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Diffstat (limited to 'advtrains/wagons.lua')
| -rw-r--r-- | advtrains/wagons.lua | 1449 |
1 files changed, 1449 insertions, 0 deletions
diff --git a/advtrains/wagons.lua b/advtrains/wagons.lua new file mode 100644 index 0000000..f918571 --- /dev/null +++ b/advtrains/wagons.lua @@ -0,0 +1,1449 @@ +-- wagon.lua +-- Holds all logic related to wagons +-- From now on, wagons are, just like trains, just entries in a table +-- All data that is static is stored in the entity prototype (self). +-- A copy of the entity prototype is always available inside wagon_prototypes +-- All dynamic data is stored in the (new) wagons table +-- An entity is ONLY spawned by update_trainpart_properties when it finds it useful. +-- Only data that are only important to the entity itself are stored in the luaentity + +-- TP delay when getting off wagon +local GETOFF_TP_DELAY = 0.5 + +local IGNORE_WORLD = advtrains.IGNORE_WORLD + +advtrains.wagons = {} +advtrains.wagon_prototypes = {} +advtrains.wagon_objects = {} + +local unload_wgn_range = advtrains.wagon_load_range + 32 +function advtrains.wagon_outside_range(pos) -- returns true if the object is outside of unload_wgn_range of any player + return not advtrains.position_in_range(pos, unload_wgn_range) +end + +local setting_show_ids = minetest.settings:get_bool("advtrains_show_ids") + +-- +function advtrains.create_wagon(wtype, owner) + local new_id=advtrains.random_id() + while advtrains.wagons[new_id] do new_id=advtrains.random_id() end + local wgn = {} + wgn.type = wtype + wgn.seatp = {} + wgn.owner = owner + wgn.id = new_id + ---wgn.train_id = train_id --- will get this via update_trainpart_properties + advtrains.wagons[new_id] = wgn + --atdebug("Created new wagon:",wgn) + return new_id +end + +local function make_inv_name(uid) + return "detached:advtrains_wgn_"..uid +end + + +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=1, y=1}, + textures = {"black.png"}, + is_wagon=true, + wagon_span=1,--how many index units of space does this wagon consume + wagon_width=3, -- Wagon width in meters + has_inventory=false, + static_save=false, +} + + +function wagon:train() + local data = advtrains.wagons[self.id] + return advtrains.trains[data.train_id] +end + + +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}) +end + +local function invcallback(id, pname, rtallow, rtfail) + local data = advtrains.wagons[id] + if data and advtrains.check_driving_couple_protection(pname, data.owner, data.whitelist) then + return rtallow + end + return rtfail +end + +function wagon:set_id(wid) + self.id = wid + self.initialized = true + + local data = advtrains.wagons[self.id] + advtrains.wagon_objects[self.id] = self.object + + --atdebug("Created wagon entity:",self.name," w_id",wid," t_id",data.train_id) + + if self.has_inventory then + --to be used later + local inv=minetest.get_inventory({type="detached", name="advtrains_wgn_"..self.id}) + -- create inventory, if not yet created + if not inv then + inv=minetest.create_detached_inventory("advtrains_wgn_"..self.id, { + allow_move = function(inv, from_list, from_index, to_list, to_index, count, player) + return invcallback(wid, player:get_player_name(), count, 0) + end, + allow_put = function(inv, listname, index, stack, player) + return invcallback(wid, player:get_player_name(), stack:get_count(), 0) + end, + allow_take = function(inv, listname, index, stack, player) + return invcallback(wid, player:get_player_name(), stack:get_count(), 0) + end + }) + if data.ser_inv then + advtrains.deserialize_inventory(data.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 + end + self.door_anim_timer=0 + self.door_state=0 + + minetest.after(0.2, function() self:reattach_all() end) + + + + if self.set_textures then + self:set_textures(data) + end + + if self.custom_on_activate then + self:custom_on_activate() + end +end + +function wagon:get_staticdata() + return "STATIC" +end + +function wagon:ensure_init() + -- Note: A wagon entity won't exist when there's no train, because the train is + -- the thing that actually creates the entity + -- Train not being set just means that this will happen as soon as the train calls update_trainpart_properties. + if self.initialized and self.id then + local data = advtrains.wagons[self.id] + if data and data.train_id and self:train() then + if self.noninitticks then self.noninitticks=nil end + return true + end + end + if not self.noninitticks then + atwarn("wagon",self.id,"uninitialized init=",self.initialized) + self.noninitticks=0 + end + self.noninitticks=self.noninitticks+1 + if self.noninitticks>20 then + atwarn("wagon",self.id,"uninitialized, removing") + self:destroy() + else + self.object:set_velocity({x=0,y=0,z=0}) + end + return false +end + +function wagon:train() + local data = advtrains.wagons[self.id] + return advtrains.trains[data.train_id] +end + +-- Remove the wagon +function wagon:on_punch(puncher, time_from_last_punch, tool_capabilities, direction) + if not self:ensure_init() then return end + + local data = advtrains.wagons[self.id] + + if not puncher or not puncher:is_player() then + return + end + if data.owner and puncher:get_player_name()~=data.owner and (not minetest.check_player_privs(puncher, {train_admin = true })) then + minetest.chat_send_player(puncher:get_player_name(), attrans("This wagon is owned by @1, you can't destroy it.", data.owner)); + 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 + local itemstack = puncher:get_wielded_item() + -- WARNING: This part of the API is guaranteed to change! DO NOT USE! + if self.set_livery and itemstack:get_name() == "bike:painter" then + self:set_livery(puncher, itemstack, data) + return + end + -- check whether wagon has an inventory. Is is empty? + if self.has_inventory then + local inv=minetest.get_inventory({type="detached", name="advtrains_wgn_"..self.id}) + if not inv then -- inventory is not initialized when wagon was never loaded - should never happen + atwarn("Destroying wagon with inventory, but inventory is not found? Shouldn't happen!") + return + end + for listname, _ in pairs(inv:get_lists()) do + if not inv:is_empty(listname) then + minetest.chat_send_player(puncher:get_player_name(), attrans("The wagon's inventory is not empty!")); + return + end + end + end + + if #(self:train().trainparts)>1 then + minetest.chat_send_player(puncher:get_player_name(), attrans("Wagon needs to be decoupled from other wagons in order to destroy it.")); + return + end + + 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 +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 + if self.id then + local data = advtrains.wagons[self.id] + if not data then + atwarn("wagon:destroy(): data is not set!") + return + end + + if self.custom_on_destroy then + self.custom_on_destroy(self) + end + + for seat,_ in pairs(data.seatp) do + self:get_off(seat) + end + + if data.train_id and self:train() then + advtrains.remove_train(data.train_id) + advtrains.wagons[self.id]=nil + if self.discouple then self.discouple.object:remove() end--will have no effect on unloaded objects + end + end + --atdebug("[wagon ", self.id, "]: destroying") + + self.object:remove() + return true +end + +function wagon:is_driver_stand(seat) + if self.seat_groups then + return (seat.driving_ctrl_access or self.seat_groups[seat.group].driving_ctrl_access) + else + return seat.driving_ctrl_access + end + +end + +function wagon:on_step(dtime) + if not self:ensure_init() then return end + + if advtrains.is_no_action() then + self.object:remove() + return + end + + local t=os.clock() + local pos = self.object:get_pos() + local data = advtrains.wagons[self.id] + + if not pos then + --atdebug("["..self.id.."][fatal] missing position (object:getpos() returned nil)") + return + end + + if not data.seatp then + data.seatp={} + end + if not self.seatpc then + self.seatpc={} + end + + local train=self:train() + + local is_in_loaded_area = advtrains.is_node_loaded(pos) + + --custom on_step function + if self.custom_on_step then + self:custom_on_step(dtime, data, train) + end + + --driver control + for seatno, seat in ipairs(self.seats) do + local pname=data.seatp[seatno] + local driver=pname and minetest.get_player_by_name(pname) + local has_driverstand = pname and advtrains.check_driving_couple_protection(pname, data.owner, data.whitelist) + has_driverstand = has_driverstand and self:is_driver_stand(seat) + if has_driverstand and driver then + advtrains.update_driver_hud(driver:get_player_name(), self:train(), data.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(), data.wagon_flipped) + --bordcom + if pc.sneak and pc.jump then + self:show_bordcom(data.seatp[seatno]) + end + --sound horn when required + if self.horn_sound and pc.aux1 and not pc.sneak and not self.horn_handle then + self.horn_handle = minetest.sound_play(self.horn_sound, { + object = self.object, + gain = 1.0, -- default + max_hear_distance = 128, -- default, uses an euclidean metric + loop = true, + }) + elseif not pc.aux1 and self.horn_handle then + minetest.sound_stop(self.horn_handle) + self.horn_handle = nil + end + else + -- If on a passenger seat and doors are open, get off when W or D pressed. + local pass = data.seatp[seatno] and minetest.get_player_by_name(data.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=train.text_outside or "" + if setting_show_ids then + outside = outside .. "\nT:" .. data.train_id .. " W:" .. self.id .. " O:" .. data.owner + end + + + --show off-track information in outside text instead of notifying the whole server about this + if train.off_track then + outside = outside .."\n!!! Train off track !!!" + end + + if self.infotext_cache~=outside then + self.object:set_properties({infotext=outside}) + self.infotext_cache=outside + end + + local fct=data.wagon_flipped and -1 or 1 + + --door animation + if self.doors then + if (self.door_anim_timer or 0)<=0 then + local dstate = (train.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 + if self.doors.open.sound then minetest.sound_play(self.doors.open.sound, {object = self.object}) end + 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 + if self.doors.close.sound then minetest.sound_play(self.doors.close.sound, {object = self.object}) end + 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 + + --for path to be available. if not, skip step + if not train.path or train.no_step then + self.object:set_velocity({x=0, y=0, z=0}) + self.object:set_acceleration({x=0, y=0, z=0}) + return + end + if not data.pos_in_train then + return + end + + -- Calculate new position, yaw and direction vector + local index = advtrains.path_get_index_by_offset(train, train.index, -data.pos_in_train) + local pos, yaw, npos, npos2 = advtrains.path_get_interpolated(train, index) + local vdir = vector.normalize(vector.subtract(npos2, npos)) + + --automatic get_on + --needs to know index and path + if self.door_entry and train.door_open and train.door_open~=0 and train.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 = advtrains.path_get_index_by_offset(train, index, ino*fct) + local ix1, ix2 = advtrains.path_get_adjacent(train, aci) + -- 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)*train.door_open, y = 0, z = (ix1.x-ix2.x)*train.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 + + --checking for environment collisions(a 3x3 cube around the center) + if not IGNORE_WORLD and is_in_loaded_area and not train.recently_collided_with_env then + local collides=false + local exh = self.extent_h or 1 + local exv = self.extent_v or 2 + for x=-exh,exh do + for y=0,exv do + for z=-exh,exh do + local node=minetest.get_node_or_nil(vector.add(npos, {x=x, y=y, z=z})) + if (advtrains.train_collides(node)) then + collides=true + end + end + end + end + if collides then + -- screw collision mercy + train.recently_collided_with_env=true + train.velocity=0 + advtrains.atc.train_reset_command(train) + end + end + + --DisCouple + -- FIX: Need to do this after the yaw calculation + if is_in_loaded_area and data.pos_in_trainparts and data.pos_in_trainparts>1 then + if train.velocity==0 then + if not self.discouple or not self.discouple.object:get_yaw() then + atprint(self.id,"trying to spawn discouple") + local dcpl_pos = vector.add(pos, {y=0, x=-math.sin(yaw)*self.wagon_span, z=math.cos(yaw)*self.wagon_span}) + local object=minetest.add_entity(dcpl_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 + end + end + else + if self.discouple and self.discouple.object:get_yaw() then + self.discouple.object:remove() + atprint(self.id," removing discouple") + end + end + end + + --FIX: use index of the wagon, not of the train. + local velocity = train.velocity * advtrains.global_slowdown + local acceleration = (train.acceleration or 0) * (advtrains.global_slowdown*advtrains.global_slowdown) + local velocityvec = vector.multiply(vdir, velocity) + local accelerationvec = vector.multiply(vdir, acceleration) + + if data.wagon_flipped then + yaw=yaw+math.pi + end + + -- this timer runs off every 2 seconds. + self.updatepct_timer=(self.updatepct_timer or 0)-dtime + local updatepct_timer_elapsed = self.updatepct_timer<=0 + + if updatepct_timer_elapsed then + --restart timer + self.updatepct_timer=2 + -- perform checks that are not frequently needed + + -- unload entity if out of range (because relevant pr won't be merged in engine) + -- This is a WORKAROUND! + local players_in = false + for sno,pname in pairs(data.seatp) do + if minetest.get_player_by_name(pname) then + -- Fix: If the RTT is too high, a wagon might be recognized out of range even if a player sits in it + -- (client updates position not fast enough) + players_in = true + break + end + end + if not players_in then + if advtrains.wagon_outside_range(pos) then + --atdebug("wagon",self.id,"unloading (too far away)") + -- Workaround until minetest engine deletes attached sounds + if self.sound_loop_handle then + minetest.sound_stop(self.sound_loop_handle) + end + self.object:remove() + end + end + end + + 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 updatepct_timer_elapsed then--only send update packet if something changed + + self.object:set_pos(pos) + self.object:set_velocity(velocityvec) + self.object:set_acceleration(accelerationvec) + + if #self.seats > 0 and self.old_yaw ~= yaw then + if not self.player_yaw then + self.player_yaw = {} + end + if not self.old_yaw then + self.old_yaw=yaw + end + for _,name in pairs(data.seatp) do + local p = minetest.get_player_by_name(name) + if p then + if not self.turning then + -- save player looking direction offset + self.player_yaw[name] = p:get_look_horizontal()-self.old_yaw + end + -- set player looking direction using calculated offset + p:set_look_horizontal((self.player_yaw[name] or 0)+yaw) + end + end + self.turning = true + elseif self.old_yaw == yaw then + -- train is no longer turning + self.turning = false + end + + if self.object.set_rotation then + local pitch = math.atan2(vdir.y, math.hypot(vdir.x, vdir.z)) + if data.wagon_flipped then + pitch = -pitch + end + self.object:set_rotation({x=pitch, y=yaw, z=0}) + else + self.object:set_yaw(yaw) + end + + if self.update_animation then + self:update_animation(train.velocity, self.old_velocity) + end + if self.custom_on_velocity_change then + self:custom_on_velocity_change(train.velocity, self.old_velocity or 0, dtime) + end + -- remove discouple object, because it will be in a wrong location + if not updatepct_timer_elapsed and self.discouple then + self.discouple.object:remove() + end + end + + + self.old_velocity_vector=velocityvec + self.old_velocity = train.velocity + self.old_acceleration_vector=accelerationvec + self.old_yaw=yaw + atprintbm("wagon step", t) +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 + + local data = advtrains.wagons[self.id] + + 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 and advtrains.check_driving_couple_protection(pname, data.owner, data.whitelist) then + poss[#poss+1]={name=attrans("Show Inventory"), key="inv"} + end + if self.seat_groups[sgr].driving_ctrl_access and advtrains.check_driving_couple_protection(pname, data.owner, data.whitelist) then + poss[#poss+1]={name=attrans("Onboard Computer"), key="bordcom"} + end + if data.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.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 and advtrains.check_driving_couple_protection(pname, data.owner, data.whitelist) then + minetest.show_formspec(pname, "advtrains_inv_"..self.id, self:get_inventory_formspec(pname, make_inv_name(self.id))) + end + return + end + + local doors_open = self:train().door_open~=0 or clicker:get_player_control().sneak + local allow, rsn=false, "Wagon has no seats!" + for _,sgr in ipairs(self.assign_to_seat_group) do + allow, rsn = self:check_seat_group_access(pname, sgr) + if allow then + for seatid, seatdef in ipairs(self.seats) do + if seatdef.group==sgr then + if (not self.seat_groups[sgr].require_doors_open or doors_open) then + if not data.seatp[seatid] then + self:get_on(clicker, seatid) + return + else + rsn="Wagon is full." + end + else + rsn="Doors are closed! (try holding sneak key!)" + end + end + end + end + end + minetest.chat_send_player(pname, attrans("Can't get on: "..rsn)) + else + self:show_get_on_form(pname) + end + end +end + +function wagon:get_on(clicker, seatno) + + local data = advtrains.wagons[self.id] + + if not data.seatp then data.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()) + data.seatp[oldno]=nil + end + if data.seatp[seatno] and data.seatp[seatno]~=clicker:get_player_name() then + atprint("get_on: throwing off",data.seatp[seatno],"from seat",seatno) + self:get_off(seatno) + end + atprint("get_on: attaching",clicker:get_player_name()) + data.seatp[seatno] = clicker:get_player_name() + self.seatpc[seatno] = clicker:get_player_control_bits() + advtrains.player_to_train_mapping[clicker:get_player_name()]=data.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) + + local data = advtrains.wagons[self.id] + + for no, cont in pairs(data.seatp) do + if cont==pname then + return no + end + end + return nil +end +function wagon:get_off(seatno) + + local data = advtrains.wagons[self.id] + + if not data.seatp[seatno] then return end + local pname = data.seatp[seatno] + local clicker = minetest.get_player_by_name(pname) + advtrains.player_to_train_mapping[pname]=nil + advtrains.clear_driver_hud(pname) + data.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 train=self:train() + --code as in step - automatic get on + if self.door_entry and train.door_open and train.door_open~=0 and train.velocity==0 and train.index and train.path then + local index = advtrains.path_get_index_by_offset(train, train.index, -data.pos_in_train) + for i, ino in ipairs(self.door_entry) do + --atdebug("using door-based",i,ino) + local fct=data.wagon_flipped and -1 or 1 + local aci = advtrains.path_get_index_by_offset(train, index, ino*fct) + local ix1, ix2 = advtrains.path_get_adjacent(train, aci) + local d = train.door_open + if self.wagon_width then + d = d * math.floor(self.wagon_width/2) + end + -- 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)*d, y = 0, z = (ix1.x-ix2.x)*d } + local oadd = { x = (ix2.z-ix1.z)*(d+train.door_open), y = 1, z = (ix1.x-ix2.x)*(d+train.door_open)} + local platpos=vector.round(vector.add(ix1, add)) + local offpos=vector.round(vector.add(ix1, oadd)) + + --atdebug("platpos:", platpos, "offpos:", offpos) + if minetest.get_item_group(minetest.get_node(platpos).name, "platform")>0 then + minetest.after(GETOFF_TP_DELAY, function() clicker:set_pos(offpos) end) + --atdebug("tp",offpos) + return + end + --atdebug("nope") + end + end + --if not door_entry, or paths missing, fall back to old method + --atdebug("using fallback") + 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) + local offp + --abuse helper function + for _,r in ipairs({-1, 1}) do + --atdebug("offset",r) + local p=vector.add({x=isx and r or 0, y=0, z=not isx and r or 0}, objpos) + offp=vector.add({x=isx and r*2 or 0, y=1, z=not isx and r*2 or 0}, objpos) + --atdebug("platpos:", p, "offpos:", offp) + if minetest.get_item_group(minetest.get_node(p).name, "platform")>0 then + minetest.after(GETOFF_TP_DELAY, function() clicker:set_pos(offp) end) + --atdebug("tp",offp) + return + end + end + --atdebug("nope") + + end +end +function wagon:show_get_on_form(pname) + if not self.initialized then return end + + local data = advtrains.wagons[self.id] + if #self.seats==0 then + if self.has_inventory and self.get_inventory_formspec and advtrains.check_driving_couple_protection(pname, data.owner, data.whitelist) then + minetest.show_formspec(pname, "advtrains_inv_"..self.id, self:get_inventory_formspec(pname, make_inv_name(self.id))) + 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 data.seatp and data.seatp[seatno] then + colorcode="#FF0000" + addtext=" ("..data.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.id, form) +end +function wagon:show_wagon_properties(pname) + --[[ + fields: + field: driving/couple whitelist + button: save + ]] + local data = advtrains.wagons[self.id] + local form="size[5,5]" + form = form .. "field[0.5,1;4.5,1;whitelist;Allow these players to access your wagon:;"..minetest.formspec_escape(data.whitelist or "").."]" + form = form .. "field[0.5,2;4.5,1;roadnumber;Wagon road number:;"..minetest.formspec_escape(data.roadnumber or "").."]" + local fc = "" + if data.fc then + fc = table.concat(data.fc, "!") + end + form = form .. "field[0.5,3;4.5,1;fc;Freight Code:;"..fc.."]" + if data.fc then + if not data.fcind then data.fcind = 1 end + if data.fcind > 1 then + form=form.."button[0.5,3.5;1,1;fcp;prev FC]" + end + form=form.."label[1.5,3.5;Current FC:]" + + local cur = data.fc[data.fcind] or "" + form=form.."label[1.5,3.75;"..minetest.formspec_escape(cur).."]" + form=form.."button[3.5,3.5;1,1;fcn;next FC]" + end + form=form.."button_exit[0.5,4.5;4,1;save;"..attrans("Save wagon properties").."]" + minetest.show_formspec(pname, "advtrains_prop_"..self.id, form) +end + +--BordCom +local function checkcouple(ent) + if not ent or not ent:getyaw() then + return nil + end + local le = ent:get_luaentity() + if not le or not le.is_couple then + return nil + end + return le +end +local function checklock(pname, own1, own2, wl1, wl2) + return advtrains.check_driving_couple_protection(pname, own1, wl1) + or advtrains.check_driving_couple_protection(pname, own2, wl2) +end + +local function split(str, sep) + local fields = {} + local pattern = string.format("([^%s]+)", sep) + str:gsub(pattern, function(c) fields[#fields+1] = c end) + return fields +end + +function wagon.set_fc(data, fcstr) + data.fc = split(fcstr, "!") + if not data.fcind then + data.fcind = 1 + elseif data.fcind > #data.fc then + data.fcind = #data.fc + end +end + +function wagon.prev_fc(data) + if data.fcind > 1 then + data.fcind = data.fcind -1 + end + if data.fcind == 1 and data.fcrev then + data.fcrev = nil + end +end + +function wagon.next_fc(data) + if not data.fc then return end + if data.fcrev then + wagon.prev_fc(data) + return + end + if data.fcind < #data.fc then + data.fcind = data.fcind + 1 + else + data.fcind = 1 + end + if data.fcind == #data.fc and data.fc[data.fcind] == "?" then + data.fcrev = true + wagon.prev_fc(data) + return + end +end + +function advtrains.get_cur_fc(data) + if not ( data.fc and data.fcind ) then + return "" + end + return data.fc[data.fcind] or "" +end + +function advtrains.step_fc(data) + wagon.next_fc(data) +end + + + + + +function wagon:show_bordcom(pname) + if not self:train() then return end + local train = self:train() + local data = advtrains.wagons[self.id] + + local form = "size[11,9]label[0.5,0;AdvTrains Boardcom v0.1]" + form=form.."textarea[0.5,1.5;7,1;text_outside;"..attrans("Text displayed outside on train")..";"..(minetest.formspec_escape(train.text_outside or "")).."]" + form=form.."textarea[0.5,3;7,1;text_inside;"..attrans("Text displayed inside train")..";"..(minetest.formspec_escape(train.text_inside or "")).."]" + form=form.."field[7.5,1.75;3,1;line;"..attrans("Line")..";"..(minetest.formspec_escape(train.line or "")).."]" + form=form.."field[7.5,3.25;3,1;routingcode;"..attrans("Routingcode")..";"..(minetest.formspec_escape(train.routingcode or "")).."]" + --row 5 : train overview and autocoupling + if train.velocity==0 then + form=form.."label[0.5,4;Train overview /coupling control:]" + linhei=5 + local pre_own, pre_wl, owns_any = nil, nil, minetest.check_player_privs(pname, "train_admin") + for i, tpid in ipairs(train.trainparts) do + local ent = advtrains.wagons[tpid] + if ent then + local roadnumber = ent.roadnumber or "" + form = form .. string.format("button[%d,%d;%d,%d;%s;%s]", i, linhei, 1, 0.2, "wgprp"..i, roadnumber) + local ename = ent.type + form = form .. "item_image["..i..","..(linhei+0.5)..";1,1;"..ename.."]" + if i~=1 then + if checklock(pname, ent.owner, pre_own, ent.whitelist, pre_wl) then + form = form .. "image_button["..(i-0.5)..","..(linhei+1.5)..";1,1;advtrains_discouple.png;dcpl_"..i..";]" + end + end + if i == data.pos_in_trainparts then + form = form .. "box["..(i-0.1)..","..(linhei+0.4)..";1,1;green]" + end + pre_own = ent.owner + pre_wl = ent.whitelist + owns_any = owns_any or (not ent.owner or ent.owner==pname) + end + end + + if train.movedir==1 then + form = form .. "label["..(#train.trainparts+1)..","..(linhei)..";-->]" + else + form = form .. "label[0.5,"..(linhei)..";<--]" + end + --check cpl_eid_front and _back of train + local couple_front = checkcouple(train.cpl_front) + local couple_back = checkcouple(train.cpl_back) + if couple_front then + form = form .. "image_button[0.5,"..(linhei+1)..";1,1;advtrains_couple.png;cpl_f;]" + end + if couple_back then + form = form .. "image_button["..(#train.trainparts+0.5)..","..(linhei+1)..";1,1;advtrains_couple.png;cpl_b;]" + end + + else + form=form.."label[0.5,4.5;Train overview / coupling control is only shown when the train stands.]" + end + form = form .. "button[0.5,8;3,1;save;Save]" + + -- Interlocking functionality: If the interlocking module is loaded, you can set the signal aspect + -- from inside the train + if advtrains.interlocking and train.lzb and #train.lzb.checkpoints > 0 then + local i=1 + while train.lzb.checkpoints[i] do + local oci = train.lzb.checkpoints[i] + if oci.udata and oci.udata.signal_pos then + if advtrains.interlocking.db.get_sigd_for_signal(oci.udata.signal_pos) then + form = form .. "button[4.5,8;5,1;ilrs;Remote Routesetting]" + break + end + end + i=i+1 + end + if train.ars_disable then + form = form .. "button[4.5,7;5,1;ilarsenable;Clear 'Disable ARS' flag]" + end + end + + minetest.show_formspec(pname, "advtrains_bordcom_"..self.id, form) +end +function wagon:handle_bordcom_fields(pname, formname, fields) + local data = advtrains.wagons[self.id] + + local seatno=self:get_seatno(pname) + if not seatno or not self.seat_groups[self.seats[seatno].group].driving_ctrl_access or not advtrains.check_driving_couple_protection(pname, data.owner, data.whitelist) then + return + end + local train = self:train() + if not train then return end + if fields.text_outside then + if fields.text_outside~="" then + train.text_outside=fields.text_outside + else + train.text_outside=nil + end + end + if fields.text_inside then + if fields.text_inside~="" then + train.text_inside=fields.text_inside + else + train.text_inside=nil + end + end + if fields.line then + if fields.line~="" then + if fields.line ~= train.line then + train.line=fields.line + minetest.after(0, advtrains.invalidate_path, train.id) + end + else + train.line=nil + end + end + if fields.routingcode then + if fields.routingcode~="" then + if fields.routingcode ~= train.routingcode then + train.routingcode=fields.routingcode + minetest.after(0, advtrains.invalidate_path, train.id) + end + else + train.routingcode=nil + end + end + for i, tpid in ipairs(train.trainparts) do + if fields["dcpl_"..i] then + advtrains.safe_decouple_wagon(tpid, pname) + elseif fields["wgprp"..i] then + for _,wagon in pairs(minetest.luaentities) do + if wagon.is_wagon and wagon.initialized and wagon.id==tpid and data.owner==pname then + wagon:show_wagon_properties(pname) + return + end + end + end + end + --check cpl_eid_front and _back of train + local couple_front = checkcouple(train.cpl_front) + local couple_back = checkcouple(train.cpl_back) + + if fields.cpl_f and couple_front then + couple_front:on_rightclick(pname) + end + if fields.cpl_b and couple_back then + couple_back:on_rightclick(pname) + end + + -- Interlocking functionality: If the interlocking module is loaded, you can set the signal aspect + -- from inside the train + if advtrains.interlocking then + if fields.ilrs and train.lzb and #train.lzb.checkpoints > 0 then + local i=1 + while train.lzb.checkpoints[i] do + local oci = train.lzb.checkpoints[i] + if oci.udata and oci.udata.signal_pos then + local sigd = advtrains.interlocking.db.get_sigd_for_signal(oci.udata.signal_pos) + if sigd then + advtrains.interlocking.show_signalling_form(sigd, pname) + return + end + end + i=i+1 + end + end + if fields.ilarsenable then + advtrains.interlocking.ars_set_disable(train, false) + end + end + + + if not fields.quit then + self:show_bordcom(pname) + end +end + +minetest.register_on_player_receive_fields(function(player, formname, fields) + local uid=string.match(formname, "^advtrains_geton_(.+)$") + if uid then + for _,wagon in pairs(minetest.luaentities) do + if wagon.is_wagon and wagon.initialized and wagon.id==uid then + local data = advtrains.wagons[wagon.id] + if fields.inv then + if wagon.has_inventory and wagon.get_inventory_formspec then + minetest.show_formspec(player:get_player_name(), "advtrains_inv_"..uid, wagon:get_inventory_formspec(player:get_player_name(), make_inv_name(uid))) + end + elseif fields.seat then + local val=minetest.explode_textlist_event(fields.seat) + if val and val.type~="INV" and not data.seatp[player:get_player_name()] then + --get on + wagon:get_on(player, val.index) + --will work with the new close_formspec functionality. close exactly this formspec. + minetest.show_formspec(player:get_player_name(), formname, "") + end + end + end + end + end + uid=string.match(formname, "^advtrains_seating_(.+)$") + if uid then + for _,wagon in pairs(minetest.luaentities) do + if wagon.is_wagon and wagon.initialized and wagon.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_(.+)$") + if uid then + local pname=player:get_player_name() + local data = advtrains.wagons[uid] + if pname~=data.owner and not minetest.check_player_privs(pname, {train_admin = true}) then + return true + end + if fields.save or not fields.quit then + if fields.whitelist then + data.whitelist = fields.whitelist + end + if fields.roadnumber then + data.roadnumber = fields.roadnumber + end + if fields.fc then + wagon.set_fc(data, fields.fc) + end + if fields.fcp then + wagon.prev_fc(data) + wagon.show_wagon_properties({id=uid}, pname) + end + if fields.fcn then + advtrains.step_fc(data) + wagon.show_wagon_properties({id=uid}, pname) + end + end + end + uid=string.match(formname, "^advtrains_bordcom_(.+)$") + if uid then + for _,wagon in pairs(minetest.luaentities) do + if wagon.is_wagon and wagon.initialized and wagon.id==uid then + wagon:handle_bordcom_fields(player:get_player_name(), formname, fields) + end + end + end + uid=string.match(formname, "^advtrains_inv_(.+)$") + if uid then + local pname=player:get_player_name() + local data = advtrains.wagons[uid] + if fields.prop and data.owner==pname then + for _,wagon in pairs(minetest.luaentities) do + if wagon.is_wagon and wagon.initialized and wagon.id==uid and data.owner==pname then + wagon:show_wagon_properties(pname) + --wagon:handle_bordcom_fields(player:get_player_name(), formname, fields) + end + end + end + end +end) +function wagon:seating_from_key_helper(pname, fields, no) + local data = advtrains.wagons[self.id] + 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 data.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.close_formspec(pname, "advtrains_seating_"..self.id) + minetest.show_formspec(pname, "advtrains_inv_"..self.id, self:get_inventory_formspec(pname, make_inv_name(self.id))) + end + if fields.prop and data.owner==pname then + minetest.close_formspec(pname, "advtrains_seating_"..self.id) + self:show_wagon_properties(pname) + end + if fields.bordcom and self.seat_groups[sgr].driving_ctrl_access and advtrains.check_driving_couple_protection(pname, data.owner, data.whitelist) then + minetest.close_formspec(pname, "advtrains_seating_"..self.id) + self:show_bordcom(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) + local data = advtrains.wagons[self.id] + if self.seat_groups[sgr].driving_ctrl_access and not (advtrains.check_driving_couple_protection(pname, data.owner, data.whitelist)) then + return false, "Not allowed to access a driver stand!" + end + if self.seat_groups[sgr].driving_ctrl_access then + advtrains.log("Drive", pname, self.object:getpos(), self:train().text_outside) + end + return true +end +function wagon:reattach_all() + local data = advtrains.wagons[self.id] + if not data.seatp then data.seatp={} end + for seatno, pname in pairs(data.seatp) do + local p=minetest.get_player_by_name(pname) + if p then + self:get_on(p ,seatno) + end + end +end + +local function check_twagon_owner(train, b_first, pname) + local wtp = b_first and 1 or #train.trainparts + local wid = train.trainparts[wtp] + local wdata = advtrains.wagons[wid] + if wdata then + return advtrains.check_driving_couple_protection(pname, wdata.owner, wdata.whitelist) + end + return false +end + +function advtrains.safe_couple_trains(id1, id2, t1f, t2f, pname, try_run,v1,v2) + + if pname and not minetest.check_player_privs(pname, "train_operator") then + minetest.chat_send_player(pname, "Missing train_operator privilege") + return false + end + + local train1=advtrains.trains[id1] + local train2=advtrains.trains[id2] + + if not advtrains.train_ensure_init(id1, train1) + or not advtrains.train_ensure_init(id2, train2) then + return false + end + local wck_t1, wck_t2 + if pname then + wck_t1 = check_twagon_owner(train1, t1f, pname) + wck_t2 = check_twagon_owner(train2, t2f, pname) + end + if (wck_t1 or wck_t2) or not pname then + if not v1 then + v1 = 0 + end + if not v2 then + v2 = 0 + end + if try_run then + return true + end + if t1f then + if t2f then + v1 = -v1 + advtrains.invert_train(id1) + advtrains.do_connect_trains(id1, id2, v1+v2) + else + advtrains.do_connect_trains(id2, id1, v1+v2) + end + else + if t2f then + advtrains.do_connect_trains(id1, id2, v1+v2) + else + v2 = -v2 + advtrains.invert_train(id2) + advtrains.do_connect_trains(id1, id2, v1+v2) + end + end + return true + else + minetest.chat_send_player(pname, "You must be authorized for at least one wagon.") + return false + end +end + + +function advtrains.safe_decouple_wagon(w_id, pname, try_run) + if not minetest.check_player_privs(pname, "train_operator") then + minetest.chat_send_player(pname, "Missing train_operator privilege") + return false + end + local data = advtrains.wagons[w_id] + + local dpt = data.pos_in_trainparts + if not dpt or dpt <= 1 then + return false + end + local train = advtrains.trains[data.train_id] + local owid = train.trainparts[dpt-1] + local owdata = advtrains.wagons[owid] + + if not owdata then + return + end + + if not checklock(pname, data.owner, owdata.owner, data.whitelist, owdata.whitelist) then + minetest.chat_send_player(pname, "Not allowed to do this.") + return false + end + + if try_run then + return true + end + + advtrains.log("Discouple", pname, train.last_pos, train.text_outside) + advtrains.split_train_at_wagon(w_id) + return true +end + + + +function advtrains.get_wagon_prototype(data) + local wt = data.type + if not wt then + -- LEGACY: Field was called "entity_name" in previous versions + wt = data.entity_name + data.type = data.entity_name + data.entity_name = nil + end + if not wt or not advtrains.wagon_prototypes[wt] then + atwarn("Unable to load wagon type",wt,", using placeholder") + wt="advtrains:wagon_placeholder" + end + return wt, advtrains.wagon_prototypes[wt] +end + +function advtrains.standard_inventory_formspec(self, pname, invname) + --[[minetest.chat_send_player(pname, string.format("self=%s, pname=%s, invname=%s", self, pname, invname)) + for k,v in pairs(self) do + minetest.chat_send_player(pname, string.format("%s=%s", k,v)) + end + minetest.chat_send_player(pname, string.format("***%s***", self.object:get_pos()))--]] + local data = advtrains.wagons[self.id] + local r = "size[8,11]".. + "list["..invname..";box;0,0;8,3;]" + if data.owner==pname then + r = r .. "button_exit[0,9;4,1;prop;"..attrans("Wagon properties").."]" + end + r = r .. "list[current_player;main;0,5;8,4;]".. + "listring[]" + return r +end + +function advtrains.register_wagon(sysname_p, prototype, desc, inv_img, nincreative) + local sysname = sysname_p + if not string.match(sysname, ":") then + sysname = "advtrains:"..sysname_p + end + setmetatable(prototype, {__index=wagon}) + minetest.register_entity(":"..sysname,prototype) + advtrains.wagon_prototypes[sysname] = prototype + + minetest.register_craftitem(":"..sysname, { + description = desc, + inventory_image = inv_img, + wield_image = inv_img, + stack_max = 1, + + groups = { not_in_creative_inventory = nincreative and 1 or 0}, + + on_place = function(itemstack, placer, pointed_thing) + if not pointed_thing.type == "node" then + return + end + local pname = placer:get_player_name() + + 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_operator = true }) then + minetest.chat_send_player(pname, "You don't have the train_operator privilege.") + return itemstack + end + if not minetest.check_player_privs(placer, {train_admin = true }) and minetest.is_protected(pointed_thing.under, placer:get_player_name()) then + return itemstack + end + local tconns=advtrains.get_track_connections(node.name, node.param2) + local yaw = placer:get_look_horizontal() + local plconnid = advtrains.yawToClosestConn(yaw, tconns) + + local prevpos = advtrains.get_adjacent_rail(pointed_thing.under, tconns, plconnid, prototype.drives_on) + if not prevpos then + minetest.chat_send_player(pname, "The track you are trying to place the wagon on is not long enough!") + return + end + + local wid = advtrains.create_wagon(sysname, pname) + + local id=advtrains.create_new_train_at(pointed_thing.under, plconnid, 0, {wid}) + + if not advtrains.is_creative(pname) then + itemstack:take_item() + end + return itemstack + end, + }) +end + +-- Placeholder wagon. Will be spawned whenever a mod is missing +advtrains.register_wagon("advtrains:wagon_placeholder", { + visual="sprite", + textures = {"advtrains_wagon_placeholder.png"}, + collisionbox = {-0.3,-0.3,-0.3, 0.3,0.3,0.3}, + visual_size = {x=0.7, y=0.7}, + initial_sprite_basepos = {x=0, y=0}, + drives_on = advtrains.all_tracktypes, + max_speed = 5, + seats = { + }, + seat_groups = { + }, + assign_to_seat_group = {}, + wagon_span=1, + drops={}, +}, "Wagon placeholder", "advtrains_wagon_placeholder.png", true) + |