diff options
Diffstat (limited to 'advtrains/trainlogic.lua')
| -rw-r--r-- | advtrains/trainlogic.lua | 157 |
1 files changed, 88 insertions, 69 deletions
diff --git a/advtrains/trainlogic.lua b/advtrains/trainlogic.lua index 4a0b26c..5681817 100644 --- a/advtrains/trainlogic.lua +++ b/advtrains/trainlogic.lua @@ -31,11 +31,20 @@ function endstep() end end -advtrains.train_accel_force=2--per second and divided by number of wagons -advtrains.train_brake_force=3--per second, not divided by number of wagons -advtrains.train_roll_force=0.5--per second, not divided by number of wagons, acceleration when rolling without brake -advtrains.train_emerg_force=10--for emergency brakes(when going off track) - +--acceleration for lever modes (trainhud.lua), per wagon +local t_accel_all={ + [0] = -10, + [1] = -3, + [2] = -0.5, + [4] = 0, +} +--acceleration per engine +local t_accel_eng={ + [0] = 0, + [1] = 0, + [2] = 0, + [4] = 2, +} advtrains.mainloop_trainlogic=function(dtime) --build a table of all players indexed by pts. used by damage and door system. @@ -226,15 +235,16 @@ function advtrains.train_step_a(id, train, dtime) --- 3. handle velocity influences --- local train_moves=(train.velocity~=0) + local tarvel_cap if train.recently_collided_with_env then - train.tarvelocity=0 + tarvel_cap=0 if not train_moves then train.recently_collided_with_env=nil--reset status when stopped end end if train.locomotives_in_train==0 then - train.tarvelocity=0 + tarvel_cap=0 end --- 3a. this can be useful for debugs/warnings and is used for check_trainpartload --- @@ -250,86 +260,95 @@ function advtrains.train_step_a(id, train, dtime) local pprint if front_off_track and back_off_track then--allow movement in both directions - if train.tarvelocity>1 then - train.tarvelocity=1 - atprint("Train",t_info,"is off track at both ends. Clipping velocity to 1") - pprint=true - end + tarvel_cap=1 elseif front_off_track then--allow movement only backward - if train.movedir==1 and train.tarvelocity>0 then - train.tarvelocity=0 - atprint("Train",t_info,"is off track. Trying to drive further out. Velocity clipped to 0") - pprint=true + if train.movedir==1 then + tarvel_cap=0 end - if train.movedir==-1 and train.tarvelocity>1 then - train.tarvelocity=1 - atprint("Train",t_info,"is off track. Velocity clipped to 1") - pprint=true + if train.movedir==-1 then + tarvel_cap=1 end elseif back_off_track then--allow movement only forward - if train.movedir==-1 and train.tarvelocity>0 then - train.tarvelocity=0 - atprint("Train",t_info,"is off track. Trying to drive further out. Velocity clipped to 0") - pprint=true + if train.movedir==1 then + tarvel_cap=1 end - if train.movedir==1 and train.tarvelocity>1 then - train.tarvelocity=1 - atprint("Train",t_info,"is off track. Velocity clipped to 1") - pprint=true + if train.movedir==-1 then + tarvel_cap=0 end end - if pprint then - atprint("max_iot", train.max_index_on_track, "min_iot", train.min_index_on_track, "<> index", train.index, "end_index", train.end_index) - end - --interpret ATC command - if train.atc_brake_target and train.atc_brake_target>=train.velocity then - train.atc_brake_target=nil - end - if train.atc_wait_finish then - if not train.atc_brake_target and train.velocity==train.tarvelocity then - train.atc_wait_finish=nil + --interpret ATC command and apply auto-lever control when not actively controlled + local trainvelocity = train.velocity + if not train.lever then train.lever=3 end + if train.active_control then + advtrains.atc.train_reset_command(id) + else + if train.atc_brake_target and train.atc_brake_target>=trainvelocity then + train.atc_brake_target=nil end - end - if train.atc_command then - if train.atc_delay<=0 and not train.atc_wait_finish then - advtrains.atc.execute_atc_command(id, train) - else - train.atc_delay=train.atc_delay-dtime + if train.atc_wait_finish then + if not train.atc_brake_target and train.velocity==train.tarvelocity then + train.atc_wait_finish=nil + end + end + if train.atc_command then + if train.atc_delay<=0 and not train.atc_wait_finish then + advtrains.atc.execute_atc_command(id, train) + else + train.atc_delay=train.atc_delay-dtime + end + end + + train.lever = 3 + if train.tarvelocity>trainvelocity then train.lever=4 end + if train.tarvelocity<trainvelocity then + if (train.atc_brake_target and train.atc_brake_target<trainvelocity) then + train.lever=1 + else + train.lever=2 + end end end - --make brake adjust the tarvelocity if necessary - if train.brake and (math.ceil(train.velocity)-1)<train.tarvelocity then - train.tarvelocity=math.max((math.ceil(train.velocity)-1), 0) + if tarvel_cap and tarvel_cap<train.tarvelocity then + train.tarvelocity=tarvel_cap + end + local tmp_lever = train.lever + if tarvel_cap and trainvelocity>tarvel_cap then + tmp_lever = 0 end --- 3a. actually calculate new velocity --- - if train.velocity~=train.tarvelocity then - local applydiff=0 - local mass=#train.trainparts - local diff=train.tarvelocity-train.velocity - if diff>0 then--accelerating, force will be brought on only by locomotives. - --atprint("accelerating with default force") - applydiff=(math.min((advtrains.train_accel_force*train.locomotives_in_train*dtime)/mass, math.abs(diff))) - else--decelerating - if front_off_track or back_off_track or train.recently_collided_with_env then --every wagon has a brake, so not divided by mass. - --atprint("braking with emergency force") - applydiff= -(math.min((advtrains.train_emerg_force*dtime), math.abs(diff))) - elseif train.brake or (train.atc_brake_target and train.atc_brake_target<train.velocity) then - --atprint("braking with default force") - --no math.min, because it can grow beyond tarvelocity, see up there - --dont worry, it will never fall below zero. - applydiff= -((advtrains.train_brake_force*dtime)) - else - --atprint("roll") - applydiff= -(math.min((advtrains.train_roll_force*dtime), math.abs(diff))) + if tmp_lever~=3 then + local acc_all = t_accel_all[tmp_lever] + local acc_eng = t_accel_eng[tmp_lever] + local nwagons = #train.trainparts + local accel = acc_all + (acc_eng*train.locomotives_in_train)/nwagons + local vdiff = accel*dtime + if not train.active_control then + local tvdiff = train.tarvelocity - trainvelocity + if math.abs(vdiff) > math.abs(tvdiff) then + --applying this change would cross tarvelocity + vdiff=tvdiff end end - train.last_accel=(applydiff*train.movedir) - train.velocity=math.min(math.max( train.velocity+applydiff , 0), train.max_speed or 10) + if tarvel_cap and trainvelocity<=tarvel_cap and trainvelocity+vdiff>tarvel_cap then + vdiff = tarvel_cap - train.velocity + end + if trainvelocity+vdiff < 0 then + vdiff = - trainvelocity + end + local mspeed = (train.max_speed or 10) + if trainvelocity+vdiff > mspeed then + vdiff = mspeed - trainvelocity + end + train.last_accel=(vdiff*train.movedir) + train.velocity=train.velocity+vdiff + if train.active_control then + train.tarvelocity = train.velocity + end else - train.last_accel=0 + train.last_accel = 0 end --- 4. move train --- |