# OpenTTD

## Table of contents

- 1.0) [About](#10-about)

    - 1.1) [Downloading OpenTTD](#11-downloading-openttd)

    - 1.2) [OpenTTD gameplay manual](#12-openttd-gameplay-manual)

    - 1.3) [Supported platforms](#13-supported-platforms)

    - 1.4) [Installing and running OpenTTD](#14-installing-and-running-openttd)

    - 1.5) [Add-on content / mods](#15-add-on-content--mods)

    - 1.6) [OpenTTD directories](#16-openttd-directories)

    - 1.7) [Compiling OpenTTD](#17-compiling-openttd)

- 2.0) [Contact and community](#20-contact-and-community)

    - 2.1) [Contributing to OpenTTD](#21-contributing-to-openttd)

    - 2.2) [Reporting bugs](#22-reporting-bugs)

    - 2.3) [Translating](#23-translating)

- 3.0) [Licensing](#30-licensing)

- 4.0) [Credits](#40-credits)

## 1.0) About

OpenTTD is a transport simulation game based upon the popular game Transport Tycoon Deluxe, written by Chris Sawyer.

It attempts to mimic the original game as closely as possible while extending it with new features.

OpenTTD is licensed under the GNU General Public License version 2.0, but includes some 3rd party software under different licenses.

See the section ["Licensing"](#30-licensing) below for details.

## 1.1) Downloading OpenTTD

OpenTTD can be downloaded from the [official OpenTTD website](https://www.openttd.org/).

Both 'stable' and 'nightly' versions are available for download:

- most people should choose the 'stable' version, as this has been more extensively tested

- the 'nightly' version includes the latest changes and features, but may sometimes be less reliable

OpenTTD is also available for free on [Steam](https://store.steampowered.com/app/1536610/OpenTTD/), [GOG.com](https://www.gog.com/game/openttd), and the [Microsoft Store](https://www.microsoft.com/p/openttd-official/9ncjg5rvrr1c). On some platforms OpenTTD will be available via your OS package manager or a similar service.

## 1.2) OpenTTD gameplay manual

OpenTTD has a [community-maintained wiki](https://wiki.openttd.org/), including a gameplay manual and tips.

## 1.3) Supported platforms

OpenTTD has been ported to several platforms and operating systems.

The currently supported platforms are:

- Linux (SDL (OpenGL and non-OpenGL))

- macOS (universal) (Cocoa)

- Windows (Win32 GDI / OpenGL)

Other platforms may also work (in particular various BSD systems), but we don't actively test or maintain these.

### 1.3.1) Legacy support

Platforms, languages and compilers change.

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.

We guarantee that every revision of OpenTTD will be able to load savegames from every older revision (excepting where the savegame is corrupt).

Please report a bug if you find a save that doesn't load.

## 1.4) Installing and running OpenTTD

OpenTTD is usually straightforward to install, but for more help the wiki [includes an installation guide](https://wiki.openttd.org/en/Manual/Installation).

OpenTTD needs some additional graphics and sound files to run.

For some platforms these will be downloaded during the installation process if required.

For some platforms, you will need to refer to [the installation guide](https://wiki.openttd.org/en/Manual/Installation).

### 1.4.1) Free graphics and sound files

The free data files, split into OpenGFX for graphics, OpenSFX for sounds and

OpenMSX for music can be found at:

Please follow the readme of these packages about the installation procedure.

The Windows installer can optionally download and install these packages.

### 1.4.2) Original Transport Tycoon Deluxe graphics and sound files

If you want to play with the original Transport Tycoon Deluxe data files you have to copy the data files from the CD-ROM into the baseset/ directory.

It does not matter whether you copy them from the DOS or Windows version of Transport Tycoon Deluxe.

The Windows install can optionally copy these files.

You need to copy the following files:

- sample.cat

- trg1r.grf or TRG1.GRF

- trgcr.grf or TRGC.GRF

- trghr.grf or TRGH.GRF

- trgir.grf or TRGI.GRF

- trgtr.grf or TRGT.GRF

### 1.4.3) Original Transport Tycoon Deluxe music

If you want the Transport Tycoon Deluxe music, copy the appropriate files from the original game into the baseset folder.

- TTD for Windows: All files in the gm/ folder (gm_tt00.gm up to gm_tt21.gm)

- TTD for DOS: The GM.CAT file

- Transport Tycoon Original: The GM.CAT file, but rename it to GM-TTO.CAT

## 1.5) Add-on content / mods

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/) 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/en/Manual/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/en/Manual/Game%20script) 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/en/Development/IRC%20channel)

- [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/en/Community/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`.

The fmt implementation in `src/3rdparty/fmt` is licensed under the MIT license.

See `src/3rdparty/fmt/LICENSE.rst` for the complete license text.

## 4.0 Credits

See [CREDITS.md](./CREDITS.md)

12.1 (2021-11-08)

------------------------------------------------------------------------

Feature: Button to toggle showing advanced signal types (#9617)

Change: Don't show screenshot GUI in screenshots (#9674)

Change: Suppress panning in intro game, while user is interacting with the GUI (#9645)

Change: Draw rotor in cursor when dragging helicopters in depots (#9612)

Fix: Invalid memory access when loading a currency NewGRF (#9675)

Fix #9579: Object and HQ construction is Construction cost, not Property Maintenance (#9673)

Fix #9669: Ships exiting a blocked depot/lock could exit in the wrong direction (#9672)

Fix: Every 16th client never reconnects after server restart (#9666)

Fix #9643: Screenshots were always written as BMP files (#9644)

Fix #9630: Intro game could zoom in/out more than allowed by settings (#9633)

Fix #9626: Incorrect loading of script saved data (#9629)

Fix: Emergency crash save had the wrong NewGRF list saved in it (#9627)

Fix #9595: Always use plural forms of cargo for subsidy strings (#9619)

Fix #9614: Refresh rate dropdown was still active when vsync was enabled (#9618)

Fix: Don't use 'server address' string in server list when displaying an invite code (#9615)

12.0 (2021-10-17)

------------------------------------------------------------------------

Add: [Network] Keep the refresh button in lowered state while refreshing (#9600)

Add: Console command to list search directories for various things (#9583)

Fix: Try all possible reverse directions when a ship reaches a dead end (#9610)

Fix: Incorrect Romanian own name (#9598)

Fix #9591: Update station docking tiles upon placing a water object on a docking tile (#9594)

Fix #9548: [Squirrel] Crash during engine cleanup after reaching memory limit on realloc (#9592)

Fix #9588: [Squirrel] Reaching memory limit during script registration could prevent further script detections (#9589)

Fix: Make ships more likely to find their destination at the cost of slightly worse paths (#9576)

Change: Reverse ship when leaving docks if a better path exists (#9610)

Change: Allow all tiles around docks to be docking tiles (#9578)

12.0-RC1 (2021-09-25)

------------------------------------------------------------------------

Feature: Display icon/text whether vehicle is lost in vehicle (list) window (#9543)

Feature: [MacOS] Add selected toolbar buttons to MacBook Pro Touch Bar (#9511)

Feature: Button to open order window from vehicle shared orders window (#9325)

Feature: Ctrl-Clicking shared order vehicle list opens order window (#9325)

Feature: Multiple rotating views on title screen (#8980)

Feature: Hide block signals in GUI by default (#8688)

Add: [Script] Allow GameScripts to build neutral objects (#9568)

Add: [Network] Allow sending chat messages via admin port (#9563)

Add: [AI/GS] Missing water related functions and objects (#8390)

Fix: Industry funding window did not update when changing funding method (#9572)

Fix #9562: [NewGRF] Handle case of invalid Action2 with zero results (#9564)

Fix: Incorrect error messages when placing water in scenario editor (#9560)

Fix #9484: Update locale currencies settings config map (#9559)

Fix: Prevent train reversing when entirely inside a train depot (#9557)

Fix: [Network] Add back 'Spectate' option to company toolbar menu (#9556)

Fix #9463: [Win32] Work around XAudio2 crashes (#9549)

Fix #8603: Don't give focus to text filter when opening Object GUI (#9547)

Fix #9241: Grove and forest tree brushes did not also create rainforest terrain (#9542)

Fix: [Network] Several crashes in our network code (#9534, #9456)

Fix #9527: Crash when trying to place multi-tile objects at map edge (#9529)

Fix: [Network] SendCmdNames only sent one name per packet (#9528)

Fix #9407: Desync when founding a town nearby a station (#9526)

Fix #9521: Don't load at just removed docks that were part of a multi-dock station (#9524)

Fix: Ships always tried to avoid docking tiles when pathfinding (even if nothing was on them) (#9522)

Fix: [Network] Convert server_advertise to server_game_type in config file (#9515)

Fix #9490: [Network] A full server couldn't be queried (#9508)

Fix: [Network] Don't show GameScript " (v0)" for old servers (#9507)

Fix: [Network] Show query errors in the server listing instead of error popup (#9506)

Fix: [Network] Crash when last-joined server was no longer available (#9503)

Fix #9501: [Network] Crash when more than one game-info query was pending (#9502)

Fix: Wrong error message when building canals over ship depots / locks (#9410)

Fix: Reduce cost of building canals over objects on sea (#9410)

Change: [Linkgraph] Delete links only served by vehicles stopped in depot (#9499)

12.0-beta2 (2021-08-19)

------------------------------------------------------------------------

Feature: [Linkgraph] Prioritize faster routes for passengers, mail and express cargo (#9457)

Fix: Wrong town window refreshed when building an airport with noise levels enabled (#9497)

Fix: Improve wording of network-related messages (#9494, #9495, #9500)

Fix: [Network] Report reuse of invite-code (#9487)

Fix: [Network] Connecting with the same client name thrice hangs the server (#9485)

12.0-beta1 (2021-08-15)

------------------------------------------------------------------------

Feature: [Network] Remove lobby window; pressing "Join Game" now immediately joins a server (#9467)

Feature: [Network] Synchronize server name to clients and display in Online Players window (#9472)

Feature: [Network] Mention you are a spectator in the status bar (#9471)

Feature: [Network] No longer require port-forwarding to host a server (#9443, #9447)

Feature: [Network] Allow setting your server visibility to "invite-only" (#9434)

Feature: [Network] Join servers based on their invite code (#9432)

Feature: Raise the maximum NewGRF limit to 255 (#9428)

Feature: Persistent rotation of numbered auto/netsave after restart (#9395, #9397)

Feature: [NewGRF] Maximum curve speed modifier for rail vehicles (#9346)

Feature: Move sensitive information to secrets.cfg and private information to private.cfg (#9298)

Feature: Signed Windows builds (#9294)

Feature: [NewGRF] Define refittability of default vehicles using cargo classes (#9148)

Feature: Configurable subsidy duration, up to 5000 years (#9081)

Feature: [Network] Rework in-game Online Players window (#9067)

Feature: [Network] Show previous chat history when the chat message box is open (#9025)

Feature: Button to reset game settings to their default values (#8958)

Feature: Press Ctrl to build diagonal rivers in Scenario Editor (#8880)

Feature: Set wagon replacement per group when using autoreplace (#7441)

Add: [Network] Open Online Players window on starting/joining a server (#9479)

Add: [Script] Basic information about loaded NewGRFs for scripts (#9464)

Add: [AI] Get the number of vehicles in a given group (#9462)

Add: [Network] Inform network clients what game-script a server is running (#9441)

Add: Hindi translation (#9086)

Add: [Network] Ensure players fill in a name instead of defaulting to "Player" (#9080)

Change: Allow pause/unpause console command in single player (#9342)

Change: Make savegame format self-descriptive and consistent across all objects (#9322, #9335, #9338, #9339)

Change: By default, make "unload all" leave stations empty (#9301)

Change: Reworked the debug levels and messages for network logs (#9230, #9251)

Change: [Emscripten] Set default scrolling mode to non-pointer-locking (#9191)

Change: Use neutral pronouns for various strings (#9189, #9203, #9228)

Change: Make the town directory horizontally resizable (#9157)

Change: Allow non-ASCII currency separators (#9121)

Change: [NewGRF] Display a pop-up window for Errors with severity ERROR (#9119)

Change: Treat languages as finished, if translations are 75% completed (#9019, #9086)

Change: Disable NewGRF window apply button if no change was made (#8934)

Fix: [Script] Crash when iterating lists of which the key is larger than 32bit (#9465)

Fix: [Network] Desync due to use of unstable sort when distributing cargo production (#9460)

Fix #9440: Negative cargo payments not being handled correctly (#9455)

Fix: [Network] Crash when joining a server again after a TCP disconnect (#9453)

Fix: Don't enable rename button for network clients in build vehicle window (#9452)

Fix: Money could underflow and wrap around (#9451)

Fix: Parse the console settings the same way as config settings (#9438)

Fix: Ensure no more than the allowed number of NewGRFs are loaded from the configuration (#9430)

Fix: [NewGRF] Overflow when determining cargo mask for string code 9A 1E (#9423)

Fix: Integers for scripts are 64bit, but saved as 32bit (#9415)

Fix #9392: [Script] Return a valid value with GetBuildWithRefitCapacity even when AIs are maxed out in vehicles (#9393)

Fix #8169: Crash when autoreplacing vehicle with no orders (#9387)

Fix: Wrong cargo line position in IndustryCargo window (#9383)

Fix: Race-condition during startup of NewGRF scan (#9382)

Fix: Don't propagate Shift/Ctrl state till next game-tick (#9381)

Fix: Prevent palette updates during copying to the video driver (#9379)

Fix: [Network] Determining GetNetworkRevisionString could overflow and underflow its buffer (#9372)

Fix #9358: Don't skip empty files in tar archives (#9367)

Fix: For old savegames, station bus/truck station cache was not updated (#9366)

Fix #9353: [Script] Garbage collecting on priority queues could crash the game (#9356)

Fix: Respect the autosave_on_exit setting for Null video driver (#9343)

Fix: Compatible NewGRFs in crash-log reported wrong MD5 hash (#9340)

Fix: [Script] Ensure the saved script strings are properly validated and terminated (#9336)

Fix #9316: Town bridge length limit check incorrect above 250k inhabitants (#9318)

Fix: Limit heightmap sizes to 8192x8192 (#9307)

Fix #9281: Money generating exploit when buying out a company (#9300)

Fix: Part of a tile might not be redrawn when terraforming (#9296)

Fix: [OpenGL] Increase timeout when waiting for the GPU to be done with the drawing buffer (#9282)

Fix: Vehicles sent in the wrong direction if there is no path to the destination (#9280)

Fix #9264: Do not attach temporary wagons to free wagon chains when autoreplacing (#9278)

Fix #9267: [Script] Crash during garbage collection (#9275)

Fix: Encountering two-way red signals could prune unrelated Pathfinder branches (#9271)

Fix #9255: [Network] Crash when hostname is not found (#9259)

Fix #9256: Invalid read after free when replacing train chains (#9258)

Fix: [Emscripten] Force secure WebSockets over HTTPS (#9248)

Fix #9242: Tree tick handler did not scale by map size (#9246)

Fix: [Network] Mark server as offline when no longer reachable (#9244)

Fix: [Network] Don't rebuild the host-list during iterating the list (#9240)

Fix: [Network] Don't mark the last-joined server as a manually added server (#9239)

Fix: [Network] Clients leaving because of broken connections was not broadcasted (#9238)

Fix: [Network] Check on CIDR for netmask check considered everything valid (#9235)

Fix: Creating screenshots on dedicated servers failed (#9232)

Fix: Leaking file descriptors for downloaded content (#9229)

Fix: Spelling of several town names (#9222)

Fix #9209: Game hangs when resizing highscore/news window if the screen is too small (#9210)

Fix: [Network] Optimize creating network connections for clients using IPv4 and IPv6 (#9199)

Fix #9186: Fix incorrect bounding box height causing station sprite glitch (#9187)

Fix: Truncating strings in settings could leave invalid UTF-8 characters (#9121)

Fix: Many issues related to window scaling (#9087, #9219)

Fix: Invalidate cached vehicle colourmaps when changing liveries setting (#9006)

Fix #8981: Don't attempt to re-reserve path if already entering/entered depot (#9000)

Fix: Missing 'Town names:' colon in map gen GUI (#8986)

Fix: Sorting and filtering industries that produce/accept many cargoes (#8468)

Remove: [Network] COMPANY_INFO packets (#9475)

Remove: [Network] A server can no longer set a limit to the amount of spectators allowed (#9466)

Remove: Arbitrary limit on number of statically loaded NewGRFs (#9431)

Remove: [Network] Language and map-name from server information (#9070)

1.11.2 (2021-05-03)

------------------------------------------------------------------------

Change: [Win32] Limit hardware accelerated video driver to OpenGL 3.2 or higher (#9077)

Change: More improvements to the GUI at different scales (#9075, #9102, #9107, #9133, #9174, #9183)

Fix: Query windows could be partially drawn (#9184)

Fix #9113: Crash when removing an airport that exists in an aircraft's orders (#9182)

Fix #9117: [Fluidsynth] Hang when changing song (#9181)

Fix: String validation could leave invalid UTF-8 encoded strings (#9096)

Fix: [Network] Out-of-bounds memory access with modified servers sending too short password salts (#9176)

Fix: Crash when extra viewport with zero height has sign in view (#9175)

Fix #9147: Crash when taking screenshots (#9169)

Fix #6598: [Network] Prevent crashes when (re)joining network game by falling back to main menu first (#9163)

Fix #9152: Screenshot success popup window was treated as an error (#9159)

Fix: Fast-forward stuttering when vsync is enabled (#9140)

Fix: [Network, Win32] Network errors were handled badly (#9116)

Fix: [Network] Savegame transfer could stall in rare cases (#9106)

Fix #9097: [NewGRF] Cargo initial payment variable was being truncated (#9098)

Fix: [NewGRF] Industry variable 66 and object variable 46 erroneously truncated the distance (#9088)

Fix: [NewGRF] Industry variables 65 and 66 ignored the parameter, and always used the north tile (#9088)

Fix: Do not include regression test AI in bundle (#9068, #9164)

Fix #9062: [Win32] Version in executable was not set to current release version (#9066, #9154)

1.11.1 (2021-04-18)

------------------------------------------------------------------------

Feature: Toggle to enable/disable vsync (#8997)

Feature: Volume controls in the Game Options window, and better defaults (#8943)

Add: Hotkey to focus object and rail filters (#8908)

Add: Better plural support for Romanian (#8936)

Change: Improve layout and spacing of several windows at different GUI scales (#9041, #9042, #9044, #9050)

Change: [Win32] Use user UI language setting for initial language selection (#8974)

Change: Make effect volume scale more intuitively (#8945, #8950)

Change: Improve padding of Object & Rail station windows (#8929)

Fix #6322: [Script] Crash when script allocates too much memory, now kills script instead (#9047)

Fix #7513: [Script] Crash on garbage collection with misbehaving script (#9040)

Fix #9028: [OpenGL] Crash when changing max sprite zoom level (#9032)

Fix #8874: show a warning when a NewGRF scan is requested multiple times (#9022)

Fix: Desync when GS unlocks railtype with wagon unlock (#9021)

Fix #9015: [Win32] Crash on running "pwd" command in the console (#9016)

Fix #9008: Validate starting year given on the command line (-t) (#9014)

Fix #8878: [Network] Slow DNS queries could block the server and disconnect clients (#9013)

Fix: Improve validation of OpenGL video driver to avoid crashes (#9007)

Fix: Credits scrolled too slowly with larger font sizes (#8994)

Fix #8977: Crash when altering max sprite resolution (#8993)

Fix #8956: Industry disaster news messages showed the wrong location (#8992)

Fix: [Win32] Font glyphs of certain widths had broken rendering (#8990)

Fix #8930: [Win32] Duplicate text input issue for systems using IME (#8976)

Fix: [Network] Potential stale client entries in client list (#8959)

Fix: Graphical issues when dragging measurement tooltips (#8951)

Fix: [Fluidsynth] Use provided default soundfont if available (#8948, #8953)

Fix #8935: [macOS] Crash on save (#8944)

Fix #8922: Crash when selling shared vehicles with shared vehicle window open (#8926)

Fix: Compiling on armhf (Raspberry Pi) (#8924)

1.11.0 (2021-04-01)

------------------------------------------------------------------------

Feature: Allow setting a custom terrain type to define highest peak (#8891)

Feature: Auto-detect map height limit based on generated map (#8891)

Feature: Setting to indicate desert coverage for tropic climate and snow coverage for arctic climate (replaces snow line height) (#8891)

Add: Allow setting the highest mountain for heightmaps (#8891)

Change: Scale exported heightmaps to highest peak and inform the user of this value (#8891)

Change: Remove "maximum map height" from the New Game GUI (#8891)

Fix #8803: Only auto-remove signals when rail can be built (#8904)

Fix #8565: Stopped road vehicle displays a speed different than 0 (#8901)

Fix #8886: Don't try to resolve folders within tars named '.' (#8893)

Fix: Placing random trees in SE crashes the game (#8892)

Fix #8875: Filter string in station window breaks flow in user interface (#8885)

Fix #8871: [OpenGL] Initialize all buffers after resize and clear back buffer (#8877)

Fix: OpenGL performance with some AMD GPUs (#8876)

Fix: Recompute road/railtype availability after disabling the engine (#8872)

Fix: OSK layout not scaled for 2x or 4x GUI scale (#8868)

1.11.0-RC1 (2021-03-14)

------------------------------------------------------------------------

Feature: Option to (dis-)allow hardware accelerated video drivers (#8819)

Feature: Option to set display refresh rate (#8813)

Feature: Allow custom width/height of screenshot and making heightmap screenshots via console (#8804)

Feature: Allow filtering on name in rail station window (#8706)

Feature: Setting for highest resolution of sprites to use (#8604)

Add: Make NewGRF Scanner / World Generation update smoother and make aborting it react faster (#8830)

Add: Malaysia Ringgit as Currency (#8783)

Add: "Engines only" filter in build train window (#8733)

Change: De-limit framerate window's framerate (#8772)

Change: Clarify what effect town interactions have (#8744)

Change: Don't show global goals in company goal windows (#8709)

Change: Recolour graph windows to brown (#8700)

Fix #8855: Bootstrap could result in an empty screen when bootstrap fails (#8856)

Fix #8851: Don't allow infinite "exec" depth in script, but limit to 10 deep (#8852)

Fix #8647: Incorrect drawing order of tram catenary sprites (#8843)

Fix #8711: Having gui_zoom lower than zoom_min causes a crash (#8835)

Fix #8810: "aircraft out of fuel" news shows the wrong place (#8832)

Fix #8833: Don't reload NewGRFs when we are shutting down (#8830)

Fix: Scale padding between elements the same as other padding (#8829)

Fix #8808: [OSX, OpenGL] Crash on switching blitters due to double-mapping the video buffer (#8822)

Fix #8784: Using Alt+Enter doesn't update the fullscreen toggle visibly (#8820)

Fix #8817: Keep NewGRF order for object class sorting (#8818)

Fix #8809: Crash when removing airport when hangar window open (#8815)

Fix #8799: Crash when Search Internet in Multiplayer (#8801)

Fix #8775: [Win32] Don't create the main window when Alt-Tabbing back into fullscreen (#8792)

Fix #8774: Black screenshots when using 40bpp-blitter (#8791)

Fix: [OSX] Hide dock when entering fullscreen (#8789)

Fix: Bootstrap fails to start on clean install (#8788)

Fix: Terraform limit acts random when maxing out per_64k_frames setting (#8782)

Fix: Max-value of fast-forward-speed-limit can be outside its storage size (#8769)

1.11.0-beta2 (2021-02-28)

------------------------------------------------------------------------

Feature: Add setting to limit fast-forward speed (#8766)

Feature: Significant performance improvements to all video drivers (#8605, #8652, #8660, #8685, #8702, #8703, #8707, #8726, #8740)

Feature: Configurable display refresh-rate, default to 60fps (#8680)

Feature: Automatically upload releases to Steam (#8644)

Feature: Generic Linux builds (#8641)

Feature: [GS] Allow non-question type windows to have no buttons (#8638)

Feature: [macOS] ZIP build (#8614)

Feature: Object class selection string filtering (#8603)

Feature: 'Remove all industries' button in scenario editor (#8550)

Feature: Automatic UI and font zoom levels when supported by the OS (#8537)

Feature: [macOS] Render screen at native resolution by default for HiDPI screens (#8519)

Feature: OpenGL video driver (#7744)

Add: Indonesia Rupiah currency (#8616)

Change: Improve graph period markings (#8732)

Change: Make pathfinder account for maximum order speed, if set (#8722)

Change: Darken graph grid lines for legibility (#8690)

Change: Make order window hotkeys toggle for load & unload variants (#8669)

Change: Use a more specific error message when attempting to bulldoze your own HQ (#8667)

Change: Convert .md to .rtf for Windows/Mac packages (#8617)

Change: Move the 'tree placer algorithm' & 'road drive side' settings to the Settings window (#8566)

Change: Move town name generator selection to mapgen GUI (#8566)

Change: [macOS] Native font rendering (#8518)

Fix: Display of network lobby windows for different GUI sizes (#8765)

Fix: Don't desync if client leaves before you finish downloading map (#8755)

Fix: Allow estimating vehicle clone cost even if short on money (#8748)

Fix: Don't notify twice that a client left because of a timeout (#8746)

Fix: Vehicle cursor size did not account for the interface zoom level (#8739)

Fix #8123: Trams on half-tiles couldn't find depots (#8738)

Fix #8276: [NewGRF] Crash when an object's size was not set (#8719)

Fix #8349: Close depot vehicle list windows when closing the depot window (#8717)

Fix #8594: [NRT] Road pathfinder did not account for roadtype speed limits or lengths of tunnels/bridges (#8710)

Fix: Whole status bar instead of money widget refreshed on money change (#8692)

Fix: Unnecessary status bar redraws when there is no news to show (#8691)

Fix: New orders are non-stop by default (#8689)

Fix: Framerate window showed a slightly higher rate than actually measured (#8682)

Fix: Autorenew failure advice due to bad refit being shown to all companies (#8681)

Fix #8625: Wrong ending year was displayed in highscore table (#8672)

Fix #8620: Scale spacing between date & news in history window according to font scaling (#8671)

Fix: [Win32] Set minimum resolution for timers to 1ms (#8660)

Fix: Mention our websites with https:// (instead of http://) (#8657)

Fix: [Emscripten] Open links in browser (#8655)

Fix: Don't crash when towns upgrade road tiles during expansion (#8651)

Fix #8029: [SDL2] Blank display when under Wayland (#8648)

Fix: Default Network Server List sorter put compatible servers in wrong order (#8626)

Fix: Use non-pulsating red highlight for coverage (#8622)

Fix: Center text and image in vehicle statusbar vertically (#8602)

Fix: Don't walk out of the map when trying to build tunnels (#8600)

Fix: Off-by-one error in desert/rainforest positioning at world gen (#8588)

Fix #8037: Crash when restarting AI that is controlling the same company as the player (#8587)

Fix: Stopped ships shouldn't block depots (#8578)

1.11.0-beta1 (2021-01-22)

------------------------------------------------------------------------

Feature: [GS] Ability to set some extra text in the industry window (#8576)

Feature: Show rainforest under vegetation on smallmap (#8562)

Feature: Automatically determine window size on new install (#8536)

Feature: Towns can build tunnels (#8473)

Feature: Make maximum length of town bridges depend on population (with a minimum limit of 4) (#8439)

Feature: New icons for renaming and go-to-location on GUI windows, and improve consistency of usage (#8455)

Feature: Support for ARM64 on Apple Silicon and Windows (#8340, #8577, #8583)

Feature: Add an option to disable tree growth completely (#8415)

Feature: Support for Emscripten (play-OpenTTD-in-the-browser!) (#8355)

Feature: Show group name as part of the default vehicle name (#8307)

Feature: "Frozen" economy setting that stops production changes and industry closures (#8282)

Feature: New velocity unit "tiles/day" (#8278)

Feature: Option to automatically remove signals when placing rail (#8274)

Feature: Increase max possible distance from border for oil refineries and rigs (#8237)

Feature: Improve tree planting window, and allow planting 'clumps' of trees by dragging in the scenario editor (#8234)

Feature: Indian Rupee (INR) currency (#8136)

Feature: [GS] Ability to give a company exclusive access to an industry (#8115)

Feature: Hotkeys for Land Info window, News window & close error window (#8053, #8266)

Feature: Improve rendering of large viewports (#7962)

Feature: [GS] Influence industry production changes from GameScript (#7912)

Feature: [GS] Push-buttons on storybook pages (#7896)

Feature: Option to group vehicle lists by shared orders (#7028)

Feature: Drag-and-drop vehicles in group GUI for shared order groups (#7028)

Add: [GS] A tile parameter to GSCompany::ChangeBankBalance for showing changes more visually (#8573)

Add: [NewGRF] Allow NewGRF vehicles to query the current rail/road/tram type (#8554)

Add: [Script] ScriptCargo::GetName for the human readable name of cargoes (#8544)

Add: "reload" console command to reload the current scenario or heightmap (#8527)

Add: [NewGRF] Flag to test if inflation is on or off (#8427)

Add: [Script] Native priority queue (useful for things like pathfinders) (#8091)

Add: [NewGRF] Industry behaviour flag to override second cargo production clamping for water industries when using smooth economy (#8079)

Change: [SDL2] Start game on the screen where the cursor is (#8572)

Change: Use a dark background for all profit graphs to increase contrast (#8557)

Change: Reword warning in cheat window (#8538)

Change: Enable the toolbar for road/rail/dock/airport, regardless of vehicle availability (#8521)

Change: For arctic and tropical climates, make sure at least a few hills are generated (#8513)

Change: Destroying a tunnel/bridge now sells the tracks before destroying the tunnel/bridge (#8508)

Change: Move "give money" from client-list to company window (#8500)

Change: [MacOS] Hide Dock and menu when in fullscreen mode (#8487)

Change: Improve performance for complex vehicle chains by resolving sprites less frequently (#8485)

Change: Make engine reliability independent of introduction date (#8470)

Change: Some default settings to improve gameplay for new players - default non-stop orders on, disable inflation, quick goto orders, show track reservations, and more (#8463)

Change: Converting town-owned road types now requires a positive town rating (#8457)

Change: Rework server list buttons for searching LAN/internet servers (#8426)

Change: Add some styling to GS question windows depending on the type (#8422)

Change: [Linkgraph] Speed up game exit by allowing job threads to be aborted early (#8416)

Change: Prevent towns from building dead-end road bridges (#8401)

Change: Send network error to the server before making an emergency save (#8387)

Change: Extend the allowed range for max loan setting up to £2 billion (#8386)

Change: Don't display OS name when exiting the game (#8366)

Change: Save openttd.cfg immediately on changing a setting (#8358)

Change: Autorenew now defaults to on (#8352)

Change: [NewGRF] Also use aircraft property 12 for helicopters (#8347)

Change: Service at depot also resets breakdown chance (#8317)

Change: Use key names instead of characters in hotkey.cfg (#8291)

Change: Allow command cost-estimation while paused (#8222)

Change: Always apply inflation from 1920 to 2090, no matter the game start year (#7589)

Change: Use CMake for build system (#7270)

Change: [Linkgraph] Pause the game when linkgraph jobs lag (#7081)

Change: Place "Group by" above "Sort by" in station window for consistency (#7028)

Fix #8589: Prevent desyncs with vehicle motion counters and NewGRFs (#8591)

Fix #7670: Improve pathfinder performance when lost vehicles are blocked from moving (#8568)

Fix: Inform user if a custom font failed to load due to missing glyphs (#8559)

Fix: Don't allow wagon chains (without an engine) to exceed maximum train length (#8533)

Fix #7619: Super fast NewGRF aircraft could be unable to land (#8531)

Fix: Improve connection retries for the content server in cases of broken networking (#8530)

Fix #7972: Show invalid orders to stations that don't accept the vehicle (#8516)

Fix: Error when trying to clone a vehicle with invalid orders (#8515)

Fix #8050: Various off-by-one errors in how the end-year of the game was used (#8512)

Fix #8332: Aborting vehicle group drag & drop could cause crashes (#8511)

Fix #8168: Allow relocating HQ partially over an existing HQ (#8510)

Fix #8068: Allow selling tram track regardless of bank balance (#8509)

Fix #7604: Prevent houses from wandering away from roads (#8507)

Fix: Make the "password" button the same size as the other buttons in the Company window (#8500)

Fix #7611: Keep news about vehicle accidents around after the vehicle is cleaned up (#8497)

Fix: [MacOS] Full animation in fullscreen mode was reducing the height of the window (#8491)

Fix: [MacOS] Loading custom fonts (#8484)

Fix: Network client makes emergency saves twice if the server is disconnected (#8477)

Fix #8462: Stop towns from trying to build roads on water (#8471)

Fix: [NewGRF] GetCurveSpeedLimit should use the railtype from the current tile (#8466)

Fix #8437: Crash when using certain heliports with certain rotated airports (#8458)

Fix #8437: Planes would land at the wrong height if the top corner of the airport was lowered (#8458)

Fix #8297: Infrastructure counters for road tunnels, bridges & depots (#8454)

Fix #6468: Don't store the version of AIs that are started via console (#8430)

Fix: Don't lower tree density if spreading is not enabled (#8413)

Fix: Prevent savegame version conflicts with certain old patchpacks (#8411)

Fix: [NewGRF] Variable 0x44 was always HZB_TOWN_EDGE for road stops (#8400)

Fix #8313: Use correct capitalization for TTO / DOS music files in the baseset metadata (#8385)

Fix: [NewGRF] Action 7/9 conditions 0x0F to 0x12 failed, if 'param' was 0x88 (#8382)

Fix: Change the working-dir searchpath when using '-c' (#8367)

Fix: Useless warning with -snull and no BaseSounds available (#8361)

Fix: Crash trying to load TTO/TTD savegames. (#8356)

Fix: [Script] Don't echo script exceptions to console (#8331)

Fix: Slovak ownname was using the wrong form (#8326)

Fix #8311: [NewGRF] Industry probability at map generation was scaled differently when set via property or callback (#8312)

Fix: Only check houses for cargo when generating subsidies with towns (#8305)

Fix: Sprite preview in sprite aligner was too small with scaled UI (#8288)

Fix: Spell 'Viewport' consistently (#8260)

Fix #7772: Show vehicle destination on mouseover when vehicle stopped (#8236, #8543)

Fix #8232: Huge screenshot warning was shown incorrectly (#8224)

Fix #8153: Report incompatible cargo/order when autoreplace fails (#8169)

Fix: [Script] ScriptMarine::AreWaterTilesConnected did not work for aqueducts (#8074)

Fix #7645: Add cost of clearing the sloped tile to the price of a dock (#7947)

Fix #6452: Reset only editable and visible settings from GUI (#7890)

Fix: Original terrain generator did not keep a single gap of water at the borders (#7883)

Remove: In-game console command "content select all" (#8363)

Remove: [OSX] Support for OSX older than 10.7, including QuickTime music driver (#8078)

1.10.3 (2020-08-09)

------------------------------------------------------------------------

Change: Also make roadside trees match the tree transparency option (#8245)

Fix: Center text and icons in the status bar vertically (#8273)

Fix: [NRT] Set invalid road and tram types for rail tunnel ends (#8269)

Fix #7980: Properly invalidate mouse-over station coverage highlight (#8263)

Fix #8250: [NRT] Company infrastructure window always omits last road/tramtype (#8251)

Fix #8162: [NRT] Improve error message when converting town owned road (#8247)

Fix #8216: Don't show floating text on autoreplace if cost is 0 (#8244)

Fix #8129: Crash if a news message expires while viewing the endgame screen (#8243)

Fix #8221: Use more specific error message when a bridge is too long (#8240)

Fix #8230: Resolve ".." when opening files in .tar (#8231)

Fix: A few race conditions in netcode (#8227, #8228, #8229)

Fix #7838: Crash relating to group creation and renaming (#8223)

Fix #8104: [SDL2] Fix window resizability when going from fullscreen to windowed mode (#8211)

Fix: Display banlist's indexes correctly (#8209)

Fix: Possible desync with subsidy creation (#8159)

Fix #8131: Draw small bridges pillars in more places (#8149)

1.10.2 (2020-06-01)

------------------------------------------------------------------------

Add: Ubuntu 20.04 packages (#8127)

Fix: [OSX] Possible crash on failure to set colourspace (#8181)

Fix #8166: Prevent crash from a NewGRF with an invalid RoadType (#8180)

Fix #8024: Make Online Content GUI more responsive while loading (#8179)

Fix #7970: Disable event loop when generating crash dump (#8176)

Fix: [Build] Compatibility with modern Visual Studio (#8170)

Fix: Trees would disappear completely after a few years if tree spread was disabled (#8160)

Fix #8155: Roadtype speed limit in scenario editor toolbar dropdown was doubled (#8156)

Fix: Desync after house replacement (#8151)

Fix #8137: New clients can't join (desync) after funding an industry (#8140)

Fix #8132: Corrupted savegame with station with multiple owners caused a crash (#8134, #8142)

Fix: Stop gamelog when recovering from a savegame load error (#8133)

Fix: Exceptionally unlikely issue when reading MIDI files (#8125)