for each file other than calling this one instead,

atm just files that get overriden completely, partial loaded files not covered here yet

[Copilot]

Pull request overview

Adds a new priority-based filepath resolver intended to simplify “mod/campaign override” lookups by centralizing selection logic, then starts migrating a couple of asset loaders to use it.

Changes:

• Introduces src/filepaths.cpp/.h with a file-map-based “highest priority existing file” lookup API.
• Switches swipe sprite loading and texture-map loading to use prepare_file_fmtpath_prio(...) instead of per-file mod/campaign fallback logic.
• Adjusts file group enums / resolution cases and updates build objects to include the new module.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 12 comments.

Show a summary per file

File	Description
src/thing_creature.c	Uses the new priority-based path formatter for swipe sprite sheets.
src/filepaths.h	Declares the new file-map builder + priority-based path APIs.
src/filepaths.cpp	Implements file scanning, priority selection, and the new path APIs.
src/engine_textures.c	Replaces bespoke mod-search logic with the new priority-based resolver.
src/config.h	Updates TbFileGroups (removes old groups, adds FGrp_Mods).
src/config.c	Removes resolver cases for deleted file groups.
src/config_mods.c	Switches mods-order config lookup to FGrp_Mods.
Makefile	Adds filepaths object to the build.

Suppressed comments (1)

src/filepaths.cpp:140

• These loops call load_dirs() with too many arguments and also pass an incorrect directory path (missing MODS_DIR_NAME, and &name is wrong). This will not compile and won’t scan mod directories correctly.

    for (int i = 0; i < mods_conf.after_campaign_cnt; i++)
        load_dirs(&mods_conf.after_campaign_item[i].name, FP_Mod_after_campaign, FP_Mod_after_campaign);
    for (int i = 0; i < mods_conf.after_map_cnt; i++)
        load_dirs(&mods_conf.after_map_item[i].name, FP_Mod_after_map, FP_Mod_after_map);

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