A version of this feature rebased onto [Cirdan's new map features branch](http://repo.or.cz/w/openttd/fttd.git) is in the *tracerestrict-cirdan* branch, see [this thread](http://www.tt-forums.net/viewtopic.php?f=33&t=58420)
This is modified to use an extra button in the smallmap window, instead of a console command, and use the current zoom level and display mode of the smallmap window.
* Automated timetables and separation: [imported](http://www.tt-forums.net/viewtopic.php?f=33&t=46391)
* Auto timetabling: Bias timetable adjustment to favour negative adjustments; this is to avoid positive feedback between congestion delays and increased timetable length. Reduce jam detection threshold.
* Auto separation: Fix handling of non-station orders (e.g. waypoints and depots). Change to a per-vehicle setting. Add a company setting to scale vehicle lateness adjustments. No longer set vehicle lateness to 0 if separation fails, instead leave it as it was.
* Timetable GUI: Allow clearing of timetable time fields which are at 0. Allow explicitly setting timetable time fields to 0 without clearing them.
* Add company settings to enable automatic timetabling or separation for new vehicles.
* Allow changing/clearing the timetabled waiting time and max speed of all of a vehicle's orders at once.
* Add client setting to show the remainder ticks in timetable, after dividing to days or minutes.
* Add a company setting to control the number of ticks used in auto-fill timetable rounding.
* Show a company-coloured mark next to vehicles in vehicle list windows, if their owner does not match list owner (imported: by McZapkie) (added in v0.8.0)
* Cargo type orders, this allows order load/unload types to be set per cargo type [imported](https://www.tt-forums.net/viewtopic.php?p=1047749) (added in v0.15.0)
This has been modified so that cargo dest can follow orders with different load/unload types.
* Random town road reconstruction [imported](https://www.tt-forums.net/viewtopic.php?f=33&t=36438) (added in v0.15.0)
This has been modified to change the setting scale. This defaults to off.
* When building tunnels, open new viewports at the far end of the tunnel [imported](https://www.tt-forums.net/viewtopic.php?f=33&t=72639) (added in v0.15.0)
* Various changes to improve handling of savegames which use features not in trunk.
* Savegames from this patchpack are not loadable in trunk.
* Savegames from trunk up to the last savegame version which has been merged into this branch (*jgrpp*) should be loadable in this patchpack.
* Savegames from other branches which use the save/load code in the *save_ext* branch (usually suffixed: *-sx*) which are also merged into this branch (*jgrpp*), or where the added feature is marked as discardable/ignorable, should be loadable in this patchpack.
* Savegames from other patched versions are not loadable in this patchpack except for savegames from the *tracerestrict* branch ([routing restrictions patch](http://www.tt-forums.net/viewtopic.php?f=33&t=73397)),
* Increase maximum permitted vehicle name length (added in v0.17.0), vehicle group name length (added in v0.17.2), and depot/station name lengths (added in v0.20.0).
* Increase number of available rail track types from 16 to 32 [imported](http://www.tt-forums.net/viewtopic.php?f=33&t=74365) (added in v0.13.0), this is increased to 64 rail track types in trunk as of commit bf8d7df7, (added in v0.26.0).
* Towns build bridges over rails [imported](https://www.tt-forums.net/viewtopic.php?f=33t=76052) (added in v0.21.0), in trunk as of commit 50a0cf19.
#### Caveats for loading savegames from the [Spring 2013 Patch Pack](http://www.tt-forums.net/viewtopic.php?f=33&t=66892):
* This is not guaranteed to be bug free
* Savegames with huge airports are rejected
* Map sizes greater than 16k x 16k are rejected
* PAX signals/stations and traffic lights are cleared, leaving ordinary signals/stations/roads
* Rail ageing/grass on tracks, trip histories, leave order/wait for cargo, auto advertising campaigns, base cost multipliers and other features not in this patch pack are dropped/ignored.
* SpringPP v2.0.102/103 only:
* Savegames which have aircraft approaching, landing, taking off or landed at an oil rig are rejected
* The inflation cost multiplier is adjusted on load
#### A note on branches
Many features have two branches, the *feature* branches are just the raw features, without any modified savegame code.
There are not generally savegame compatible with anything else, except for loading of trunk savegame versions at or before the point where the branch diverged from trunk.
All other load attempts may result in undefined behaviour.
The *feature-sx* branches use the savegame framework in the *save_ext* branch.
We'll keep support going on old platforms as long as someone is interested in supporting them, except where it means the project can't move forward to keep up with language and compiler features.
OpenTTD features multiple types of add-on content, which modify gameplay in different ways.
Most types of add-on content can be downloaded within OpenTTD via the 'Check Online Content' button in the main menu.
Add-on content can also be installed manually, but that's more complicated; the [OpenTTD wiki](https://wiki.openttd.org/OpenTTD) may offer help with that, or the [OpenTTD directory structure guide](./docs/directory_structure.md).
### 1.5.1) AI opponents
OpenTTD comes without AI opponents, so if you want to play with AIs you have to download them.
The easiest way is via the 'Check Online Content' button in the main menu.
You can select some AIs that you think are compatible with your playing style.
AI help and discussions may also be found in the [AI section of the forum](https://www.tt-forums.net/viewforum.php?f=65).
### 1.5.2) Scenarios and height maps
Scenarios and heightmaps can be added via the 'Check Online Content' button in the main menu.
### 1.5.3) NewGRFs
A wide range of add-content is available as NewGRFs, including vehicles, industries, stations, landscape objects, town names and more.
NewGRFs can be added via the 'Check Online Content' button in the main menu.
See also the wiki [guide to NewGRFs](https://wiki.openttd.org/NewGRF) and [the forum graphics development section](https://www.tt-forums.net/viewforum.php?f=66).
### 1.5.4) Game scripts
Game scripts can provide additional challenges or changes to the standard OpenTTD gameplay, for example setting transport goals, or changing town growth behaviour.
Game scripts can be added via the 'Check Online Content' button in the main menu.
See also the wiki [guide to game scripts](https://wiki.openttd.org/Game_script) and [the forum graphics game script section](https://www.tt-forums.net/viewforum.php?f=65).
### 1.6) OpenTTD directories
OpenTTD uses its own directory structure to store game data, add-on content etc.
For more information, see the [directory structure guide](./docs/directory_structure.md).
### 1.7) Compiling OpenTTD
If you want to compile OpenTTD from source, instructions can be found in [COMPILING.md](./COMPILING.md).
## 2.0) Contact and Community
'Official' channels
- [OpenTTD website](https://www.openttd.org)
- IRC chat using #openttd on irc.oftc.net [more info about our irc channel](https://wiki.openttd.org/Irc)
- [OpenTTD on Github](https://github.com/openTTD/) for code repositories and for reporting issues
- [forum.openttd.org](https://forum.openttd.org/) - the primary community forum site for discussing OpenTTD and related games
- [OpenTTD wiki](https://wiki.openttd.org/) community-maintained wiki, including topics like gameplay guide, detailed explanation of some game mechanics, how to use add-on content (mods) and much more
'Unofficial' channels
- the OpenTTD wiki has a [page listing OpenTTD communities](https://wiki.openttd.org/Community) including some in languages other than English
### 2.1) Contributing to OpenTTD
We welcome contributors to OpenTTD. More information for contributors can be found in [CONTRIBUTING.md](./CONTRIBUTING.md)
### 2.2) Reporting bugs
Good bug reports are very helpful. We have a [guide to reporting bugs](./CONTRIBUTING.md#bug-reports) to help with this.
Desyncs in multiplayer are complex to debug and report (some software development skils are required).
Instructions can be found in [debugging and reporting desyncs](./docs/debugging_desyncs.md).
### 2.3) Translating
OpenTTD is translated into many languages. Translations are added and updated via the [online translation tool](https://translator.openttd.org).
## 3.0) Licensing
OpenTTD is licensed under the GNU General Public License version 2.0.
For the complete license text, see the file '[COPYING.md](./COPYING.md)'.
This license applies to all files in this distribution, except as noted below.
The squirrel implementation in `src/3rdparty/squirrel` is licensed under the Zlib license.
See `src/3rdparty/squirrel/COPYRIGHT` for the complete license text.
The md5 implementation in `src/3rdparty/md5` is licensed under the Zlib license.
See the comments in the source files in `src/3rdparty/md5` for the complete license text.
The implementations of Posix `getaddrinfo` and `getnameinfo` for OS/2 in `src/3rdparty/os2` are distributed partly under the GNU Lesser General Public License 2.1, and partly under the (3-clause) BSD license.
The exact licensing terms can be found in `src/3rdparty/os2/getaddrinfo.c` resp. `src/3rdparty/os2/getnameinfo.c`.
