simon/the-great-game
1
0
Fork 0
Code Issues Pull requests Actions Packages Projects Releases Wiki Activity

Merchant route selection: very basic stuff works

Browse source 
Tests pass.
This commit is contained in:
Simon Brooke 2019-05-13 21:46:43 +01:00
parent a7f90fa60f
commit 5619b9c1e5
15 changed files with 694 additions and 299 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
CHANGELOG.md Normal file
View file

@ -0,0 +1,24 @@
# Change Log
All notable changes to this project will be documented in this file. This change log follows the conventions of [keepachangelog.com](http://keepachangelog.com/).
## [Unreleased]
### Changed
- Add a new arity to `make-widget-async` to provide a different widget shape.
## [0.1.1] - 2019-05-13
### Changed
- Documentation on how to make the widgets.
### Removed
- `make-widget-sync` - we're all async, all the time.
### Fixed
- Fixed widget maker to keep working when daylight savings switches over.
## 0.1.0 - 2019-05-13
### Added
- Files from the new template.
- Widget maker public API - `make-widget-sync`.
[Unreleased]: https://github.com/your-name/the-great-game/compare/0.1.1...HEAD
[0.1.1]: https://github.com/your-name/the-great-game/compare/0.1.0...0.1.1

469
LICENSE
View file

@ -1,339 +1,214 @@
GNU GENERAL PUBLIC LICENSE THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
Version 2, June 1991 LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM
CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
Copyright (C) 1989, 1991 Free Software Foundation, Inc., 1. DEFINITIONS
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble "Contribution" means:
The licenses for most software are designed to take away your a) in the case of the initial Contributor, the initial code and
freedom to share and change it. By contrast, the GNU General Public documentation distributed under this Agreement, and
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not b) in the case of each subsequent Contributor:
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid i) changes to the Program, and
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether ii) additions to the Program;
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and where such changes and/or additions to the Program originate from and are
(2) offer you this license which gives you legal permission to copy, distributed by that particular Contributor. A Contribution 'originates' from
distribute and/or modify the software. a Contributor if it was added to the Program by such Contributor itself or
anyone acting on such Contributor's behalf. Contributions do not include
additions to the Program which: (i) are separate modules of software
distributed in conjunction with the Program under their own license
agreement, and (ii) are not derivative works of the Program.
Also, for each author's protection and ours, we want to make certain "Contributor" means any person or entity that distributes the Program.
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software "Licensed Patents" mean patent claims licensable by a Contributor which are
patents. We wish to avoid the danger that redistributors of a free necessarily infringed by the use or sale of its Contribution alone or when
program will individually obtain patent licenses, in effect making the combined with the Program.
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and "Program" means the Contributions distributed in accordance with this
modification follow. Agreement.
GNU GENERAL PUBLIC LICENSE "Recipient" means anyone who receives the Program under this Agreement,
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION including all Contributors.
0. This License applies to any program or other work which contains 2. GRANT OF RIGHTS
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not a) Subject to the terms of this Agreement, each Contributor hereby grants
covered by this License; they are outside its scope. The act of Recipient a non-exclusive, worldwide, royalty-free copyright license to
running the Program is not restricted, and the output from the Program reproduce, prepare derivative works of, publicly display, publicly perform,
is covered only if its contents constitute a work based on the distribute and sublicense the Contribution of such Contributor, if any, and
Program (independent of having been made by running the Program). such derivative works, in source code and object code form.
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's b) Subject to the terms of this Agreement, each Contributor hereby grants
source code as you receive it, in any medium, provided that you Recipient a non-exclusive, worldwide, royalty-free patent license under
conspicuously and appropriately publish on each copy an appropriate Licensed Patents to make, use, sell, offer to sell, import and otherwise
copyright notice and disclaimer of warranty; keep intact all the transfer the Contribution of such Contributor, if any, in source code and
notices that refer to this License and to the absence of any warranty; object code form. This patent license shall apply to the combination of the
and give any other recipients of the Program a copy of this License Contribution and the Program if, at the time the Contribution is added by the
along with the Program. Contributor, such addition of the Contribution causes such combination to be
covered by the Licensed Patents. The patent license shall not apply to any
other combinations which include the Contribution. No hardware per se is
licensed hereunder.
You may charge a fee for the physical act of transferring a copy, and c) Recipient understands that although each Contributor grants the licenses
you may at your option offer warranty protection in exchange for a fee. to its Contributions set forth herein, no assurances are provided by any
Contributor that the Program does not infringe the patent or other
intellectual property rights of any other entity. Each Contributor disclaims
any liability to Recipient for claims brought by any other entity based on
infringement of intellectual property rights or otherwise. As a condition to
exercising the rights and licenses granted hereunder, each Recipient hereby
assumes sole responsibility to secure any other intellectual property rights
needed, if any. For example, if a third party patent license is required to
allow Recipient to distribute the Program, it is Recipient's responsibility
to acquire that license before distributing the Program.
2. You may modify your copy or copies of the Program or any portion d) Each Contributor represents that to its knowledge it has sufficient
of it, thus forming a work based on the Program, and copy and copyright rights in its Contribution, if any, to grant the copyright license
distribute such modifications or work under the terms of Section 1 set forth in this Agreement.
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices 3. REQUIREMENTS
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in A Contributor may choose to distribute the Program in object code form under
whole or in part contains or is derived from the Program or any its own license agreement, provided that:
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively a) it complies with the terms and conditions of this Agreement; and
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If b) its license agreement:
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest i) effectively disclaims on behalf of all Contributors all warranties and
your rights to work written entirely by you; rather, the intent is to conditions, express and implied, including warranties or conditions of title
exercise the right to control the distribution of derivative or and non-infringement, and implied warranties or conditions of merchantability
collective works based on the Program. and fitness for a particular purpose;
In addition, mere aggregation of another work not based on the Program ii) effectively excludes on behalf of all Contributors all liability for
with the Program (or with a work based on the Program) on a volume of damages, including direct, indirect, special, incidental and consequential
a storage or distribution medium does not bring the other work under damages, such as lost profits;
the scope of this License.
3. You may copy and distribute the Program (or a work based on it, iii) states that any provisions which differ from this Agreement are offered
under Section 2) in object code or executable form under the terms of by that Contributor alone and not by any other party; and
Sections 1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable iv) states that source code for the Program is available from such
source code, which must be distributed under the terms of Sections Contributor, and informs licensees how to obtain it in a reasonable manner on
1 and 2 above on a medium customarily used for software interchange; or, or through a medium customarily used for software exchange.
b) Accompany it with a written offer, valid for at least three When the Program is made available in source code form:
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer a) it must be made available under this Agreement; and
to distribute corresponding source code. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form with such
an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for b) a copy of this Agreement must be included with each copy of the Program.
making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable. However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
If distribution of executable or object code is made by offering Contributors may not remove or alter any copyright notices contained within
access to copy from a designated place, then offering equivalent the Program.
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program Each Contributor must identify itself as the originator of its Contribution,
except as expressly provided under this License. Any attempt if any, in a manner that reasonably allows subsequent Recipients to identify
otherwise to copy, modify, sublicense or distribute the Program is the originator of the Contribution.
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
5. You are not required to accept this License, since you have not 4. COMMERCIAL DISTRIBUTION
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the Commercial distributors of software may accept certain responsibilities with
Program), the recipient automatically receives a license from the respect to end users, business partners and the like. While this license is
original licensor to copy, distribute or modify the Program subject to intended to facilitate the commercial use of the Program, the Contributor who
these terms and conditions. You may not impose any further includes the Program in a commercial product offering should do so in a
restrictions on the recipients' exercise of the rights granted herein. manner which does not create potential liability for other Contributors.
You are not responsible for enforcing compliance by third parties to Therefore, if a Contributor includes the Program in a commercial product
this License. offering, such Contributor ("Commercial Contributor") hereby agrees to defend
and indemnify every other Contributor ("Indemnified Contributor") against any
losses, damages and costs (collectively "Losses") arising from claims,
lawsuits and other legal actions brought by a third party against the
Indemnified Contributor to the extent caused by the acts or omissions of such
Commercial Contributor in connection with its distribution of the Program in
a commercial product offering. The obligations in this section do not apply
to any claims or Losses relating to any actual or alleged intellectual
property infringement. In order to qualify, an Indemnified Contributor must:
a) promptly notify the Commercial Contributor in writing of such claim, and
b) allow the Commercial Contributor to control, and cooperate with the
Commercial Contributor in, the defense and any related settlement
negotiations. The Indemnified Contributor may participate in any such claim
at its own expense.
7. If, as a consequence of a court judgment or allegation of patent For example, a Contributor might include the Program in a commercial product
infringement or for any other reason (not limited to patent issues), offering, Product X. That Contributor is then a Commercial Contributor. If
conditions are imposed on you (whether by court order, agreement or that Commercial Contributor then makes performance claims, or offers
otherwise) that contradict the conditions of this License, they do not warranties related to Product X, those performance claims and warranties are
excuse you from the conditions of this License. If you cannot such Commercial Contributor's responsibility alone. Under this section, the
distribute so as to satisfy simultaneously your obligations under this Commercial Contributor would have to defend claims against the other
License and any other pertinent obligations, then as a consequence you Contributors related to those performance claims and warranties, and if a
may not distribute the Program at all. For example, if a patent court requires any other Contributor to pay any damages as a result, the
license would not permit royalty-free redistribution of the Program by Commercial Contributor must pay those damages.
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under 5. NO WARRANTY
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.
It is not the purpose of this section to induce you to infringe any EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, THE PROGRAM IS PROVIDED ON
patents or other property right claims or to contest validity of any AN "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER
such claims; this section has the sole purpose of protecting the EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR
integrity of the free software distribution system, which is CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A
implemented by public license practices. Many people have made PARTICULAR PURPOSE. Each Recipient is solely responsible for determining the
generous contributions to the wide range of software distributed appropriateness of using and distributing the Program and assumes all risks
through that system in reliance on consistent application of that associated with its exercise of rights under this Agreement , including but
system; it is up to the author/donor to decide if he or she is willing not limited to the risks and costs of program errors, compliance with
to distribute software through any other system and a licensee cannot applicable laws, damage to or loss of data, programs or equipment, and
impose that choice. unavailability or interruption of operations.
This section is intended to make thoroughly clear what is believed to 6. DISCLAIMER OF LIABILITY
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER RECIPIENT NOR ANY
certain countries either by patents or by copyrighted interfaces, the CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL,
original copyright holder who places the Program under this License SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION
may add an explicit geographical distribution limitation excluding LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
those countries, so that distribution is permitted only in or among CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
countries not thus excluded. In such case, this License incorporates ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE
the limitation as if written in the body of this License. EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES.
9. The Free Software Foundation may publish revised and/or new versions 7. GENERAL
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program If any provision of this Agreement is invalid or unenforceable under
specifies a version number of this License which applies to it and "any applicable law, it shall not affect the validity or enforceability of the
later version", you have the option of following the terms and conditions remainder of the terms of this Agreement, and without further action by the
either of that version or of any later version published by the Free parties hereto, such provision shall be reformed to the minimum extent
Software Foundation. If the Program does not specify a version number of necessary to make such provision valid and enforceable.
this License, you may choose any version ever published by the Free Software
Foundation.
10. If you wish to incorporate parts of the Program into other free If Recipient institutes patent litigation against any entity (including a
programs whose distribution conditions are different, write to the author cross-claim or counterclaim in a lawsuit) alleging that the Program itself
to ask for permission. For software which is copyrighted by the Free (excluding combinations of the Program with other software or hardware)
Software Foundation, write to the Free Software Foundation; we sometimes infringes such Recipient's patent(s), then such Recipient's rights granted
make exceptions for this. Our decision will be guided by the two goals under Section 2(b) shall terminate as of the date such litigation is filed.
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY All Recipient's rights under this Agreement shall terminate if it fails to
comply with any of the material terms or conditions of this Agreement and
does not cure such failure in a reasonable period of time after becoming
aware of such noncompliance. If all Recipient's rights under this Agreement
terminate, Recipient agrees to cease use and distribution of the Program as
soon as reasonably practicable. However, Recipient's obligations under this
Agreement and any licenses granted by Recipient relating to the Program shall
continue and survive.
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY Everyone is permitted to copy and distribute copies of this Agreement, but in
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN order to avoid inconsistency the Agreement is copyrighted and may only be
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES modified in the following manner. The Agreement Steward reserves the right to
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED publish new versions (including revisions) of this Agreement from time to
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF time. No one other than the Agreement Steward has the right to modify this
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS Agreement. The Eclipse Foundation is the initial Agreement Steward. The
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE Eclipse Foundation may assign the responsibility to serve as the Agreement
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, Steward to a suitable separate entity. Each new version of the Agreement will
REPAIR OR CORRECTION. be given a distinguishing version number. The Program (including
Contributions) may always be distributed subject to the version of the
Agreement under which it was received. In addition, after a new version of
the Agreement is published, Contributor may elect to distribute the Program
(including its Contributions) under the new version. Except as expressly
stated in Sections 2(a) and 2(b) above, Recipient receives no rights or
licenses to the intellectual property of any Contributor under this
Agreement, whether expressly, by implication, estoppel or otherwise. All
rights in the Program not expressly granted under this Agreement are
reserved.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING This Agreement is governed by the laws of the State of New York and the
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR intellectual property laws of the United States of America. No party to this
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, Agreement will bring a legal action under this Agreement more than one year
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING after the cause of action arose. Each party waives its rights to a jury trial
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED in any resulting litigation.
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

4
README.md
View file

@ -136,8 +136,8 @@ thousands of user-contributed add-on 'mods', mostly stories and quests,
for Neverwinter Nights, of which I wrote several - and I greatly enjoyed for Neverwinter Nights, of which I wrote several - and I greatly enjoyed
doing so. doing so.
Later on, with Carrol Dufault and others (including Later on, with Carrol Dufault and others (including James Semple who wrote
[wonderful original music by James Semple](https://www.youtube.com/watch?v=1afAIojPZ1w)), I went on to write a [new story for The Witcher](https://www.moddb.com/mods/birth-virgins) which won CD Project's prize for best mod. [wonderful original music](https://www.youtube.com/watch?v=1afAIojPZ1w)), I went on to write a [new story for The Witcher](https://www.moddb.com/mods/birth-virgins) which won CD Project's prize for best mod.
For me, writing story is every bit as compelling an activity as playing it, For me, writing story is every bit as compelling an activity as playing it,
and I know I'm not alone in that. So I feel strongly that if **The Great Game** and I know I'm not alone in that. So I feel strongly that if **The Great Game**

3
doc/intro.md Normal file
View file

@ -0,0 +1,3 @@
# Introduction to the-great-game
TODO: write [great documentation](http://jacobian.org/writing/what-to-write/)

12
project.clj Normal file
View file

@ -0,0 +1,12 @@
(defproject the-great-game "0.1.0-SNAPSHOT"
:codox {:metadata {:doc "**TODO**: write docs"
:doc/format :markdown}
:output-path "docs"
:source-uri "https://github.com/simon-brooke/the-great-game/blob/master/{filepath}#L{line}"}
:dependencies [[org.clojure/clojure "1.8.0"]]
:description "Prototype code towards the great game I've been writing about for ten years, and know I will never finish."
:license {:name "GNU General Public License,version 2.0 or (at your option) any later version"
:url "https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html"}
:plugins [[lein-codox "0.10.3"]]
:url "https://github.com/simon-brooke/the-great-game"
)

6
src/the_great_game/core.clj Normal file
View file

@ -0,0 +1,6 @@
(ns the-great-game.core)
(defn foo
"I don't do a whole lot."
[x]
(println x "Hello, World!"))

156
src/the_great_game/merchants/merchants.clj Normal file
View file

@ -0,0 +1,156 @@
(ns the-great-game.merchants.merchants
"Trade planning for merchants, primarily."
(:require [the-great-game.world.routes :refer [find-routes]]
[the-great-game.world.world :refer [actual-price]]))
(defn expected-price
"Find the price anticipated, given this `world`, by this `merchant` for
this `commodity` in this `city`. If no information, assume 1.
`merchant` should be passed as a map, `commodity` and `city` should be passed as keywords."
[merchant commodity city]
(or
(:price
(last
(sort-by
:date
(-> merchant :known-prices city commodity))))
1))
(defn burden
"The total weight of the current cargo carried by this `merchant` in this
`world`."
[merchant world]
(let [m (cond
(keyword? merchant)
(-> world :merchants merchant)
(map? merchant)
merchant)
cargo (-> m :stock)]
(reduce
+
0
(map
#(* (cargo %) (-> world :commodities % :weight))
(keys cargo)))))
(defn find-trade-plan
"Find the best destination in this `world` for this `commodity` given this
`merchant` and this `origin`. If two cities are anticipated to offer the
same price, the nearer should be preferred; if two are equally distant, the
ones nearer to the merchant's home should be preferred.
`merchant` may be passed as a map or a keyword; `commodity` should be
passed as a keyword.
The returned plan is a map with keys:
# :merchant - the id of the `merchant` for whom the plan was created;
# :origin - the city from which the trade starts;
# :destination - the city to which the trade is planned;
# :commodity - the `commodity` to be carried;
# :buy-price - the price at which that `commodity` can be bought;
# :expected-price - the price at which the `merchant` anticipates
that `commodity` can be sold;
# :distance - the number of stages in the planned journey
# :dist-to-home - the distance from `destination` to the `merchant`'s
home city."
[merchant world commodity]
(let [m (cond
(keyword? merchant)
(-> world :merchants merchant)
(map? merchant)
merchant)
origin (-> m :location)
destinations (remove #(= % origin) (keys (-> world :cities)))
plans (map
#(hash-map
:merchant (-> m :id)
:origin origin
:destination %
:commodity commodity
:buy-price (actual-price world commodity origin)
:expected-price (expected-price
merchant
commodity
%)
:distance (count
(first
(find-routes (:routes world) origin %)))
:dist-to-home (count
(first
(find-routes
(:routes world)
(-> world :merchants merchant :home)
%)))
)
destinations)
best-price (apply min (filter number? (map :expected-price plans)))
nearest (apply min (map :distance plans))]
(first
(sort
#(compare (:dist-to-home %1) (:dist-to-home %2))
(filter
#(and
(= (:expected-price %) best-price)
(= (:distance %) nearest))
plans)))))
(defn augment-plan
"Augment this `plan` constructed in this `world` for this `merchant` with
the `:quantity` of goods which should be bought and the `:expected-profit`
of the trade.
Returns the augmented plan."
[merchant world plan]
(let [m (cond
(keyword? merchant)
(-> world :merchants merchant)
(map? merchant)
merchant)
available (-> world :cities (:origin plan) :stock (:commodity plan))
can-carry (quot
(- (-> m :capacity) (burden m world))
(-> world :commodities (:commodity plan) :weight))
can-afford (quot
(-> merchant :cash)
(-> world :commodities (:commodity plan) :weight))
q (min available can-carry can-afford)
p (* q (- (:expected-price plan) (:buy-price plan)))]
(assoc plan :quantity q :expected-profit p)))
(defn select-cargo
"A `merchant`, in a given location in a `world`, will choose to buy a cargo
within the limit they are capable of carrying, which they can anticipate
selling for a profit at a destination."
[merchant world]
(let [m (cond
(keyword? merchant)
(-> world :merchants merchant)
(map? merchant)
merchant)
origin (-> m :location)
available (-> world :cities origin :stock)
plans (map
#(augment-plan
m
world
(find-trade-plan m world %))
(filter
#(let [q (-> world :cities origin :stock %)]
(and (number? q) (> q 0)))
(keys available)))
best-profit (apply min (filter number? (map :expected-profit plans)))
nearest (apply min (map :distance plans))]
(first
(sort
#(compare (:dist-to-home %1) (:dist-to-home %2))
(filter
#(and
(= (:expected-profit %) best-profit)
(= (:distance %) nearest))
plans))) ))

0
src/the_great_game/merchants/strategy.clj Normal file
View file

17
src/the_great_game/utils.clj Normal file
View file

@ -0,0 +1,17 @@
(ns the-great-game.utils)
(defn cyclic?
"True if two or more elements of `route` are identical"
[route]
(not (= (count route)(count (set route)))))
(defn deep-merge
"Recursively merges maps. Stolen from
https://dnaeon.github.io/recursively-merging-maps-in-clojure/"
[& maps]
(letfn [(m [& xs]
(if (some #(and (map? %) (not (record? %))) xs)
(apply merge-with m xs)
(last xs)))]
(reduce m maps)))

46
src/the_great_game/world/routes.clj Normal file
View file

@ -0,0 +1,46 @@
(ns the-great-game.world.routes
"Conceptual (plan level) routes, represented as tuples of location ids."
(:require [the-great-game.utils :refer [cyclic?]]))
(defn find-routes
"Find routes from among these `routes` from `from`; if `to` is supplied,
to `to`, by breadth-first search."
([routes from]
(map
(fn [to] (cons from to))
(remove
#(empty? %)
(map
(fn [route]
(filter
#(not (= from %))
(if (some #(= % from) route) route)))
routes))))
([routes from to]
(let [steps (find-routes routes from)
found (filter
(fn [step] (if (some #(= to %) step) step))
steps)]
(if
(empty? found)
(find-routes routes from to steps)
found)))
([routes from to steps]
(if
(not (empty? steps))
(let [paths (remove
cyclic?
(apply
concat
(map
(fn [path]
(map
(fn [x] (concat path (rest x)))
(find-routes routes (last path))))
steps)))
found (filter
#(= (last %) to) paths)]
(if
(empty? found)
(find-routes routes from to paths)
found)))))

184
src/the_great_game/world/world.clj Normal file
View file

@ -0,0 +1,184 @@
(ns the-great-game.world.world
"Access to data about the world")
;;; The world has to work either as map or a database. Initially, and for
;;; unit tests, I'll use a map; later, there will be a database. But the
;;; API needs to be agnostic, so that heirarchies which interact with
;;; `world` don't have to know which they've got - as far as they're concerned
;;; it's just a handle.
(def default-world
"A basic world for testing concepts"
{:cities
{:aberdeen
{:id :aberdeen
:supplies
;; `supplies` is the quantity of each commodity added to the stock
;; each game day. If the price in the market is lower than 1 (the
;; cost of production of a unit) no goods will be added.
{:fish 10
:leather 5}
:demands
;; `stock` is the quantity of each commodity in the market at any
;; given time. It is adjusted for production and consumption at
;; the end of each game day.
{:iron 1
:cloth 10
:tobacco 10}
:port true
:prices
;; `prices`: the current price (both buying and selling, for simplicity)
;; of each commodity in the market. Updated each game day based on current
;; stock.
{:cloth 1
:fish 1
:leather 1
:iron 1
:tobacco 1}
:stock
;; `stock` is the quantity of each commodity in the market at any
;; given time. It is adjusted for production and consumption at
;; the end of each game day.
{:cloth 0
:fish 0
:leather 0
:iron 0
:tobacco 0}
:cash 100}
:buckie
{:id :buckie
:supplies
{:fish 20}
:demands
{:cloth 5
:leather 3
:tobacco 5
:iron 1}
:port true
:prices {:cloth 1
:fish 1
:leather 1
:iron 1
:tobacco 1}
:stock {:cloth 0
:fish 0
:leather 0
:iron 0
:tobacco 0}
:cash 100}
:callander
{:id :callander
:supplies {:leather 20}
:demands
{:cloth 5
:fish 3
:tobacco 5
:iron 1}
:prices {:cloth 1
:fish 1
:leather 1
:iron 1
:tobacco 1}
:stock {:cloth 0
:fish 0
:leather 0
:iron 0
:tobacco 0}
:cash 100}
:dundee {:id :dundee}
:edinburgh {:id :dundee}
:falkirk
{:id :falkirk
:supplies {:iron 10}
:demands
{:cloth 5
:leather 3
:tobacco 5
:fish 10}
:port true
:prices {:cloth 1
:fish 1
:leather 1
:iron 1
:tobacco 1}
:stock {:cloth 0
:fish 0
:leather 0
:iron 0
:tobacco 0}
:cash 100}
:glasgow
{:id :glasgow
:supplies {:tobacco 10}
:demands
{:cloth 5
:leather 3
:iron 5
:fish 10}
:port true
:prices {:cloth 1
:fish 1
:leather 1
:iron 1
:tobacco 1}
:stock {:cloth 0
:fish 0
:leather 0
:iron 0
:tobacco 0}
:cash 100}}
:merchants
{:archie {:id :archie
:home :aberdeen :location :aberdeen :cash 100 :capacity 10
:known-prices {}
:stock {}}
:belinda {:id :belinda
:home :buckie :location :buckie :cash 100 :capacity 10
:known-prices {}
:stock {}}
:callum {:id :callum
:home :callander :location :calander :cash 100 :capacity 10
:known-prices {}
:stock {}}
:deirdre {:id :deidre
:home :dundee :location :dundee :cash 100 :capacity 10
:known-prices {}
:stock {}}
:euan {:id :euan
:home :edinbirgh :location :edinburgh :cash 100 :capacity 10
:known-prices {}
:stock {}}
:fiona {:id :fiona
:home :falkirk :location :falkirk :cash 100 :capacity 10
:known-prices {}
:stock {}}}
:routes
;; all routes can be traversed in either direction and are assumed to
;; take the same amount of time.
[[:aberdeen :buckie]
[:aberdeen :dundee]
[:callander :glasgow]
[:dundee :callander]
[:dundee :edinburgh]
[:dundee :falkirk]
[:edinburgh :falkirk]
[:falkirk :glasgow]]
:commodities
;; cost of commodities is expressed in person/days;
;; weight in packhorse loads. Transport in this model
;; is all overland; you don't take bulk cargoes overland
;; in this period, it's too expensive.
{:cloth {:id :cloth :cost 1 :weight 0.25}
:fish {:id :fish :cost 1 :weight 1}
:leather {:id :leather :cost 1 :weight 0.5}
:tobacco {:id :tobacco :cost 1 :weight 0.1}
:iron {:id :iron :cost 1 :weight 10}}})
(defn actual-price
"Find the actual current price of this `commodity` in this `city` given
this `world`. **NOTE** that merchants can only know the actual prices in
the city in which they are currently located."
[world commodity city]
(-> world :cities city :prices commodity))

23
test/the_great_game/merchants/merchants_test.clj Normal file
View file

@ -0,0 +1,23 @@
(ns the-great-game.merchants.merchants-test
(:require [clojure.test :refer :all]
[the-great-game.utils :refer [deep-merge]]
[the-great-game.world.world :refer [default-world]]
[the-great-game.merchants.merchants :refer :all]))
(deftest expected-price-test
(testing "Anticipated prices in markets"
(let [world (deep-merge
default-world
{:merchants
{:archie
{:known-prices
{:buckie
{:iron
[{:price 1.7 :date 1}
{:price 2 :date 0}]}}}}})]
(let [actual (expected-price (-> world :merchants :archie) :fish :edinburgh)
expected 1] ;;
(is (= actual expected) "if no information assume 1"))
(let [actual (expected-price (-> world :merchants :archie) :iron :buckie)
expected 1.7] ;;
(is (= actual expected) "if information select the most recent")))))

12
test/the_great_game/utils_test.clj Normal file
View file

@ -0,0 +1,12 @@
(ns the-great-game.utils-test
(:require [clojure.test :refer :all]
[the-great-game.utils :refer :all]))
(deftest cyclic-tests
(testing "Detecting cyclic routes"
(let [actual (cyclic? '(:glasgow :edinburgh :glasgow))
expected true]
(is (= actual expected)))
(let [actual (cyclic? '(:edinburgh :dundee :aberdeen :buckie))
expected false]
(is (= actual expected)))))

33
test/the_great_game/world/routes_test.clj Normal file
View file

@ -0,0 +1,33 @@
(ns the-great-game.world.routes-test
(:require [clojure.test :refer :all]
[the-great-game.world.routes :refer :all]
[the-great-game.world.world :refer [default-world]]))
(deftest routing-test
(testing "Routing: possible route"
(let [origin :buckie
destination :glasgow
routes (find-routes (:routes default-world) origin destination)]
(is
(= (first (first routes)) origin)
"Routes should be from the specified origin")
(is
(= (last (first routes)) destination)
"Routes should be from the specified destination")
(is
(= (count (set (map first routes))) 1)
"All routes should have the same origin")
(is
(= (count (set (map last routes))) 1)
"All routes should have the same destination")
(is
(= (count (set (map count routes))) 1)
"All selected routes should have the same length")
))
(testing "Impossible route"
(let [origin :buckie
destination :london ;; not present in the routing map
actual (find-routes (:routes default-world) origin destination)]
(is (nil? actual) "There should be no route returned."))))

4
test/the_great_game/world/world_test.clj Normal file
View file

@ -0,0 +1,4 @@
(ns the-great-game.world.world-test
(:require [clojure.test :refer :all]
[the-great-game.world.world :refer :all]))