aboutsummaryrefslogtreecommitdiff
path: root/advtrains
diff options
context:
space:
mode:
Diffstat (limited to 'advtrains')
-rw-r--r--advtrains/lzb.lua9
-rw-r--r--advtrains/occupation.lua43
-rw-r--r--advtrains/trainlogic.lua92
-rw-r--r--advtrains/wagons.lua15
4 files changed, 40 insertions, 119 deletions
diff --git a/advtrains/lzb.lua b/advtrains/lzb.lua
index afbf68e..6cbf4ab 100644
--- a/advtrains/lzb.lua
+++ b/advtrains/lzb.lua
@@ -85,9 +85,9 @@ end
--[[
Distance needed to accelerate from v0 to v1 with constant acceleration a:
- v1 - v0 a / v1 - v0 \ 2
-s = v0 * ------- + - * | ------- |
- a 2 \ a /
+ v1 - v0 a / v1 - v0 \ 2 v1^2 - v0^2
+s = v0 * ------- + - * | ------- | = -----------
+ a 2 \ a / 2*a
]]
local function apply_control(id, train)
@@ -112,8 +112,7 @@ local function apply_control(id, train)
local v0 = train.velocity
local v1 = it.spd
if v1 and v1 <= v0 then
- local f = (v1-v0) / a
- local s = v0*f + a*f*f/2
+ local s = (v1*v1 - v0*v0) / (2*a)
local st = s + params.ADD_SLOW
if v0 > 3 then
diff --git a/advtrains/occupation.lua b/advtrains/occupation.lua
index f5c7d88..da60278 100644
--- a/advtrains/occupation.lua
+++ b/advtrains/occupation.lua
@@ -1,48 +1,7 @@
-- occupation.lua
--[[
Collects and manages positions where trains occupy and/or reserve/require space
-THIS SECTION ABOVE IS OUTDATED, look below
-
-Zone diagram of a train:
- |___| |___| --> Direction of travel
- oo oo+oo oo
-=|=======|===|===========|===|=======|===================|========|===
- |SafetyB|CpB| Train |CpF|SafetyF| Brake |Aware |
-[1] [2] [3] [4] [5] [6] [7] [8]
-
-ID|Name |Desc
- 0 Free Zone that was occupied before, which has now been left
- 1 Train Zone where the train actually is.
- 2 SafetyB Safety zone behind the train. extends 4m
- 3 SafetyF Safety zone in front of the train. extends 4m
- If a train is about to enter this zone, immediately brake it down to 2
- 4 CpB Backside coupling zone. If the coupling zones of 2 trains overlap, they can be coupled
- 5 CpF Frontside coupling zone
- 6 Brake Brake distance of the train. Extends to the point ~5 nodes in front
- of the point where the train would stop if it would regularily brake now.
- 7 Aware Awareness zone. Extends 10-20 nodes beyond the Brake zone
- Whenever any of the non-aware zones of other trains are detected here, the train will start to brake.
-
-Table format:
-occ[y][x][z] = {
- [1] = train 1 id
- [2] = train 1 ZoneID
-// [3] = entry seqnum*
- ...
- [2n-1] = train n id
- [2n ] = train n ZoneID
-// [3n-2] = train n id
-// [3n-1] = train n ZoneID
-// [3n ] = entry seqnum*
-}
-occ_chg[n] = {
- pos = vector,
- train_id,
- old_val, (0 when entry did not exist before)
- new_val, (0 when entry was deleted)
-}
-
----------------------
+
It turned out that, especially for the TSS, some more, even overlapping zones are required.
Packing those into a data structure would just become a huge mess!
Instead, this occupation system will store the path indices of positions in the corresponding.
diff --git a/advtrains/trainlogic.lua b/advtrains/trainlogic.lua
index 86f60c1..580a7d4 100644
--- a/advtrains/trainlogic.lua
+++ b/advtrains/trainlogic.lua
@@ -703,40 +703,6 @@ advtrains.te_register_on_remove(function(id, train)
--atdebug(id,"tnc remove",train.index,train.end_index)
end)
--- Calculates the indices where the window borders of the occupation windows are.
--- TODO adapt this code to new system, probably into a callback (probably only the brake distance code is needed)
-local function calc_occwindows(id, train)
- local end_index = advtrains.path_get_index_by_offset(train, train.index, -train.trainlen)
- train.end_index = end_index
- local cpl_b = end_index - COUPLE_ZONE
- local safety_b = advtrains.path_get_index_by_offset(train, cpl_b, -SAFETY_ZONE)
- local cpl_f = end_index + COUPLE_ZONE
- local safety_f = advtrains.path_get_index_by_offset(train, cpl_f, SAFETY_ZONE)
-
- -- calculate brake distance
- local acc_all = t_accel_all[1]
- local acc_eng = t_accel_eng[1]
- local nwagons = #train.trainparts
- local acc = acc_all + (acc_eng*train.locomotives_in_train)/nwagons
- local vel = train.velocity
- local brakedst = (vel*vel) / (2*acc)
-
- local brake_i = math.max(advtrains.path_get_index_by_offset(train, train.index, brakedst + BRAKE_SPACE), safety_f)
- local aware_i = advtrains.path_get_index_by_offset(train, brake_i, AWARE_ZONE)
-
- return {
- safety_b,
- cpl_b,
- end_index,
- train.index,
- cpl_f,
- safety_f,
- brake_i,
- aware_i,
- }
-end
-
-
--returns new id
function advtrains.create_new_train_at(pos, connid, ioff, trainparts)
local new_id=advtrains.random_id()
@@ -985,21 +951,23 @@ function advtrains.train_check_couples(train)
if not train.cpl_front then
-- recheck front couple
local front_trains, pos = advtrains.occ.get_occupations(train, atround(train.index) + CPL_CHK_DST)
- for tid, idx in pairs(front_trains) do
- local other_train = advtrains.trains[tid]
- if not advtrains.train_ensure_init(tid, other_train) then
- atwarn("Train",tid,"is not initialized! Couldn't check couples!")
- return
- end
- --atdebug(train.id,"front: ",idx,"on",tid,atround(other_train.index),atround(other_train.end_index))
- if other_train.velocity == 0 then
- if idx>=other_train.index and idx<=other_train.index + CPL_ZONE then
- createcouple(pos, train, true, other_train, true)
- break
+ if minetest.get_node_or_nil(pos) then -- if the position is loaded...
+ for tid, idx in pairs(front_trains) do
+ local other_train = advtrains.trains[tid]
+ if not advtrains.train_ensure_init(tid, other_train) then
+ atwarn("Train",tid,"is not initialized! Couldn't check couples!")
+ return
end
- if idx<=other_train.end_index and idx>=other_train.end_index - CPL_ZONE then
- createcouple(pos, train, true, other_train, false)
- break
+ --atdebug(train.id,"front: ",idx,"on",tid,atround(other_train.index),atround(other_train.end_index))
+ if other_train.velocity == 0 then
+ if idx>=other_train.index and idx<=other_train.index + CPL_ZONE then
+ createcouple(pos, train, true, other_train, true)
+ break
+ end
+ if idx<=other_train.end_index and idx>=other_train.end_index - CPL_ZONE then
+ createcouple(pos, train, true, other_train, false)
+ break
+ end
end
end
end
@@ -1013,20 +981,22 @@ function advtrains.train_check_couples(train)
if not train.cpl_back then
-- recheck back couple
local back_trains, pos = advtrains.occ.get_occupations(train, atround(train.end_index) - CPL_CHK_DST)
- for tid, idx in pairs(back_trains) do
- local other_train = advtrains.trains[tid]
- if not advtrains.train_ensure_init(tid, other_train) then
- atwarn("Train",tid,"is not initialized! Couldn't check couples!")
- return
- end
- if other_train.velocity == 0 then
- if idx>=other_train.index and idx<=other_train.index + CPL_ZONE then
- createcouple(pos, train, false, other_train, true)
- break
+ if minetest.get_node_or_nil(pos) then -- if the position is loaded...
+ for tid, idx in pairs(back_trains) do
+ local other_train = advtrains.trains[tid]
+ if not advtrains.train_ensure_init(tid, other_train) then
+ atwarn("Train",tid,"is not initialized! Couldn't check couples!")
+ return
end
- if idx<=other_train.end_index and idx>=other_train.end_index - CPL_ZONE then
- createcouple(pos, train, false, other_train, false)
- break
+ if other_train.velocity == 0 then
+ if idx>=other_train.index and idx<=other_train.index + CPL_ZONE then
+ createcouple(pos, train, false, other_train, true)
+ break
+ end
+ if idx<=other_train.end_index and idx>=other_train.end_index - CPL_ZONE then
+ createcouple(pos, train, false, other_train, false)
+ break
+ end
end
end
end
diff --git a/advtrains/wagons.lua b/advtrains/wagons.lua
index 924762c..4dbe85c 100644
--- a/advtrains/wagons.lua
+++ b/advtrains/wagons.lua
@@ -432,17 +432,10 @@ function wagon:on_step(dtime)
end
end
if collides then
- if self.collision_count and self.collision_count>10 then
- --enable collision mercy to get trains stuck in walls out of walls
- --actually do nothing except limiting the velocity to 1
- train.velocity=math.min(train.velocity, 1)
- else
- train.recently_collided_with_env=true
- train.velocity=0
- self.collision_count=(self.collision_count or 0)+1
- end
- else
- self.collision_count=nil
+ -- screw collision mercy
+ train.recently_collided_with_env=true
+ train.velocity=0
+ advtrains.atc.train_reset_command(train)
end
end
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 03:56:05 +0000