fixed a crash relating to space elevators

cybersyn/locale/en/base.cfg

@@ -41,7 +41,7 @@ cybersyn-request-threshold=Request threshold
 cybersyn-locked-slots=Locked slots per cargo wagon
 
 [cybersyn-messages]
-missing-trains=No trains available to make a delivery from __2__ to __1__
+missing-trains=Could not find a train to make a delivery from __2__ to __1__
 lost-train=A train from depot __1__ has become lost
 nonempty-train=A train is being held in the depot because it still has cargo
 unexpected-train=A train has unexpectedly returned to the depot before completing its delivery

cybersyn/scripts/main.lua

@@ -998,6 +998,14 @@ local function main()
 				local train = map_data.trains[old_id]
 				if not train then return end
 
+				if train.is_available then
+					local network = map_data.available_trains[train.network_name--[[@as string]]]
+					if network then
+						network[new_id] = true
+						network[old_id] = nil
+					end
+				end
+
 				map_data.trains[new_id] = train
 				map_data.trains[old_id] = nil
 				train.entity = train_entity

cybersyn/scripts/migrations.lua

@@ -142,6 +142,27 @@ local migrations_table = {
 			end
 		end
 	end,
+	["1.0.7"] = function()
+		---@type MapData
+		local map_data = global
+		map_data.tick_state = STATE_INIT
+		map_data.tick_data = {}
+		if IS_SE_PRESENT then
+			for k, v in pairs(map_data.available_trains) do
+				for id, _ in pairs(v) do
+					local train = map_data.trains[id]
+					if not train then
+						v[id] = nil
+					end
+				end
+			end
+			for id, v in pairs(map_data.trains) do
+				if v.is_available then
+					map_data.available_trains[v.network_name--[[@as string]]][id] = true
+				end
+			end
+		end
+	end,
 }
 
 ---@param data ConfigurationChangedData