Initial import: LibreForts (M0-M5 in progress)

Open-source Forts clone: custom C++20 engine + data-driven (Lua) 2D physics
artillery RTS.

- Building: node/strut graph on a stiff mass-spring solver (canon Forts model),
  triangulation rigidity, axial + 30-degree angle-stress breaking, cascading
  collapse, fire (DoT + spread), ground destroys debris.
- Weapons (M4): cannon (ballistic) + laser (beam/ignite) with select-and-aim-in-
  arc UX; splash / beam damage; bg-brace passthrough.
- Devices + economy (M5): reactors + win/loss + restart, mines/turbines/battery,
  metal deposits, storage caps, per-shot energy cost.
- Data-driven via Lua/sol2 with a layered mod loader; enemy-fort scenario mod.
- Renderer: SDL3 + textures + ImGui dev UI. stb_image + ImGui vendored.
- Assets: CC0 placeholders only; real game art loaded at runtime from the user's
  own install via forts: paths (bring-your-own; nothing copyrighted committed).

See README.md / CLAUDE.md and research/ + requirements/ for detail.

1 files changed, 21 insertions, 0 deletions

diff --git a/src/engine/script.hpp b/src/engine/script.hpp
new file mode 100644
index 0000000..8008ded
--- /dev/null
+++ b/src/engine/script.hpp
@@ -0,0 +1,21 @@
+#pragma once
+
+#include <sol/sol.hpp>
+#include <string>
+
+// Thin wrapper around a sol2 Lua state. This is the engine's scripting seam:
+// data files (materials, later weapons/devices) are Lua, loaded on top of each
+// other so mods can extend or override the base tables.
+class ScriptEngine {
+public:
+    ScriptEngine();
+
+    sol::state& lua() { return lua_; }
+
+    // Run a Lua file in the shared state. Returns false and logs on error
+    // (errors are caught, never thrown out, so a bad mod can't crash the game).
+    bool run_file(const std::string& path);
+
+private:
+    sol::state lua_;
+};