aboutsummaryrefslogtreecommitdiff
path: root/advtrains/atc.lua
diff options
context:
space:
mode:
Diffstat (limited to 'advtrains/atc.lua')
-rw-r--r--advtrains/atc.lua312
1 files changed, 312 insertions, 0 deletions
diff --git a/advtrains/atc.lua b/advtrains/atc.lua
new file mode 100644
index 0000000..5f1f64d
--- /dev/null
+++ b/advtrains/atc.lua
@@ -0,0 +1,312 @@
+--atc.lua
+--registers and controls the ATC system
+
+local atc={}
+-- ATC persistence table. advtrains.atc is created by init.lua when it loads the save file.
+atc.controllers = {}
+function atc.load_data(data)
+ local temp = data and data.controllers or {}
+ --transcode atc controller data to node hashes: table access times for numbers are far less than for strings
+ for pts, data in pairs(temp) do
+ if type(pts)=="number" then
+ pts=minetest.pos_to_string(minetest.get_position_from_hash(pts))
+ end
+ atc.controllers[pts] = data
+ end
+end
+function atc.save_data()
+ return {controllers = atc.controllers}
+end
+--contents: {command="...", arrowconn=0-15 where arrow points}
+
+--general
+
+function atc.send_command(pos, par_tid)
+ local pts=minetest.pos_to_string(pos)
+ if atc.controllers[pts] then
+ --atprint("Called send_command at "..pts)
+ local train_id = par_tid or advtrains.detector.on_node[pts]
+ if train_id then
+ if advtrains.trains[train_id] then
+ --atprint("send_command inside if: "..sid(train_id))
+ atc.train_reset_command(train_id)
+ local arrowconn=atc.controllers[pts].arrowconn
+ local train=advtrains.trains[train_id]
+ for index, ppos in pairs(train.path) do
+ if vector.equals(advtrains.round_vector_floor_y(ppos), pos) then
+ advtrains.trains[train_id].atc_arrow =
+ vector.equals(
+ advtrains.dirCoordSet(pos, arrowconn),
+ advtrains.round_vector_floor_y(train.path[index+train.movedir])
+ )
+ advtrains.trains[train_id].atc_command=atc.controllers[pts].command
+ atprint("Sending ATC Command: ", atc.controllers[pts].command)
+ return true
+ end
+ end
+ atwarn("ATC rail at", pos, ": Rail not on train's path! Can't determine arrow direction. Assuming +!")
+ advtrains.trains[train_id].atc_arrow=true
+ advtrains.trains[train_id].atc_command=atc.controllers[pts].command
+ atprint("Sending ATC Command: ", atc.controllers[pts].command)
+ else
+ atwarn("ATC rail at", pos, ": Sending command failed: The train",train_id,"does not exist. This seems to be a bug.")
+ end
+ else
+ atwarn("ATC rail at", pos, ": Sending command failed: There's no train at this position. This seems to be a bug.")
+ end
+ else
+ atwarn("ATC rail at", pos, ": Sending command failed: Entry for controller not found.")
+ atwarn("ATC rail at", pos, ": Please visit controller and click 'Save'")
+ end
+ return false
+end
+
+function atc.train_reset_command(train_id)
+ advtrains.trains[train_id].atc_command=nil
+ advtrains.trains[train_id].atc_delay=0
+ advtrains.trains[train_id].atc_brake_target=nil
+ advtrains.trains[train_id].atc_wait_finish=nil
+ advtrains.trains[train_id].atc_arrow=nil
+end
+
+--nodes
+local idxtrans={static=1, mesecon=2, digiline=3}
+local apn_func=function(pos, node)
+ advtrains.ndb.update(pos, node)
+ local meta=minetest.get_meta(pos)
+ if meta then
+ meta:set_string("infotext", attrans("ATC controller, unconfigured."))
+ meta:set_string("formspec", atc.get_atc_controller_formspec(pos, meta))
+ end
+end
+
+advtrains.register_tracks("default", {
+ nodename_prefix="advtrains:dtrack_atc",
+ texture_prefix="advtrains_dtrack_atc",
+ models_prefix="advtrains_dtrack",
+ models_suffix=".b3d",
+ shared_texture="advtrains_dtrack_shared_atc.png",
+ description=attrans("ATC controller"),
+ formats={},
+ get_additional_definiton = function(def, preset, suffix, rotation)
+ return {
+ after_place_node=apn_func,
+ after_dig_node=function(pos)
+ return advtrains.pcall(function()
+ advtrains.invalidate_all_paths(pos)
+ advtrains.ndb.clear(pos)
+ local pts=minetest.pos_to_string(pos)
+ atc.controllers[pts]=nil
+ end)
+ end,
+ on_receive_fields = function(pos, formname, fields, player)
+ return advtrains.pcall(function()
+ if advtrains.is_protected(pos, player:get_player_name()) then
+ minetest.record_protection_violation(pos, player:get_player_name())
+ return
+ end
+ local meta=minetest.get_meta(pos)
+ if meta then
+ if not fields.save then
+ --maybe only the dropdown changed
+ if fields.mode then
+ meta:set_string("mode", idxtrans[fields.mode])
+ if fields.mode=="digiline" then
+ meta:set_string("infotext", attrans("ATC controller, mode @1\nChannel: @2", fields.mode, meta:get_string("command")) )
+ else
+ meta:set_string("infotext", attrans("ATC controller, mode @1\nCommand: @2", fields.mode, meta:get_string("command")) )
+ end
+ meta:set_string("formspec", atc.get_atc_controller_formspec(pos, meta))
+ end
+ return
+ end
+ meta:set_string("mode", idxtrans[fields.mode])
+ meta:set_string("command", fields.command)
+ meta:set_string("command_on", fields.command_on)
+ meta:set_string("channel", fields.channel)
+ if fields.mode=="digiline" then
+ meta:set_string("infotext", attrans("ATC controller, mode @1\nChannel: @2", fields.mode, meta:get_string("command")) )
+ else
+ meta:set_string("infotext", attrans("ATC controller, mode @1\nCommand: @2", fields.mode, meta:get_string("command")) )
+ end
+ meta:set_string("formspec", atc.get_atc_controller_formspec(pos, meta))
+
+ local pts=minetest.pos_to_string(pos)
+ local _, conn1=advtrains.get_rail_info_at(pos, advtrains.all_tracktypes)
+ atc.controllers[pts]={command=fields.command, arrowconn=conn1}
+ if advtrains.detector.on_node[pts] then
+ atc.send_command(pos)
+ end
+ end
+ end)
+ end,
+ advtrains = {
+ on_train_enter = function(pos, train_id)
+ atc.send_command(pos)
+ end,
+ },
+ }
+ end
+}, advtrains.trackpresets.t_30deg_straightonly)
+
+
+function atc.get_atc_controller_formspec(pos, meta)
+ local mode=tonumber(meta:get_string("mode")) or 1
+ local command=meta:get_string("command")
+ local command_on=meta:get_string("command_on")
+ local channel=meta:get_string("channel")
+ local formspec="size[8,6]"..
+ "dropdown[0,0;3;mode;static,mesecon,digiline;"..mode.."]"
+ if mode<3 then
+ formspec=formspec.."field[0.5,1.5;7,1;command;"..attrans("Command")..";"..minetest.formspec_escape(command).."]"
+ if tonumber(mode)==2 then
+ formspec=formspec.."field[0.5,3;7,1;command_on;"..attrans("Command (on)")..";"..minetest.formspec_escape(command_on).."]"
+ end
+ else
+ formspec=formspec.."field[0.5,1.5;7,1;channel;"..attrans("Digiline channel")..";"..minetest.formspec_escape(channel).."]"
+ end
+ return formspec.."button_exit[0.5,4.5;7,1;save;"..attrans("Save").."]"
+end
+
+--from trainlogic.lua train step
+local matchptn={
+ ["SM"]=function(id, train)
+ train.tarvelocity=train.max_speed
+ return 2
+ end,
+ ["S([0-9]+)"]=function(id, train, match)
+ train.tarvelocity=tonumber(match)
+ return #match+1
+ end,
+ ["B([0-9]+)"]=function(id, train, match)
+ if train.velocity>tonumber(match) then
+ train.atc_brake_target=tonumber(match)
+ if train.tarvelocity>train.atc_brake_target then
+ train.tarvelocity=train.atc_brake_target
+ end
+ end
+ return #match+1
+ end,
+ ["W"]=function(id, train)
+ train.atc_wait_finish=true
+ return 1
+ end,
+ ["D([0-9]+)"]=function(id, train, match)
+ train.atc_delay=tonumber(match)
+ return #match+1
+ end,
+ ["R"]=function(id, train)
+ if train.velocity<=0 then
+ train.movedir=train.movedir*-1
+ train.atc_arrow = not train.atc_arrow
+ else
+ atwarn(sid(id), attrans("ATC Reverse command warning: didn't reverse train, train moving!"))
+ end
+ return 1
+ end,
+ ["O([LRC])"]=function(id, train, match)
+ local tt={L=-1, R=1, C=0}
+ local arr=train.atc_arrow and 1 or -1
+ train.door_open = tt[match]*arr*train.movedir
+ return 2
+ end,
+}
+
+function atc.execute_atc_command(id, train)
+ --strip whitespaces
+ local command=string.match(train.atc_command, "^%s*(.*)$")
+
+
+ if string.match(command, "^%s*$") then
+ train.atc_command=nil
+ return
+ end
+ --conditional statement?
+ local is_cond, cond_applies, compare
+ local cond, rest=string.match(command, "^I([%+%-])(.+)$")
+ if cond then
+ is_cond=true
+ if cond=="+" then
+ cond_applies=train.atc_arrow
+ end
+ if cond=="-" then
+ cond_applies=not train.atc_arrow
+ end
+ else
+ cond, compare, rest=string.match(command, "^I([<>]=?)([0-9]+)(.+)$")
+ if cond and compare then
+ is_cond=true
+ if cond=="<" then
+ cond_applies=train.velocity<tonumber(compare)
+ end
+ if cond==">" then
+ cond_applies=train.velocity>tonumber(compare)
+ end
+ if cond=="<=" then
+ cond_applies=train.velocity<=tonumber(compare)
+ end
+ if cond==">=" then
+ cond_applies=train.velocity>=tonumber(compare)
+ end
+ end
+ end
+ if is_cond then
+ atprint("Evaluating if statement: "..command)
+ atprint("Cond: "..(cond or "nil"))
+ atprint("Applies: "..(cond_applies and "true" or "false"))
+ atprint("Rest: "..rest)
+ --find end of conditional statement
+ local nest, pos, elsepos=0, 1
+ while nest>=0 do
+ if pos>#rest then
+ atwarn(sid(id), attrans("ATC command syntax error: I statement not closed: @1",command))
+ atc.train_reset_command(id)
+ return
+ end
+ local char=string.sub(rest, pos, pos)
+ if char=="I" then
+ nest=nest+1
+ end
+ if char==";" then
+ nest=nest-1
+ end
+ if nest==0 and char=="E" then
+ elsepos=pos+0
+ end
+ pos=pos+1
+ end
+ if not elsepos then elsepos=pos-1 end
+ if cond_applies then
+ command=string.sub(rest, 1, elsepos-1)..string.sub(rest, pos)
+ else
+ command=string.sub(rest, elsepos+1, pos-2)..string.sub(rest, pos)
+ end
+ atprint("Result: "..command)
+ train.atc_command=command
+ atc.execute_atc_command(id, train)
+ return
+ else
+ for pattern, func in pairs(matchptn) do
+ local match=string.match(command, "^"..pattern)
+ if match then
+ local patlen=func(id, train, match)
+
+ atprint("Executing: "..string.sub(command, 1, patlen))
+
+ train.atc_command=string.sub(command, patlen+1)
+ if train.atc_delay<=0 and not train.atc_wait_finish then
+ --continue (recursive, cmds shouldn't get too long, and it's a end-recursion.)
+ atc.execute_atc_command(id, train)
+ end
+ return
+ end
+ end
+ end
+ atwarn(sid(id), attrans("ATC command parse error: Unknown command: @1", command))
+ atc.train_reset_command(id)
+end
+
+
+
+--move table to desired place
+advtrains.atc=atc