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|
--atan2 counts angles clockwise, minetest does counterclockwise
minetest.register_privilege("train_place", {
description = "Player can place trains on tracks not owned by player",
give_to_singleplayer= false,
});
minetest.register_privilege("train_remove", {
description = "Player can remove trains not owned by player",
give_to_singleplayer= false,
});
local wagon={
collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
--physical = true,
visual = "mesh",
mesh = "wagon.b3d",
visual_size = {x=3, y=3},
textures = {"black.png"},
is_wagon=true,
wagon_span=1,--how many index units of space does this wagon consume
has_inventory=false,
}
function wagon:train()
return advtrains.trains[self.train_id]
end
--[[about 'initalized':
when initialized is false, the entity hasn't got any data yet and should wait for these to be set before doing anything
when loading an existing object (with staticdata), it will be set
when instanciating a new object via add_entity, it is not set at the time on_activate is called.
then, wagon:initialize() will be called
wagon will save only uid in staticdata, no serialized table
]]
function wagon:on_activate(sd_uid, dtime_s)
if sd_uid~="" then
--destroy when loaded from static block.
self.object:remove()
return
end
self.object:set_armor_groups({immortal=1})
self.entity_name=self.name
end
function wagon:get_staticdata()
if not self:ensure_init() then return end
atprint("[wagon "..((self.unique_id and self.unique_id~="" and self.unique_id) or "no-id").."]: saving to wagon_save")
--serialize inventory, if it has one
if self.has_inventory then
local inv=minetest.get_inventory({type="detached", name="advtrains_wgn_"..self.unique_id})
self.ser_inv=advtrains.serialize_inventory(inv)
end
--save to table before being unloaded
advtrains.wagon_save[self.unique_id]=advtrains.merge_tables(self)
advtrains.wagon_save[self.unique_id].entity_name=self.name
advtrains.wagon_save[self.unique_id].name=nil
advtrains.wagon_save[self.unique_id].object=nil
return self.unique_id
end
--returns: uid of wagon
function wagon:init_new_instance(train_id, properties)
self.unique_id=os.time()..os.clock()
self.train_id=train_id
for k,v in pairs(properties) do
if k~="name" and k~="object" then
self[k]=v
end
end
self:init_shared()
self.initialized=true
atprint("init_new_instance "..self.unique_id.." ("..self.train_id..")")
return self.unique_id
end
function wagon:init_from_wagon_save(uid)
if not advtrains.wagon_save[uid] then
self.object:remove()
return
end
self.unique_id=uid
for k,v in pairs(advtrains.wagon_save[uid]) do
if k~="name" and k~="object" then
self[k]=v
end
end
if not self.train_id or not self:train() then
self.object:remove()
return
end
self:init_shared()
self.initialized=true
minetest.after(0.2, function() self:reattach_all() end)
atprint("init_from_wagon_save "..self.unique_id.." ("..self.train_id..")")
end
function wagon:init_shared()
if self.has_inventory then
local uid_noptr=self.unique_id..""
--to be used later
local inv=minetest.create_detached_inventory("advtrains_wgn_"..self.unique_id, {
allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
return count
end,
allow_put = function(inv, listname, index, stack, player)
return stack:get_count()
end,
allow_take = function(inv, listname, index, stack, player)
return stack:get_count()
end
})
if self.ser_inv then
advtrains.deserialize_inventory(self.ser_inv, inv)
end
if self.inventory_list_sizes then
for lst, siz in pairs(self.inventory_list_sizes) do
inv:set_size(lst, siz)
end
end
end
if self.doors then
self.door_anim_timer=0
self.door_state=0
end
if self.custom_on_activate then
self:custom_on_activate(dtime_s)
end
end
function wagon:ensure_init()
if self.initialized then
if self.noninitticks then self.noninitticks=nil end
return true
end
if not self.noninitticks then self.noninitticks=0 end
self.noninitticks=self.noninitticks+1
if self.noninitticks>20 then
self.object:remove()
else
self.object:setvelocity({x=0,y=0,z=0})
end
return false
end
-- Remove the wagon
function wagon:on_punch(puncher, time_from_last_punch, tool_capabilities, direction)
if not self:ensure_init() then return end
if not puncher or not puncher:is_player() then
return
end
if self.owner and puncher:get_player_name()~=self.owner and (not minetest.check_player_privs(puncher, {train_remove = true })) then
minetest.chat_send_player(puncher:get_player_name(), attrans("This wagon is owned by @1, you can't destroy it.", self.owner));
return
end
if minetest.setting_getbool("creative_mode") then
if not self:destroy() then return end
local inv = puncher:get_inventory()
if not inv:contains_item("main", self.name) then
inv:add_item("main", self.name)
end
else
local pc=puncher:get_player_control()
if not pc.sneak then
minetest.chat_send_player(puncher:get_player_name(), attrans("Warning: If you destroy this wagon, you only get some steel back! If you are sure, shift-leftclick the wagon."))
return
end
if not self:destroy() then return end
local inv = puncher:get_inventory()
for _,item in ipairs(self.drops or {self.name}) do
inv:add_item("main", item)
end
end
end
function wagon:destroy()
--some rules:
-- you get only some items back
-- single left-click shows warning
-- shift leftclick destroys
-- not when a driver is inside
for _,_ in pairs(self.seatp) do
return
end
if self.custom_may_destroy then
if not self.custom_may_destroy(self, puncher, time_from_last_punch, tool_capabilities, direction) then
return
end
end
if self.custom_on_destroy then
self.custom_on_destroy(self, puncher, time_from_last_punch, tool_capabilities, direction)
end
atprint("[wagon "..((self.unique_id and self.unique_id~="" and self.unique_id) or "no-id").."]: destroying")
self.object:remove()
table.remove(self:train().trainparts, self.pos_in_trainparts)
advtrains.update_trainpart_properties(self.train_id)
advtrains.wagon_save[self.unique_id]=nil
if self.discouple then self.discouple.object:remove() end--will have no effect on unloaded objects
return true
end
function wagon:on_step(dtime)
if not self:ensure_init() then return end
local t=os.clock()
local pos = self.object:getpos()
if not pos then
atprint("["..self.unique_id.."][fatal] missing position (object:getpos() returned nil)")
return
end
self.entity_name=self.name
--is my train still here
if not self.train_id or not self:train() then
atprint("[wagon "..self.unique_id.."] missing train_id, destroying")
self.object:remove()
return
end
if not self.seatp then
self.seatp={}
end
if not self.seatpc then
self.seatpc={}
end
--Legacy: remove infotext since it does not work this way anyways
self.infotext=nil
--custom on_step function
if self.custom_on_step then
self:custom_on_step(self, dtime)
end
--driver control
for seatno, seat in ipairs(self.seats) do
local driver=self.seatp[seatno] and minetest.get_player_by_name(self.seatp[seatno])
if seat.driving_ctrl_access and driver then
advtrains.update_driver_hud(driver:get_player_name(), self:train(), self.wagon_flipped)
end
if driver and driver:get_player_control_bits()~=self.seatpc[seatno] then
local pc=driver:get_player_control()
self.seatpc[seatno]=driver:get_player_control_bits()
if seat.driving_ctrl_access then
--regular driver stand controls
advtrains.on_control_change(pc, self:train(), self.wagon_flipped)
else
-- If on a passenger seat and doors are open, get off when W or D pressed.
local pass = self.seatp[seatno] and minetest.get_player_by_name(self.seatp[seatno])
if pass and self:train().door_open~=0 then
local pc=pass:get_player_control()
if pc.up or pc.down then
self:get_off(seatno)
end
end
end
if pc.aux1 and pc.sneak then
self:get_off(seatno)
end
end
end
local gp=self:train()
local fct=self.wagon_flipped and -1 or 1
--door animation
if self.doors then
if (self.door_anim_timer or 0)<=0 then
local dstate = (gp.door_open or 0) * fct
if dstate ~= self.door_state then
local at
--meaning of the train.door_open field:
-- -1: left doors (rel. to train orientation)
-- 0: closed
-- 1: right doors
--this code produces the following behavior:
-- if changed from 0 to +-1, play open anim. if changed from +-1 to 0, play close.
-- if changed from +-1 to -+1, first close and set 0, then it will detect state change again and run open.
if self.door_state == 0 then
at=self.doors.open[dstate]
self.object:set_animation(at.frames, at.speed or 15, at.blend or 0, false)
self.door_state = dstate
else
at=self.doors.close[self.door_state or 1]--in case it has not been set yet
self.object:set_animation(at.frames, at.speed or 15, at.blend or 0, false)
self.door_state = 0
end
self.door_anim_timer = at.time
end
else
self.door_anim_timer = (self.door_anim_timer or 0) - dtime
end
end
--DisCouple
if self.pos_in_trainparts and self.pos_in_trainparts>1 then
if gp.velocity==0 and not self.lock_couples then
if not self.discouple or not self.discouple.object:getyaw() then
local object=minetest.add_entity(pos, "advtrains:discouple")
if object then
local le=object:get_luaentity()
le.wagon=self
--box is hidden when attached, so unuseful.
--object:set_attach(self.object, "", {x=0, y=0, z=self.wagon_span*10}, {x=0, y=0, z=0})
self.discouple=le
else
atprint("Couldn't spawn DisCouple")
end
end
else
if self.discouple and self.discouple.object:getyaw() then
self.discouple.object:remove()
end
end
end
--for path to be available. if not, skip step
if not gp.path then
self.object:setvelocity({x=0, y=0, z=0})
return
end
if not self.pos_in_train then
--why ever. but better continue next step...
advtrains.update_trainpart_properties(self.train_id)
return
end
local index=advtrains.get_real_path_index(self:train(), self.pos_in_train)
--atprint("trainindex "..gp.index.." wagonindex "..index)
--automatic get_on
--needs to know index and path
if self.door_entry and gp.door_open and gp.door_open~=0 and gp.velocity==0 then
--using the mapping created by the trainlogic globalstep
for i, ino in ipairs(self.door_entry) do
--fct is the flipstate flag from door animation above
local aci = index + ino*fct
local ix1=gp.path[math.floor(aci)]
local ix2=gp.path[math.floor(aci+1)]
-- the two wanted positions are ix1 and ix2 + (2nd-1st rotated by 90deg)
-- (x z) rotated by 90deg is (-z x) (http://stackoverflow.com/a/4780141)
local add = { x = (ix2.z-ix1.z)*gp.door_open, y = 0, z = (ix1.x-ix2.x)*gp.door_open }
local pts1=minetest.pos_to_string(vector.round(vector.add(ix1, add)))
local pts2=minetest.pos_to_string(vector.round(vector.add(ix2, add)))
if advtrains.playersbypts[pts1] then
self:on_rightclick(advtrains.playersbypts[pts1])
end
if advtrains.playersbypts[pts2] then
self:on_rightclick(advtrains.playersbypts[pts2])
end
end
end
--position recalculation
local first_pos=gp.path[math.floor(index)]
local second_pos=gp.path[math.floor(index)+1]
if not first_pos or not second_pos then
--atprint(" object "..self.unique_id.." path end reached!")
self.object:setvelocity({x=0,y=0,z=0})
return
end
--checking for environment collisions(a 3x3 cube around the center)
if not gp.recently_collided_with_env then
local collides=false
for x=-1,1 do
for y=0,2 do
for z=-1,1 do
local node=minetest.get_node_or_nil(vector.add(first_pos, {x=x, y=y, z=z}))
if (advtrains.train_collides(node)) then
collides=true
end
end
end
end
if collides then
if self.collision_count and self.collision_count>10 then
--enable collision mercy to get trains stuck in walls out of walls
--actually do nothing except limiting the velocity to 1
gp.velocity=math.min(gp.velocity, 1)
gp.tarvelocity=math.min(gp.tarvelocity, 1)
else
gp.recently_collided_with_env=true
gp.velocity=2*gp.velocity
gp.movedir=-gp.movedir
gp.tarvelocity=0
self.collision_count=(self.collision_count or 0)+1
end
else
self.collision_count=nil
end
end
--FIX: use index of the wagon, not of the train.
local velocity=(gp.velocity*gp.movedir)/(gp.path_dist[math.floor(index)] or 1)
local acceleration=(gp.last_accel or 0)/(gp.path_dist[math.floor(index)] or 1)
local factor=index-math.floor(index)
local actual_pos={x=first_pos.x-(first_pos.x-second_pos.x)*factor, y=first_pos.y-(first_pos.y-second_pos.y)*factor, z=first_pos.z-(first_pos.z-second_pos.z)*factor,}
local velocityvec={x=(first_pos.x-second_pos.x)*velocity*-1, z=(first_pos.z-second_pos.z)*velocity*-1, y=(first_pos.y-second_pos.y)*velocity*-1}
local accelerationvec={x=(first_pos.x-second_pos.x)*acceleration*-1, z=(first_pos.z-second_pos.z)*acceleration*-1, y=(first_pos.y-second_pos.y)*acceleration*-1}
--some additional positions to determine orientation
local aposfwd=gp.path[math.floor(index+2)]
local aposbwd=gp.path[math.floor(index-1)]
local yaw
if aposfwd and aposbwd then
yaw=advtrains.get_wagon_yaw(aposfwd, second_pos, first_pos, aposbwd, factor)+math.pi--TODO remove when cleaning up
else
yaw=math.atan2((first_pos.x-second_pos.x), (second_pos.z-first_pos.z))
end
if self.wagon_flipped then
yaw=yaw+math.pi
end
self.updatepct_timer=(self.updatepct_timer or 0)-dtime
if not self.old_velocity_vector
or not vector.equals(velocityvec, self.old_velocity_vector)
or not self.old_acceleration_vector
or not vector.equals(accelerationvec, self.old_acceleration_vector)
or self.old_yaw~=yaw
or self.updatepct_timer<=0 then--only send update packet if something changed
self.object:setpos(actual_pos)
self.object:setvelocity(velocityvec)
self.object:setacceleration(accelerationvec)
self.object:setyaw(yaw)
self.updatepct_timer=2
if self.update_animation then
self:update_animation(gp.velocity)
end
end
self.old_velocity_vector=velocityvec
self.old_acceleration_vector=accelerationvec
self.old_yaw=yaw
atprintbm("wagon step", t)
end
function advtrains.get_real_path_index(train, pit)
local pos_in_train_left=pit
local index=train.index
if pos_in_train_left>(index-math.floor(index))*(train.path_dist[math.floor(index)] or 1) then
pos_in_train_left=pos_in_train_left - (index-math.floor(index))*(train.path_dist[math.floor(index)] or 1)
index=math.floor(index)
while pos_in_train_left>(train.path_dist[index-1] or 1) do
pos_in_train_left=pos_in_train_left - (train.path_dist[index-1] or 1)
index=index-1
end
index=index-(pos_in_train_left/(train.path_dist[index-1] or 1))
else
index=index-(pos_in_train_left/(train.path_dist[math.floor(index-1)] or 1))
end
return index
end
function wagon:on_rightclick(clicker)
if not self:ensure_init() then return end
if not clicker or not clicker:is_player() then
return
end
if clicker:get_player_control().aux1 then
--advtrains.dumppath(self:train().path)
--minetest.chat_send_all("at index "..(self:train().index or "nil"))
--advtrains.invert_train(self.train_id)
atprint(dump(self))
return
end
local pname=clicker:get_player_name()
local no=self:get_seatno(pname)
if no then
if self.seat_groups then
local poss={}
local sgr=self.seats[no].group
for _,access in ipairs(self.seat_groups[sgr].access_to) do
if self:check_seat_group_access(pname, access) then
poss[#poss+1]={name=self.seat_groups[access].name, key="sgr_"..access}
end
end
if self.has_inventory and self.get_inventory_formspec then
poss[#poss+1]={name=attrans("Show Inventory"), key="inv"}
end
if self.owner==pname then
poss[#poss+1]={name=attrans("Wagon properties"), key="prop"}
end
if not self.seat_groups[sgr].require_doors_open or self:train().door_open~=0 then
poss[#poss+1]={name=attrans("Get off"), key="off"}
else
if clicker:get_player_control().sneak then
poss[#poss+1]={name=attrans("Get off (forced)"), key="off"}
else
poss[#poss+1]={name=attrans("(Doors closed)"), key="dcwarn"}
end
end
if #poss==0 then
--can't do anything.
elseif #poss==1 then
self:seating_from_key_helper(pname, {[poss[1].key]=true}, no)
else
local form = "size[5,"..1+(#poss).."]"
for pos,ent in ipairs(poss) do
form = form .. "button_exit[0.5,"..(pos-0.5)..";4,1;"..ent.key..";"..ent.name.."]"
end
minetest.show_formspec(pname, "advtrains_seating_"..self.unique_id, form)
end
else
self:get_off(no)
end
else
--do not attach if already on a train
if advtrains.player_to_train_mapping[pname] then return end
if self.seat_groups then
if #self.seats==0 then
if self.has_inventory and self.get_inventory_formspec then
minetest.show_formspec(pname, "advtrains_inv_"..self.unique_id, self:get_inventory_formspec(pname))
end
return
end
local doors_open = self:train().door_open~=0 or clicker:get_player_control().sneak
for _,sgr in ipairs(self.assign_to_seat_group) do
if self:check_seat_group_access(pname, sgr) then
for seatid, seatdef in ipairs(self.seats) do
if seatdef.group==sgr and not self.seatp[seatid] and (not self.seat_groups[sgr].require_doors_open or doors_open) then
self:get_on(clicker, seatid)
return
end
end
end
end
minetest.chat_send_player(pname, attrans("Can't get on: wagon full or doors closed!"))
minetest.chat_send_player(pname, attrans("Use shift+click to open doors forcefully!"))
else
self:show_get_on_form(pname)
end
end
end
function wagon:get_on(clicker, seatno)
if not self.seatp then self.seatp={}end
if not self.seatpc then self.seatpc={}end--player controls in driver stands
if not self.seats[seatno] then return end
local oldno=self:get_seatno(clicker:get_player_name())
if oldno then
atprint("get_on: clearing oldno",seatno)
advtrains.player_to_train_mapping[clicker:get_player_name()]=nil
advtrains.clear_driver_hud(clicker:get_player_name())
self.seatp[oldno]=nil
end
if self.seatp[seatno] and self.seatp[seatno]~=clicker:get_player_name() then
atprint("get_on: throwing off",self.seatp[seatno],"from seat",seatno)
self:get_off(seatno)
end
atprint("get_on: attaching",clicker:get_player_name())
self.seatp[seatno] = clicker:get_player_name()
self.seatpc[seatno] = clicker:get_player_control_bits()
advtrains.player_to_train_mapping[clicker:get_player_name()]=self.train_id
clicker:set_attach(self.object, "", self.seats[seatno].attach_offset, {x=0,y=0,z=0})
clicker:set_eye_offset(self.seats[seatno].view_offset, self.seats[seatno].view_offset)
end
function wagon:get_off_plr(pname)
local no=self:get_seatno(pname)
if no then
self:get_off(no)
end
end
function wagon:get_seatno(pname)
for no, cont in pairs(self.seatp) do
if cont==pname then
return no
end
end
return nil
end
function wagon:get_off(seatno)
if not self.seatp[seatno] then return end
local pname = self.seatp[seatno]
local clicker = minetest.get_player_by_name(pname)
advtrains.player_to_train_mapping[pname]=nil
advtrains.clear_driver_hud(pname)
if clicker then
atprint("get_off: detaching",clicker:get_player_name())
clicker:set_detach()
clicker:set_eye_offset({x=0,y=0,z=0}, {x=0,y=0,z=0})
local objpos=advtrains.round_vector_floor_y(self.object:getpos())
local yaw=self.object:getyaw()
local isx=(yaw < math.pi/4) or (yaw > 3*math.pi/4 and yaw < 5*math.pi/4) or (yaw > 7*math.pi/4)
--abuse helper function
for _,r in ipairs({-1, 1}) do
local p=vector.add({x=isx and r or 0, y=0, z=not isx and r or 0}, objpos)
local offp=vector.add({x=isx and r*2 or 0, y=1, z=not isx and r*2 or 0}, objpos)
if minetest.get_item_group(minetest.get_node(p).name, "platform")>0 then
minetest.after(0.2, function() clicker:setpos(offp) end)
end
end
end
self.seatp[seatno]=nil
self.seatpc[seatno]=nil
end
function wagon:show_get_on_form(pname)
if not self.initialized then return end
if #self.seats==0 then
if self.has_inventory and self.get_inventory_formspec then
minetest.show_formspec(pname, "advtrains_inv_"..self.unique_id, self:get_inventory_formspec(pname))
end
return
end
local form, comma="size[5,8]label[0.5,0.5;"..attrans("Select seat:").."]textlist[0.5,1;4,6;seat;", ""
for seatno, seattbl in ipairs(self.seats) do
local addtext, colorcode="", ""
if self.seatp and self.seatp[seatno] then
colorcode="#FF0000"
addtext=" ("..self.seatp[seatno]..")"
end
form=form..comma..colorcode..seattbl.name..addtext
comma=","
end
form=form..";0,false]"
if self.has_inventory and self.get_inventory_formspec then
form=form.."button_exit[1,7;3,1;inv;"..attrans("Show Inventory").."]"
end
minetest.show_formspec(pname, "advtrains_geton_"..self.unique_id, form)
end
function wagon:show_wagon_properties(pname)
if not self.seat_groups then
return
end
if not self.seat_access then
self.seat_access={}
end
--[[
fields: seat access: empty: everyone
checkbox: lock couples
button: save
]]
local form="size[5,"..(#self.seat_groups*1.5+5).."]"
local at=0
for sgr,sgrdef in pairs(self.seat_groups) do
local text = attrans("Access to @1",sgrdef.name)
form=form.."field[0.5,"..(0.5+at*1.5)..";4,1;sgr_"..sgr..";"..text..";"..(self.seat_access[sgr] or "").."]"
at=at+1
end
form=form.."checkbox[0,"..(at*1.5)..";lock_couples;"..attrans("Lock couples")..";"..(self.lock_couples and "true" or "false").."]"
form=form.."button_exit[0.5,"..(1+at*1.5)..";4,1;save;"..attrans("Save wagon properties").."]"
minetest.show_formspec(pname, "advtrains_prop_"..self.unique_id, form)
end
minetest.register_on_player_receive_fields(function(player, formname, fields)
local uid=string.match(formname, "^advtrains_geton_(.+)$")
if uid then
for _,wagon in pairs(minetest.luaentities) do
if wagon.is_wagon and wagon.initialized and wagon.unique_id==uid then
if fields.inv then
if wagon.has_inventory and wagon.get_inventory_formspec then
minetest.show_formspec(player:get_player_name(), "advtrains_inv_"..uid, wagon:get_inventory_formspec(player:get_player_name()))
end
elseif fields.seat then
local val=minetest.explode_textlist_event(fields.seat)
if val and val.type~="INV" and not wagon.seatp[player:get_player_name()] then
--get on
wagon:get_on(player, val.index)
--will work with the new close_formspec functionality. close exactly this formspec.
minetest.show_formspec(player:get_player_name(), formname, "")
end
end
end
end
end
uid=string.match(formname, "^advtrains_seating_(.+)$")
if uid then
for _,wagon in pairs(minetest.luaentities) do
if wagon.is_wagon and wagon.initialized and wagon.unique_id==uid then
local pname=player:get_player_name()
local no=wagon:get_seatno(pname)
if no then
if wagon.seat_groups then
wagon:seating_from_key_helper(pname, fields, no)
end
end
end
end
end
uid=string.match(formname, "^advtrains_prop_(.+)$")
if uid then
for _,wagon in pairs(minetest.luaentities) do
if wagon.is_wagon and wagon.initialized and wagon.unique_id==uid then
local pname=player:get_player_name()
if pname~=wagon.owner then
return true
end
if fields.save or not fields.quit then
for sgr,sgrdef in pairs(wagon.seat_groups) do
if fields["sgr_"..sgr] then
local fcont = fields["sgr_"..sgr]
wagon.seat_access[sgr] = fcont~="" and fcont or nil
end
end
if fields.lock_couples then
wagon.lock_couples = fields.lock_couples == "true"
end
end
end
end
end
end)
function wagon:seating_from_key_helper(pname, fields, no)
local sgr=self.seats[no].group
for _,access in ipairs(self.seat_groups[sgr].access_to) do
if fields["sgr_"..access] and self:check_seat_group_access(pname, access) then
for seatid, seatdef in ipairs(self.seats) do
if seatdef.group==access and not self.seatp[seatid] then
self:get_on(minetest.get_player_by_name(pname), seatid)
return
end
end
end
end
if fields.inv and self.has_inventory and self.get_inventory_formspec then
minetest.show_formspec(player:get_player_name(), "advtrains_inv_"..self.unique_id, wagon:get_inventory_formspec(player:get_player_name()))
end
if fields.prop and self.owner==pname then
self:show_wagon_properties(pname)
end
if fields.dcwarn then
minetest.chat_send_player(pname, attrans("Doors are closed! Use shift-rightclick to open doors with force and get off!"))
end
if fields.off then
self:get_off(no)
end
end
function wagon:check_seat_group_access(pname, sgr)
if not self.seat_access then
return true
end
local sae=self.seat_access[sgr]
if not sae or sae=="" then
return true
end
for name in string.gmatch(sae, "%S+") do
if name==pname then
return true
end
end
return false
end
function wagon:reattach_all()
if not self.seatp then self.seatp={} end
for seatno, pname in pairs(self.seatp) do
local p=minetest.get_player_by_name(pname)
if p then
self:get_on(p ,seatno)
end
end
end
function advtrains.register_wagon(sysname, prototype, desc, inv_img)
setmetatable(prototype, {__index=wagon})
minetest.register_entity(":advtrains:"..sysname,prototype)
minetest.register_craftitem(":advtrains:"..sysname, {
description = desc,
inventory_image = inv_img,
wield_image = inv_img,
stack_max = 1,
on_place = function(itemstack, placer, pointed_thing)
if not pointed_thing.type == "node" then
return
end
local node=minetest.get_node_or_nil(pointed_thing.under)
if not node then atprint("[advtrains]Ignore at placer position") return itemstack end
local nodename=node.name
if(not advtrains.is_track_and_drives_on(nodename, prototype.drives_on)) then
atprint("no track here, not placing.")
return itemstack
end
local conn1=advtrains.get_track_connections(node.name, node.param2)
local id=advtrains.create_new_train_at(pointed_thing.under, advtrains.dirCoordSet(pointed_thing.under, conn1))
local ob=minetest.add_entity(pointed_thing.under, "advtrains:"..sysname)
if not ob then
atprint("couldn't add_entity, aborting")
end
local le=ob:get_luaentity()
le.owner=placer:get_player_name()
local wagon_uid=le:init_new_instance(id, {})
advtrains.add_wagon_to_train(le, id)
if not minetest.setting_getbool("creative_mode") then
itemstack:take_item()
end
return itemstack
end,
})
end
--[[
wagons can define update_animation(self, velocity) if they have a speed-dependent animation
this function will be called when the velocity vector changes or every 2 seconds.
]]
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