From e8c9d6eb66ac00f7c61491b9f2cf6de8971e08f8 Mon Sep 17 00:00:00 2001 From: orwell96 Date: Mon, 30 May 2016 20:30:38 +0200 Subject: added license documents --- license.txt | 142 +++++++++++++ license_media.txt | 66 ++++++ trainlogic.lua~ | 626 ------------------------------------------------------ 3 files changed, 208 insertions(+), 626 deletions(-) create mode 100644 license.txt create mode 100644 license_media.txt delete mode 100644 trainlogic.lua~ diff --git a/license.txt b/license.txt new file mode 100644 index 0000000..68a4b60 --- /dev/null +++ b/license.txt @@ -0,0 +1,142 @@ +GNU LESSER GENERAL PUBLIC LICENSE + +Version 2.1, February 1999 + +Copyright (C) 1991, 1999 Free Software Foundation, Inc. +51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +Everyone is permitted to copy and distribute verbatim copies +of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. 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If the standard suite of rights granted under applicable copyright law includes additional rights not granted under this License, such additional rights are deemed to be included in the License; this License is not intended to restrict the license of any rights under applicable law. diff --git a/trainlogic.lua~ b/trainlogic.lua~ deleted file mode 100644 index d12dfa2..0000000 --- a/trainlogic.lua~ +++ /dev/null @@ -1,626 +0,0 @@ ---trainlogic.lua ---controls train entities stuff about connecting/disconnecting/colliding trains and other things - -local print=function(t) minetest.log("action", t) minetest.chat_send_all(t) end - -advtrains.train_accel_force=5--per second and divided by number of wagons -advtrains.train_brake_force=3--per second, not divided by number of wagons -advtrains.train_emerg_force=10--for emergency brakes(when going off track) - -advtrains.audit_interval=10 - -advtrains.all_traintypes={} -function advtrains.register_train_type(name, drives_on, max_speed) - advtrains.all_traintypes[name]={} - advtrains.all_traintypes[name].drives_on=drives_on - advtrains.all_traintypes[name].max_speed=max_speed or 10 -end - - -advtrains.trains={} -advtrains.wagon_save={} - ---load initially -advtrains.fpath=minetest.get_worldpath().."/advtrains" -local file, err = io.open(advtrains.fpath, "r") -if not file then - local er=err or "Unknown Error" - print("[advtrains]Failed loading advtrains save file "..er) -else - local tbl = minetest.deserialize(file:read("*a")) - if type(tbl) == "table" then - advtrains.trains=tbl - end - file:close() -end -advtrains.fpath_ws=minetest.get_worldpath().."/advtrains_wagon_save" -local file, err = io.open(advtrains.fpath_ws, "r") -if not file then - local er=err or "Unknown Error" - print("[advtrains]Failed loading advtrains save file "..er) -else - local tbl = minetest.deserialize(file:read("*a")) - if type(tbl) == "table" then - advtrains.wagon_save=tbl - end - file:close() -end - - -advtrains.save = function() - --print("[advtrains]saving") - advtrains.invalidate_all_paths() - local datastr = minetest.serialize(advtrains.trains) - if not datastr then - minetest.log("error", "[advtrains] Failed to serialize train data!") - return - end - local file, err = io.open(advtrains.fpath, "w") - if err then - return err - end - file:write(datastr) - file:close() - - -- update wagon saves - for _,wagon in pairs(minetest.luaentities) do - if wagon.is_wagon and wagon.initialized then - advtrains.wagon_save[wagon.unique_id]=advtrains.merge_tables(wagon)--so, will only copy non_metatable elements - end - end - --cross out userdata - for w_id, data in pairs(advtrains.wagon_save) do - data.name=nil - data.object=nil - if data.driver then - data.driver_name=data.driver:get_player_name() - data.driver=nil - else - data.driver_name=nil - end - end - --print(dump(advtrains.wagon_save)) - datastr = minetest.serialize(advtrains.wagon_save) - if not datastr then - minetest.log("error", "[advtrains] Failed to serialize train data!") - return - end - file, err = io.open(advtrains.fpath_ws, "w") - if err then - return err - end - file:write(datastr) - file:close() - - advtrains.save_trackdb() -end -minetest.register_on_shutdown(advtrains.save) - -advtrains.save_and_audit_timer=advtrains.audit_interval -minetest.register_globalstep(function(dtime) - advtrains.save_and_audit_timer=advtrains.save_and_audit_timer-dtime - if advtrains.save_and_audit_timer<=0 then - --print("[advtrains] audit step") - --clean up orphaned trains - for k,v in pairs(advtrains.trains) do - --advtrains.update_trainpart_properties(k) - if #v.trainparts==0 then - advtrains.trains[k]=nil - end - end - --save - advtrains.save() - advtrains.save_and_audit_timer=advtrains.audit_interval - end - --regular train step - for k,v in pairs(advtrains.trains) do - advtrains.train_step(k, v, dtime) - end -end) - -function advtrains.train_step(id, train, dtime) - - --TODO check for all vars to be present - - --if not train.last_pos then advtrains.trains[id]=nil return end - - if not advtrains.pathpredict(id, train) then - print("pathpredict failed(returned false)") - train.velocity=0 - train.tarvelocity=0 - return - end - - local path=advtrains.get_or_create_path(id, train) - if not path then - train.velocity=0 - train.tarvelocity=0 - print("train has no path for whatever reason") - return - end - --apply off-track handling: - local front_off_track=train.max_index_on_track and train.index>train.max_index_on_track - local back_off_track=train.min_index_on_track and (train.index-train.trainlen)1 then train.tarvelocity=1 end - if train.tarvelocity<-1 then train.tarvelocity=-1 end - elseif front_off_track then--allow movement only backward - if train.tarvelocity>0 then train.tarvelocity=0 end - if train.tarvelocity<-1 then train.tarvelocity=-1 end - elseif back_off_track then--allow movement only forward - if train.tarvelocity>1 then train.tarvelocity=1 end - if train.tarvelocity<0 then train.tarvelocity=0 end - end - - --move - if not train.velocity then - train.velocity=0 - end - train.index=train.index and train.index+((train.velocity/(train.path_dist[math.floor(train.index)] or 1))*dtime) or 0 - --check for collisions by finding objects - --front - local search_radius=4 - - local posfront=path[math.floor(train.index+1)] - if posfront then - local objrefs=minetest.get_objects_inside_radius(posfront, search_radius) - for _,v in pairs(objrefs) do - local le=v:get_luaentity() - if le and le.is_wagon and le.initialized and le.train_id~=id then - advtrains.try_connect_trains(id, le.train_id) - end - end - end - local posback=path[math.floor(train.index-(train.trainlen or 0)-1)] - if posback then - local objrefs=minetest.get_objects_inside_radius(posback, search_radius) - for _,v in pairs(objrefs) do - local le=v:get_luaentity() - if le and le.is_wagon and le.initialized and le.train_id~=id then - advtrains.try_connect_trains(id, le.train_id) - end - end - end - - --check for any trainpart entities if they have been unloaded. do this only if train is near a player, to not spawn entities into unloaded areas - train.check_trainpartload=(train.check_trainpartload or 0)-dtime - local node_range=(math.max((minetest.setting_get("active_block_range") or 0),1)*16) - if train.check_trainpartload<=0 and posfront and posback then - print(minetest.pos_to_string(posfront)) - local should_check=false - for _,p in ipairs(minetest.get_connected_players()) do - should_check=should_check or ((vector.distance(posfront, p:getpos())0 then--accelerating, force will be brought on only by locomotives. - --print("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. - --print("braking with emergency force") - applydiff=(math.min((advtrains.train_emerg_force*dtime), math.abs(diff))) - else - --print("braking with default force") - applydiff=(math.min((advtrains.train_brake_force*dtime), math.abs(diff))) - end - end - train.velocity=train.velocity+(applydiff*math.sign(train.tarvelocity-train.velocity)) - end - -end - ---the 'leader' concept has been overthrown, we won't rely on MT's "buggy object management" ---structure of train table: ---[[ -trains={ - [train_id]={ - trainparts={ - [n]=wagon_id - } - path={path} - velocity - tarvelocity - index - trainlen - path_inv_level - last_pos | - last_dir | for pathpredicting. - no_connect_for_movements (index way counter for when not to connect again) TODO implement - } -} ---a wagon itself has the following properties: -wagon={ - unique_id - train_id - pos_in_train (is index difference, including train_span stuff) - pos_in_trainparts (is index in trainparts tabel of trains) -} -inherited by metatable: -wagon_proto={ - wagon_span -} -]] - ---returns new id -function advtrains.create_new_train_at(pos, pos_prev, traintype) - local newtrain_id=os.time()..os.clock() - while advtrains.trains[newtrain_id] do newtrain_id=os.time()..os.clock() end--ensure uniqueness(will be unneccessary) - - advtrains.trains[newtrain_id]={} - advtrains.trains[newtrain_id].last_pos=pos - advtrains.trains[newtrain_id].last_pos_prev=pos_prev - advtrains.trains[newtrain_id].traintype=traintype - advtrains.trains[newtrain_id].tarvelocity=0 - advtrains.trains[newtrain_id].velocity=0 - advtrains.trains[newtrain_id].trainparts={} - return newtrain_id -end - ---returns false on failure. handle this case! -function advtrains.pathpredict(id, train) - - --print("pos ",x,y,z) - --::rerun:: - if not train.index then train.index=0 end - if not train.path or #train.path<2 then - if not train.last_pos then - --no chance to recover - print("[advtrains]train hasn't saved last-pos, removing train.") - advtrains.train[id]=nil - return false - end - - local node_ok=advtrains.get_rail_info_at(advtrains.round_vector_floor_y(train.last_pos), train.traintype) - - if node_ok==nil then - --block not loaded, do nothing - return nil - elseif node_ok==false then - print("[advtrains]no track here, (fail) removing train.") - advtrains.trains[id]=nil - return false - end - - if not train.last_pos_prev then - --no chance to recover - print("[advtrains]train hasn't saved last-pos_prev, removing train.") - advtrains.trains[id]=nil - return false - end - - local prevnode_ok=advtrains.get_rail_info_at(advtrains.round_vector_floor_y(train.last_pos_prev), train.traintype) - - if prevnode_ok==nil then - --block not loaded, do nothing - return nil - elseif prevnode_ok==false then - print("[advtrains]no track at prev, (fail) removing train.") - advtrains.trains[id]=nil - return false - end - - train.index=(train.restore_add_index or 0)+(train.savedpos_off_track_index_offset or 0) - --restore_add_index is set by save() to prevent trains hopping to next round index. should be between -0.5 and 0.5 - --savedpos_off_track_index_offset is set if train went off track. see below. - train.path={} - train.path_dist={} - train.path[0]=train.last_pos - train.path[-1]=train.last_pos_prev - train.path_dist[-1]=vector.distance(train.last_pos, train.last_pos_prev) - end - - local maxn=advtrains.maxN(train.path) - while (maxn-train.index) < 2 do--pregenerate - --print("[advtrains]maxn conway for ",maxn,minetest.pos_to_string(path[maxn]),maxn-1,minetest.pos_to_string(path[maxn-1])) - local conway=advtrains.conway(train.path[maxn], train.path[maxn-1], train.traintype) - if conway then - train.path[maxn+1]=conway - train.max_index_on_track=maxn - else - --do as if nothing has happened and preceed with path - --but do not update max_index_on_track - print("over-generating path max to index "..maxn+1) - train.path[maxn+1]=vector.add(train.path[maxn], vector.subtract(train.path[maxn], train.path[maxn-1])) - end - train.path_dist[maxn]=vector.distance(train.path[maxn+1], train.path[maxn]) - maxn=advtrains.maxN(train.path) - end - - local minn=advtrains.minN(train.path) - while (train.index-minn) < (train.trainlen or 0) + 2 do --post_generate. has to be at least trainlen. - --print("[advtrains]minn conway for ",minn,minetest.pos_to_string(path[minn]),minn+1,minetest.pos_to_string(path[minn+1])) - local conway=advtrains.conway(train.path[minn], train.path[minn+1], train.traintype) - if conway then - train.path[minn-1]=conway - train.min_index_on_track=minn - else - --do as if nothing has happened and preceed with path - --but do not update min_index_on_track - print("over-generating path min to index "..minn-1) - train.path[minn-1]=vector.add(train.path[minn], vector.subtract(train.path[minn], train.path[minn+1])) - end - train.path_dist[minn-1]=vector.distance(train.path[minn], train.path[minn-1]) - minn=advtrains.minN(train.path) - end - if not train.min_index_on_track then train.min_index_on_track=0 end - if not train.max_index_on_track then train.max_index_on_track=0 end - - --make pos/yaw available for possible recover calls - if train.max_index_on_tracktrain.index then --whoops, train went even more far. same behavior - train.savedpos_off_track_index_offset=train.index-train.min_index_on_track - train.last_pos=train.path[train.min_index_on_track+1] - train.last_pos_prev=train.path[train.min_index_on_track] - --print("train is off-track (back), last positions kept at "..minetest.pos_to_string(train.last_pos).." / "..minetest.pos_to_string(train.last_pos_prev)) - else --regular case - train.savedpos_off_track_index_offset=nil - train.last_pos=train.path[math.floor(train.index+0.5)] - train.last_pos_prev=train.path[math.floor(train.index-0.5)] - end - return train.path -end - -function advtrains.get_or_create_path(id, train) - if not train.path then return advtrains.pathpredict(id, train) end - - return train.path -end - -function advtrains.add_wagon_to_train(wagon, train_id, index) - local train=advtrains.trains[train_id] - if index then - table.insert(train.trainparts, index, wagon.unique_id) - else - table.insert(train.trainparts, wagon.unique_id) - end - --this is not the usual case!!! - --we may set initialized because the wagon has no chance to step() - wagon.initialized=true - advtrains.update_trainpart_properties(train_id) -end -function advtrains.update_trainpart_properties(train_id, invert_flipstate) - local train=advtrains.trains[train_id] - local rel_pos=0 - local count_l=0 - for i, w_id in ipairs(train.trainparts) do - local any_loaded=false - for _,wagon in pairs(minetest.luaentities) do - if wagon.is_wagon and wagon.initialized and wagon.unique_id==w_id then - rel_pos=rel_pos+wagon.wagon_span - wagon.train_id=train_id - wagon.pos_in_train=rel_pos - wagon.pos_in_trainparts=i - wagon.old_velocity_vector=nil - if wagon.is_locomotive then - count_l=count_l+1 - end - if invert_flipstate then - wagon.wagon_flipped = not wagon.wagon_flipped - end - rel_pos=rel_pos+wagon.wagon_span - any_loaded=true - end - end - if not any_loaded then - print("update_trainpart_properties wagon "..w_id.." not loaded, ignoring it.") - end - end - train.trainlen=rel_pos - train.locomotives_in_train=count_l -end - -function advtrains.split_train_at_wagon(wagon) - --get train - local train=advtrains.trains[wagon.train_id] - local pos_for_new_train=advtrains.get_or_create_path(wagon.train_id, train)[math.floor((train.index or 0)-wagon.pos_in_train-0.5)] - local pos_for_new_train_prev=advtrains.get_or_create_path(wagon.train_id, train)[math.floor((train.index or 0)-wagon.pos_in_train-1.5)] - - --before doing anything, check if both are rails. else do not allow - if not pos_for_new_train then - print("split_train: pos_for_new_train not set") - return false - end - local node_ok=advtrains.get_rail_info_at(advtrains.round_vector_floor_y(pos_for_new_train), train.traintype) - if not node_ok then - print("split_train: pos_for_new_train "..minetest.pos_to_string(advtrains.round_vector_floor_y(pos_for_new_train_prev)).." not loaded or is not a rail") - return false - end - - if not train.last_pos_prev then - print("split_train: pos_for_new_train_prev not set") - return false - end - - local prevnode_ok=advtrains.get_rail_info_at(advtrains.round_vector_floor_y(pos_for_new_train), train.traintype) - if not prevnode_ok then - print("split_train: pos_for_new_train_prev "..minetest.pos_to_string(advtrains.round_vector_floor_y(pos_for_new_train_prev)).." not loaded or is not a rail") - return false - end - - --create subtrain - local newtrain_id=advtrains.create_new_train_at(pos_for_new_train, pos_for_new_train_prev, train.traintype) - local newtrain=advtrains.trains[newtrain_id] - --insert all wagons to new train - for k,v in ipairs(train.trainparts) do - if k>=wagon.pos_in_trainparts then - table.insert(newtrain.trainparts, v) - train.trainparts[k]=nil - end - end - --update train parts - advtrains.update_trainpart_properties(wagon.train_id)--atm it still is the desierd id. - advtrains.update_trainpart_properties(newtrain_id) - train.tarvelocity=0 - newtrain.velocity=train.velocity - newtrain.tarvelocity=0 -end - ---there are 4 cases: ---1/2. F<->R F<->R regular, put second train behind first ---->frontpos of first train will match backpos of second ---3. F<->R R<->F flip one of these trains, take the other as new train ---->backpos's will match ---4. R<->F F<->R flip one of these trains and take it as new parent ---->frontpos's will match -function advtrains.try_connect_trains(id1, id2) - local train1=advtrains.trains[id1] - local train2=advtrains.trains[id2] - if not train1 or not train2 then return end - if not train1.path or not train2.path then return end - if train1.traintype~=train2.traintype then - --TODO implement collision without connection - return - end - if #train1.trainparts==0 or #train2.trainparts==0 then return end - - local frontpos1=train1.path[math.floor(train1.index+0.5)] - local backpos1=train1.path[math.floor(train1.index-(train1.trainlen or 2)+0.5)] - local frontpos2=train2.path[math.floor(train2.index+0.5)] - local backpos2=train2.path[math.floor(train2.index-(train1.trainlen or 2)+0.5)] - - if not frontpos1 or not frontpos2 or not backpos1 or not backpos2 then return end - - --case 1 (first train is front) - if vector.equals(frontpos2, backpos1) then - advtrains.do_connect_trains(id1, id2) - --case 2 (second train is front) - elseif vector.equals(frontpos1, backpos2) then - advtrains.do_connect_trains(id2, id1) - --case 3 - elseif vector.equals(backpos2, backpos1) then - advtrains.invert_train(id2) - advtrains.do_connect_trains(id1, id2) - --case 4 - elseif vector.equals(frontpos2, frontpos1) then - advtrains.invert_train(id1) - advtrains.do_connect_trains(id1, id2) - end -end -function advtrains.do_connect_trains(first_id, second_id) - local first_wagoncnt=#advtrains.trains[first_id].trainparts - local second_wagoncnt=#advtrains.trains[second_id].trainparts - - for _,v in ipairs(advtrains.trains[second_id].trainparts) do - table.insert(advtrains.trains[first_id].trainparts, v) - end - --kick it like physics (with mass being #wagons) - local new_velocity=((advtrains.trains[first_id].velocity*first_wagoncnt)+(advtrains.trains[second_id].velocity*second_wagoncnt))/(first_wagoncnt+second_wagoncnt) - advtrains.trains[second_id]=nil - advtrains.update_trainpart_properties(first_id) - advtrains.trains[first_id].velocity=new_velocity - advtrains.trains[first_id].tarvelocity=0 -end - -function advtrains.invert_train(train_id) - local train=advtrains.trains[train_id] - - local old_path=advtrains.get_or_create_path(train_id, train) - train.path={} - train.index=-train.index+train.trainlen - train.velocity=-train.velocity - train.tarvelocity=-train.tarvelocity - for k,v in pairs(old_path) do - train.path[-k]=v - end - local old_trainparts=train.trainparts - train.trainparts={} - for k,v in ipairs(old_trainparts) do - table.insert(train.trainparts, 1, v)--notice insertion at first place - end - advtrains.update_trainpart_properties(train_id, true) -end - -function advtrains.is_train_at_pos(pos) - --print("istrainat: pos "..minetest.pos_to_string(pos)) - local checked_trains={} - local objrefs=minetest.get_objects_inside_radius(pos, 2) - for _,v in pairs(objrefs) do - local le=v:get_luaentity() - if le and le.is_wagon and le.initialized and le.train_id and not checked_trains[le.train_id] then - --print("istrainat: checking "..le.train_id) - checked_trains[le.train_id]=true - local path=advtrains.get_or_create_path(le.train_id, le:train()) - if path then - --print("has path") - for i=math.floor(le:train().index-le:train().trainlen+0.5),math.floor(le:train().index+0.5) do - if path[i] then - --print("has pathitem "..i.." "..minetest.pos_to_string(path[i])) - if vector.equals(advtrains.round_vector_floor_y(path[i]), pos) then - return true - end - end - end - end - end - end - return false -end -function advtrains.invalidate_all_paths() - --print("invalidating all paths") - for k,v in pairs(advtrains.trains) do - if v.index then - v.restore_add_index=v.index-math.floor(v.index+0.5) - end - v.path=nil - v.index=nil - v.min_index_on_track=nil - v.max_index_on_track=nil - end -end \ No newline at end of file -- cgit v1.2.3