diff options
Diffstat (limited to 'advtrains_interlocking/lzb.lua')
| -rw-r--r-- | advtrains_interlocking/lzb.lua | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/advtrains_interlocking/lzb.lua b/advtrains_interlocking/lzb.lua index 16724c5..1746cc0 100644 --- a/advtrains_interlocking/lzb.lua +++ b/advtrains_interlocking/lzb.lua @@ -1,6 +1,18 @@ -- lzb.lua -- Enforced and/or automatic train override control, obeying signals + +local function approach_callback(parpos, train_id, train, index) + local pos = advtrains.round_vector_floor_y(parpos) + + local node=pnode or advtrains.ndb.get_node(pos) + local ndef=minetest.registered_nodes[node.name] + if ndef and ndef.advtrains and ndef.advtrains.on_train_approach then + ndef.advtrains.on_train_approach(pos, train_id, train, index) + end +end + + --[[ Documentation of train.lzb table train.lzb = { @@ -10,9 +22,13 @@ train.lzb = { travwspd = warning speed res. oncoming = table containing oncoming signals, in order of appearance on the path { - pos = position of the signal (not the IP!) + pos = position of the signal (not the IP!). Can be nil idx = where this is on the path spd = speed allowed to pass (determined dynamically) + npr = <boolean> "No permanent restriction" If true, this is only a punctual restriction. + speed_restriction is not set then, and train can accelerate after passing point + This is (as of Nov 2017) used by "lines" to brake the train down to 2 when approaching a stop + The actual "stop" command is given when the train passes the rail (on_train_enter callback) } } each step, for every item in "oncoming", we need to determine the location to start braking (+ some safety margin) @@ -67,6 +83,9 @@ local function look_ahead(id, train) spd = 0, }) else + -- run callback, if exists + approach_callback(pos, id, train, trav) + -- check for signal local asp, spos = il.db.get_ip_signal_asp(pts, cn) --atdebug("trav: ",pos, cn, asp, spos, "travsht=", lzb.travsht) @@ -207,6 +226,18 @@ function advtrains.interlocking.lzb_invalidate(train) invalidate(train) end +-- Add an (extra) lzb control point that is not a permanent restriction (see above) +-- (permanent restrictions are only to be imposed by signal ip's) +function advtrains.interlocking.lzb_add_oncoming_npr(train, idx, spd) + local lzb = train.lzb + + table.insert(lzb.oncoming, { + idx = idx, + spd = spd, + npr = true, + }) +end + advtrains.te_register_on_new_path(function(id, train) invalidate(train) |