From cd0c08dc7ce754473178ad3f32f7740a1dddc1eb Mon Sep 17 00:00:00 2001
From: Vaino Kauppila <vaino@vke.fi>
Date: Thu, 2 Jul 2026 22:58:25 +0300
Subject: 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.
---
 data/structures.lua | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 data/structures.lua

(limited to 'data/structures.lua')

diff --git a/data/structures.lua b/data/structures.lua
new file mode 100644
index 0000000..f7d88f2
--- /dev/null
+++ b/data/structures.lua
@@ -0,0 +1,5 @@
+-- Base scenario structures. Empty by default; mods under data/mods/ append to
+-- the global `Structures` list. Each structure is:
+--   { name = "...", beams = { {x1,y1,x2,y2,material}, ... } }
+-- The loader creates/merges nodes at the endpoints and welds the beams.
+Structures = Structures or {}
-- 
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