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-rw-r--r--advtrains_interlocking/database.lua37
-rw-r--r--advtrains_interlocking/init.lua1
-rw-r--r--advtrains_interlocking/train_related.lua2
3 files changed, 36 insertions, 4 deletions
diff --git a/advtrains_interlocking/database.lua b/advtrains_interlocking/database.lua
index 7a439f0..e9e484c 100644
--- a/advtrains_interlocking/database.lua
+++ b/advtrains_interlocking/database.lua
@@ -87,7 +87,7 @@ so the route is set to the signal at the right end. The train is taking the exit
having touched the right TC.
]]--
-local TRAVERSER_LIMIT = 100
+local TRAVERSER_LIMIT = 1000
local ildb = {}
@@ -212,10 +212,10 @@ end
-- This function will actually handle the node that is in connid direction from the node at pos
-- so, this needs the conns of the node at pos, since these are already calculated
-local function traverser(found_tcbs, pos, conns, connid, count)
+local function traverser(found_tcbs, pos, conns, connid, count, brk_when_found_n)
local adj_pos, adj_connid, conn_idx, nextrail_y, next_conns = advtrains.get_adjacent_rail(pos, conns, connid, advtrains.all_tracktypes)
if not adj_pos then
- -- end of track
+ atdebug("Traverser found end-of-track at",pos, connid)
return
end
-- look whether there is a TCB here
@@ -237,7 +237,10 @@ local function traverser(found_tcbs, pos, conns, connid, count)
local counter_hit = false
for nconnid, nconn in ipairs(next_conns) do
if adj_connid ~= nconnid then
- counter_hit = counter_hit or traverser(found_tcbs, adj_pos, next_conns, nconnid, count + 1, hit_counter)
+ counter_hit = counter_hit or traverser(found_tcbs, adj_pos, next_conns, nconnid, count + 1, brk_when_found_n)
+ if brk_when_found_n and #found_tcbs>=brk_when_found_n then
+ break
+ end
end
end
return counter_hit
@@ -377,6 +380,32 @@ function ildb.dissolve_ts(ts_id)
-- Note: ts gets removed in the moment of the removal of the last TCB.
end
+-- Utilize the traverser to find the track section at the specified position
+-- Returns:
+-- ts_id - the first found ts
+-- nil - there were no TCBs in TRAVERSER_MAX range of the position, or track ends were reached
+-- false - the first found TCB stated End-Of-Interlocking
+function ildb.get_ts_at_pos(pos)
+ local node_ok, conns, rhe = advtrains.get_rail_info_at(pos, advtrains.all_tracktypes)
+ if not node_ok then
+ error("get_ts_at_pos but node is NOK: "..minetest.pos_to_string(pos))
+ end
+ local found_tcbs = {}
+ for connid, conn in ipairs(conns) do -- Note: a breadth-first-search would be better for performance
+ traverser(found_tcbs, pos, conns, connid, 0, 1)
+ if #found_tcbs >= 1 then
+ local tcbs = ildb.get_tcbs(found_tcbs[1])
+ local ts
+ if tcbs.ts_id then
+ return tcbs.ts_id
+ else
+ return false
+ end
+ end
+ end
+ return nil
+end
+
advtrains.interlocking.db = ildb
diff --git a/advtrains_interlocking/init.lua b/advtrains_interlocking/init.lua
index 54fdb68..a7138f8 100644
--- a/advtrains_interlocking/init.lua
+++ b/advtrains_interlocking/init.lua
@@ -9,3 +9,4 @@ dofile(modpath.."database.lua")
dofile(modpath.."tcb_ts_ui.lua")
dofile(modpath.."signal_api.lua")
dofile(modpath.."demosignals.lua")
+dofile(modpath.."train_related.lua")
diff --git a/advtrains_interlocking/train_related.lua b/advtrains_interlocking/train_related.lua
new file mode 100644
index 0000000..3e1c05b
--- /dev/null
+++ b/advtrains_interlocking/train_related.lua
@@ -0,0 +1,2 @@
+-- train_related.lua
+-- Occupation of track sections - mainly implementation of train callbacks