diff options
Diffstat (limited to 'advtrains/wagons.lua')
| -rw-r--r-- | advtrains/wagons.lua | 900 |
1 files changed, 900 insertions, 0 deletions
diff --git a/advtrains/wagons.lua b/advtrains/wagons.lua new file mode 100644 index 0000000..567b560 --- /dev/null +++ b/advtrains/wagons.lua @@ -0,0 +1,900 @@ +--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,
+});
+minetest.register_privilege("train_operator", {
+ description = "Player may operate trains and switch signals. Given by default. Revoke to prevent players from griefing automated subway systems.",
+ give_to_singleplayer= true,
+ default= true,
+});
+
+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()
+ return advtrains.pcall(function()
+ 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)
+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)
+ return advtrains.pcall(function()
+ 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.settings:get_bool("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, hold Sneak and left-click 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)
+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)
+ return advtrains.pcall(function()
+ 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])
+ local has_driverstand=seat.driving_ctrl_access and self.seatp[seatno] and minetest.check_player_privs(self.seatp[seatno], {train_operator=true})
+ if has_driverstand and driver then
+ advtrains.update_driver_hud(driver:get_player_name(), self:train(), self.wagon_flipped)
+ elseif driver then
+ --only show the inside text
+ local inside=self:train().text_inside or ""
+ advtrains.set_trainhud(driver:get_player_name(), inside)
+ 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 has_driverstand 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
+
+ --check infotext
+ local outside=self:train().text_outside or ""
+ if self.object:get_properties().infotext~=outside then
+ self.object:set_properties({infotext=outside})
+ 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=vector.round(vector.add(ix1, add))
+ local pts2=vector.round(vector.add(ix2, add))
+ if minetest.get_item_group(minetest.get_node(pts1).name, "platform")>0 then
+ local ckpts={
+ pts1,
+ pts2,
+ vector.add(pts1, {x=0, y=1, z=0}),
+ vector.add(pts2, {x=0, y=1, z=0}),
+ }
+ for _,ckpos in ipairs(ckpts) do
+ local cpp=minetest.pos_to_string(ckpos)
+ if advtrains.playersbypts[cpp] then
+ self:on_rightclick(advtrains.playersbypts[cpp])
+ end
+ end
+ 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)
+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)
+ return advtrains.pcall(function()
+ 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 Sneak+rightclick to bypass closed doors!"))
+ else
+ self:show_get_on_form(pname)
+ end
+ 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)
+ self.seatp[seatno]=nil
+ self.seatpc[seatno]=nil
+ 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 gp=self:train()
+ --code as in step - automatic get on
+ if self.door_entry and gp.door_open and gp.door_open~=0 and gp.velocity==0 and gp.index and gp.path then
+ local index=advtrains.get_real_path_index(gp, self.pos_in_train)
+ --using the mapping created by the trainlogic globalstep
+ for i, ino in ipairs(self.door_entry) do
+ local aci = index + ino*(self.wagon_flipped and -1 or 1)
+ 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)
+ -- multiplied by 2 here, to place off on platform, y of add is 1.
+ local add = { x = (ix2.z-ix1.z)*gp.door_open, y = 0, z = (ix1.x-ix2.x)*gp.door_open}
+ local oadd = { x = (ix2.z-ix1.z)*gp.door_open*2, y = 1, z = (ix1.x-ix2.x)*gp.door_open*2}
+ local platpos=vector.round(vector.add(ix1, add))
+ local offpos=vector.round(vector.add(ix1, oadd))
+ atprint("platpos:", platpos, "offpos:", offpos)
+ if minetest.get_item_group(minetest.get_node(platpos).name, "platform")>0 then
+ minetest.after(0.2, function() clicker:setpos(offpos) end)
+ return
+ end
+ end
+ else--if not door_entry, or paths missing, fall back to old method
+ 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)
+ return
+ end
+ end
+ end
+ end
+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)
+ local numsgr=0
+ if self.seat_groups then
+ numsgr=#self.seat_groups
+ 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,"..(numsgr*1.5+7).."]"
+ local at=0
+ if self.seat_groups then
+ 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
+ end
+ form=form.."checkbox[0,"..(at*1.5)..";lock_couples;"..attrans("Lock couples")..";"..(self.lock_couples and "true" or "false").."]"
+ if self:train() then --just in case
+ form=form.."field[0.5,"..(1.5+at*1.5)..";4,1;text_outside;"..attrans("Text displayed outside on train")..";"..(self:train().text_outside or "").."]"
+ form=form.."field[0.5,"..(2.5+at*1.5)..";4,1;text_inside;"..attrans("Text displayed inside train")..";"..(self:train().text_inside or "").."]"
+ end
+ form=form.."button_exit[0.5,"..(3+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)
+ return advtrains.pcall(function()
+ 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
+ if fields.text_outside then
+ if fields.text_outside~="" then
+ wagon:train().text_outside=fields.text_outside
+ else
+ wagon:train().text_outside=nil
+ end
+ end
+ if fields.text_inside then
+ if fields.text_inside~="" then
+ wagon:train().text_inside=fields.text_inside
+ else
+ wagon:train().text_inside=nil
+ end
+ end
+
+ 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 Sneak+rightclick to ignore the closed doors 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)
+ return advtrains.pcall(function()
+ 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
+ if not minetest.check_player_privs(placer, {train_place = true }) and minetest.is_protected(pointed_thing.under, placer:get_player_name()) then
+ minetest.record_protection_violation(pointed_thing.under, placer:get_player_name())
+ return
+ 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.settings:get_bool("creative_mode") then
+ itemstack:take_item()
+ end
+ return itemstack
+
+ end)
+ 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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