Rewrite rail connection system...

...to support an arbitrary number of connections for rails, which leads to these new features:
- switches now get recognized by the trackworker correctly
- ability to add real rail crosses
During this, I also rewrote the rail registering system and the conway function (important part of path prediction)
Note, developers: the track preset format changed, you might need to rewrite them according to the presets in tracks.lua if you wrote your own
(possibly breaks advcarts)

1 files changed, 8 insertions, 2 deletions

diff --git a/advtrains_train_subway/init.lua b/advtrains_train_subway/init.lua
index 9dd6f28..310ccf8 100644
--- a/advtrains_train_subway/init.lua
+++ b/advtrains_train_subway/init.lua
@@ -128,8 +128,14 @@ minetest.register_craftitem(":advtrains:subway_train", {
 					minetest.record_protection_violation(pointed_thing.under, placer:get_player_name())
 					return
 				end
-				local conn1=advtrains.get_track_connections(node.name, node.param2)
-				local id=advtrains.create_new_train_at(pointed_thing.under, advtrains.dirCoordSet(pointed_thing.under, conn1))
+				
+				local tconns=advtrains.get_track_connections(node.name, node.param2)
+				local yaw = placer:get_look_horizontal() + (math.pi/2)
+				local plconnid = advtrains.yawToClosestConn(yaw, tconns)
+				
+				local prevpos = advtrains.get_adjacent_rail(pointed_thing.under, tconns, plconnid, prototype.drives_on)
+				if not prevpos then return end
+				local id=advtrains.create_new_train_at(pointed_thing.under, prevpos)
 				
 				for i=1,3 do
 					local ob=minetest.add_entity(pointed_thing.under, "advtrains:subway_wagon")