Once it takes off, you know that the problem is most likely the signal/junction/etc. Turn the train on and see if it it can path to the station. Hop in the train and drive it manually past the nearest signal. There are two ways to debug a train issue. If it's done properly, you should see a green square around one signal when you mouse over the other.) You could also, of course, be missing a piece of rail, have the station on the wrong side of a one-way rail, or have misplaced a signal somewhere along the way. (A 2-way signal just meaning that you place a signal on both sides of a single piece of rail. These are not available in Voxel Tycoon.I can't see enough to really know for sure, but the problem may be that you don't have any two-way signals despite having a 2-way track where your lanes merge. OpenTTD also supports path signals, so trains may reserve only the portion of the block they intend to use. Rather than block the entry while waiting for a particular platform, the train will wait at the pre-signal and choose the first platform that becomes available. This is not usually used for intersection control, but rather it is used to make trains hold short of an intersection where the train might choose among multiple paths a typical use case is for entering a station with multiple platforms. An OpenTTD pre-signal (any signal marked with a yellow bar) has no concept of the "next" signal or where the train is going at all it will be green if *any* of the *explicitly marked* exit signals are green (exit signals have a vertical white bar for a plain exit, or a vertical yellow for an exit signal that is also a pre-signal). The Voxel Tycoon pre-signal will be red if the train's next signal is also red, keeping the train out of the intersection. Voxel Tycoon signals have a "pre-signal" like OpenTTD, but it works a little differently in intersections with multiple exits. VT does not have this special case, and trains will not pass a red chain signal even if they do not need a path through an occupied block. In fact, adding a station inside a chain sequence will turn the chain signals from red to blue. However, since trains will stop at the next signal if any part of their path becomes occupied, and new trains will only enter when their path is completely free, this behavior does not cause gridlock.įactorio trains will conclude their pathfinding at a station, and will pass chain signals with no real exit if the station is within the chain sequence. This creates a sort of dependency tree, where first entered trains may have to wait for later trains to exit the intersection before continuing. Voxel Tycoon trains, on the other hand, can and will enter blocks that other trains may have already looked at when deciding whether to pass a chain signal. In addition, trains in Factorio also reserve all chain blocks they plan to traverse through in a sequence of chain blocks, up to and including the next normal block. In Voxel Tycoon, momentum takes second priority trains will stop immediately if the block they were approaching gets taken. In Factorio, trains reserve blocks ahead of them so that if their momentum carries them into another block, that block is guaranteed to be free. In particular, the way two-way tracks are designated is exactly the same. The chain and block signals in Voxel Tycoon are almost exactly the same as the chain and rail signals in Factorio. This way, the pre-signal grouping cannot be blocked forever as long as there is enough space after the exiting regular signals to fit each train.Ĭomparison with other games Factorio If this train needed to pass a pre-signal to enter the offending block, then it must be able to leave the block, thus freeing the original train. Trains can pass an initial pre-signal, only to be blocked at another pre-signal by another train. when it wants to go to a station in the middle), but there is no eventual exit after the train's path, the train will not go through. If a train does not need to pass completely through a sequence of pre-signals (i.e.
The pre-signal will be green if all possible paths are free, yellow if there is at least one blocked and at least one open, and red if all paths are blocked.
Factorio train no path free#
This is usually used for keeping intersections free and distributing trains among platforms. The bottom train will be able to pass through the intersection with the help of the pre-signal on the right track.Ī train will pass a pre-signal if every block in the train's desired path up to and including the next regular signal is free. Pre-signal keeping an intersection clear.
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