diff options
Diffstat (limited to 'advtrains/path.lua')
| -rw-r--r-- | advtrains/path.lua | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/advtrains/path.lua b/advtrains/path.lua index ee82c06..cd7d94a 100644 --- a/advtrains/path.lua +++ b/advtrains/path.lua @@ -19,6 +19,8 @@ -- When the day comes on that path!=node, these will only be set if this index represents a transition between rail nodes -- path_dist - The total distance of this path element from path element 0 -- path_dir - The direction of this path item's transition to the next path item, which is the angle of conns[path_cn[i]].c +-- path_speed- Populated by the LZB system. The maximum speed (velocity) permitted in the moment this path item is passed. +-- (this saves brake distance calculations every step to determine LZB control). nil means no limit. --Variables: -- path_ext_f/b - how far path[i] is set -- path_trk_f/b - how far the path extends along a track. beyond those values, paths are generated in a straight line. @@ -52,6 +54,8 @@ function advtrains.path_create(train, pos, connid, rel_index) [0] = advtrains.conn_angle_median(conns[mconnid].c, conns[connid].c) } + train.path_speed = { } + train.path_ext_f=0 train.path_ext_b=0 train.path_trk_f=0 @@ -123,6 +127,7 @@ function advtrains.path_invalidate(train, ignore_lock) train.path_cp = nil train.path_cn = nil train.path_dir = nil + train.path_speed = nil train.path_ext_f=0 train.path_ext_b=0 train.path_trk_f=0 @@ -131,6 +136,28 @@ function advtrains.path_invalidate(train, ignore_lock) train.path_req_b=0 train.dirty = true + --atdebug(train.id, "Path invalidated") +end + +-- Keeps the path intact, but invalidates all path nodes from the specified index (inclusive) +-- onwards. This has the advantage that we don't need to recalculate the whole path, and we can do it synchronously. +function advtrains.path_invalidate_ahead(train, start_idx) + + local idx = atfloor(start_idx) + + if(idx <= train.index) then + advtrains.path_print(train, atwarn) + error("Train "+train.id+": Cannot path_invalidate_ahead start_idx="+idx+" as train has already passed!") + end + + local i = idx + while train.path[i] do + advtrains.occ.clear_item(train.id, advtrains.round_vector_floor_y(train.path[i])) + end + train.path_ext_f=idx - 1 + train.path_trk_f=idx - 1 + + advtrains.run_callbacks_invahead(train.id, train, idx) end -- Prints a path using the passed print function @@ -141,12 +168,12 @@ function advtrains.path_print(train, printf) printf("path_print: Path is invalidated/inexistant.") return end - printf("i: CP Position Dir CN Dist") + printf("i: CP Position Dir CN Dist Speed") for i = train.path_ext_b, train.path_ext_f do if i==train.path_trk_b then printf("--Back on-track border here--") end - printf(i,": ",train.path_cp[i]," ",train.path[i]," ",train.path_dir[i]," ",train.path_cn[i]," ",train.path_dist[i],"") + printf(i,": ",train.path_cp[i]," ",train.path[i]," ",train.path_dir[i]," ",train.path_cn[i]," ",train.path_dist[i]," ",train.path_speed[i]) if i==train.path_trk_f then printf("--Front on-track border here--") end @@ -350,6 +377,7 @@ function advtrains.path_clear_unused(train) train.path_ext_b = i + 1 end + --[[ Why exactly are we clearing path from the front? This doesn't make sense! for i = train.path_ext_f,train.path_req_f + PATH_CLEAR_KEEP,-1 do advtrains.occ.clear_item(train.id, advtrains.round_vector_floor_y(train.path[i])) train.path[i] = nil @@ -358,14 +386,16 @@ function advtrains.path_clear_unused(train) train.path_cn[i] = nil train.path_dir[i+1] = nil train.path_ext_f = i - 1 - end + end ]] train.path_trk_b = math.max(train.path_trk_b, train.path_ext_b) - train.path_trk_f = math.min(train.path_trk_f, train.path_ext_f) + --train.path_trk_f = math.min(train.path_trk_f, train.path_ext_f) train.path_req_f = math.ceil(train.index) train.path_req_b = math.floor(train.end_index or train.index) end +-- Scan the path of the train for position, without querying the occupation table +-- returns index, or nil if pos is not on the path function advtrains.path_lookup(train, pos) local cp = advtrains.round_vector_floor_y(pos) for i = train.path_ext_b, train.path_ext_f do |