first commit

.github/workflows/luacheck.yml

@@ -0,0 +1,11 @@
+on: [push, pull_request]
+name: luacheck
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: lint
+        uses: Roang-zero1/factorio-mod-luacheck@master
+        with:
+          luacheckrc_url: ""

.luacheckrc

@@ -0,0 +1,21 @@
+unused = false
+
+globals = {
+	"currency", "barter",
+	"default"
+}
+
+read_globals = {
+	-- Lua
+	string = {fields = {"split", "trim"}},
+	table = {fields = {"copy", "getn"}},
+
+	-- Minetest
+	"minetest",
+	"PseudoRandom", "ItemStack",
+	"VoxelArea", "VoxelManip",
+	"Settings", "vector",
+
+	-- Mods
+	"loot", "pipeworks"
+}

LICENSE

@@ -0,0 +1,600 @@
+License for code: LGPL 3.0
+License for media and all other assets:  CC-by-SA 4.0
+
+###############################################################################
+
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
+       system, and (b) will operate properly with a modified version
+       of the Library that is interface-compatible with the Linked
+       Version.
+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser 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
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.
+
+###############################################################################
+
+Attribution-ShareAlike 4.0 International
+
+=======================================================================
+
+Creative Commons Corporation ("Creative Commons") is not a law firm and
+does not provide legal services or legal advice. Distribution of
+Creative Commons public licenses does not create a lawyer-client or
+other relationship. Creative Commons makes its licenses and related
+information available on an "as-is" basis. Creative Commons gives no
+warranties regarding its licenses, any material licensed under their
+terms and conditions, or any related information. Creative Commons
+disclaims all liability for damages resulting from their use to the
+fullest extent possible.
+
+Using Creative Commons Public Licenses
+
+Creative Commons public licenses provide a standard set of terms and
+conditions that creators and other rights holders may use to share
+original works of authorship and other material subject to copyright
+and certain other rights specified in the public license below. The
+following considerations are for informational purposes only, are not
+exhaustive, and do not form part of our licenses.
+
+     Considerations for licensors: Our public licenses are
+     intended for use by those authorized to give the public
+     permission to use material in ways otherwise restricted by
+     copyright and certain other rights. Our licenses are
+     irrevocable. Licensors should read and understand the terms
+     and conditions of the license they choose before applying it.
+     Licensors should also secure all rights necessary before
+     applying our licenses so that the public can reuse the
+     material as expected. Licensors should clearly mark any
+     material not subject to the license. This includes other CC-
+     licensed material, or material used under an exception or
+     limitation to copyright. More considerations for licensors:
+	wiki.creativecommons.org/Considerations_for_licensors
+
+     Considerations for the public: By using one of our public
+     licenses, a licensor grants the public permission to use the
+     licensed material under specified terms and conditions. If
+     the licensor's permission is not necessary for any reason--for
+     example, because of any applicable exception or limitation to
+     copyright--then that use is not regulated by the license. Our
+     licenses grant only permissions under copyright and certain
+     other rights that a licensor has authority to grant. Use of
+     the licensed material may still be restricted for other
+     reasons, including because others have copyright or other
+     rights in the material. A licensor may make special requests,
+     such as asking that all changes be marked or described.
+     Although not required by our licenses, you are encouraged to
+     respect those requests where reasonable. More considerations
+     for the public: 
+	wiki.creativecommons.org/Considerations_for_licensees
+
+=======================================================================
+
+Creative Commons Attribution-ShareAlike 4.0 International Public
+License
+
+By exercising the Licensed Rights (defined below), You accept and agree
+to be bound by the terms and conditions of this Creative Commons
+Attribution-ShareAlike 4.0 International Public License ("Public
+License"). To the extent this Public License may be interpreted as a
+contract, You are granted the Licensed Rights in consideration of Your
+acceptance of these terms and conditions, and the Licensor grants You
+such rights in consideration of benefits the Licensor receives from
+making the Licensed Material available under these terms and
+conditions.
+
+
+Section 1 -- Definitions.
+
+  a. Adapted Material means material subject to Copyright and Similar
+     Rights that is derived from or based upon the Licensed Material
+     and in which the Licensed Material is translated, altered,
+     arranged, transformed, or otherwise modified in a manner requiring
+     permission under the Copyright and Similar Rights held by the
+     Licensor. For purposes of this Public License, where the Licensed
+     Material is a musical work, performance, or sound recording,
+     Adapted Material is always produced where the Licensed Material is
+     synched in timed relation with a moving image.
+
+  b. Adapter's License means the license You apply to Your Copyright
+     and Similar Rights in Your contributions to Adapted Material in
+     accordance with the terms and conditions of this Public License.
+
+  c. BY-SA Compatible License means a license listed at
+     creativecommons.org/compatiblelicenses, approved by Creative
+     Commons as essentially the equivalent of this Public License.
+
+  d. Copyright and Similar Rights means copyright and/or similar rights
+     closely related to copyright including, without limitation,
+     performance, broadcast, sound recording, and Sui Generis Database
+     Rights, without regard to how the rights are labeled or
+     categorized. For purposes of this Public License, the rights
+     specified in Section 2(b)(1)-(2) are not Copyright and Similar
+     Rights.
+
+  e. Effective Technological Measures means those measures that, in the
+     absence of proper authority, may not be circumvented under laws
+     fulfilling obligations under Article 11 of the WIPO Copyright
+     Treaty adopted on December 20, 1996, and/or similar international
+     agreements.
+
+  f. Exceptions and Limitations means fair use, fair dealing, and/or
+     any other exception or limitation to Copyright and Similar Rights
+     that applies to Your use of the Licensed Material.
+
+  g. License Elements means the license attributes listed in the name
+     of a Creative Commons Public License. The License Elements of this
+     Public License are Attribution and ShareAlike.
+
+  h. Licensed Material means the artistic or literary work, database,
+     or other material to which the Licensor applied this Public
+     License.
+
+  i. Licensed Rights means the rights granted to You subject to the
+     terms and conditions of this Public License, which are limited to
+     all Copyright and Similar Rights that apply to Your use of the
+     Licensed Material and that the Licensor has authority to license.
+
+  j. Licensor means the individual(s) or entity(ies) granting rights
+     under this Public License.
+
+  k. Share means to provide material to the public by any means or
+     process that requires permission under the Licensed Rights, such
+     as reproduction, public display, public performance, distribution,
+     dissemination, communication, or importation, and to make material
+     available to the public including in ways that members of the
+     public may access the material from a place and at a time
+     individually chosen by them.
+
+  l. Sui Generis Database Rights means rights other than copyright
+     resulting from Directive 96/9/EC of the European Parliament and of
+     the Council of 11 March 1996 on the legal protection of databases,
+     as amended and/or succeeded, as well as other essentially
+     equivalent rights anywhere in the world.
+
+  m. You means the individual or entity exercising the Licensed Rights
+     under this Public License. Your has a corresponding meaning.
+
+
+Section 2 -- Scope.
+
+  a. License grant.
+
+       1. Subject to the terms and conditions of this Public License,
+          the Licensor hereby grants You a worldwide, royalty-free,
+          non-sublicensable, non-exclusive, irrevocable license to
+          exercise the Licensed Rights in the Licensed Material to:
+
+            a. reproduce and Share the Licensed Material, in whole or
+               in part; and
+
+            b. produce, reproduce, and Share Adapted Material.
+
+       2. Exceptions and Limitations. For the avoidance of doubt, where
+          Exceptions and Limitations apply to Your use, this Public
+          License does not apply, and You do not need to comply with
+          its terms and conditions.
+
+       3. Term. The term of this Public License is specified in Section
+          6(a).
+
+       4. Media and formats; technical modifications allowed. The
+          Licensor authorizes You to exercise the Licensed Rights in
+          all media and formats whether now known or hereafter created,
+          and to make technical modifications necessary to do so. The
+          Licensor waives and/or agrees not to assert any right or
+          authority to forbid You from making technical modifications
+          necessary to exercise the Licensed Rights, including
+          technical modifications necessary to circumvent Effective
+          Technological Measures. For purposes of this Public License,
+          simply making modifications authorized by this Section 2(a)
+          (4) never produces Adapted Material.
+
+       5. Downstream recipients.
+
+            a. Offer from the Licensor -- Licensed Material. Every
+               recipient of the Licensed Material automatically
+               receives an offer from the Licensor to exercise the
+               Licensed Rights under the terms and conditions of this
+               Public License.
+
+            b. Additional offer from the Licensor -- Adapted Material.
+               Every recipient of Adapted Material from You
+               automatically receives an offer from the Licensor to
+               exercise the Licensed Rights in the Adapted Material
+               under the conditions of the Adapter's License You apply.
+
+            c. No downstream restrictions. You may not offer or impose
+               any additional or different terms or conditions on, or
+               apply any Effective Technological Measures to, the
+               Licensed Material if doing so restricts exercise of the
+               Licensed Rights by any recipient of the Licensed
+               Material.
+
+       6. No endorsement. Nothing in this Public License constitutes or
+          may be construed as permission to assert or imply that You
+          are, or that Your use of the Licensed Material is, connected
+          with, or sponsored, endorsed, or granted official status by,
+          the Licensor or others designated to receive attribution as
+          provided in Section 3(a)(1)(A)(i).
+
+  b. Other rights.
+
+       1. Moral rights, such as the right of integrity, are not
+          licensed under this Public License, nor are publicity,
+          privacy, and/or other similar personality rights; however, to
+          the extent possible, the Licensor waives and/or agrees not to
+          assert any such rights held by the Licensor to the limited
+          extent necessary to allow You to exercise the Licensed
+          Rights, but not otherwise.
+
+       2. Patent and trademark rights are not licensed under this
+          Public License.
+
+       3. To the extent possible, the Licensor waives any right to
+          collect royalties from You for the exercise of the Licensed
+          Rights, whether directly or through a collecting society
+          under any voluntary or waivable statutory or compulsory
+          licensing scheme. In all other cases the Licensor expressly
+          reserves any right to collect such royalties.
+
+
+Section 3 -- License Conditions.
+
+Your exercise of the Licensed Rights is expressly made subject to the
+following conditions.
+
+  a. Attribution.
+
+       1. If You Share the Licensed Material (including in modified
+          form), You must:
+
+            a. retain the following if it is supplied by the Licensor
+               with the Licensed Material:
+
+                 i. identification of the creator(s) of the Licensed
+                    Material and any others designated to receive
+                    attribution, in any reasonable manner requested by
+                    the Licensor (including by pseudonym if
+                    designated);
+
+                ii. a copyright notice;
+
+               iii. a notice that refers to this Public License;
+
+                iv. a notice that refers to the disclaimer of
+                    warranties;
+
+                 v. a URI or hyperlink to the Licensed Material to the
+                    extent reasonably practicable;
+
+            b. indicate if You modified the Licensed Material and
+               retain an indication of any previous modifications; and
+
+            c. indicate the Licensed Material is licensed under this
+               Public License, and include the text of, or the URI or
+               hyperlink to, this Public License.
+
+       2. You may satisfy the conditions in Section 3(a)(1) in any
+          reasonable manner based on the medium, means, and context in
+          which You Share the Licensed Material. For example, it may be
+          reasonable to satisfy the conditions by providing a URI or
+          hyperlink to a resource that includes the required
+          information.
+
+       3. If requested by the Licensor, You must remove any of the
+          information required by Section 3(a)(1)(A) to the extent
+          reasonably practicable.
+
+  b. ShareAlike.
+
+     In addition to the conditions in Section 3(a), if You Share
+     Adapted Material You produce, the following conditions also apply.
+
+       1. The Adapter's License You apply must be a Creative Commons
+          license with the same License Elements, this version or
+          later, or a BY-SA Compatible License.
+
+       2. You must include the text of, or the URI or hyperlink to, the
+          Adapter's License You apply. You may satisfy this condition
+          in any reasonable manner based on the medium, means, and
+          context in which You Share Adapted Material.
+
+       3. You may not offer or impose any additional or different terms
+          or conditions on, or apply any Effective Technological
+          Measures to, Adapted Material that restrict exercise of the
+          rights granted under the Adapter's License You apply.
+
+
+Section 4 -- Sui Generis Database Rights.
+
+Where the Licensed Rights include Sui Generis Database Rights that
+apply to Your use of the Licensed Material:
+
+  a. for the avoidance of doubt, Section 2(a)(1) grants You the right
+     to extract, reuse, reproduce, and Share all or a substantial
+     portion of the contents of the database;
+
+  b. if You include all or a substantial portion of the database
+     contents in a database in which You have Sui Generis Database
+     Rights, then the database in which You have Sui Generis Database
+     Rights (but not its individual contents) is Adapted Material,
+
+     including for purposes of Section 3(b); and
+  c. You must comply with the conditions in Section 3(a) if You Share
+     all or a substantial portion of the contents of the database.
+
+For the avoidance of doubt, this Section 4 supplements and does not
+replace Your obligations under this Public License where the Licensed
+Rights include other Copyright and Similar Rights.
+
+
+Section 5 -- Disclaimer of Warranties and Limitation of Liability.
+
+  a. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE
+     EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS
+     AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF
+     ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS,
+     IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION,
+     WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR
+     PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS,
+     ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT
+     KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT
+     ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.
+
+  b. TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE
+     TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION,
+     NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT,
+     INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES,
+     COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR
+     USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN
+     ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR
+     DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR
+     IN PART, THIS LIMITATION MAY NOT APPLY TO YOU.
+
+  c. The disclaimer of warranties and limitation of liability provided
+     above shall be interpreted in a manner that, to the extent
+     possible, most closely approximates an absolute disclaimer and
+     waiver of all liability.
+
+
+Section 6 -- Term and Termination.
+
+  a. This Public License applies for the term of the Copyright and
+     Similar Rights licensed here. However, if You fail to comply with
+     this Public License, then Your rights under this Public License
+     terminate automatically.
+
+  b. Where Your right to use the Licensed Material has terminated under
+     Section 6(a), it reinstates:
+
+       1. automatically as of the date the violation is cured, provided
+          it is cured within 30 days of Your discovery of the
+          violation; or
+
+       2. upon express reinstatement by the Licensor.
+
+     For the avoidance of doubt, this Section 6(b) does not affect any
+     right the Licensor may have to seek remedies for Your violations
+     of this Public License.
+
+  c. For the avoidance of doubt, the Licensor may also offer the
+     Licensed Material under separate terms or conditions or stop
+     distributing the Licensed Material at any time; however, doing so
+     will not terminate this Public License.
+
+  d. Sections 1, 5, 6, 7, and 8 survive termination of this Public
+     License.
+
+
+Section 7 -- Other Terms and Conditions.
+
+  a. The Licensor shall not be bound by any additional or different
+     terms or conditions communicated by You unless expressly agreed.
+
+  b. Any arrangements, understandings, or agreements regarding the
+     Licensed Material not stated herein are separate from and
+     independent of the terms and conditions of this Public License.
+
+
+Section 8 -- Interpretation.
+
+  a. For the avoidance of doubt, this Public License does not, and
+     shall not be interpreted to, reduce, limit, restrict, or impose
+     conditions on any use of the Licensed Material that could lawfully
+     be made without permission under this Public License.
+
+  b. To the extent possible, if any provision of this Public License is
+     deemed unenforceable, it shall be automatically reformed to the
+     minimum extent necessary to make it enforceable. If the provision
+     cannot be reformed, it shall be severed from this Public License
+     without affecting the enforceability of the remaining terms and
+     conditions.
+
+  c. No term or condition of this Public License will be waived and no
+     failure to comply consented to unless expressly agreed to by the
+     Licensor.
+
+  d. Nothing in this Public License constitutes or may be interpreted
+     as a limitation upon, or waiver of, any privileges and immunities
+     that apply to the Licensor or You, including from the legal
+     processes of any jurisdiction or authority.
+
+
+=======================================================================
+
+Creative Commons is not a party to its public
+licenses. Notwithstanding, Creative Commons may elect to apply one of
+its public licenses to material it publishes and in those instances
+will be considered the “Licensor.” The text of the Creative Commons
+public licenses is dedicated to the public domain under the CC0 Public
+Domain Dedication. Except for the limited purpose of indicating that
+material is shared under a Creative Commons public license or as
+otherwise permitted by the Creative Commons policies published at
+creativecommons.org/policies, Creative Commons does not authorize the
+use of the trademark "Creative Commons" or any other trademark or logo
+of Creative Commons without its prior written consent including,
+without limitation, in connection with any unauthorized modifications
+to any of its public licenses or any other arrangements,
+understandings, or agreements concerning use of licensed material. For
+the avoidance of doubt, this paragraph does not form part of the
+public licenses.
+
+Creative Commons may be contacted at creativecommons.org.

Money_Info.txt

@@ -0,0 +1,36 @@
+Minegeld
+---------
+
+They have no recipe.
+
+In general, one Mg equals one US dollar, as of Sept. 2018.
+
+A good starting amount is about 250 Mg on a server
+
+You currently get a basic income of 10 Minegeld per day, so long as you dig at
+least one node in that day and have an empty inventory slot for the money to
+go in.
+
+Lump Conversion suggestions:
+
+Coal Lump          1 Mg
+Iron Lump          4 Mg
+Copper Lump        4 Mg
+Gold Lump          5 Mg
+Mese Crystal      40 Mg
+Diamond           50 Mg
+
+Ingot Conversion
+
+Steel Ingot        5 Mg
+Copper Ingot       5 Mg
+Gold Ingot         6 Mg
+
+Block Conversion
+
+Coal Block         9 Mg
+Steel Block       45 Mg
+Copper Block      45 Mg
+Gold Block        54 Mg
+Mese Block       360 Mg
+Diamond Block    450 Mg

README.md

@@ -0,0 +1,12 @@
+currency
+========
+
+Repo for Currency Mod
+
+# Settings
+
+Settings with default values:
+```
+# After how much idle-time barter table is reset (seconds)
+barter.chest.expireafter				15 * 60
+```

barter.lua

@@ -0,0 +1,212 @@
+currency.barter = {}
+barter = currency.barter -- Kept as a global variable for compatibility
+
+local S = minetest.get_translator("currency")
+
+barter.chest = {}
+barter.chest.expire_after = tonumber(minetest.settings:get('barter.chest.expireafter')) or 15 * 60
+barter.chest.formspec = {
+	main = "size[8,9]"..
+		"list[current_name;pl1;0,0;3,4;]"..
+		"list[current_name;pl2;5,0;3,4;]"..
+		"list[current_player;main;0,5;8,4;]",
+	pl1 = {
+		start = "button[0,4;3,1;pl1_start;" .. S("Start") .. "]",
+		player = function(name) return "label[0,4;"..name.."]" end,
+		accept1 = "button[2.9,1;1.2,1;pl1_accept1;" .. S("Confirm") .. "]"..
+				"button[2.9,2;1.2,1;pl1_cancel;" .. S("Cancel") .. "]",
+		accept2 = "button[2.9,1;1.2,1;pl1_accept2;" .. S("Exchange") .. "]"..
+				"button[2.9,2;1.2,1;pl1_cancel;" .. S("Cancel") .. "]",
+	},
+	pl2 = {
+		start = "button[5,4;3,1;pl2_start;" .. S("Start") .. "]",
+		player = function(name) return "label[5,4;"..name.."]" end,
+		accept1 = "button[3.9,1;1.2,1;pl2_accept1;" .. S("Confirm") .. "]"..
+				"button[3.9,2;1.2,1;pl2_cancel;" .. S("Cancel") .. "]",
+		accept2 = "button[3.9,1;1.2,1;pl2_accept2;" .. S("Exchange") .. "]"..
+				"button[3.9,2;1.2,1;pl2_cancel;" .. S("Cancel") .. "]",
+	},
+}
+
+barter.chest.check_privilege = function(listname,playername,meta)
+	if listname == "pl1" then
+		if playername ~= meta:get_string("pl1") then
+			return false
+		elseif meta:get_int("pl1step") ~= 1 then
+			return false
+		end
+	end
+	if listname == "pl2" then
+		if playername ~= meta:get_string("pl2") then
+			return false
+		elseif meta:get_int("pl2step") ~= 1 then
+			return false
+		end
+	end
+	return true
+end
+
+barter.chest.update_formspec = function(meta)
+	local formspec = barter.chest.formspec.main
+	local pl_formspec = function (n)
+		if meta:get_int(n.."step")==0 then
+			formspec = formspec .. barter.chest.formspec[n].start
+		else
+			formspec = formspec .. barter.chest.formspec[n].player(meta:get_string(n))
+			if meta:get_int(n.."step") == 1 then
+				formspec = formspec .. barter.chest.formspec[n].accept1
+			elseif meta:get_int(n.."step") == 2 then
+				formspec = formspec .. barter.chest.formspec[n].accept2
+			end
+		end
+	end
+	pl_formspec("pl1") pl_formspec("pl2")
+	meta:set_string("formspec",formspec)
+end
+
+barter.chest.give_inventory = function(inv,list,playername)
+	local player = minetest.get_player_by_name(playername)
+	if player then
+		for _,v in ipairs(inv:get_list(list)) do
+			if player:get_inventory():room_for_item("main",v) then
+				player:get_inventory():add_item("main",v)
+			else
+				minetest.add_item(player:get_pos(),v)
+			end
+			inv:remove_item(list,v)
+		end
+	end
+end
+
+barter.chest.cancel = function(meta)
+	barter.chest.give_inventory(meta:get_inventory(),"pl1",meta:get_string("pl1"))
+	barter.chest.give_inventory(meta:get_inventory(),"pl2",meta:get_string("pl2"))
+	meta:set_string("pl1","")
+	meta:set_string("pl2","")
+	meta:set_int("pl1step",0)
+	meta:set_int("pl2step",0)
+	meta:set_int("clean",1)
+	meta:set_int("timer",0)
+end
+
+barter.chest.exchange = function(meta)
+	barter.chest.give_inventory(meta:get_inventory(),"pl1",meta:get_string("pl2"))
+	barter.chest.give_inventory(meta:get_inventory(),"pl2",meta:get_string("pl1"))
+	meta:set_string("pl1","")
+	meta:set_string("pl2","")
+	meta:set_int("pl1step",0)
+	meta:set_int("pl2step",0)
+	meta:set_int("clean",1)
+	meta:set_int("timer",0)
+end
+
+barter.chest.start_timer = function(pos, meta)
+	meta:set_int("clean",0)
+	meta:set_int("timer",0)
+	local node_timer = minetest.get_node_timer(pos)
+	if node_timer:is_started() then return end
+	node_timer:start(22)
+end
+
+minetest.register_node("currency:barter", {
+	drawtype = "nodebox",
+	description = S("Barter Table"),
+	paramtype = "light",
+	paramtype2 = "facedir",
+	tiles = {
+		"barter_top.png",
+		"barter_base.png",
+		"barter_side.png"
+	},
+	inventory_image = "barter_top.png",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-0.500000,0.312500,-0.500000,0.500000,0.500000,0.500000},
+			{-0.437500,-0.500000,-0.437500,-0.250000,0.500000,-0.250000},
+			{-0.437500,-0.500000,0.250000,-0.250000,0.500000,0.437500},
+			{0.250000,-0.500000,-0.437500,0.437500,0.500000,-0.250000},
+			{0.250000,-0.500000,0.250000,0.437500,0.500000,0.447500},
+		},
+	},
+	groups = {choppy=2,oddly_breakable_by_hand=2},
+	is_ground_content = false,
+	sounds = currency.node_sound_wood_defaults(),
+	on_construct = function(pos)
+		local meta = minetest.get_meta(pos)
+		meta:set_string("infotext", S("Barter Table"))
+		meta:set_string("pl1","")
+		meta:set_string("pl2","")
+		meta:set_int("clean",1)
+		meta:set_int("timer",0)
+		barter.chest.update_formspec(meta)
+		local inv = meta:get_inventory()
+		inv:set_size("pl1", 12) -- 3*4
+		inv:set_size("pl2", 12) -- 3*4
+	end,
+	on_receive_fields = function(pos, formname, fields, sender)
+		local meta = minetest.get_meta(pos)
+		barter.chest.start_timer(pos, meta)
+		local pl_receive_fields = function(n)
+			if fields[n.."_start"] and meta:get_string(n) == "" then
+				meta:set_string(n,sender:get_player_name())
+			end
+			if meta:get_string(n) == "" then
+				meta:set_int(n.."step",0)
+			elseif meta:get_int(n.."step")==0 then
+				meta:set_int(n.."step",1)
+			end
+			if sender:get_player_name() == meta:get_string(n) then
+				if meta:get_int(n.."step")==1 and fields[n.."_accept1"] then
+					meta:set_int(n.."step",2)
+				end
+				if meta:get_int(n.."step")==2 and fields[n.."_accept2"] then
+					meta:set_int(n.."step",3)
+					if n == "pl1" and meta:get_int("pl2step") == 3 then barter.chest.exchange(meta) end
+					if n == "pl2" and meta:get_int("pl1step") == 3 then barter.chest.exchange(meta) end
+				end
+				if fields[n.."_cancel"] then barter.chest.cancel(meta) end
+			end
+		end
+		pl_receive_fields("pl1") pl_receive_fields("pl2")
+		-- End
+		barter.chest.update_formspec(meta)
+	end,
+	allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
+		local meta = minetest.get_meta(pos)
+		barter.chest.start_timer(pos, meta)
+		if not barter.chest.check_privilege(from_list,player:get_player_name(),meta) then return 0 end
+		if not barter.chest.check_privilege(to_list,player:get_player_name(),meta) then return 0 end
+		return count
+	end,
+	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
+		local meta = minetest.get_meta(pos)
+		barter.chest.start_timer(pos, meta)
+		if not barter.chest.check_privilege(listname,player:get_player_name(),meta) then return 0 end
+		return stack:get_count()
+	end,
+	allow_metadata_inventory_take = function(pos, listname, index, stack, player)
+		local meta = minetest.get_meta(pos)
+		barter.chest.start_timer(pos, meta)
+		if not barter.chest.check_privilege(listname,player:get_player_name(),meta) then return 0 end
+		return stack:get_count()
+	end,
+	on_timer = function(pos, dtime)
+		local meta = minetest.get_meta(pos)
+		if 1 == meta:get_int("clean") then return false end
+
+		local timer = meta:get_int("timer")
+		timer = timer + dtime
+		if timer > barter.chest.expire_after then
+			-- attempt to return items to owners
+			barter.chest.cancel(meta)
+			-- also clear out items of offline users
+			local inv = meta:get_inventory()
+			inv:set_list("pl1", {})
+			inv:set_list("pl2", {})
+			return false
+		end
+		meta:set_int("timer",timer)
+		return true
+	end
+})

crafting.lua

@@ -0,0 +1,167 @@
+if minetest.get_modpath("default") then
+	minetest.register_craft({
+		output = "currency:safe",
+		recipe = {
+			{"default:steel_ingot", "default:steel_ingot",
+				"default:steel_ingot"},
+			{"default:steel_ingot", "default:mese_crystal",
+				"default:steel_ingot"},
+			{"default:steel_ingot", "default:steel_ingot",
+				"default:steel_ingot"},
+		}
+	})
+
+	minetest.register_craft({
+		output = "currency:shop",
+		recipe = {
+			{"default:sign_wall"},
+			{"default:chest_locked"},
+		}
+	})
+
+	minetest.register_craft({
+		output = "currency:barter",
+		recipe = {
+			{"default:sign_wall"},
+			{"default:chest"},
+		}
+	})
+end
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_cent_10",
+	recipe = {
+		"currency:minegeld_cent_5",
+		"currency:minegeld_cent_5"
+	},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_cent_5 2",
+	recipe = {"currency:minegeld_cent_10"},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_cent_25",
+	recipe = {
+		"currency:minegeld_cent_5",
+		"currency:minegeld_cent_5",
+		"currency:minegeld_cent_5",
+		"currency:minegeld_cent_5",
+		"currency:minegeld_cent_5"
+	},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_cent_5 5",
+	recipe = {"currency:minegeld_cent_25"},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld",
+	recipe = {
+		"currency:minegeld_cent_25",
+		"currency:minegeld_cent_25",
+		"currency:minegeld_cent_25",
+		"currency:minegeld_cent_25"
+	},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_cent_25 4",
+	recipe = {"currency:minegeld"},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_5",
+	recipe = {
+		"currency:minegeld",
+		"currency:minegeld",
+		"currency:minegeld",
+		"currency:minegeld",
+		"currency:minegeld"
+	},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld 5",
+	recipe = {"currency:minegeld_5"},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_10",
+	recipe = {
+		"currency:minegeld_5",
+		"currency:minegeld_5"
+	},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_5 2",
+	recipe = {"currency:minegeld_10"},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_10 5",
+	recipe = {"currency:minegeld_50"},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_50",
+	recipe = {
+		"currency:minegeld_10",
+		"currency:minegeld_10",
+		"currency:minegeld_10",
+		"currency:minegeld_10",
+		"currency:minegeld_10"
+	},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_100",
+	recipe = {
+		"currency:minegeld_50",
+		"currency:minegeld_50"
+	},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_50 2",
+	recipe = {"currency:minegeld_100" },
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "currency:minegeld_bundle",
+	recipe = {
+		"group:minegeld_note",
+		"group:minegeld_note",
+		"group:minegeld_note",
+		"group:minegeld_note",
+		"group:minegeld_note",
+		"group:minegeld_note",
+		"group:minegeld_note",
+		"group:minegeld_note",
+		"group:minegeld_note"
+	},
+})
+
+minetest.register_craft({
+	type = "fuel",
+	recipe = "currency:minegeld_bundle",
+	burntime = 1,
+})

craftitems.lua

@@ -0,0 +1,63 @@
+local S = minetest.get_translator("currency")
+
+minetest.register_craftitem("currency:minegeld_cent_5", {
+	description = S("@1 Minegeld cent coin", "5"),
+	inventory_image = "minegeld_cent_5.png",
+		stack_max = 1000,
+		groups = {minegeld = 1, minegeld_coin = 1}
+})
+
+minetest.register_craftitem("currency:minegeld_cent_10", {
+	description = S("@1 Minegeld cent coin", "10"),
+	inventory_image = "minegeld_cent_10.png",
+		stack_max = 1000,
+		groups = {minegeld = 1, minegeld_coin = 1}
+})
+
+minetest.register_craftitem("currency:minegeld_cent_25", {
+	description = S("@1 Minegeld cent coin", "25"),
+	inventory_image = "minegeld_cent_25.png",
+		stack_max = 1000,
+		groups = {minegeld = 1, minegeld_coin = 1}
+})
+
+minetest.register_craftitem("currency:minegeld", {
+	description = S("@1 Minegeld Note", "1"),
+	inventory_image = "minegeld.png",
+		stack_max = 65535,
+		groups = {minegeld = 1, minegeld_note = 1}
+})
+
+minetest.register_craftitem("currency:minegeld_5", {
+	description = S("@1 Minegeld Note", "5"),
+	inventory_image = "minegeld_5.png",
+		stack_max = 65535,
+		groups = {minegeld = 1, minegeld_note = 1}
+})
+
+minetest.register_craftitem("currency:minegeld_10", {
+	description = S("@1 Minegeld Note", "10"),
+	inventory_image = "minegeld_10.png",
+		stack_max = 65535,
+		groups = {minegeld = 1, minegeld_note = 1}
+})
+
+minetest.register_craftitem("currency:minegeld_50", {
+	description = S("@1 Minegeld Note", "50"),
+	inventory_image = "minegeld_50.png",
+		stack_max = 65535,
+		groups = {minegeld = 1, minegeld_note = 1}
+})
+
+minetest.register_craftitem("currency:minegeld_100", {
+	description = S("@1 Minegeld Note", "100"),
+	inventory_image = "minegeld_100.png",
+		stack_max = 65535,
+		groups = {minegeld = 1, minegeld_note = 1}
+})
+
+minetest.register_craftitem("currency:minegeld_bundle", {
+	description = S("Bundle of random Minegeld notes"),
+	inventory_image = "minegeld_bundle.png",
+		stack_max = 65535,
+})

income.lua

@@ -0,0 +1,56 @@
+local players_income = {}
+
+local income_enabled = minetest.settings:get_bool("currency.income_enabled", true)
+local creative_income_enabled = minetest.settings:get_bool("currency.creative_income_enabled", true)
+local income_item = minetest.settings:get("currency.income_item") or "currency:minegeld_10"
+local income_count = tonumber(minetest.settings:get("currency.income_count")) or 1
+local income_period = tonumber(minetest.settings:get("currency.income_period")) or 720
+
+if income_enabled then
+	local timer = 0
+	if creative_income_enabled then
+		minetest.register_globalstep(function(dtime)
+			timer = timer + dtime;
+			if timer >= income_period then
+				timer = 0
+				for _, player in ipairs(minetest.get_connected_players()) do
+					local name = player:get_player_name()
+					players_income[name] = income_count
+					minetest.log("info", "[Currency] basic income for "..name)
+				end
+			end
+		end)
+	else
+		minetest.register_globalstep(function(dtime)
+			timer = timer + dtime;
+			if timer >= income_period then
+				timer = 0
+				for _, player in ipairs(minetest.get_connected_players()) do
+					local name = player:get_player_name()
+					local privs = minetest.get_player_privs(name)
+					if not (privs.creative or privs.give) then
+						players_income[name] = income_count
+						minetest.log("info", "[Currency] basic income for "..name)
+					end
+				end
+			end
+		end)
+	end
+
+	local function earn_income(player)
+		if not player or player.is_fake_player then return end
+		local name = player:get_player_name()
+
+		local ic = players_income[name]
+		if ic and ic > 0 then
+			local inv = player:get_inventory()
+			inv:add_item("main", {name=income_item, count=ic})
+			players_income[name] = nil
+			minetest.log("info", "[Currency] added basic income for "..name.." to inventory")
+		end
+	end
+
+	minetest.register_on_dignode(function(pos, oldnode, digger) earn_income(digger) end)
+	minetest.register_on_placenode(function(pos, node, placer) earn_income(placer) end)
+	minetest.register_on_craft(function(itemstack, player, old_craft_grid, craft_inv) earn_income(player) end)
+end

init.lua

@@ -0,0 +1,28 @@
+local modpath = minetest.get_modpath("currency")
+
+minetest.log("info", "Currency mod loading...")
+
+currency = {}
+if minetest.global_exists("default") then
+	currency.node_sound_wood_defaults = default.node_sound_wood_defaults
+else
+	currency.node_sound_wood_defaults = function() end
+end
+
+dofile(modpath.."/craftitems.lua")
+minetest.log("info", "[Currency] Craft_items Loaded!")
+dofile(modpath.."/shop.lua")
+minetest.log("info", "[Currency] Shop Loaded!")
+dofile(modpath.."/barter.lua")
+minetest.log("info", "[Currency] Barter Loaded!")
+dofile(modpath.."/safe.lua")
+minetest.log("info", "[Currency] Safe Loaded!")
+dofile(modpath.."/crafting.lua")
+minetest.log("info", "[Currency] Crafting Loaded!")
+
+if minetest.settings:get_bool("creative_mode") then
+	minetest.log("info", "[Currency] Creative mode in use, skipping basic income.")
+else
+	dofile(modpath.."/income.lua")
+	minetest.log("info", "[Currency] Income Loaded!")
+end

locale/currency.de.tr

@@ -0,0 +1,45 @@
+# textdomain: currency
+# A.C.M. <undertakers_help@yahoo.com>, 2018
+
+### barter.lua ###
+
+Barter Table=Handelstisch
+Cancel=Abbruch
+Confirm=Bestätigen
+Start=Start
+
+### shop.lua ###
+
+Exchange=Tauschen
+
+### craftitems.lua ###
+
+@1 Minegeld Note=@1-Minegeld-Banknote
+@1 Minegeld cent coin=@1-Minegeldcent-Münze
+Bundle of random Minegeld notes=Bündel mit beliebigen Minegeld-Banknoten
+
+### safe.lua ###
+
+Safe=Tresor
+Safe (owned by @1)=Tresor (gehört @1)
+
+### shop.lua ###
+
+Customer gets:=Kunde erhält:
+Customer gives (pay here!)=Kunde gibt (hier bezahlen!)
+Customers gave:=Kunde gab:
+Exchange can not be done, check if you put all items!=Tausch kann nicht abgeschlossen werden. Prüfen, ob alle Gegenstände platziert wurden!
+Exchange can not be done, contact the shop owner.=Tausch kann nicht abgeschlossen werden. Geschäftsinhaber benachrichtigen!
+Exchange shop (owned by @1)=Tauschgeschäft (gehört @1)
+Exchanged!=Getauscht!
+In exchange, you give:=Im Tausch geben Sie:
+out of stock=Ausverkauft
+Owner gives:=Inhaber gibt:
+Owner wants:=Inhaber will:
+
+Owner, Use (E)+Place (right mouse button) for customer interface=Inhaber: (E)+Platzieren (rechte Maustaste) drücken für Kundeninterface ...
+
+Shop=Geschäft
+This is your own shop, you can't exchange to yourself!=Dies ist Ihr eigenes Geschäft, Sie können nicht mit sich selbst tauschen!
+You want:=Sie wollen:
+Your stock:=Ihr Lager:

locale/currency.es.tr

@@ -0,0 +1,46 @@
+# textdomain: currency
+# author: PsycoJaker
+
+
+### barter.lua ###
+
+Barter Table=Mesa de intercambios
+Cancel=Denegar
+Confirm=Aceptar
+Start=Intercambiar
+
+### shop.lua ###
+
+Exchange=Trato
+
+### craftitems.lua ###
+
+@1 Minegeld Note=Billete de @1 Minegeld
+@1 Minegeld cent coin= Moneda de @1 Minegeld
+Bundle of random Minegeld notes=Monton de dinero
+
+### safe.lua ###
+
+Safe=Caja fuerte
+Safe (owned by @1)=Caja fuerte de @1
+
+### shop.lua ###
+
+Customer gets:=Tu compra:
+Customer gives (pay here!)=Paga aqui
+Customers gave:=Los compradores ofrecieron:
+Exchange can not be done, check if you put all items!=La compra ha fallado, comprueba tu pago
+Exchange can not be done, contact the shop owner.=La compra ha fallado, comunicate con el vendedor
+Exchange shop (owned by @1)=Tienda de @1
+Exchanged!=Comprado
+In exchange, you give:=Vendes:
+out of stock=Sin exsitencias
+Owner gives:=Vendedor ofrece:
+Owner wants:=Vendedor pide:
+
+Owner, Use (E)+Place (right mouse button) for customer interface=Usa, las teclas (especial + boton derecho del raton) para ver a la interfaz del comprador
+
+Shop=Tienda
+This is your own shop, you can't exchange to yourself!=No puedes comprar en tu propia tienda
+You want:=Tu pides:
+Your stock:=Tus existencias:

locale/currency.fr.tr

@@ -0,0 +1,47 @@
+# textdomain: currency
+# Papou30, 2018.
+# Louis Royer, 2020.
+
+### barter.lua ###
+
+Barter Table=Table de troc
+Cancel=Annuler
+Confirm=Valider
+Start=Commencer
+
+### shop.lua ###
+
+Exchange=Troquer
+
+### craftitems.lua ###
+
+@1 Minegeld Note=@1 MineGeld
+@1 Minegeld cent coin=Pièce de @1 centimes de MineGeld
+Bundle of random Minegeld notes=Liasse de Minegeld de diverses valeurs
+
+### safe.lua ###
+
+Safe=Coffre-fort
+Safe (owned by @1)=Coffre-fort (appartenant à @1)
+
+### shop.lua ###
+
+Customer gets:=Client obtient:
+Customer gives (pay here!)=Client donne (payer ici!)
+Customers gave:=Le client a donné:
+Exchange can not be done, check if you put all items!=L'echange ne peut pas être fait, vérifiez que vous avez placé tous les articles!
+Exchange can not be done, contact the shop owner.=L'échange ne peut être fait, contactez le propriétaire du magasin.
+Exchange shop (owned by @1)=Boutique d'échange (appartenant à @1)
+Exchanged!=Échangé!
+In exchange, you give:=En échange, vous donnez :
+Owner gives:=Le propriétaire donne :
+Owner wants:=Le propriétaire veut :
+
+Owner, Use (E)+Place (right mouse button) for customer interface=Propriétaire, utilisez Spécial+clic droit pour l'interface client
+
+Shop=Boutique
+This is your own shop, you can't exchange to yourself!=C'est votre propre boutique, vous ne pouvez pas échanger avec vous-même!
+You want:=Vous voulez :
+Your stock:=Votre stock :
+
+

locale/currency.id.tr

@@ -0,0 +1,45 @@
+# textdomain: currency
+
+
+### barter.lua ###
+
+Barter Table=Meja Barter
+Cancel=Batal
+Confirm=Sah
+Start=Mulai
+
+### shop.lua ###
+
+Exchange=Tukar
+
+### craftitems.lua ###
+
+@1 Minegeld Note=Uang @1 Minegeld
+@1 Minegeld cent coin=Koin @1 Sen Minegeld
+Bundle of random Minegeld notes=Bundel Uang Minegeld Acak
+
+### safe.lua ###
+
+Safe=Brankas
+Safe (owned by @1)=Brankas (dimiliki oleh @1)
+
+### shop.lua ###
+
+Customer gets:=Pelanggan dapat:
+Customer gives (pay here!)=Pelanggan memberi (bayar di sini!)
+Customers gave:=Pelanggan memberi:
+Exchange can not be done, check if you put all items!=Penukaran tidak dapat diselesaikan. Periksa bahwa Anda menaruh semua yang pemilik inginkan!
+Exchange can not be done, contact the shop owner.=Penukaran tidak dapat diselesaikan. Hubungi pemilik toko.
+Exchange shop (owned by @1)=Toko Penukaran (dimiliki oleh @1)
+Exchanged!=Ditukar!
+In exchange, you give:=Anda memberi:
+out of stock=stok habis
+Owner gives:=Pemilik memberi:
+Owner wants:=Pemilik ingin:
+
+Owner, Use (E)+Place (right mouse button) for customer interface=Pemilik. Tekan (E) + Taruh (klik kanan) untuk tampilan pelanggan
+
+Shop=Toko
+This is your own shop, you can't exchange to yourself!=Ini toko milik Anda. Anda tidak bisa bertukar dengan diri sendiri!
+You want:=Anda ingin:
+Your stock:=Stok Anda:

locale/currency.it.tr

@@ -0,0 +1,45 @@
+# textdomain: currency
+# Saturn, 2020-10-23
+
+
+### barter.lua ###
+
+Barter Table=Tavolo di baratto
+Cancel=Annulla
+Confirm=Conferma
+Start=Inizia
+
+### shop.lua ###
+
+Exchange=Scambia
+
+### craftitems.lua ###
+
+@1 Minegeld Note=Banconota da @1 Minegeld
+@1 Minegeld cent coin=Moneta da @1 centesimo/i Minegeld
+Bundle of random Minegeld notes=Pacchetto di banconote Minegeld casuali
+
+### safe.lua ###
+
+Safe=Cassaforte
+Safe (owned by @1)=Cassaforte (di proprietà di @1)
+
+### shop.lua ###
+
+Customer gets:=Il cliente ottiene:
+Customer gives (pay here!)=Il cliente dà (paga qui!)
+Customers gave:=I clienti hanno dato:
+Exchange can not be done, check if you put all items!=Lo scambio non può essere fatto, controlla di avere messo tutti gli oggetti!
+Exchange can not be done, contact the shop owner.=Lo scambio non può essere fatto, contatta il proprietario del negozio.
+Exchange shop (owned by @1)=Negozio di scambio (di proprietà di @1)
+Exchanged!=Scambiato!
+In exchange, you give:=In cambio, tu dai:
+Owner gives:=Il proprietario dà:
+Owner wants:=Il proprietario vuole:
+
+Owner, Use (E)+Place (right mouse button) for customer interface=Proprietario, usa (E)+Posiziona (click destro) per l'UI cliente
+
+Shop=Negozio
+This is your own shop, you can't exchange to yourself!=Questo è il tuo negozio, non puoi fare scambi con te stesso!
+You want:=Tu vuoi:
+Your stock:=La tua scorta:

locale/currency.ms.tr

@@ -0,0 +1,46 @@
+# textdomain: currency
+
+
+### barter.lua ###
+
+Barter Table=Meja Barter
+Cancel=Batal
+Confirm=Sah
+Start=Mula
+
+### shop.lua ###
+
+Exchange=Tukar
+
+### craftitems.lua ###
+
+@1 Minegeld Note=Wang @1 MineGeld
+@1 Minegeld cent coin=
+Bundle of random Minegeld notes=Seberkas wang Minegeld rawak
+
+### safe.lua ###
+
+Safe=Peti besi
+Safe (owned by @1)=Peti besi (pemilik: @1)
+
+### shop.lua ###
+
+Customer gets:=Pelanggan dapat:
+Customer gives (pay here!)=Pelanggan beri (bayar sini!)
+Customers gave:=Pelanggan berikan:
+Exchange can not be done, check if you put all items!=Tak boleh jual, pastikan anda ada apa yang penjual mahukan!
+Exchange can not be done, contact the shop owner.=Tak boleh jual, hubungi penjual.
+Exchange shop (owned by @1)=Kedai (pemilik: @1)
+Exchanged!=Jual!
+In exchange, you give:=Anda berikan:
+Owner gives:=Penjual berikan:
+Owner wants:=Penjual inginkan:
+
+Owner, Use (E)+Place (right mouse button) for customer interface=Penjual, Gunakan (E) + Letak (butang tetikus kanan) untuk antaramuka pelanggan
+
+Shop=Kedai
+This is your own shop, you can't exchange to yourself!=Ini kedai anda, anda tidak boleh menjual kepada diri sendiri!
+You want:=Anda mahukan:
+Your stock:=Stok anda:
+
+

locale/currency.ru.tr

@@ -0,0 +1,45 @@
+# textdomain: currency
+
+
+### barter.lua ###
+
+Barter Table=Бартерный Стол
+Cancel=Отменить
+Confirm=Подтвердить
+Start=Начать
+
+### shop.lua ###
+
+Exchange=Обмен
+
+### craftitems.lua ###
+
+@1 Minegeld Note=Банконота @1 Minegeld
+@1 Minegeld cent coin=Монета @1 центов Minegeld
+Bundle of random Minegeld notes=Мешок случайных банкнот Minegeld
+
+### safe.lua ###
+
+Safe=Сейф
+Safe (owned by @1)=Сейф (владелец: @1)
+
+### shop.lua ###
+
+Customer gets:=Покупатель получает:
+Customer gives (pay here!)=Покупатели дают (платить здесь!)
+Customers gave:=Покупатели дали:
+Exchange can not be done, check if you put all items!=Обмен невозможен, проверьте, все ли предметы вы положили!
+Exchange can not be done, contact the shop owner.=Обмен невозможен, обратитесь к владельцу магазина.
+Exchange shop (owned by @1)=Обменный магазин (владелец: @1)
+Exchanged!=Обмен завершён!
+In exchange, you give:=В обмен, вы даёте:
+out of stock=нет в наличии
+Owner gives:=Владелец даёт:
+Owner wants:=Владелец хочет:
+
+Owner, Use (E)+Place (right mouse button) for customer interface=Владелец, Используйте (E)+Поставить (правая кнопка мыши) для интерфейса покупателя 
+
+Shop=Магазин
+This is your own shop, you can't exchange to yourself!=Это ваш собственный магазин, вы не можете обмениваться с самим собой!
+You want:=Вы хотите:
+Your stock:=Ваш запас:

locale/currency.uk.tr

@@ -0,0 +1,43 @@
+# textdomain: currency
+
+
+### barter.lua ###
+
+Barter Table=Бартерний Стіл
+Cancel=Скасувати
+Confirm=Підтвердити
+Start=Почати
+
+### shop.lua ###
+
+Exchange=Обмін
+
+### craftitems.lua ###
+
+@1 Minegeld Note=Банкнота @1 Minegeld
+@1 Minegeld cent coin=Монета @1 цент Minegeld
+Bundle of random Minegeld notes=Пачка випадкових банкнот Minegeld
+
+### safe.lua ###
+
+Safe=Сейф
+Safe (owned by @1)=Сейф (належить @1)
+
+### shop.lua ###
+
+Customer gets:=Покупець отримує:
+Customer gives (pay here!)=Покупець віддає (тут оплата!)
+Customers gave:=Покупець віддав:
+Exchange can not be done, check if you put all items!=Обмін неможливий, перевірте, чи точно ви поклали усі предмети!
+Exchange can not be done, contact the shop owner.=Обмін неможливий, зв'яжіться із власником магазину.
+Exchange shop (owned by @1)=Пункт обміну (належить @1)
+Exchanged!=Обмін відбувся!
+In exchange, you give:=Натомість ви даєте:
+Owner gives:=Власник віддає:
+Owner wants:=Власник хоче:
+
+Owner, Use (E)+Place (right mouse button) for customer interface=Власник, використовуйте (E)+Розмістити (ПКМ), аби відкрити інтерфейс покупця
+Shop=Магазин
+This is your own shop, you can't exchange to yourself!=Ви не можете обмінюватися з самим собою у своєму ж магазині!
+You want:=Ви хочете:
+Your stock:=Ваш запас:

locale/template.txt

@@ -0,0 +1,45 @@
+# textdomain: currency
+
+
+### barter.lua ###
+
+Barter Table=
+Cancel=
+Confirm=
+Start=
+
+### shop.lua ###
+
+Exchange=
+
+### craftitems.lua ###
+
+@1 Minegeld Note=
+@1 Minegeld cent coin=
+Bundle of random Minegeld notes=
+
+### safe.lua ###
+
+Safe=
+Safe (owned by @1)=
+
+### shop.lua ###
+
+Customer gets:=
+Customer gives (pay here!)=
+Customers gave:=
+Exchange can not be done, check if you put all items!=
+Exchange can not be done, contact the shop owner.=
+Exchange shop (owned by @1)=
+Exchanged!=
+In exchange, you give:=
+out of stock=
+Owner gives:=
+Owner wants:=
+
+Owner, Use (E)+Place (right mouse button) for customer interface=
+
+Shop=
+This is your own shop, you can't exchange to yourself!=
+You want:=
+Your stock:=

loot.lua

@@ -0,0 +1,49 @@
+if not minetest.get_modpath("loot") then
+	return
+end
+
+loot.register_loot({
+	weights = { generic = 50 },
+	payload = {
+		stack = ItemStack("currency:minegeld"),
+		min_size = 1,
+		max_size = 250,
+	},
+})
+
+loot.register_loot({
+	weights = { generic = 50 },
+	payload = {
+		stack = ItemStack("currency:minegeld_5"),
+		min_size = 1,
+		max_size = 50,
+	},
+})
+
+loot.register_loot({
+	weights = { generic = 50 },
+	payload = {
+		stack = ItemStack("currency:minegeld_10"),
+		min_size = 1,
+		max_size = 10,
+	},
+})
+
+
+loot.register_loot({
+	weights = { generic = 50 },
+	payload = {
+		stack = ItemStack("currency:minegeld_50"),
+		min_size = 1,
+		max_size = 10,
+	},
+})
+
+loot.register_loot({
+	weights = { generic = 50 },
+	payload = {
+		stack = ItemStack("currency:minegeld_100"),
+		min_size = 1,
+		max_size = 10,
+	},
+})

mod.conf

@@ -0,0 +1,7 @@
+name = currency
+optional_depends = default, loot, pipeworks
+description = Provides shops, barter tables, safes, and multiple denominations of currency, called "Minegeld".
+min_minetest_version = 5.2.0
+release = 31360
+author = mt-mods
+title = Currency

safe.lua

@@ -0,0 +1,111 @@
+local S = minetest.get_translator("currency")
+
+function currency.get_safe_formspec(pos)
+	local spos = pos.x .. "," .. pos.y .. "," ..pos.z
+	local formspec =
+		"size[8,9]"..
+		"list[nodemeta:".. spos .. ";main;1,1;6,2;]"..
+		"list[current_player;main;0,5;8,4;]"..
+		"listring[nodemeta:".. spos .. ";main]"..
+		"listring[current_player;main]"
+	return formspec
+end
+
+if minetest.global_exists("default") then
+	default.get_safe_formspec = currency.get_safe_formspec
+end
+
+local function has_safe_privilege(meta, player)
+	local name = ""
+	if player then
+		if minetest.check_player_privs(player, "protection_bypass") then
+			return true
+		end
+		name = player:get_player_name()
+	end
+	if name ~= meta:get_string("owner") then
+		return false
+	end
+	return true
+end
+
+minetest.register_node("currency:safe", {
+	description = S("Safe"),
+	inventory_image = "safe_front.png",
+	paramtype = "light",
+	paramtype2 = "facedir",
+	tiles = {"safe_side.png",
+			"safe_side.png",
+			"safe_side.png",
+			"safe_side.png",
+			"safe_side.png",
+			"safe_front.png",},
+	is_ground_content = false,
+	groups = {cracky=1},
+	after_place_node = function(pos, placer)
+		local meta = minetest.get_meta(pos)
+		meta:set_string("owner", placer:get_player_name() or "")
+		meta:set_string("infotext", S("Safe (owned by @1)", meta:get_string("owner")))
+	end,
+	on_construct = function(pos)
+		local meta = minetest.get_meta(pos)
+		meta:set_string("infotext", "Safe")
+		meta:set_string("owner", "")
+		local inv = meta:get_inventory()
+		inv:set_size("main", 6*2)
+	end,
+	can_dig = function(pos,player)
+		local meta = minetest.get_meta(pos);
+		local inv = meta:get_inventory()
+		return inv:is_empty("main") and has_safe_privilege(meta, player)
+	end,
+	allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
+		local meta = minetest.get_meta(pos)
+		if not has_safe_privilege(meta, player) then
+			minetest.log("action", player:get_player_name().." tried to access a safe belonging to "
+				..meta:get_string("owner").." at "
+				..minetest.pos_to_string(pos))
+			return 0
+		end
+		return count
+	end,
+	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
+		local meta = minetest.get_meta(pos)
+		if not has_safe_privilege(meta, player) then
+			minetest.log("action", player:get_player_name().." tried to access a safe belonging to "
+				..meta:get_string("owner").." at "
+				..minetest.pos_to_string(pos))
+			return 0
+		end
+		return stack:get_count()
+	end,
+	allow_metadata_inventory_take = function(pos, listname, index, stack, player)
+		local meta = minetest.get_meta(pos)
+		if not has_safe_privilege(meta, player) then
+			minetest.log("action", player:get_player_name().." tried to access a safe belonging to "
+				..meta:get_string("owner").." at "
+				..minetest.pos_to_string(pos))
+			return 0
+		end
+		return stack:get_count()
+	end,
+	on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
+		minetest.log("action", player:get_player_name().." moves stuff in safe at "..minetest.pos_to_string(pos))
+	end,
+	on_metadata_inventory_put = function(pos, listname, index, stack, player)
+		minetest.log("action", player:get_player_name().." moves stuff to safe at "..minetest.pos_to_string(pos))
+	end,
+	on_metadata_inventory_take = function(pos, listname, index, stack, player)
+		minetest.log("action", player:get_player_name().." takes stuff from safe at "..minetest.pos_to_string(pos))
+	end,
+	on_rightclick = function(pos, node, clicker)
+		local meta = minetest.get_meta(pos)
+		if has_safe_privilege(meta, clicker) then
+			minetest.show_formspec(
+				clicker:get_player_name(),
+				"currency:safe",
+				currency.get_safe_formspec(pos)
+			)
+		end
+	end,
+})

settingtypes.txt

@@ -0,0 +1,14 @@
+# Is income enabled?
+currency.income_enabled (Is currency income enabled?) bool true
+
+# Is income enabled for creative players?
+currency.creative_income_enabled (Is income enabled for creative players?) bool true
+
+# Item that is given as income by the currency mod
+currency.income_item (Currency income item) string currency:minegeld_10
+
+# Number of items given as income
+currency.income_count (Currency income item) int 1 1 65535
+
+# Length of time (in seconds) between checking if a user should get income
+currency.income_period (Currency income period) int 720

shop.lua

@@ -0,0 +1,340 @@
+local S = minetest.get_translator("currency")
+
+currency.shop = {}
+if minetest.global_exists("default") then
+	default.shop = currency.shop
+end
+
+currency.shop.current_shop = {}
+currency.shop.formspec = {
+	customer = function(pos)
+		local list_name = "nodemeta:"..pos.x..','..pos.y..','..pos.z
+		local formspec = "size[8,9.5]"..
+		"label[0,0;" .. S("Customer gives (pay here!)") .. "]"..
+		"list[current_player;customer_gives;0,0.5;3,2;]"..
+		"label[0,2.5;" .. S("Customer gets:") .. "]"..
+		"list[current_player;customer_gets;0,3;3,2;]"..
+		"label[5,0;" .. S("Owner wants:") .. "]"..
+		"list["..list_name..";owner_wants;5,0.5;3,2;]"..
+		"label[5,2.5;" .. S("Owner gives:") .. "]"..
+		"list["..list_name..";owner_gives;5,3;3,2;]"..
+		"list[current_player;main;0,5.5;8,4;]"..
+		"button[3,2;2,1;exchange;" .. S("Exchange") .. "]"
+		return formspec
+	end,
+	owner = function(pos)
+		local list_name = "nodemeta:"..pos.x..','..pos.y..','..pos.z
+		local formspec = "size[8,9.5]"..
+		"label[0,0;" .. S("Customers gave:") .. "]"..
+		"list["..list_name..";customers_gave;0,0.5;3,2;]"..
+		"label[0,2.5;" .. S("Your stock:") .. "]"..
+		"list["..list_name..";stock;0,3;3,2;]"..
+		"label[4,0;" .. S("You want:") .. "]"..
+		"list["..list_name..";owner_wants;4,0.5;3,2;]"..
+		"label[4,2.5;" .. S("In exchange, you give:") .. "]"..
+		"list["..list_name..";owner_gives;4,3;3,2;]"..
+		"label[0,5;" .. S("Owner, Use (E)+Place (right mouse button) for customer interface") .. "]"..
+		"list[current_player;main;0,5.5;8,4;]"
+		return formspec
+	end,
+}
+
+local have_pipeworks = minetest.global_exists("pipeworks")
+
+currency.shop.check_privilege = function(listname, playername, meta)
+	--[[if listname == "pl1" then
+		if playername ~= meta:get_string("pl1") then
+			return false
+		elseif meta:get_int("pl1step") ~= 1 then
+			return false
+		end
+	end
+	if listname == "pl2" then
+		if playername ~= meta:get_string("pl2") then
+			return false
+		elseif meta:get_int("pl2step") ~= 1 then
+			return false
+		end
+	end]]
+	return true
+end
+
+
+currency.shop.give_inventory = function(inv, list, playername)
+	local player = minetest.get_player_by_name(playername)
+	if player then
+		for k, v in ipairs(inv:get_list(list)) do
+			player:get_inventory():add_item("main", v)
+			inv:remove_item(list, v)
+		end
+	end
+end
+
+currency.shop.cancel = function(meta)
+	--[[currency.shop.give_inventory(meta:get_inventory(),"pl1",meta:get_string("pl1"))
+	currency.shop.give_inventory(meta:get_inventory(),"pl2",meta:get_string("pl2"))
+	meta:set_string("pl1","")
+	meta:set_string("pl2","")
+	meta:set_int("pl1step",0)
+	meta:set_int("pl2step",0)]]
+end
+
+currency.shop.exchange = function(meta)
+	--[[currency.shop.give_inventory(meta:get_inventory(),"pl1",meta:get_string("pl2"))
+	currency.shop.give_inventory(meta:get_inventory(),"pl2",meta:get_string("pl1"))
+	meta:set_string("pl1","")
+	meta:set_string("pl2","")
+	meta:set_int("pl1step",0)
+	meta:set_int("pl2step",0)]]
+end
+
+local check_stock = function(pos)
+	local meta = minetest.get_meta(pos)
+	local minv = meta:get_inventory()
+	local gives = minv:get_list("owner_gives")
+	local can_exchange = true
+	for i, item in pairs(gives) do
+		if not minv:contains_item("stock", item) then
+			can_exchange = false
+		end
+	end
+	local owner = meta:get_string("owner")
+	if can_exchange then
+		meta:set_string("infotext",
+			S("Exchange shop (owned by @1)", owner)
+		)
+		local applicable = "currency:shop"
+		local node = minetest.get_node(pos)
+		if node.name == applicable then
+			return
+		end
+		node.name = applicable
+		minetest.swap_node(pos, node)
+	else
+		meta:set_string("infotext",
+			S("Exchange shop (owned by @1)", owner)
+			.. ", " .. S("out of stock")
+		)
+		local applicable = "currency:shop_empty"
+		local node = minetest.get_node(pos)
+		if node.name == applicable then
+			return
+		end
+		node.name = applicable
+		minetest.swap_node(pos,	node)
+	end
+end
+
+minetest.register_node("currency:shop", {
+	description = S("Shop"),
+	paramtype2 = "facedir",
+	tiles = {
+		"shop_top.png",
+		"shop_top.png",
+		"shop_side.png",
+		"shop_side.png",
+		"shop_side.png",
+		"shop_front.png"
+	},
+	inventory_image = "shop_front.png",
+	groups = {choppy=2,oddly_breakable_by_hand=2,tubedevice=1,tubedevice_receiver=1},
+	is_ground_content = false,
+	sounds = currency.node_sound_wood_defaults(),
+	after_place_node = function(pos, placer, itemstack)
+		local owner = placer:get_player_name()
+		local meta = minetest.get_meta(pos)
+		meta:set_string("infotext", S("Exchange shop (owned by @1)", owner))
+		meta:set_string("owner", owner)
+		--[[meta:set_string("pl1","")
+		meta:set_string("pl2","")]]
+		local inv = meta:get_inventory()
+		inv:set_size("customers_gave", 3*2)
+		inv:set_size("stock", 3*2)
+		inv:set_size("owner_wants", 3*2)
+		inv:set_size("owner_gives", 3*2)
+		if have_pipeworks then pipeworks.after_place(pos) end
+		check_stock(pos)
+	end,
+	after_dig_node = (have_pipeworks and pipeworks and pipeworks.after_dig),
+	tube = {
+		insert_object = function(pos, node, stack, direction)
+			local meta = minetest.get_meta(pos)
+			local inv = meta:get_inventory()
+			local result = inv:add_item("stock", stack)
+			check_stock(pos)
+			return result
+		end,
+		can_insert = function(pos, node, stack, direction)
+			local meta = minetest.get_meta(pos)
+			local inv = meta:get_inventory()
+			return inv:room_for_item("stock", stack)
+		end,
+		input_inventory = "customers_gave",
+		connect_sides = {left = 1, right = 1, back = 1, front = 1, bottom = 1, top = 1}
+	},
+	on_rightclick = function(pos, node, clicker, itemstack)
+		clicker:get_inventory():set_size("customer_gives", 3*2)
+		clicker:get_inventory():set_size("customer_gets", 3*2)
+		currency.shop.current_shop[clicker:get_player_name()] = pos
+		local meta = minetest.get_meta(pos)
+		if clicker:get_player_name() == meta:get_string("owner") and not clicker:get_player_control().aux1 then
+			minetest.show_formspec(clicker:get_player_name(),"currency:shop_formspec",currency.shop.formspec.owner(pos))
+		else
+			minetest.show_formspec(clicker:get_player_name(),"currency:shop_formspec",currency.shop.formspec.customer(pos))
+		end
+	end,
+	allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
+		local meta = minetest.get_meta(pos)
+		if player:get_player_name() ~= meta:get_string("owner") then return 0 end
+		return count
+	end,
+	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
+		local meta = minetest.get_meta(pos)
+		if player:get_player_name() ~= meta:get_string("owner") then return 0 end
+		return stack:get_count()
+	end,
+	allow_metadata_inventory_take = function(pos, listname, index, stack, player)
+		local meta = minetest.get_meta(pos)
+		if player:get_player_name() ~= meta:get_string("owner") then return 0 end
+		return stack:get_count()
+	end,
+	on_metadata_inventory_move = check_stock,
+	on_metadata_inventory_put = check_stock,
+	on_metadata_inventory_take = check_stock,
+	can_dig = function(pos, player)
+		local meta = minetest.get_meta(pos)
+		local inv = meta:get_inventory()
+		return inv:is_empty("stock") and
+			inv:is_empty("customers_gave") and
+			inv:is_empty("owner_wants") and
+			inv:is_empty("owner_gives")
+	end
+})
+
+minetest.register_node("currency:shop_empty", {
+	description = S("Shop") .. " (" .. S("out of stock") .. ")",
+	paramtype2 = "facedir",
+	tiles = {
+		"shop_top.png",
+		"shop_top.png",
+		"shop_side_empty.png",
+		"shop_side_empty.png",
+		"shop_side_empty.png",
+		"shop_front_empty.png"
+	},
+	drop = "currency:shop",
+	groups = {choppy=2,oddly_breakable_by_hand=2,tubedevice=1,tubedevice_receiver=1,not_in_creative_inventory=1},
+	is_ground_content = false,
+	sounds = currency.node_sound_wood_defaults(),
+	after_dig_node = (have_pipeworks and pipeworks and pipeworks.after_dig),
+	tube = {
+		insert_object = function(pos, node, stack, direction)
+			local meta = minetest.get_meta(pos)
+			local inv = meta:get_inventory()
+			local result = inv:add_item("stock", stack)
+			check_stock(pos)
+			return result
+		end,
+		can_insert = function(pos,node,stack,direction)
+			local meta = minetest.get_meta(pos)
+			local inv = meta:get_inventory()
+			return inv:room_for_item("stock", stack)
+		end,
+		input_inventory = "customers_gave",
+		connect_sides = {left = 1, right = 1, back = 1, front = 1, bottom = 1, top = 1}
+	},
+	on_rightclick = function(pos, node, clicker, itemstack)
+		clicker:get_inventory():set_size("customer_gives", 3*2)
+		clicker:get_inventory():set_size("customer_gets", 3*2)
+		currency.shop.current_shop[clicker:get_player_name()] = pos
+		local meta = minetest.get_meta(pos)
+		if clicker:get_player_name() == meta:get_string("owner") and not clicker:get_player_control().aux1 then
+			minetest.show_formspec(clicker:get_player_name(),"currency:shop_formspec",currency.shop.formspec.owner(pos))
+		else
+			minetest.show_formspec(clicker:get_player_name(),"currency:shop_formspec",currency.shop.formspec.customer(pos))
+		end
+	end,
+	allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
+		local meta = minetest.get_meta(pos)
+		if player:get_player_name() ~= meta:get_string("owner") then return 0 end
+		return count
+	end,
+	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
+		local meta = minetest.get_meta(pos)
+		if player:get_player_name() ~= meta:get_string("owner") then return 0 end
+		return stack:get_count()
+	end,
+	allow_metadata_inventory_take = function(pos, listname, index, stack, player)
+		local meta = minetest.get_meta(pos)
+		if player:get_player_name() ~= meta:get_string("owner") then return 0 end
+		return stack:get_count()
+	end,
+	on_metadata_inventory_move = check_stock,
+	on_metadata_inventory_put = check_stock,
+	on_metadata_inventory_take = check_stock,
+	can_dig = function(pos, player)
+		local meta = minetest.get_meta(pos)
+		local inv = meta:get_inventory()
+		return inv:is_empty("stock") and
+			inv:is_empty("customers_gave") and
+			inv:is_empty("owner_wants") and
+			inv:is_empty("owner_gives")
+	end
+})
+
+minetest.register_on_player_receive_fields(function(sender, formname, fields)
+	if formname == "currency:shop_formspec" and fields.exchange ~= nil and fields.exchange ~= "" then
+		local name = sender:get_player_name()
+		local pos = currency.shop.current_shop[name]
+		local meta = minetest.get_meta(pos)
+		if meta:get_string("owner") == name then
+			minetest.chat_send_player(name, S("This is your own shop, you can't exchange to yourself!"))
+		else
+			local minv = meta:get_inventory()
+			local pinv = sender:get_inventory()
+			local invlist_tostring = function(invlist)
+				local out = {}
+				for i, item in pairs(invlist) do
+					out[i] = item:to_string()
+				end
+				return out
+			end
+			local wants = minv:get_list("owner_wants")
+			local gives = minv:get_list("owner_gives")
+			if wants == nil or gives == nil then return end -- do not crash the server
+			-- Check if we can exchange
+			local can_exchange = true
+			local owners_fault = false
+			for i, item in pairs(wants) do
+				if not pinv:contains_item("customer_gives", item) then
+					can_exchange = false
+				end
+			end
+			for i, item in pairs(gives) do
+				if not minv:contains_item("stock", item) then
+					can_exchange = false
+					owners_fault = true
+				end
+			end
+			if can_exchange then
+				local it
+				for i, item in pairs(wants) do
+					it = pinv:remove_item("customer_gives", item)
+					minv:add_item("customers_gave", it)
+				end
+				for i, item in pairs(gives) do
+					it = minv:remove_item("stock", item)
+					pinv:add_item("customer_gets", it)
+				end
+				minetest.chat_send_player(name, S("Exchanged!"))
+				check_stock(pos)
+			else
+				if owners_fault then
+					minetest.chat_send_player(name, S("Exchange can not be done, contact the shop owner."))
+				else
+					minetest.chat_send_player(name, S("Exchange can not be done, check if you put all items!"))
+				end
+			end
+		end
+	end
+end)