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-- Signal API implementation
local DANGER = {
main = 0,
shunt = false,
}
advtrains.interlocking.DANGER = DANGER
advtrains.interlocking.GENERIC_FREE = {
main = -1,
shunt = false,
dst = false,
}
advtrains.interlocking.FULL_FREE = {
main = -1,
shunt = false,
proceed_as_main = true,
}
local function convert_aspect_if_necessary(asp)
if type(asp.main) == "table" then
local newasp = {}
if asp.main.free then
newasp.main = asp.main.speed
else
newasp.main = 0
end
if asp.dst and asp.dst.free then
newasp.dst = asp.dst.speed
else
newasp.dst = 0
end
newasp.proceed_as_main = asp.shunt.proceed_as_main
newasp.shunt = asp.shunt.free
-- Note: info table not transferred, it's not used right now
return newasp
end
return asp
end
advtrains.interlocking.signal_convert_aspect_if_necessary = convert_aspect_if_necessary
function advtrains.interlocking.update_signal_aspect(tcbs, skipdst)
if tcbs.signal then
local asp = tcbs.aspect or DANGER
advtrains.interlocking.signal_set_aspect(tcbs.signal, asp, skipdst)
end
end
function advtrains.interlocking.signal_can_dig(pos)
return not advtrains.interlocking.db.get_sigd_for_signal(pos)
end
function advtrains.interlocking.signal_after_dig(pos)
-- clear influence point
advtrains.interlocking.signal_clear_aspect(pos)
advtrains.distant.unassign_all(pos, true)
end
-- should be called when aspect has changed on this signal.
function advtrains.interlocking.signal_on_aspect_changed(pos)
local ipts, iconn = advtrains.interlocking.db.get_ip_by_signalpos(pos)
if not ipts then return end
local ipos = minetest.string_to_pos(ipts)
-- FIXME: invalidate_all_paths_ahead does not appear to always work as expected
--advtrains.invalidate_all_paths_ahead(ipos)
minetest.after(0, advtrains.invalidate_all_paths, ipos)
end
function advtrains.interlocking.signal_rc_handler(pos, node, player, itemstack, pointed_thing)
local pname = player:get_player_name()
local control = player:get_player_control()
if control.aux1 then
advtrains.interlocking.show_ip_form(pos, pname)
return
end
advtrains.interlocking.show_signal_form(pos, node, pname)
end
function advtrains.interlocking.show_signal_form(pos, node, pname)
local sigd = advtrains.interlocking.db.get_sigd_for_signal(pos)
if sigd then
advtrains.interlocking.show_signalling_form(sigd, pname)
else
local ndef = minetest.registered_nodes[node.name]
if ndef.advtrains and ndef.advtrains.set_aspect then
-- permit to set aspect manually
local function callback(pname, aspect)
advtrains.interlocking.signal_set_aspect(pos, aspect)
end
local isasp = advtrains.interlocking.signal_get_aspect(pos, node)
advtrains.interlocking.show_signal_aspect_selector(
pname,
ndef.advtrains.supported_aspects,
pos, callback,
isasp)
else
--static signal - only IP
advtrains.interlocking.show_ip_form(pos, pname)
end
end
end
-- Returns the aspect the signal at pos is supposed to show
function advtrains.interlocking.signal_get_supposed_aspect(pos)
local sigd = advtrains.interlocking.db.get_sigd_for_signal(pos)
if sigd then
local tcbs = advtrains.interlocking.db.get_tcbs(sigd)
if tcbs.aspect then
return convert_aspect_if_necessary(tcbs.aspect)
end
end
return DANGER;
end
local players_assign_ip = {}
local function ipmarker(ipos, connid)
local node_ok, conns, rhe = advtrains.get_rail_info_at(ipos, advtrains.all_tracktypes)
if not node_ok then return end
local yaw = advtrains.dir_to_angle(conns[connid].c)
-- using tcbmarker here
local obj = minetest.add_entity(vector.add(ipos, {x=0, y=0.2, z=0}), "advtrains_interlocking:tcbmarker")
if not obj then return end
obj:set_yaw(yaw)
obj:set_properties({
textures = { "at_il_signal_ip.png" },
})
end
-- shows small info form for signal IP state/assignment
-- only_notset: show only if it is not set yet (used by signal tcb assignment)
function advtrains.interlocking.show_ip_form(pos, pname, only_notset)
if not minetest.check_player_privs(pname, "interlocking") then
return
end
local form = "size[7,5]label[0.5,0.5;Signal at "..minetest.pos_to_string(pos).."]"
form = form .. advtrains.interlocking.make_signal_formspec_tabheader(pname, pos, 7, 2)
advtrains.interlocking.db.check_for_duplicate_ip(pos)
local pts, connid = advtrains.interlocking.db.get_ip_by_signalpos(pos)
if pts then
form = form.."label[0.5,1.5;Influence point is set at "..pts.."/"..connid.."]"
form = form.."button_exit[0.5,2.5; 5,1;set;Move]"
form = form.."button_exit[0.5,3.5; 5,1;clear;Clear]"
local ipos = minetest.string_to_pos(pts)
ipmarker(ipos, connid)
else
form = form.."label[0.5,1.5;Influence point is not set.]"
form = form.."label[0.5,2.0;It is recommended to set an influence point.]"
form = form.."label[0.5,2.5;This is the point where trains will obey the signal.]"
form = form.."button_exit[0.5,3.5; 5,1;set;Set]"
end
if not only_notset or not pts then
minetest.show_formspec(pname, "at_il_ipassign_"..minetest.pos_to_string(pos), form)
end
end
minetest.register_on_player_receive_fields(function(player, formname, fields)
local pname = player:get_player_name()
if advtrains.interlocking.handle_signal_formspec_tabheader_fields(pname, fields) then
return true
end
if not minetest.check_player_privs(pname, {train_operator=true, interlocking=true}) then
return
end
local pts = string.match(formname, "^at_il_ipassign_([^_]+)$")
local pos
if pts then
pos = minetest.string_to_pos(pts)
end
if pos then
if fields.set then
advtrains.interlocking.signal_init_ip_assign(pos, pname)
elseif fields.clear then
advtrains.interlocking.db.clear_ip_by_signalpos(pos)
end
end
end)
-- inits the signal IP assignment process
function advtrains.interlocking.signal_init_ip_assign(pos, pname)
if not minetest.check_player_privs(pname, "interlocking") then
minetest.chat_send_player(pname, "Insufficient privileges to use this!")
return
end
--remove old IP
--advtrains.interlocking.db.clear_ip_by_signalpos(pos)
minetest.chat_send_player(pname, "Configuring Signal: Please look in train's driving direction and punch rail to set influence point.")
players_assign_ip[pname] = pos
end
minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
local pname = player:get_player_name()
if not minetest.check_player_privs(pname, "interlocking") then
return
end
-- IP assignment
local signalpos = players_assign_ip[pname]
if signalpos then
if vector.distance(pos, signalpos)<=50 then
local node_ok, conns, rhe = advtrains.get_rail_info_at(pos, advtrains.all_tracktypes)
if node_ok and #conns == 2 then
local yaw = player:get_look_horizontal()
local plconnid = advtrains.yawToClosestConn(yaw, conns)
-- add assignment if not already present.
local pts = advtrains.roundfloorpts(pos)
if not advtrains.interlocking.db.get_ip_signal_asp(pts, plconnid) then
advtrains.interlocking.db.set_ip_signal(pts, plconnid, signalpos)
ipmarker(pos, plconnid)
minetest.chat_send_player(pname, "Configuring Signal: Successfully set influence point")
else
minetest.chat_send_player(pname, "Configuring Signal: Influence point of another signal is already present!")
end
else
minetest.chat_send_player(pname, "Configuring Signal: This is not a normal two-connection rail! Aborted.")
end
else
minetest.chat_send_player(pname, "Configuring Signal: Node is too far away. Aborted.")
end
players_assign_ip[pname] = nil
end
end)
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