diff options
Diffstat (limited to 'advtrains/copytool.lua')
| -rw-r--r-- | advtrains/copytool.lua | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/advtrains/copytool.lua b/advtrains/copytool.lua new file mode 100644 index 0000000..dc18081 --- /dev/null +++ b/advtrains/copytool.lua @@ -0,0 +1,185 @@ +--clipboard = {trainlen = number, [n] = {type = string, flipped = bool, } + +-- Yaw is in radians. There are 2pi rad in a circle. North is the 0 point and the angle increases anticlockwise. +-- 4.712389 = 1.5pi; sin(1.5pi) = -1 +-- 7.853981 = 2.5pi; sin(2.5pi) = 1 + +minetest.register_tool("advtrains:copytool", { + description = attrans("Train copy/paste tool\n\nLeft-click: copy train\nRight-click: paste train"), + inventory_image = "advtrains_copytool.png", + wield_image = "advtrains_copytool.png", + stack_max = 1, + -- Paste: Take the clipboard and the player yaw, and attempt to place a new train in the world. + -- The front of the train is used as the start of the new train and it proceeds backwards from + -- the direction of travel. + on_place = function(itemstack, placer, pointed_thing) + return advtrains.pcall(function() + if ((not pointed_thing.type == "node") or (not placer.get_player_name)) then + return + end + local pname = placer:get_player_name() + + local node=minetest.get_node_or_nil(pointed_thing.under) + if not node then atprint("[advtrains]Ignore at placer position") return itemstack end + local nodename=node.name + if(not advtrains.is_track_and_drives_on(nodename, {default=true})) then + atprint("no track here, not placing.") + return itemstack + end + if not minetest.check_player_privs(placer, {train_operator = true }) then + minetest.chat_send_player(pname, "You don't have the train_operator privilege.") + return itemstack + end + if not minetest.check_player_privs(placer, {train_admin = true }) and minetest.is_protected(pointed_thing.under, placer:get_player_name()) then + return itemstack + end + local tconns=advtrains.get_track_connections(node.name, node.param2) + local yaw = placer:get_look_horizontal() + local plconnid = advtrains.yawToClosestConn(yaw, tconns) + + local prevpos = advtrains.get_adjacent_rail(pointed_thing.under, tconns, plconnid, {default=true}) + if not prevpos then + minetest.chat_send_player(pname, "The track you are trying to place the wagon on is not long enough!") + return + end + + local meta = itemstack:get_meta() + if not meta then + minetest.chat_send_player(pname, attrans("The clipboard couldn't access the metadata. Paste failed.")) + return + end + local clipboard = meta:get_string("clipboard") + if (clipboard == "") then + minetest.chat_send_player(pname, "The clipboard is empty."); + return + end + clipboard = minetest.deserialize(clipboard) + if (clipboard.wagons == nil) then + minetest.chat_send_player(pname, "The clipboard is empty."); + return + end + + local wagons = {} + local n = 1 + for _, wagonProto in pairs(clipboard.wagons) do + local wagon = advtrains.create_wagon(wagonProto.type, pname) + advtrains.wagons[wagon].wagon_flipped = wagonProto.wagon_flipped + wagons[n] = wagon + n = n + 1 + end + + local id=advtrains.create_new_train_at(pointed_thing.under, plconnid, 0, wagons) + local train = advtrains.trains[id] + train.off_track = train.end_index<train.path_trk_b + if (train.off_track) then + minetest.chat_send_player(pname, "Back of train would end up off track, cancelling.") + advtrains.remove_train(id) + return + end + train.text_outside = clipboard.text_outside + train.text_inside = clipboard.text_inside + train.routingcode = clipboard.routingcode + train.line = clipboard.line + + return + end) + end, + -- Copy: Take the pointed-at train and put it on the clipboard + on_use = function(itemstack, user, pointed_thing) + if not user:get_player_name() then return end + if (pointed_thing.type ~= "object") then return end + + local le = pointed_thing.ref:get_luaentity() + if (le == nil) then + minetest.chat_send_player(user:get_player_name(), "No such lua entity!") + return + end + + local wagon = advtrains.wagons[le.id] + if (not (le.id and advtrains.wagons[le.id])) then + minetest.chat_send_player(user:get_player_name(), string.format("No such wagon: %s", le.id)) + return + end + + local train = advtrains.trains[wagon.train_id] + if (not train) then + minetest.chat_send_player(user:get_player_name(), string.format("No such train: %s", wagon.train_id)) + return + end + + -- Record the train length. The paste operation should require this much free space. + local clipboard = { + trainlen = math.ceil(train.trainlen), + text_outside = train.text_outside, + text_inside = train.text_inside, + routingcode = train.routingcode, + line = train.line, + wagons = {} + } + local trainLength = math.ceil(train.trainlen) + + local n = 1 + for _, wagonid in pairs(train.trainparts) do + local wagon = advtrains.wagons[wagonid] + clipboard.wagons[n] = { + wagon_flipped = wagon.wagon_flipped, + type = wagon.type + } + n = n + 1 + end + + + local function flip_clipboard(wagon_clipboard) + local flipped = {} + local numWagons = #wagon_clipboard + for k, v in ipairs(wagon_clipboard) do + local otherSide = (numWagons-k)+1 + flipped[otherSide] = v + local wagon = flipped[otherSide] + wagon.wagon_flipped = not wagon.wagon_flipped + end + return flipped + end + + local function is_loco(wagon_id) + local wagon = advtrains.wagons[wagon_id] + if (not wagon) then return false end + local wagon_proto = advtrains.wagon_prototypes[wagon.type or wagon.entity_name] + if wagon_proto and wagon_proto.is_locomotive then + return true + end + return false + end + + -- Decide on a new 'front of train' and possibly flip the train. + -- Locomotive on one end = loco-hauled, that end is front; + -- if (advtrains.wagons[train.trainparts[1]].is_locomotive) then -- do nothing, train is already in right order + local numWagons = #train.trainparts + local backLoco = train.trainparts[numWagons] + backLoco = is_loco(backLoco) + local frontLoco = train.trainparts[1] + frontLoco = is_loco(frontLoco) + if ((backLoco) and (not frontLoco)) then + clipboard.wagons = flip_clipboard(clipboard.wagons) + --minetest.chat_send_player(user:get_player_name(), "Flipped train: Loco-hauled") + end + -- locomotives on both ends = train is push-pull / multi-unit, has no front, do nothing + -- no locomotives on ends = rake of wagons, front is end closest to where player copied. + if ((not frontLoco) and (not backLoco)) then + + if (wagon.pos_in_trainparts / numWagons > 0.5) then -- towards the end of the rain + clipboard.wagons = flip_clipboard(clipboard.wagons) + --minetest.chat_send_player(user:get_player_name(), "Flipped train: Rake") + end + end + + local meta = itemstack:get_meta() + if not meta then + minetest.chat_send_player(pname, attrans("The clipboard couldn't access the metadata. Copy failed.")) + return + end + meta:set_string("clipboard", minetest.serialize(clipboard)) + minetest.chat_send_player(user:get_player_name(), attrans("Train copied!")) + return itemstack + end +})
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