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-rw-r--r--railcart/LICENSE.txt19
-rw-r--r--railcart/README.txt30
-rw-r--r--railcart/depends.txt1
-rw-r--r--railcart/init.lua154
-rw-r--r--railcart/models/cart.pngbin0 -> 422 bytes
-rw-r--r--railcart/models/railcart.x339
-rw-r--r--railcart/railcart.lua252
-rw-r--r--railcart/textures/cart.pngbin0 -> 422 bytes
-rw-r--r--railcart/textures/cart_bottom.pngbin0 -> 154 bytes
-rw-r--r--railcart/textures/cart_side.pngbin0 -> 192 bytes
-rw-r--r--railcart/textures/cart_top.pngbin0 -> 262 bytes
11 files changed, 795 insertions, 0 deletions
diff --git a/railcart/LICENSE.txt b/railcart/LICENSE.txt
new file mode 100644
index 0000000..5f3db02
--- /dev/null
+++ b/railcart/LICENSE.txt
@@ -0,0 +1,19 @@
+Minetest Mod - Railcart [railcart]
+==================================
+
+License Source Code: LGPL v2.1
+
+License of media (textures, sounds and models): CC-0
+
+Authors of media files:
+-----------------------
+
+kddekadenz:
+ cart_bottom.png
+ cart_side.png
+ cart_top.png
+
+Zeg9:
+ cart.x
+ cart.png
+
diff --git a/railcart/README.txt b/railcart/README.txt
new file mode 100644
index 0000000..dd4d70e
--- /dev/null
+++ b/railcart/README.txt
@@ -0,0 +1,30 @@
+Minetest Mod - Railcart [railcart]
+==================================
+
+Minetest version: 0.4.13
+
+Depends: railtrack
+
+Proof of concept ground up re-write of the carts mod. Currently uses media files
+borrowed from the original carts mod by PilzAdam.
+
+Please note, this mod makes heavy use of metadata so that carts are able to
+travel through unloaded map chunks, therefor a 'carts' privilege is required
+to place or pick up carts in multiplayer mode.
+
+Crafting
+--------
+
+S = Steel Ingot [default:steel_ingot]
+W = Wood [group:wood]
+
+Railcart: [railcart:cart]
+
++---+---+---+
+| S | | S |
++---+---+---+
+| S | | S |
++---+---+---+
+| W | S | W |
++---+---+---+
+
diff --git a/railcart/depends.txt b/railcart/depends.txt
new file mode 100644
index 0000000..e602f16
--- /dev/null
+++ b/railcart/depends.txt
@@ -0,0 +1 @@
+railtrack
diff --git a/railcart/init.lua b/railcart/init.lua
new file mode 100644
index 0000000..df9d4f1
--- /dev/null
+++ b/railcart/init.lua
@@ -0,0 +1,154 @@
+local modpath = minetest.get_modpath(minetest.get_current_modname())
+
+dofile(modpath.."/railcart.lua")
+
+local worldpath = minetest.get_worldpath()
+local input = io.open(worldpath.."/railcart.txt", "r")
+if input then
+ local data = input:read('*all')
+ if data then
+ local carts = minetest.deserialize(data) or {}
+ for id, ref in pairs(carts) do
+ railcart.allcarts[id] = railcart.cart:new(ref)
+ end
+ end
+ input = nil
+end
+
+local function is_valid_player(object)
+ if object then
+ return object:is_player()
+ end
+end
+
+minetest.register_globalstep(function(dtime)
+ for _, cart in pairs(railcart.allcarts) do
+ cart:on_step(dtime)
+ end
+ railcart.timer = railcart.timer + dtime
+ if railcart.timer > RAILCART_OBJECT_SAVE_TIME then
+ railcart:save()
+ railcart.timer = 0
+ end
+end)
+
+minetest.register_privilege("carts", "Player can pick-up and place carts.")
+
+minetest.register_entity("railcart:cart_entity", {
+ physical = false,
+ collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
+ visual = "mesh",
+ mesh = "railcart.x",
+ visual_size = {x=1, y=1},
+ textures = {"cart.png"},
+ cart = nil,
+ driver = nil,
+ timer = 0,
+ on_activate = function(self, staticdata, dtime_s)
+ self.object:set_armor_groups({immortal=1})
+ if staticdata == "expired" then
+ self.object:remove()
+ end
+ end,
+ on_punch = function(self, puncher, _, _, direction)
+ if not is_valid_player(puncher) then
+ return
+ end
+ if puncher:get_player_control().sneak then
+ if self.cart then
+ if self.cart.id then
+ railcart.allcarts[self.cart.id] = nil
+ end
+ end
+ self.object:remove()
+ local inv = puncher:get_inventory()
+ if minetest.setting_getbool("creative_mode") then
+ if not inv:contains_item("main", "railcart:cart") then
+ inv:add_item("main", "railcart:cart")
+ end
+ else
+ inv:add_item("main", "railcart:cart")
+ end
+ return
+ end
+ if self.cart and direction then
+ local pos = vector.round(self.object:getpos())
+ local dir = vector.round(vector.normalize(direction))
+ self.timer = 0
+ self.cart.target = nil
+ self.cart.prev = pos
+ self.cart.vel = vector.multiply(dir, 4)
+ self.cart.accel = railtrack:get_acceleration(pos)
+ self.object:setvelocity(self.cart.vel)
+ end
+ end,
+ on_rightclick = function(self, clicker)
+ if not is_valid_player(clicker) then
+ return
+ end
+ if self.driver and clicker == self.driver then
+ self.driver = nil
+ clicker:set_detach()
+ elseif not self.driver then
+ self.driver = clicker
+ clicker:set_attach(self.object, "", {x=0,y=5,z=0}, {x=0,y=0,z=0})
+ end
+ end,
+ on_step = function(self, dtime)
+ local cart = self.cart
+ local object = self.object
+ if not cart or not object then
+ return
+ end
+ self.timer = self.timer - dtime
+ if self.timer > 0 then
+ return
+ end
+ self.timer = railcart:update(cart, RAILCART_ENTITY_UPDATE_TIME, object)
+ end,
+ get_staticdata = function(self)
+ return "expired"
+ end,
+})
+
+minetest.register_craftitem("railcart:cart", {
+ description = "Railcart",
+ inventory_image = minetest.inventorycube("cart_top.png", "cart_side.png", "cart_side.png"),
+ wield_image = "cart_side.png",
+ on_place = function(itemstack, placer, pointed_thing)
+ local name = placer:get_player_name()
+ if not name or pointed_thing.type ~= "node" then
+ return
+ end
+ local pos = pointed_thing.under
+ if not railtrack:is_railnode(pos) then
+ return
+ end
+ if not minetest.is_singleplayer() then
+ if not minetest.check_player_privs(name, {carts=true}) then
+ minetest.chat_send_player(name, "Requires carts privilege")
+ return
+ end
+ end
+ local cart = railcart.cart:new()
+ cart.id = #railcart.allcarts + 1
+ cart.pos = pos
+ cart.prev = vector.new(pos)
+ cart.accel = railtrack:get_acceleration(pos)
+ table.insert(railcart.allcarts, cart)
+ if not minetest.setting_getbool("creative_mode") then
+ itemstack:take_item()
+ end
+ return itemstack
+ end,
+})
+
+minetest.register_craft({
+ output = "railcart:cart",
+ recipe = {
+ {"default:steel_ingot", "", "default:steel_ingot"},
+ {"default:steel_ingot", "", "default:steel_ingot"},
+ {"group:wood", "default:steel_ingot", "group:wood"},
+ },
+})
+
diff --git a/railcart/models/cart.png b/railcart/models/cart.png
new file mode 100644
index 0000000..1f9f568
--- /dev/null
+++ b/railcart/models/cart.png
Binary files differ
diff --git a/railcart/models/railcart.x b/railcart/models/railcart.x
new file mode 100644
index 0000000..3325aaf
--- /dev/null
+++ b/railcart/models/railcart.x
@@ -0,0 +1,339 @@
+xof 0303txt 0032
+
+Frame Root {
+ FrameTransformMatrix {
+ 1.000000, 0.000000, 0.000000, 0.000000,
+ 0.000000, 0.000000, 1.000000, 0.000000,
+ 0.000000, 1.000000,-0.000000, 0.000000,
+ 0.000000, 0.000000, 0.000000, 1.000000;;
+ }
+ Frame Cube {
+ FrameTransformMatrix {
+ 5.000000, 0.000000,-0.000000, 0.000000,
+ -0.000000, 3.535534, 3.535534, 0.000000,
+ 0.000000,-3.535534, 3.535534, 0.000000,
+ 0.000000,-3.000000, 3.000000, 1.000000;;
+ }
+ Mesh { //Cube_001 Mesh
+ 72;
+ -1.000000; 1.000000;-1.000000;,
+ -1.000000;-1.000000;-1.000000;,
+ 1.000000;-1.000000;-1.000000;,
+ 1.000000; 1.000000;-1.000000;,
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+ 1.000000;-1.000000;-1.000000;,
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+ 1.000000; 0.999999; 1.000000;,
+ 1.000000; 1.000000;-1.000000;;
+ 18;
+ 4;0;1;2;3;,
+ 4;4;5;6;7;,
+ 4;8;9;10;11;,
+ 4;12;13;14;15;,
+ 4;16;17;18;19;,
+ 4;20;21;22;23;,
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+ 4;28;29;30;31;,
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+ 4;44;45;46;47;,
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+ 4;52;53;54;55;,
+ 4;56;57;58;59;,
+ 4;60;61;62;63;,
+ 4;64;65;66;67;,
+ 4;68;69;70;71;;
+ MeshNormals { //Cube_001 Normals
+ 72;
+ 0.000000; 0.000000;-1.000000;,
+ 0.000000; 0.000000;-1.000000;,
+ 0.000000; 0.000000;-1.000000;,
+ 0.000000; 0.000000;-1.000000;,
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+ -0.000000;-1.000000; 0.000000;,
+ -0.000000;-1.000000; 0.000000;,
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+ 0.000000;-0.000000; 1.000000;,
+ 0.000000;-0.000000; 1.000000;,
+ 0.000000;-0.000000; 1.000000;,
+ 0.000000;-0.000000; 1.000000;,
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+ 0.000000;-0.000000; 1.000000;,
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+ 0.000000; 1.000000; 0.000000;,
+ 0.000000; 1.000000; 0.000000;,
+ 1.000000;-0.000000; 0.000000;,
+ 1.000000;-0.000000; 0.000000;,
+ 1.000000;-0.000000; 0.000000;,
+ 1.000000;-0.000000; 0.000000;;
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+ 4;0;1;2;3;,
+ 4;4;5;6;7;,
+ 4;8;9;10;11;,
+ 4;12;13;14;15;,
+ 4;16;17;18;19;,
+ 4;20;21;22;23;,
+ 4;24;25;26;27;,
+ 4;28;29;30;31;,
+ 4;32;33;34;35;,
+ 4;36;37;38;39;,
+ 4;40;41;42;43;,
+ 4;44;45;46;47;,
+ 4;48;49;50;51;,
+ 4;52;53;54;55;,
+ 4;56;57;58;59;,
+ 4;60;61;62;63;,
+ 4;64;65;66;67;,
+ 4;68;69;70;71;;
+ } //End of Cube_001 Normals
+ MeshMaterialList { //Cube_001 Material List
+ 1;
+ 18;
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0;;
+ Material Material {
+ 0.640000; 0.640000; 0.640000; 1.000000;;
+ 96.078431;
+ 0.500000; 0.500000; 0.500000;;
+ 0.000000; 0.000000; 0.000000;;
+ TextureFilename {"cart.png";}
+ }
+ } //End of Cube_001 Material List
+ MeshTextureCoords { //Cube_001 UV Coordinates
+ 72;
+ 0.000000; 0.500000;,
+ 0.500000; 0.500000;,
+ 0.500000; 1.000000;,
+ 0.000000; 1.000000;,
+ 0.031250; 0.500000;,
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+ 0.500000; 0.000000;,
+ 0.500000; 0.500000;,
+ 0.500000; 0.000000;,
+ 1.000000; 0.000000;,
+ 1.000000; 0.500000;;
+ } //End of Cube_001 UV Coordinates
+ } //End of Cube_001 Mesh
+ } //End of Cube
+} //End of Root Frame
+AnimationSet {
+ Animation {
+ {Cube}
+ AnimationKey { //Position
+ 2;
+ 4;
+ 0;3; 0.000000, 0.000000, 0.000000;;,
+ 1;3; 0.000000, 3.000000, 3.000000;;,
+ 2;3; 0.000000,-3.000000, 3.000000;;,
+ 3;3; 0.000000,-3.000000, 3.000000;;;
+ }
+ AnimationKey { //Rotation
+ 0;
+ 4;
+ 0;4; -1.000000, 0.000000, 0.000000, 0.000000;;,
+ 1;4; -0.923880,-0.382683,-0.000000, 0.000000;;,
+ 2;4; -0.923880, 0.382683, 0.000000, 0.000000;;,
+ 3;4; -0.923880, 0.382683, 0.000000, 0.000000;;;
+ }
+ AnimationKey { //Scale
+ 1;
+ 4;
+ 0;3; 5.000000, 5.000000, 5.000000;;,
+ 1;3; 5.000000, 5.000000, 5.000000;;,
+ 2;3; 5.000000, 5.000000, 5.000000;;,
+ 3;3; 5.000000, 5.000000, 5.000000;;;
+ }
+ }
+} //End of AnimationSet
diff --git a/railcart/railcart.lua b/railcart/railcart.lua
new file mode 100644
index 0000000..917da44
--- /dev/null
+++ b/railcart/railcart.lua
@@ -0,0 +1,252 @@
+RAILCART_ENTITY_UPDATE_TIME = 1
+RAILCART_OBJECT_UPDATE_TIME = 5
+RAILCART_OBJECT_SAVE_TIME = 10
+RAILCART_RELOAD_DISTANCE = 32
+RAILCART_SNAP_DISTANCE = 0.5
+RAILCART_SPEED_MIN = 0.1
+RAILCART_SPEED_MAX = 10
+
+railcart = {
+ timer = 0,
+ allcarts = {},
+}
+
+railcart.cart = {
+ id = nil,
+ entity = {},
+ pos = nil,
+ target = nil,
+ prev = nil,
+ accel = nil,
+ dir = {x=0, y=0, z=0},
+ vel = {x=0, y=0, z=0},
+ acc = {x=0, y=0, z=0},
+ timer = 0,
+}
+
+function railcart.cart:new(obj)
+ obj = obj or {}
+ setmetatable(obj, self)
+ self.__index = self
+ return obj
+end
+
+function railcart.cart:is_loaded()
+ for _, player in pairs(minetest.get_connected_players()) do
+ local pos = player:getpos()
+ if pos then
+ local dist = railtrack:get_distance(pos, self.pos)
+ if dist <= RAILCART_RELOAD_DISTANCE then
+ return true
+ end
+ end
+ end
+ return false
+end
+
+function railcart.cart:on_step(dtime)
+ self.timer = self.timer - dtime
+ if self.timer > 0 then
+ return
+ end
+ self.timer = RAILCART_OBJECT_UPDATE_TIME
+ local entity = railcart:get_cart_ref(self.id)
+ if entity.object then
+ return
+ end
+ if self:is_loaded() then
+ local object = minetest.add_entity(self.pos, "railcart:cart_entity")
+ if object then
+ entity = object:get_luaentity() or {}
+ entity.cart = self
+ object:setvelocity(self.vel)
+ object:setacceleration(self.acc)
+ end
+ else
+ self.timer = railcart:update(self, self.timer)
+ end
+end
+
+function railcart:save()
+ local carts = {}
+ for id, cart in pairs(railcart.allcarts) do
+ local ref = {}
+ for k, v in pairs(cart) do
+ ref[k] = v
+ end
+ ref.entity = nil
+ table.insert(carts, ref)
+ end
+ local output = io.open(minetest.get_worldpath().."/railcart.txt",'w')
+ if output then
+ output:write(minetest.serialize(carts))
+ io.close(output)
+ end
+end
+
+function railcart:get_cart_ref(id)
+ local cart_ref = {}
+ for _, ref in pairs(minetest.luaentities) do
+ if ref.cart then
+ if ref.cart.id == id then
+ cart_ref = ref
+ break
+ end
+ end
+ end
+ return cart_ref
+end
+
+function railcart:get_delta_time(vel, acc, dist)
+ if vel > 0 then
+ if acc == 0 then
+ return dist / vel
+ end
+ local r = math.sqrt(vel * vel + 2 * acc * dist)
+ if r > 0 then
+ return (-vel + r) / acc
+ end
+ end
+ return 9999 --INF
+end
+
+function railcart:velocity_to_dir(v)
+ if math.abs(v.x) > math.abs(v.z) then
+ return {x=railtrack:get_sign(v.x), y=railtrack:get_sign(v.y), z=0}
+ else
+ return {x=0, y=railtrack:get_sign(v.y), z=railtrack:get_sign(v.z)}
+ end
+end
+
+function railcart:velocity_to_speed(vel)
+ local speed = math.max(math.abs(vel.x), math.abs(vel.z))
+ if speed < RAILCART_SPEED_MIN then
+ speed = 0
+ elseif speed > RAILCART_SPEED_MAX then
+ speed = RAILCART_SPEED_MAX
+ end
+ return speed
+end
+
+function railcart:get_target(pos, vel)
+ local meta = minetest.get_meta(vector.round(pos))
+ local dir = self:velocity_to_dir(vel)
+ local targets = {}
+ local rots = RAILTRACK_ROTATIONS
+ local contype = meta:get_string("contype") or ""
+ local s_junc = meta:get_string("junctions") or ""
+ local s_cons = meta:get_string("connections") or ""
+ local s_rots = meta:get_string("rotations") or ""
+ if contype == "section" then
+ local junctions = minetest.deserialize(s_junc) or {}
+ for _, p in pairs(junctions) do
+ table.insert(targets, p)
+ end
+ else
+ local cons = minetest.deserialize(s_cons) or {}
+ for _, p in pairs(cons) do
+ table.insert(targets, p)
+ end
+ if s_rots ~= "" then
+ local fwd = false
+ for _, p in pairs(cons) do
+ if vector.equals(vector.add(pos, dir), p) then
+ fwd = true
+ end
+ end
+ if fwd == true or #cons == 1 then
+ rots = s_rots
+ end
+ end
+ end
+ local rotations = railtrack:get_rotations(rots, dir)
+ for _, r in ipairs(rotations) do
+ for _, t in pairs(targets) do
+ local d = railtrack:get_direction(t, pos)
+ if r.x == d.x and r.z == d.z then
+ return t
+ end
+ end
+ end
+end
+
+function railcart:update(cart, time, object)
+ if object then
+ cart.pos = object:getpos()
+ cart.vel = object:getvelocity()
+ end
+ if not cart.target then
+ cart.pos = vector.new(cart.prev)
+ cart.target = railcart:get_target(cart.pos, cart.vel)
+ if object then
+ object:moveto(cart.pos)
+ end
+ end
+ local speed = railcart:velocity_to_speed(cart.vel)
+ if not cart.target then
+ speed = 0
+ end
+ if speed > RAILCART_SPEED_MIN then
+ cart.dir = railtrack:get_direction(cart.target, cart.pos)
+ local d1 = railtrack:get_distance(cart.prev, cart.target)
+ local d2 = railtrack:get_distance(cart.prev, cart.pos)
+ local dist = d1 - d2
+ if dist > RAILCART_SNAP_DISTANCE then
+ local accel = RAILTRACK_ACCEL_FLAT
+ if cart.dir.y == -1 then
+ accel = RAILTRACK_ACCEL_DOWN
+ elseif cart.dir.y == 1 then
+ accel = RAILTRACK_ACCEL_UP
+ end
+ accel = cart.accel or accel
+ local dt = railcart:get_delta_time(speed, accel, dist)
+ if dt < time then
+ time = dt
+ end
+ local dp = speed * time + 0.5 * accel * time * time
+ local vf = speed + accel * time
+ if object then
+ if vf <= 0 then
+ speed = 0
+ accel = 0
+ end
+ cart.vel = vector.multiply(cart.dir, speed)
+ cart.acc = vector.multiply(cart.dir, accel)
+ elseif dp > 0 then
+ cart.vel = vector.multiply(cart.dir, vf)
+ cart.pos = vector.add(cart.pos, vector.multiply(cart.dir, dp))
+ end
+ else
+ cart.pos = vector.new(cart.target)
+ cart.prev = vector.new(cart.target)
+ cart.accel = railtrack:get_acceleration(cart.target)
+ cart.target = nil
+ return 0
+ end
+ else
+ cart.vel = {x=0, y=0, z=0}
+ cart.acc = {x=0, y=0, z=0}
+ end
+ if object then
+ if cart.dir.y == -1 then
+ object:set_animation({x=1, y=1}, 1, 0)
+ elseif cart.dir.y == 1 then
+ object:set_animation({x=2, y=2}, 1, 0)
+ else
+ object:set_animation({x=0, y=0}, 1, 0)
+ end
+ if cart.dir.x < 0 then
+ object:setyaw(math.pi / 2)
+ elseif cart.dir.x > 0 then
+ object:setyaw(3 * math.pi / 2)
+ elseif cart.dir.z < 0 then
+ object:setyaw(math.pi)
+ elseif cart.dir.z > 0 then
+ object:setyaw(0)
+ end
+ object:setvelocity(cart.vel)
+ object:setacceleration(cart.acc)
+ end
+ return time
+end
+
diff --git a/railcart/textures/cart.png b/railcart/textures/cart.png
new file mode 100644
index 0000000..1f9f568
--- /dev/null
+++ b/railcart/textures/cart.png
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diff --git a/railcart/textures/cart_bottom.png b/railcart/textures/cart_bottom.png
new file mode 100644
index 0000000..f84b1ae
--- /dev/null
+++ b/railcart/textures/cart_bottom.png
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diff --git a/railcart/textures/cart_side.png b/railcart/textures/cart_side.png
new file mode 100644
index 0000000..79f6c32
--- /dev/null
+++ b/railcart/textures/cart_side.png
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diff --git a/railcart/textures/cart_top.png b/railcart/textures/cart_top.png
new file mode 100644
index 0000000..8140fc7
--- /dev/null
+++ b/railcart/textures/cart_top.png
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generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 01:09:16 +0000