18 files changed, 224 insertions, 0 deletions
diff --git a/data/devices.lua b/data/devices.lua
new file mode 100644
index 0000000..e5309dc
--- /dev/null
+++ b/data/devices.lua
@@ -0,0 +1,48 @@
+-- Device catalog (reactor / mine / turbine / battery). Values scaled from Forts'
+-- devices/*.lua. `texture` may use a "forts:REL" path to load real art from your
+-- own Forts install at runtime (nothing copyrighted is stored in the repo); if
+-- the game isn't present it falls back to the flat `color`.
+
+DeviceDefs =
+{
+    {
+        name = "reactor", is_core = true,     -- the core: lose it and the round ends
+        hp = 100,                             -- Forts reactor HP 100 (fragile)
+        energy_rate = 100, metal_rate = 5,    -- also the base generator
+        half_w = 0.7, half_h = 0.9,
+        texture = "forts:devices/reactor/reactor_core01.tga",
+        color = { 0.3, 1.0, 0.5 },
+    },
+    {
+        name = "turbine", wind = true,        -- energy scales with height above ground
+        hp = 60, wind_max_rate = 16, wind_max_height = 22,
+        half_w = 0.5, half_h = 1.3,
+        cost_metal = 30, cost_energy = 50,
+        texture = "forts:devices/windturbine/base.tga",
+        color = { 0.6, 0.8, 1.0 },
+    },
+    {
+        name = "mine", needs_deposit = true,  -- only produces on a metal deposit
+        hp = 80, energy_rate = -5, metal_rate = 4,   -- Forts mine: -5 e, +4 metal
+        half_w = 0.6, half_h = 0.5,
+        cost_metal = 0, cost_energy = 100,
+        texture = "",
+        color = { 0.75, 0.55, 0.2 },
+    },
+    {
+        name = "battery",                     -- energy storage
+        hp = 100, energy_storage = 2000,      -- Forts battery cap 2000
+        half_w = 0.6, half_h = 0.6,
+        cost_metal = 20, cost_energy = 100,
+        texture = "",
+        color = { 0.9, 0.85, 0.3 },
+    },
+}
+
+function IndexOfDevice(name)
+    for i, d in ipairs(DeviceDefs) do if d.name == name then return i end end
+    return nil
+end
+function FindDevice(name)
+    local i = IndexOfDevice(name); if i then return DeviceDefs[i] end; return nil
+end
diff --git a/data/map.lua b/data/map.lua
new file mode 100644
index 0000000..13f9c94
--- /dev/null
+++ b/data/map.lua
@@ -0,0 +1,13 @@
+-- Base scenario map: metal deposits and pre-placed devices. Mods append (the
+-- enemy-fort mod adds the enemy reactor). Coordinates are world units; y ~ 1 is
+-- the ground surface.
+Deposits   = Deposits   or {}
+MapDevices = MapDevices or {}
+
+-- Metal deposits (mines must sit on these). Player side (left) + enemy side (right).
+for _, x in ipairs({ -24, -11, 23, 31 }) do
+    table.insert(Deposits, { x, 1.0 })
+end
+
+-- Player reactor on the left.
+table.insert(MapDevices, { type = "reactor", x = -22, y = 2.0, team = 0 })
diff --git a/data/materials.lua b/data/materials.lua
new file mode 100644
index 0000000..a2f876c
--- /dev/null
+++ b/data/materials.lua
@@ -0,0 +1,62 @@
+-- Base building materials for the clone.
+--
+-- The engine reads the global `Materials` array (in order). Build modes 1/2/3
+-- map to entries 1/2/3. Mods under data/mods/ run AFTER this file and may use
+-- FindMaterial(name) to tweak these, or table.insert(Materials, ...) to add new
+-- ones. (angle_threshold is in DEGREES; the engine converts to radians.)
+
+Materials =
+{
+    {
+        name = "wood",
+        stiffness = 600, damping = 12, mass = 0.25,
+        max_compression = 0.90, max_expansion = 1.10,  -- snaps past +/-10% length
+        angle_threshold = 30, tension_only = false,    -- snaps if a loose strut rotates >30deg
+        min_length = 0.4, max_length = 3.0, max_link_length = 6.0,  -- single-strut size limits
+        hit_points = 150,
+        flammable = true, burn_rate = 15, spread_time = 2.0,   -- wood: slow burn/spread
+        blocks_projectiles = true, blocks_beam = true,         -- solid: stops shells & beams
+        half_width = 0.15,
+        color = { 1.0, 1.0, 1.0, 1.0 },                 -- white = show texture untinted
+        texture = "data/textures/wood.png",
+    },
+    {
+        name = "bgbrace",                               -- background bracing
+        stiffness = 600, damping = 12, mass = 0.25,
+        max_compression = 0.92, max_expansion = 1.08,
+        angle_threshold = 30, tension_only = false,
+        min_length = 0.4, max_length = 3.0, max_link_length = 6.0,
+        hit_points = 100,
+        flammable = true, burn_rate = 22, spread_time = 0.7,   -- burns ~3x faster than wood
+        blocks_projectiles = false, blocks_beam = false,       -- shells AND beams pass through (beam still burns it)
+        half_width = 0.15,
+        color = { 1.0, 1.0, 1.0, 0.45 },                -- translucent
+        texture = "data/textures/bgbrace.png",
+    },
+    {
+        name = "rope",
+        stiffness = 150, damping = 8, mass = 0.05,
+        max_compression = 0.0, max_expansion = 1.50,    -- slack in compression, snaps at +50%
+        angle_threshold = 360, tension_only = true,     -- never snaps on angle
+        min_length = 0.8, max_length = 1.5, max_link_length = 20.0,  -- subdivides into many segments -> drapes
+        hit_points = 50,
+        flammable = true, burn_rate = 25, spread_time = 1.0,   -- burns through fast
+        blocks_projectiles = false, blocks_beam = false,       -- shells AND beams pass through
+        half_width = 0.04,
+        color = { 0.15, 0.12, 0.10, 1.0 },
+    },
+}
+
+-- Helpers mods can use (mirrors the Forts modding API shape).
+function IndexOfMaterial(name)
+    for i, m in ipairs(Materials) do
+        if m.name == name then return i end
+    end
+    return nil
+end
+
+function FindMaterial(name)
+    local i = IndexOfMaterial(name)
+    if i then return Materials[i] end
+    return nil
+end
diff --git a/data/mods/enemy-fort/map.lua b/data/mods/enemy-fort/map.lua
new file mode 100644
index 0000000..443b74b
--- /dev/null
+++ b/data/mods/enemy-fort/map.lua
@@ -0,0 +1,3 @@
+-- The enemy fort's reactor (team 1). Sits inside the fort (columns x=25..29).
+-- Destroy it to win.
+table.insert(MapDevices, { type = "reactor", x = 27, y = 3.0, team = 1 })
diff --git a/data/mods/enemy-fort/mod.lua b/data/mods/enemy-fort/mod.lua
new file mode 100644
index 0000000..b2bc990
--- /dev/null
+++ b/data/mods/enemy-fort/mod.lua
@@ -0,0 +1,4 @@
+-- Scenario mod: a prebuilt enemy fort on the right for the player to shoot at.
+Selectable = true
+Priority   = 5
+Category   = "Scenario"
diff --git a/data/mods/enemy-fort/structures.lua b/data/mods/enemy-fort/structures.lua
new file mode 100644
index 0000000..ce6bdd0
--- /dev/null
+++ b/data/mods/enemy-fort/structures.lua
@@ -0,0 +1,19 @@
+-- A triangulated wooden fort on the right side (columns at x=25,27,29; rows at
+-- y=1,3,5). Foundations sit on the ground (y=1). All beams <= 3 units so they
+-- obey the material length limits. Shoot it apart with the cannon.
+table.insert(Structures, {
+    name = "enemy fort",
+    beams = {
+        -- verticals
+        {25,1,25,3,"wood"}, {25,3,25,5,"wood"},
+        {27,1,27,3,"wood"}, {27,3,27,5,"wood"},
+        {29,1,29,3,"wood"}, {29,3,29,5,"wood"},
+        -- horizontals
+        {25,1,27,1,"wood"}, {27,1,29,1,"wood"},
+        {25,3,27,3,"wood"}, {27,3,29,3,"wood"},
+        {25,5,27,5,"wood"}, {27,5,29,5,"wood"},
+        -- diagonals (triangulation, so it's rigid)
+        {25,1,27,3,"wood"}, {27,1,29,3,"wood"},
+        {25,3,27,5,"wood"}, {27,3,29,5,"wood"},
+    },
+})
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 {}
diff --git a/data/textures/CREDITS.md b/data/textures/CREDITS.md
new file mode 100644
index 0000000..3c4ce4a
--- /dev/null
+++ b/data/textures/CREDITS.md
@@ -0,0 +1,23 @@
+# Placeholder texture credits
+
+All placeholder art here is **CC0 1.0 (public domain)** by **Kenney** — https://kenney.nl
+(no attribution required; credited anyway). Pulled from the mirror
+https://github.com/iwenzhou/kenney.
+
+| File | Source pack | Original |
+|------|-------------|----------|
+| wood.png | Platformer pack (Base) | Tiles/box.png |
+| bgbrace.png | Platformer pack (Base) | Tiles/boxAlt.png |
+| ground.png | Platformer pack (Base) | Tiles/dirtCenter.png |
+| weapon_gun.png | Space Shooter (300) | Parts/gun07.png |
+| weapon_turret.png | Space Shooter (300) | Parts/turretBase_big.png |
+| projectile_laser.png | Space Shooter (300) | Lasers/laserBlue01.png |
+
+These are temporary placeholders. Replace with original art before release.
+
+Third-party code: `third_party/stb/stb_image*.h` — public domain (stb, Sean Barrett).
+
+## M5 devices (added)
+| reactor_player.png | Platformer (Base) | Items/gemGreen.png |
+| reactor_enemy.png  | Platformer (Base) | Items/gemRed.png    |
+| deposit.png        | Platformer (Base) | Items/gemYellow.png |
diff --git a/data/textures/bgbrace.png b/data/textures/bgbrace.png
new file mode 100644
index 0000000..1da31f0
--- /dev/null
+++ b/data/textures/bgbrace.png
diff --git a/data/textures/deposit.png b/data/textures/deposit.png
new file mode 100644
index 0000000..0e4b4db
--- /dev/null
+++ b/data/textures/deposit.png
diff --git a/data/textures/ground.png b/data/textures/ground.png
new file mode 100644
index 0000000..d8e173f
--- /dev/null
+++ b/data/textures/ground.png
diff --git a/data/textures/projectile_laser.png b/data/textures/projectile_laser.png
new file mode 100644
index 0000000..b76aaf7
--- /dev/null
+++ b/data/textures/projectile_laser.png
diff --git a/data/textures/reactor_enemy.png b/data/textures/reactor_enemy.png
new file mode 100644
index 0000000..deb5cb0
--- /dev/null
+++ b/data/textures/reactor_enemy.png
diff --git a/data/textures/reactor_player.png b/data/textures/reactor_player.png
new file mode 100644
index 0000000..9e9c3f6
--- /dev/null
+++ b/data/textures/reactor_player.png
diff --git a/data/textures/weapon_gun.png b/data/textures/weapon_gun.png
new file mode 100644
index 0000000..209b40b
--- /dev/null
+++ b/data/textures/weapon_gun.png
diff --git a/data/textures/weapon_turret.png b/data/textures/weapon_turret.png
new file mode 100644
index 0000000..e9747f7
--- /dev/null
+++ b/data/textures/weapon_turret.png
diff --git a/data/textures/wood.png b/data/textures/wood.png
new file mode 100644
index 0000000..7471ed7
--- /dev/null
+++ b/data/textures/wood.png
diff --git a/data/weapons.lua b/data/weapons.lua
new file mode 100644
index 0000000..8fd2a6b
--- /dev/null
+++ b/data/weapons.lua
@@ -0,0 +1,47 @@
+-- Weapon definitions (values scaled from Forts' data to our world units).
+-- Build modes / firing read the global `Weapons` array; mods may FindWeapon().
+
+Weapons =
+{
+    {
+        name = "cannon",              -- ballistic artillery (arcs under gravity)
+        muzzle_speed = 38,            -- launch speed (units/s); Forts MuzzleSpeed 6000 cm/s
+        reload = 2.0,                 -- seconds between shots
+        splash_damage = 200,          -- Forts StructureSplashDamage 200
+        splash_radius = 3.0,          -- Forts 150 cm ~= 3 units
+        knockback = 55,               -- Forts KickbackMean 40 (impulse)
+        projectile_radius = 0.18,
+        fire_chance = 0.25,           -- Forts cannon is incendiary (~25%)
+        min_fire_angle = -20,         -- firing arc (degrees, rel. to mount) — Forts MinFireAngle
+        max_fire_angle = 30,          -- Forts MaxFireAngle
+        energy_cost = 120,            -- energy per shot (Forts EnergyFireCost)
+        texture = "data/textures/weapon_turret.png",
+        projectile_texture = "data/textures/projectile_laser.png",
+    },
+    {
+        name = "laser",               -- line-of-sight beam; ignites what it hits
+        is_beam = true,
+        reload = 3.0,                 -- seconds between beams (Forts ReloadTime)
+        beam_range = 70,              -- max beam length (units)
+        beam_dps = 90,                -- HP/s to the struck strut
+        beam_duration = 1.5,          -- Forts BeamDuration 1.5
+        fire_chance = 1.0,            -- laser ALWAYS ignites (its whole point)
+        min_fire_angle = -20,         -- Forts laser MinFireAngle -20
+        max_fire_angle = 45,          -- Forts laser MaxFireAngle 45
+        energy_cost = 200,            -- beam is energy-hungry
+        texture = "data/textures/weapon_turret.png",
+    },
+}
+
+function IndexOfWeapon(name)
+    for i, w in ipairs(Weapons) do
+        if w.name == name then return i end
+    end
+    return nil
+end
+
+function FindWeapon(name)
+    local i = IndexOfWeapon(name)
+    if i then return Weapons[i] end
+    return nil
+end