26 local function coupling_particles(pos,truth)
32 minetest.add_particlespawner({
37 minvel = vector.new(-10,-10,-10),
38 maxvel = vector.new(10,10,10),
39 minacc = {x=0, y=0, z=0},
40 maxacc = {x=0, y=0, z=0},
45 collisiondetection = false,
46 collision_removal = false,
48 texture = "couple_particle.png^[colorize:"..color..":200",
53 local function data_injection(pos,data)
55 pool[minetest.hash_node_position(pos)] = true
57 pool[minetest.hash_node_position(pos)] = nil
61 local function speed_limiter(self,speed)
62 local test = self.object:get_velocity()--vector.multiply(self.velocity,new_vel)
64 if test.x > speed then
66 elseif test.x < -speed then
69 if test.z > speed then
71 elseif test.z < -speed then
74 self.object:set_velocity(test)
77 local function create_axis(pos)
78 local possible_dirs = {}
79 for _,dir in pairs(dirs) do
80 local pos2 = vector.add(pos,dir)
81 if pool[minetest.hash_node_position(pos2)] then
82 table.insert(possible_dirs,dir)
88 local function collision_detect(self)
89 if not self.axis_lock then return end
90 local pos = self.object:get_pos()
91 for _,object in ipairs(minetest.get_objects_inside_radius(pos, 1)) do
92 if object:is_player() then
93 local pos2 = object:get_pos()
94 if self.axis_lock == "x" then
96 local velocity = (1-vector.distance(vector.new(pos.x,0,0),vector.new(pos2.x,0,0)))*5
97 local dir = vector.direction(vector.new(pos2.x,0,0),vector.new(pos.x,0,0))
98 local new_vel = vector.multiply(dir,velocity)
99 self.object:add_velocity(new_vel)
101 elseif self.axis_lock == "z" then
102 local velocity = (1-vector.distance(vector.new(0,0,pos.z),vector.new(0,0,pos2.z)))*5
103 local dir = vector.direction(vector.new(0,0,pos2.z),vector.new(0,0,pos.z))
104 local new_vel = vector.multiply(dir,velocity)
105 self.object:add_velocity(new_vel)
113 local function direction_snap(self)
116 if dir.y == 1 then pitch = math.pi/4 end
117 if dir.y == -1 then pitch = -math.pi/4 end
118 local yaw = minetest.dir_to_yaw(dir)
119 self.object:set_rotation(vector.new(pitch,yaw,0))
122 local function turn_snap(pos,self,dir,dir2)
123 if self.axis_lock == "x" then
124 if dir.x ~= 0 and dir2.z ~= 0 then
125 local velocity = self.object:get_velocity()
126 local inertia = math.abs(velocity.x)
127 self.object:set_velocity(vector.multiply(dir2,inertia))
130 self.object:set_pos(pos)
135 if self.axis_lock == "z" then
136 if dir.z ~= 0 and dir2.x ~= 0 then
137 local velocity = self.object:get_velocity()
138 local inertia = math.abs(velocity.z)
139 self.object:set_velocity(vector.multiply(dir2,inertia))
142 self.object:set_pos(pos)
150 local function climb_snap(pos,self,dir,dir2)
151 if self.axis_lock == "x" then
152 if dir.x == dir2.x and dir2.y ~= 0 then
153 local velocity = self.object:get_velocity()
154 local inertia = math.abs(velocity.x)
155 self.object:set_velocity(vector.multiply(dir2,inertia))
158 self.object:set_pos(pos)
163 if self.axis_lock == "z" then
164 if dir.z == dir2.z and dir2.y ~= 0 then
165 local velocity = self.object:get_velocity()
166 local inertia = math.abs(velocity.z)
167 self.object:set_velocity(vector.multiply(dir2,inertia))
170 self.object:set_pos(pos)
178 local function straight_snap(pos,self,dir)
179 if self.axis_lock == "x" then
180 if dir.x ~= 0 and pool[minetest.hash_node_position(vector.add(pos,vector.new(dir.x,0,0)))] then
181 local velocity = self.object:get_velocity()
182 self.object:set_velocity(vector.new(velocity.x,0,0))
183 self.dir = vector.new(dir.x,0,0)
185 self.object:set_pos(pos)
190 if self.axis_lock == "z" then
191 if dir.z ~= 0 and pool[minetest.hash_node_position(vector.add(pos,vector.new(0,0,dir.z)))] then
192 local velocity = self.object:get_velocity()
193 self.object:set_velocity(vector.new(0,0,velocity.z))
194 self.dir = vector.new(0,0,dir.z)
196 self.object:set_pos(pos)
205 local function coupling_logic(self)
207 if not self.axis_lock then return end
209 if not self.coupler1 then return end
211 if self.dir.y ~= 0 then return end
213 local pos = self.object:get_pos()
215 local pos2 = self.coupler1:get_pos()
217 if self.axis_lock == "x" then
218 local velocity_real = self.object:get_velocity()
219 local distance = vector.distance(pos,pos2)
220 local new_vel = vector.new(0,0,0)
221 if distance > 1.5 then
222 local velocity = (distance-1)
223 local dir = vector.direction(vector.new(pos.x,0,0),vector.new(pos2.x,0,0))
225 new_vel = vector.multiply(dir,velocity)
227 new_vel = vector.multiply(velocity_real,-1)
229 self.object:add_velocity(new_vel)
230 elseif self.axis_lock == "z" then
231 local velocity_real = self.object:get_velocity()
232 local distance = vector.distance(pos,pos2)
233 local new_vel = vector.new(0,0,0)
234 if distance > 1.5 then
235 local velocity = (distance-1)
236 local dir = vector.direction(vector.new(0,0,pos.z),vector.new(0,0,pos2.z))
238 new_vel = vector.multiply(dir,velocity)
240 new_vel = vector.multiply(velocity_real,-1)
242 self.object:add_velocity(new_vel)
249 local function rail_brain(self,pos)
252 if not self.dir then self.dir = vector.new(0,0,0) end
254 local pos2 = self.object:get_pos()
258 speed_limiter(self,6)
260 if not pool[minetest.hash_node_position(vector.add(pos,dir))] then
262 if straight_snap(pos,self,dir) then
266 local possible_dirs = create_axis(pos)
268 if table.getn(possible_dirs) == 0 then
269 --stop slow down become physical
271 for _,dir2 in pairs(possible_dirs) do
272 if turn_snap(pos,self,dir,dir2) then
275 if climb_snap(pos,self,dir,dir2) then
288 minecart.on_step = function(self,dtime)
289 local pos = vector.round(self.object:get_pos())
290 if not self.axis_lock then
291 local possible_dirs = create_axis(pos)
292 for _,dir in pairs(possible_dirs) do
298 elseif dir.z ~= 0 then
307 --collision_detect(self)
312 minecart.on_punch = function(self, puncher)
313 if not puncher:get_wielded_item():get_name() == "minecart:wrench" then
317 self.object:set_velocity(vector.multiply(self.dir,6))
318 minetest.add_particlespawner({
321 minpos = vector.new(0,0.5,0),
322 maxpos = vector.new(0,0.5,0),
323 minvel = vector.new(0,0,0),
324 maxvel = vector.new(0,0,0),
325 minacc = {x=0, y=3, z=0},
326 maxacc = {x=0, y=5, z=0},
331 collisiondetection = false,
332 collision_removal = false,
334 texture = "smoke.png",
335 attached = self.object
342 minecart.on_rightclick = function(self,clicker)
343 local pos = self.object:get_pos()
344 if clicker:get_wielded_item():get_name() == "utility:furnace" then
345 local obj = minetest.add_entity(pos, "minecart:furnace")
346 obj:set_attach(self.object,"",vector.new(0,0,0),vector.new(0,0,0))
347 minetest.sound_play("wrench",{
348 object = self.object,
350 max_hear_distance = 64,
352 coupling_particles(pos,true)
357 if not clicker:get_wielded_item():get_name() == "minecart:wrench" then
361 local name = clicker:get_player_name()
362 if not pool[name] then
363 if not self.coupler2 then
364 pool[name] = self.object
365 minetest.sound_play("wrench",{
366 object = self.object,
368 max_hear_distance = 64,
370 coupling_particles(pos,true)
372 minetest.sound_play("wrench",{
373 object = self.object,
375 max_hear_distance = 64,
378 coupling_particles(pos,false)
381 if not (pool[name]:get_luaentity().coupler1 and pool[name]:get_luaentity().coupler1 == self.object or self.coupler2) then
382 self.coupler1 = pool[name]
383 pool[name]:get_luaentity().coupler2 = self.object
384 minetest.sound_play("wrench",{
385 object = self.object,
387 max_hear_distance = 64,
389 coupling_particles(pos,true)
391 minetest.sound_play("wrench",{
392 object = self.object,
394 max_hear_distance = 64,
397 coupling_particles(pos,false)
404 minecart.on_activate = function(self,staticdata, dtime_s)
405 self.object:set_armor_groups({immortal=1})
406 if string.sub(staticdata, 1, string.len("return")) ~= "return" then
409 local data = minetest.deserialize(staticdata)
410 if type(data) ~= "table" then
413 self.old_pos = self.object:get_pos()
414 self.velocity = vector.new(0,0,0)
417 minecart.get_staticdata = function(self)
418 return minetest.serialize({
424 minecart.initial_properties = {
425 physical = false, -- otherwise going uphill breaks
426 collisionbox = {-0.4, -0.5, -0.4, 0.4, 0.45, 0.4},--{-0.5, -0.4, -0.5, 0.5, 0.25, 0.5},
429 visual_size = {x=1, y=1},
430 textures = {"minecart.png"},
435 minetest.register_entity("minecart:minecart", minecart)
448 minetest.register_craftitem("minecart:minecart", {
449 description = "Minecart",
450 inventory_image = "minecartitem.png",
451 wield_image = "minecartitem.png",
452 on_place = function(itemstack, placer, pointed_thing)
453 if not pointed_thing.type == "node" then
457 local sneak = placer:get_player_control().sneak
458 local noddef = minetest.registered_nodes[minetest.get_node(pointed_thing.under).name]
459 if not sneak and noddef.on_rightclick then
460 minetest.item_place(itemstack, placer, pointed_thing)
464 if minetest.get_item_group(minetest.get_node(pointed_thing.under).name, "rail")>0 then
465 minetest.add_entity(pointed_thing.under, "minecart:minecart")
470 itemstack:take_item()
476 minetest.register_craft({
477 output = "minecart:minecart",
479 {"main:iron", "", "main:iron"},
480 {"main:iron", "main:iron", "main:iron"},
488 minetest.register_node("minecart:rail",{
489 description = "Rail",
490 wield_image = "rail.png",
492 "rail.png", "railcurve.png",
493 "railt.png", "railcross.png"
495 drawtype = "raillike",
497 sunlight_propagates = true,
498 is_ground_content = false,
500 node_placement_prediction = "",
503 fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
505 sounds = main.stoneSound(),
506 after_place_node = function(pos)
507 data_injection(pos,true)
509 after_destruct = function(pos)
512 groups={stone=1,wood=1,rail=1,attached_node=1},
516 minetest.register_lbm({
517 name = "minecart:rail",
518 nodenames = {"minecart:rail"},
519 run_at_every_load = true,
520 action = function(pos)
521 data_injection(pos,true)
525 minetest.register_craft({
526 output = "minecart:rail 32",
528 {"main:iron","","main:iron"},
529 {"main:iron","main:stick","main:iron"},
530 {"main:iron","","main:iron"}
535 minetest.register_food("minecart:wrench",{
536 description = "Train Wrench",
537 texture = "wrench.png",
540 minetest.register_craft({
541 output = "minecart:wrench",
543 {"main:iron", "", "main:iron"},
544 {"main:iron", "main:lapis", "main:iron"},
545 {"", "main:lapis", ""}
551 minetest.register_entity("minecart:furnace", {
552 initial_properties = {
553 visual = "wielditem",
554 visual_size = {x = 0.6, y = 0.6},
558 collide_with_objects = false,
560 collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
562 set_node = function(self)
563 self.object:set_properties({
565 textures = {"utility:furnace"},
570 on_activate = function(self, staticdata)
571 self.object:set_armor_groups({immortal = 1})