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feat: Replace libtcod with libtcod-headless fork (closes #134)

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Replace upstream libtcod with jmccardle/libtcod-headless fork that:
- Builds without SDL dependency (NO_SDL compile flag)
- Uses vendored dependencies (lodepng, utf8proc, stb)
- Provides all core algorithms (FOV, pathfinding, BSP, noise)

Changes:
- Update .gitmodules to use libtcod-headless (2.2.1-headless branch)
- Add NO_SDL compile definition to CMakeLists.txt
- Remove old libtcod submodule

Build instructions: deps/libtcod symlink should point to
modules/libtcod-headless/src/libtcod (configured during build setup)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
John McCardle 2025-11-26 11:22:48 -05:00
commit 8854d5b366
4 changed files with 8 additions and 4 deletions
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modules/libtcod

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Subproject commit 34ae258a863c4f6446effee28ca8ecae51b1519f

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modules/libtcod-headless Submodule

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Subproject commit 3b4b65dc9aae7d21a98d3578e3e9433728b118bb