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, 40 insertions, 0 deletions

diff --git a/scripts/build.sh b/scripts/build.sh
new file mode 100755
index 0000000..6027e75
--- /dev/null
+++ b/scripts/build.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+# Build and run the Forts Clone inside a podman container.
+# Usage: ./scripts/build.sh [--shell]
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
+IMAGE_NAME="forts-clone-dev"
+
+cd "$PROJECT_DIR"
+
+# Build container image (cached)
+echo "==> Building container image..."
+podman build -t "$IMAGE_NAME" .
+
+if [ "${1:-}" = "--shell" ]; then
+    echo "==> Starting shell in container..."
+    exec podman run -it --rm \
+        -v "$PROJECT_DIR":/src:Z \
+        --userns=keep-id \
+        "$IMAGE_NAME" \
+        bash
+else
+    echo "==> Configuring and building..."
+    podman run -it --rm \
+        -v "$PROJECT_DIR":/src:Z \
+        --userns=keep-id \
+        "$IMAGE_NAME" \
+        bash -c "
+            meson setup builddir \
+                --buildtype=debugoptimized \
+                -Dwarning_level=3 \
+                -Dcpp_std=c++20 \
+                --wipe
+            meson compile -C builddir -j$(nproc)
+        "
+    echo
+    echo "==> Build complete. Run with: ./builddir/forts-clone"
+fi