Merge pull request 'Imported the tga_encoder as subtree' (#4222) from tga_encoder_update into master

Reviewed-on: MineClone2/MineClone2#4222

mods/CORE/tga_encoder/LICENSE

@@ -0,0 +1,674 @@
+                    GNU 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.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them 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 prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  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.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU 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 specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 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.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     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
+state 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 3 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, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program 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, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU 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.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

mods/CORE/tga_encoder/README.md

@@ -1,4 +1,87 @@
 # tga_encoder
 A TGA Encoder written in Lua without the use of external Libraries.
 
+Created by fleckenstein for MineClone2, then improved by erlehmann.
+
 May be used as a Minetest mod.
+
+See `examples.lua` for example code and usage hints.
+
+## Use Cases for `tga_encoder`
+
+### Encoding Textures for Editing
+
+TGA images of types 1/2/3 consist of header data followed by a pixel array.
+
+This makes it trivial to parse TGA files – and even edit pixels in-place.
+
+No checksums need to be updated on any kind of in-place texture editing.
+
+**Tip**: When storing an editable image in item meta, use zlib compression.
+
+### Legacy Minetest Texture Encoding
+
+Minetest 5.4 did not include `minetest.encode_png()` (or any equvivalent).
+
+Since `tga_encoder` is written in pure Lua, it does not need engine support.
+
+**Tip:** Look at `examples.lua` and the Minetest mod `mcl_maps` for guidance.
+
+### Advanced Texture Format Control
+
+The function `minetest.encode_png()` always encodes images as 32bpp RGBA.
+
+`tga_encoder` allows saving images as grayscale, 16bpp RGBA and 24bpp RGB.
+
+For generating maps from terrain, color-mapped formats can be more useful.
+
+### Encoding Very Small Textures
+
+Images of size 8×8 or below are often smaller than an equivalent PNG file.
+
+Note that on many filesystems files use at least 4096 bytes (i.e. 64×64).
+
+Therefore, saving bytes on files up to a few 100 bytes is often useless.
+
+### Encoding Reference Textures
+
+TGA is a simple format, which makes it easy to create reference textures.
+
+Using a hex editor, one can trivially see how all the pixels are stored.
+
+## Supported Image Types
+
+For all types, images are encoded in a fast single pass (i.e. append-only).
+
+### Color-Mapped Images (Type 1)
+
+These images contain a palette, followed by pixel data.
+
+* `A1R5G5B5` (8bpp RGB)
+* `B8G8R8` (8bpp RGB)
+* `B8G8R8A8` (8bpp RGBA)
+
+### True-Color Images (Type 2)
+
+These images contain uncompressed RGB(A) pixel data.
+
+* `A1R5G5B5` (16bpp RGBA)
+* `B8G8R8` (24bpp RGB)
+* `B8G8R8A8` (32bpp RGBA)
+
+### Grayscale Images (Type 3)
+
+* `Y8` (8bpp grayscale)
+
+### Run-Length Encoded (RLE), True-Color Images (Type 10)
+
+These images contain compressed RGB(A) pixel data.
+
+* `A1R5G5B5` (16bpp RGBA)
+* `B8G8R8` (24bpp RGB)
+* `B8G8R8A8` (32bpp RGBA)
+
+## TODO
+
+* Actually support `R8G8B8A8` input for `A1R5G5B5` output
+* Add both zoomable and explorable maps to `mcl_maps`.

mods/CORE/tga_encoder/colormap_generator.lua

@@ -0,0 +1,32 @@
+dofile("init.lua")
+
+-- This generates images necessary to colorize 16 Minetest nodes in 4096 colors.
+-- It serves as a demonstration of what you can achieve using colormapped nodes.
+-- It is be useful for grass or beam or glass nodes that need to blend smoothly.
+
+-- Sample depth rescaling is done according to the algorithm presented in:
+-- <https://www.w3.org/TR/2003/REC-PNG-20031110/#13Sample-depth-rescaling>
+local max_sample_in = math.pow(2, 4) - 1
+local max_sample_out = math.pow(2, 8) - 1
+
+for r = 0,15 do
+	local pixels = {}
+	for g = 0,15 do
+		if nil == pixels[g + 1] then
+			pixels[g + 1] = {}
+		end
+		for b = 0,15 do
+			local color = {
+				math.floor((r * max_sample_out / max_sample_in) + 0.5),
+				math.floor((g * max_sample_out / max_sample_in) + 0.5),
+				math.floor((b * max_sample_out / max_sample_in) + 0.5),
+			}
+			pixels[g + 1][b + 1] = color
+		end
+	end
+	local filename = "colormap_" .. tostring(r) .. ".tga"
+	tga_encoder.image(pixels):save(
+		filename,
+		{ color_format="A1R5G5B5" } -- waste less bits
+	)
+end

mods/CORE/tga_encoder/donut.lua

@@ -0,0 +1,105 @@
+#!/usr/bin/env lua5.1
+-- -*- coding: utf-8 -*-
+
+-- 3D “donut” shape rendering using floating-point math
+-- see <https://www.a1k0n.net/2011/07/20/donut-math.html>
+
+-- cargo-culted by erle 2023-09-18
+
+local theta_spacing = 0.01  -- 0.07
+local phi_spacing = 0.002  -- 0.02
+
+local R1 = 1
+local R2 = 2
+local K2 = 5
+
+local screen_height = 256
+local screen_width = 256
+
+local K1 = screen_width * K2 * 3 / ( 8 * ( R1 + R2 ) )
+
+local output = {}
+local zbuffer = {}
+
+local grey = { 120, 120, 120 }
+local gray = { 136, 136, 136 }
+
+for y = 1,screen_height,1 do
+   output[y] = {}
+   zbuffer[y] = {}
+   for x = 1,screen_width,1 do
+      local hori = math.floor( ( (y - 1) / 32 ) % 2 )
+      local vert = math.floor( ( (x - 1) / 32 ) % 2 )
+      output[y][x] = hori ~= vert and grey or gray
+      zbuffer[y][x] = 0
+   end
+end
+
+function render_frame(A, B)
+   -- precompute sines and cosines of A and B
+   local cosA = math.cos(A)
+   local sinA = math.sin(A)
+   local cosB = math.cos(B)
+   local sinB = math.sin(B)
+
+   -- theta goas around the cross-sectional circle of a torus
+   local theta = 0
+   while theta <= 2*math.pi do
+      if ( theta < 2*math.pi * 1/8 ) or ( theta > 2*math.pi * 7/8 ) then
+         theta = theta + (theta_spacing * 16)
+      else
+         theta = theta + theta_spacing
+      end
+      -- precompute sines and cosines of theta
+      local costheta = math.cos(theta)
+      local sintheta = math.sin(theta)
+
+      -- phi goes around the center of revolution of a torus
+      local phi = 0
+      while phi <= 2*math.pi do
+         if ( phi > 2*math.pi * 3/8 ) and ( phi < 2*math.pi * 5/8 ) then
+            phi = phi + (phi_spacing * 128)
+         else
+            phi = phi + phi_spacing
+         end
+        -- precompute sines and cosines of phi
+         local cosphi = math.cos(phi)
+         local sinphi = math.sin(phi)
+
+         -- 2D (x, y) coordinates of the circle, before revolving
+         local circlex = R2 + R1*costheta
+         local circley = R1*sintheta
+
+         -- 3D (x, y, z) coordinates after rotation
+         local x = circlex*(cosB*cosphi + sinA*sinB*sinphi) - circley*cosA*sinB
+         local y = circlex*(sinB*cosphi - sinA*cosB*sinphi) + circley*cosA*cosB
+         local z = K2 + cosA*circlex*sinphi + circley*sinA
+
+         local ooz = 1/z
+
+         -- x and y projection
+         local xp = math.floor(screen_width/2 + K1*ooz*x)
+         local yp = math.floor(screen_height/2 + K1*ooz*y)
+
+         -- calculate luminance
+         local L = cosphi*costheta*sinB - cosA*costheta*sinphi - sinA*sintheta + cosB*( cosA*sintheta - costheta*sinA*sinphi )
+         -- if (L > 0) then
+         if (true) then
+            if (ooz > zbuffer[yp][xp]) then
+                   zbuffer[yp][xp] = ooz
+                   local luminance = math.max( math.ceil( L * 180 ), 0 )
+                   -- luminance is now in the range 0 to 255
+                   r = math.ceil( (luminance + xp) / 2 )
+                   g = math.ceil( (luminance + yp) / 2 )
+                   b = math.ceil( (luminance + xp + yp) / 3 )
+                   output[yp][xp] = { r, g, b }
+            end
+         end
+      end
+   end
+end
+
+dofile('init.lua')
+
+render_frame(-0.7, 0.7)
+tga_encoder.image(output):save("donut.tga")

mods/CORE/tga_encoder/examples.lua

@@ -0,0 +1,181 @@
+dofile("init.lua")
+
+-- encode a bitmap
+local _ = { 0, 0, 0 }
+local R = { 255, 127, 127 }
+local pixels = {
+	{ _, _, _, _, _, _, _ },
+	{ _, _, _, R, _, _, _ },
+	{ _, _, R, R, R, _, _ },
+	{ _, R, R, R, R, R, _ },
+	{ _, R, R, R, R, R, _ },
+	{ _, _, R, _, R, _, _ },
+	{ _, _, _, _, _, _, _ },
+}
+tga_encoder.image(pixels):save("bitmap_small.tga")
+
+-- test that image can be encoded
+local bitmap_small_0 = tga_encoder.image(pixels)
+bitmap_small_0:encode()
+assert(191 == #bitmap_small_0.data)
+
+-- test that imbage can be encoded with parameters
+local bitmap_small_1 = tga_encoder.image(pixels)
+bitmap_small_1:encode(
+	{
+		colormap = {},
+		color_format = "B8G8R8",
+		compression = "RAW",
+	}
+)
+assert(191 == #bitmap_small_1.data)
+
+-- change a single pixel, then rescale the bitmap
+local pixels_orig = pixels
+pixels_orig[4][4] = { 255, 255, 255 }
+local pixels = {}
+for x = 1,56,1 do
+	local x_orig = math.ceil(x/8)
+	for z = 1,56,1 do
+		local z_orig = math.ceil(z/8)
+		local color = pixels_orig[z_orig][x_orig]
+		pixels[z] = pixels[z] or {}
+		pixels[z][x] = color
+	end
+end
+tga_encoder.image(pixels):save("bitmap_large.tga")
+
+-- note that the uncompressed grayscale TGA file written in this
+-- example is 80 bytes – but an optimized PNG file is 81 bytes …
+local pixels = {}
+for x = 1,6,1 do -- left to right
+	for z = 1,6,1 do -- bottom to top
+		local color = { math.min(x * z * 4 - 1, 255) }
+		pixels[z] = pixels[z] or {}
+		pixels[z][x] = color
+	end
+end
+tga_encoder.image(pixels):save("gradient_8bpp_raw.tga", {color_format="Y8", compression="RAW"})
+
+local pixels = {}
+for x = 1,16,1 do -- left to right
+	for z = 1,16,1 do -- bottom to top
+		local r = math.min(x * 32 - 1, 255)
+		local g = math.min(z * 32 - 1, 255)
+		local b = 0
+		-- blue rectangle in top right corner
+		if x > 8 and z > 8 then
+			r = 0
+			g = 0
+			b = math.min(z * 16 - 1, 255)
+		end
+		local color = { r, g, b }
+		pixels[z] = pixels[z] or {}
+		pixels[z][x] = color
+	end
+end
+local gradients = tga_encoder.image(pixels)
+gradients:save("gradients_8bpp_raw.tga", {color_format="Y8", compression="RAW"})
+gradients:save("gradients_16bpp_raw.tga", {color_format="A1R5G5B5", compression="RAW"})
+gradients:save("gradients_16bpp_rle.tga", {color_format="A1R5G5B5", compression="RLE"})
+gradients:save("gradients_24bpp_raw.tga", {color_format="B8G8R8", compression="RAW"})
+gradients:save("gradients_24bpp_rle.tga", {color_format="B8G8R8", compression="RLE"})
+
+for x = 1,16,1 do -- left to right
+	for z = 1,16,1 do -- bottom to top
+		local color = pixels[z][x]
+		color[#color+1] = ((x * x) + (z * z)) % 256
+		pixels[z][x] = color
+	end
+end
+gradients:save("gradients_32bpp_raw.tga", {color_format="B8G8R8A8", compression="RAW"})
+-- the RLE-compressed file is larger than just dumping pixels because
+-- the gradients in this picture can not be compressed well using RLE
+gradients:save("gradients_32bpp_rle.tga", {color_format="B8G8R8A8", compression="RLE"})
+
+local pixels = {}
+for x = 1,512,1 do -- left to right
+	for z = 1,512,1 do -- bottom to top
+		local oz = (z - 256) / 256 + 0.75
+		local ox = (x - 256) / 256
+		local px, pz, i = 0, 0, 0
+		while (px * px) + (pz * pz) <= 4 and i < 128 do
+			px = (px * px) - (pz * pz) + oz
+			pz = (2 * px  * pz) + ox
+			i =  i + 1
+		end
+		local color = {
+			math.max(0, math.min(255, math.floor(px * 64))),
+			math.max(0, math.min(255, math.floor(pz * 64))),
+			math.max(0, math.min(255, math.floor(i))),
+		}
+		pixels[z] = pixels[z] or {}
+		pixels[z][x] = color
+	end
+end
+tga_encoder.image(pixels):save("fractal_8bpp.tga", {color_format="Y8"})
+tga_encoder.image(pixels):save("fractal_16bpp.tga", {color_format="A1R5G5B5"})
+tga_encoder.image(pixels):save("fractal_24bpp.tga", {color_format="B8G8R8"})
+
+-- encode a colormapped bitmap
+local K = { 0 }
+local B = { 1 }
+local R = { 2 }
+local G = { 3 }
+local W = { 4 }
+local colormap = {
+	{   1,   2,   3 }, -- K
+	{   0,   0, 255 }, -- B
+	{ 255,   0,   0 }, -- R
+	{   0, 255,   0 }, -- G
+	{ 253, 254, 255 }, -- W
+}
+local pixels = {
+	{ W, K, W, K, W, K, W },
+	{ R, G, B, R, G, B, K },
+	{ K, W, K, W, K, W, K },
+	{ G, B, R, G, B, R, W },
+	{ W, W, W, K, K, K, W },
+	{ B, R, G, B, R, G, K },
+	{ B, R, G, B, R, G, W },
+}
+-- note that the uncompressed colormapped TGA file written in this
+-- example is 108 bytes – but an optimized PNG file is 121 bytes …
+tga_encoder.image(pixels):save("colormapped_B8G8R8.tga", {colormap=colormap})
+-- encoding as A1R5G5B5 saves 1 byte per palette entry → 103 bytes
+tga_encoder.image(pixels):save("colormapped_A1R5G5B5.tga", {colormap=colormap, color_format="A1R5G5B5"})
+
+-- encode a colormapped bitmap with transparency
+local _ = { 0 }
+local K = { 1 }
+local W = { 2 }
+local colormap = {
+	{   0,   0,   0,   0 },
+	{   0,   0,   0, 255 },
+	{ 255, 255, 255, 255 },
+}
+local pixels = {
+	{ _, K, K, K, K, K, _ },
+	{ _, K, W, W, W, K, _ },
+	{ K, K, W, W, W, K, K },
+	{ K, W, W, W, W, W, K },
+	{ _, K, W, W, W, K, _ },
+	{ _, _, K, W, K, _, _ },
+	{ _, _, _, K, _, _, _ },
+}
+tga_encoder.image(pixels):save("colormapped_B8G8R8A8.tga", {colormap=colormap})
+
+-- encoding a colormapped image with illegal colormap indexes should error out
+local colormap = {
+	{   0,   0,   0,   0 },
+	{   0,   0,   0, 255 },
+}
+local status, message = pcall(
+	function ()
+		tga_encoder.image(pixels):encode({colormap=colormap})
+	end
+)
+assert(
+	false == status and
+	"init.lua:36: colormap index 2 not in colormap of size 2" == message
+)

mods/CORE/tga_encoder/init.lua

@@ -9,60 +9,566 @@ local image = setmetatable({}, {
 })
 
 function image:constructor(pixels)
-	self.data = ""
 	self.pixels = pixels
 	self.width = #pixels[1]
 	self.height = #pixels
-
-	self:encode()
 end
 
-function image:encode_colormap_spec()
-	self.data = self.data
-		.. string.char(0, 0) -- first entry index
-		.. string.char(0, 0) -- number of entries
-		.. string.char(0) -- bits per pixel
-end
+local pixel_depth_by_color_format = {
+	["Y8"] = 8,
+	["A1R5G5B5"] = 16,
+	["B8G8R8"] = 24,
+	["B8G8R8A8"] = 32,
+}
 
-function image:encode_image_spec()
-	self.data = self.data
-		.. string.char(0, 0) -- X-origin
-		.. string.char(0, 0) -- Y-origin
-		.. string.char(self.width  % 256, math.floor(self.width  / 256)) -- width
-		.. string.char(self.height % 256, math.floor(self.height / 256)) -- height
-		.. string.char(24) -- pixel depth (RGB = 3 bytes = 24 bits)
-		.. string.char(0) -- image descriptor
-end
-
-function image:encode_header()
-	self.data = self.data
-		.. string.char(0) -- image id
-		.. string.char(0) -- color map type
-		.. string.char(10) -- image type (RLE RGB = 10)
-	self:encode_colormap_spec() -- color map specification
-	self:encode_image_spec() -- image specification
-end
-
-function image:encode_data()
-	local current_pixel = ''
-	local previous_pixel = ''
-	local count = 1
-	local packets = {}
-	local rle_packet = ''
+function image:encode_colormap_spec(properties)
+	local colormap = properties.colormap
+	local colormap_pixel_depth = 0
+	if 0 ~= #colormap then
+		colormap_pixel_depth = pixel_depth_by_color_format[
+			properties.color_format
+		]
+		-- ensure that each pixel references a legal colormap entry
 		for _, row in ipairs(self.pixels) do
 			for _, pixel in ipairs(row) do
-			current_pixel = string.char(pixel[3], pixel[2], pixel[1])
-			if current_pixel ~= previous_pixel or count == 128 then
+				local colormap_index = pixel[1]
+				if colormap_index >= #colormap then
+					error(
+						"colormap index " .. colormap_index ..
+						" not in colormap of size " .. #colormap
+					)
+				end
+			end
+		end
+	end
+	local colormap_spec =
+		string.char(0, 0) .. -- first entry index
+		string.char(#colormap % 256, math.floor(#colormap / 256)) .. -- number of entries
+		string.char(colormap_pixel_depth) -- bits per pixel
+	self.data = self.data .. colormap_spec
+end
+
+function image:encode_image_spec(properties)
+	local color_format = properties.color_format
+	assert(
+		"Y8" == color_format or -- (8 bit grayscale = 1 byte = 8 bits)
+		"A1R5G5B5" == color_format or -- (A1R5G5B5 = 2 bytes = 16 bits)
+		"B8G8R8" == color_format or -- (B8G8R8 = 3 bytes = 24 bits)
+		"B8G8R8A8" == color_format -- (B8G8R8A8 = 4 bytes = 32 bits)
+	)
+	local scanline_order = properties.scanline_order
+	assert (
+		"bottom-top" == scanline_order or
+		"top-bottom" == scanline_order
+	)
+	local pixel_depth
+	if 0 ~= #properties.colormap then
+		pixel_depth = self.pixel_depth
+	else
+		pixel_depth = pixel_depth_by_color_format[color_format]
+	end
+	assert( nil ~= pixel_depth)
+	-- the origin is the bottom left corner of the image (always)
+	local x_origin_lo = 0
+	local x_origin_hi = 0
+	local y_origin_lo = 0
+	local y_origin_hi = 0
+	local image_descriptor = 0 -- equal to bottom-top scanline order
+	local width_lo = self.width % 256
+	local width_hi = math.floor(self.width  / 256)
+	local height_lo = self.height % 256
+	local height_hi = math.floor(self.height / 256)
+	if "top-bottom" == scanline_order then
+		image_descriptor = 32
+		y_origin_lo = height_lo
+		y_origin_hi = height_hi
+	end
+	self.data = self.data .. string.char (
+		x_origin_lo, x_origin_hi,
+		y_origin_lo, y_origin_hi,
+		width_lo, width_hi,
+		height_lo, height_hi,
+		pixel_depth,
+		image_descriptor
+	)
+end
+
+function image:encode_colormap(properties)
+	local colormap = properties.colormap
+	if 0 == #colormap then
+		return
+	end
+	local color_format = properties.color_format
+	assert (
+		"A1R5G5B5" == color_format or
+		"B8G8R8" == color_format or
+		"B8G8R8A8" == color_format
+	)
+	local colors = {}
+	if "A1R5G5B5" == color_format then
+		-- Sample depth rescaling is done according to the algorithm presented in:
+		-- <https://www.w3.org/TR/2003/REC-PNG-20031110/#13Sample-depth-rescaling>
+		local max_sample_in = math.pow(2, 8) - 1
+		local max_sample_out = math.pow(2, 5) - 1
+		for i = 1,#colormap,1 do
+			local color = colormap[i]
+			local colorword = 32768 +
+				((math.floor((color[1] * max_sample_out / max_sample_in) + 0.5)) * 1024) +
+				((math.floor((color[2] * max_sample_out / max_sample_in) + 0.5)) * 32) +
+				((math.floor((color[3] * max_sample_out / max_sample_in) + 0.5)) * 1)
+			local color_bytes = string.char(
+				colorword % 256,
+				math.floor(colorword / 256)
+			)
+			colors[#colors + 1] = color_bytes
+		end
+	elseif "B8G8R8" == color_format then
+		for i = 1,#colormap,1 do
+			local color = colormap[i]
+			local color_bytes = string.char(
+				color[3], -- B
+				color[2], -- G
+				color[1]  -- R
+			)
+			colors[#colors + 1] = color_bytes
+		end
+	elseif "B8G8R8A8" == color_format then
+		for i = 1,#colormap,1 do
+			local color = colormap[i]
+			local color_bytes = string.char(
+				color[3], -- B
+				color[2], -- G
+				color[1], -- R
+				color[4]  -- A
+			)
+			colors[#colors + 1] = color_bytes
+		end
+	end
+	assert( 0 ~= #colors )
+	self.data = self.data .. table.concat(colors)
+end
+
+function image:encode_header(properties)
+	local color_format = properties.color_format
+	local colormap = properties.colormap
+	local compression = properties.compression
+	local colormap_type
+	local image_type
+	if "Y8" == color_format and "RAW" == compression then
+		colormap_type = 0
+		image_type = 3 -- grayscale
+	elseif (
+		"A1R5G5B5" == color_format or
+		"B8G8R8" == color_format or
+		"B8G8R8A8" == color_format
+	) then
+		if "RAW" == compression then
+			if 0 ~= #colormap then
+				colormap_type = 1
+				image_type = 1 -- colormapped RGB(A)
+			else
+				colormap_type = 0
+				image_type = 2 -- RAW RGB(A)
+			end
+		elseif "RLE" == compression then
+			colormap_type = 0
+			image_type = 10 -- RLE RGB
+		end
+	end
+	assert( nil ~= colormap_type )
+	assert( nil ~= image_type )
+	self.data = self.data
+		.. string.char(0) -- image id
+		.. string.char(colormap_type)
+		.. string.char(image_type)
+	self:encode_colormap_spec(properties) -- color map specification
+	self:encode_image_spec(properties) -- image specification
+	self:encode_colormap(properties)
+end
+
+function image:encode_data(properties)
+	local color_format = properties.color_format
+	local colormap = properties.colormap
+	local compression = properties.compression
+
+	local data_length_before = #self.data
+	if "Y8" == color_format and "RAW" == compression then
+		if 8 == self.pixel_depth then
+			self:encode_data_Y8_as_Y8_raw()
+		elseif 24 == self.pixel_depth then
+			self:encode_data_R8G8B8_as_Y8_raw()
+		end
+	elseif "A1R5G5B5" == color_format then
+		if 0 ~= #colormap then
+			if "RAW" == compression then
+				if 8 == self.pixel_depth then
+					self:encode_data_Y8_as_Y8_raw()
+				end
+			end
+		else
+			if "RAW" == compression then
+				self:encode_data_R8G8B8_as_A1R5G5B5_raw()
+			elseif "RLE" == compression then
+				self:encode_data_R8G8B8_as_A1R5G5B5_rle()
+			end
+		end
+	elseif "B8G8R8" == color_format then
+		if 0 ~= #colormap then
+			if "RAW" == compression then
+				if 8 == self.pixel_depth then
+					self:encode_data_Y8_as_Y8_raw()
+				end
+			end
+		else
+			if "RAW" == compression then
+				self:encode_data_R8G8B8_as_B8G8R8_raw()
+			elseif "RLE" == compression then
+			   self:encode_data_R8G8B8_as_B8G8R8_rle()
+			end
+		end
+	elseif "B8G8R8A8" == color_format then
+		if 0 ~= #colormap then
+			if "RAW" == compression then
+				if 8 == self.pixel_depth then
+					self:encode_data_Y8_as_Y8_raw()
+				end
+			end
+		else
+			if "RAW" == compression then
+				self:encode_data_R8G8B8A8_as_B8G8R8A8_raw()
+			elseif "RLE" == compression then
+				self:encode_data_R8G8B8A8_as_B8G8R8A8_rle()
+			end
+		end
+	end
+	local data_length_after = #self.data
+	assert(
+		data_length_after ~= data_length_before,
+		"No data encoded for color format: " .. color_format
+	)
+end
+
+function image:encode_data_Y8_as_Y8_raw()
+	assert(8 == self.pixel_depth)
+	local raw_pixels = {}
+	for _, row in ipairs(self.pixels) do
+		for _, pixel in ipairs(row) do
+			local raw_pixel = string.char(pixel[1])
+			raw_pixels[#raw_pixels + 1] = raw_pixel
+		end
+	end
+	self.data = self.data .. table.concat(raw_pixels)
+end
+
+function image:encode_data_R8G8B8_as_Y8_raw()
+	assert(24 == self.pixel_depth)
+	local raw_pixels = {}
+	for _, row in ipairs(self.pixels) do
+		for _, pixel in ipairs(row) do
+			-- the HSP RGB to brightness formula is
+			-- sqrt( 0.299 r² + .587 g² + .114 b² )
+			-- see <https://alienryderflex.com/hsp.html>
+			local gray = math.floor(
+				math.sqrt(
+					0.299 * pixel[1]^2 +
+					0.587 * pixel[2]^2 +
+					0.114 * pixel[3]^2
+				) + 0.5
+			)
+			local raw_pixel = string.char(gray)
+			raw_pixels[#raw_pixels + 1] = raw_pixel
+		end
+	end
+	self.data = self.data .. table.concat(raw_pixels)
+end
+
+function image:encode_data_R8G8B8_as_A1R5G5B5_raw()
+	assert(24 == self.pixel_depth)
+	local raw_pixels = {}
+	-- Sample depth rescaling is done according to the algorithm presented in:
+	-- <https://www.w3.org/TR/2003/REC-PNG-20031110/#13Sample-depth-rescaling>
+	local max_sample_in = math.pow(2, 8) - 1
+	local max_sample_out = math.pow(2, 5) - 1
+	for _, row in ipairs(self.pixels) do
+		for _, pixel in ipairs(row) do
+			local colorword = 32768 +
+				((math.floor((pixel[1] * max_sample_out / max_sample_in) + 0.5)) * 1024) +
+				((math.floor((pixel[2] * max_sample_out / max_sample_in) + 0.5)) * 32) +
+				((math.floor((pixel[3] * max_sample_out / max_sample_in) + 0.5)) * 1)
+			local raw_pixel = string.char(colorword % 256, math.floor(colorword / 256))
+			raw_pixels[#raw_pixels + 1] = raw_pixel
+		end
+	end
+	self.data = self.data .. table.concat(raw_pixels)
+end
+
+function image:encode_data_R8G8B8_as_A1R5G5B5_rle()
+	assert(24 == self.pixel_depth)
+	local colorword = nil
+	local previous_r = nil
+	local previous_g = nil
+	local previous_b = nil
+	local raw_pixel = ''
+	local raw_pixels = {}
+	local count = 1
+	local packets = {}
+	local raw_packet = ''
+	local rle_packet = ''
+	-- Sample depth rescaling is done according to the algorithm presented in:
+	-- <https://www.w3.org/TR/2003/REC-PNG-20031110/#13Sample-depth-rescaling>
+	local max_sample_in = math.pow(2, 8) - 1
+	local max_sample_out = math.pow(2, 5) - 1
+	for _, row in ipairs(self.pixels) do
+		for _, pixel in ipairs(row) do
+			if pixel[1] ~= previous_r or pixel[2] ~= previous_g or pixel[3] ~= previous_b or count == 128 then
+				if nil ~= previous_r then
+					colorword = 32768 +
+						((math.floor((previous_r * max_sample_out / max_sample_in) + 0.5)) * 1024) +
+						((math.floor((previous_g * max_sample_out / max_sample_in) + 0.5)) * 32) +
+						((math.floor((previous_b * max_sample_out / max_sample_in) + 0.5)) * 1)
+					if 1 == count then
+						-- remember pixel verbatim for raw encoding
+						raw_pixel = string.char(colorword % 256, math.floor(colorword / 256))
+						raw_pixels[#raw_pixels + 1] = raw_pixel
+						if 128 == #raw_pixels then
+							raw_packet = string.char(#raw_pixels - 1)
+							packets[#packets + 1] = raw_packet
+							for i=1, #raw_pixels do
+								packets[#packets +1] = raw_pixels[i]
+							end
+							raw_pixels = {}
+						end
+					else
+						-- encode raw pixels, if any
+						if #raw_pixels > 0 then
+							raw_packet = string.char(#raw_pixels - 1)
+							packets[#packets + 1] = raw_packet
+							for i=1, #raw_pixels do
+								packets[#packets +1] = raw_pixels[i]
+							end
+							raw_pixels = {}
+						end
+						-- RLE encoding
+						rle_packet = string.char(128 + count - 1, colorword % 256, math.floor(colorword / 256))
 						packets[#packets +1] = rle_packet
+					end
+				end
 				count = 1
-				previous_pixel = current_pixel
+				previous_r = pixel[1]
+				previous_g = pixel[2]
+				previous_b = pixel[3]
 			else
 				count = count + 1
 			end
-			rle_packet = string.char(128 + count - 1) .. current_pixel
 		end
 	end
+	colorword = 32768 +
+		((math.floor((previous_r * max_sample_out / max_sample_in) + 0.5)) * 1024) +
+		((math.floor((previous_g * max_sample_out / max_sample_in) + 0.5)) * 32) +
+		((math.floor((previous_b * max_sample_out / max_sample_in) + 0.5)) * 1)
+	if 1 == count then
+		raw_pixel = string.char(colorword % 256, math.floor(colorword / 256))
+		raw_pixels[#raw_pixels + 1] = raw_pixel
+		raw_packet = string.char(#raw_pixels - 1)
+		packets[#packets + 1] = raw_packet
+		for i=1, #raw_pixels do
+			packets[#packets +1] = raw_pixels[i]
+		end
+		raw_pixels = {}
+	else
+		-- encode raw pixels, if any
+		if #raw_pixels > 0 then
+			raw_packet = string.char(#raw_pixels - 1)
+			packets[#packets + 1] = raw_packet
+			for i=1, #raw_pixels do
+				packets[#packets +1] = raw_pixels[i]
+			end
+			raw_pixels = {}
+		end
+		-- RLE encoding
+		rle_packet = string.char(128 + count - 1, colorword % 256, math.floor(colorword / 256))
 		packets[#packets +1] = rle_packet
+	end
+	self.data = self.data .. table.concat(packets)
+end
+
+function image:encode_data_R8G8B8_as_B8G8R8_raw()
+	assert(24 == self.pixel_depth)
+	local raw_pixels = {}
+	for _, row in ipairs(self.pixels) do
+		for _, pixel in ipairs(row) do
+			local raw_pixel = string.char(pixel[3], pixel[2], pixel[1])
+			raw_pixels[#raw_pixels + 1] = raw_pixel
+		end
+	end
+	self.data = self.data .. table.concat(raw_pixels)
+end
+
+function image:encode_data_R8G8B8_as_B8G8R8_rle()
+	assert(24 == self.pixel_depth)
+	local previous_r = nil
+	local previous_g = nil
+	local previous_b = nil
+	local raw_pixel = ''
+	local raw_pixels = {}
+	local count = 1
+	local packets = {}
+	local raw_packet = ''
+	local rle_packet = ''
+	for _, row in ipairs(self.pixels) do
+		for _, pixel in ipairs(row) do
+			if pixel[1] ~= previous_r or pixel[2] ~= previous_g or pixel[3] ~= previous_b or count == 128 then
+				if nil ~= previous_r then
+					if 1 == count then
+						-- remember pixel verbatim for raw encoding
+						raw_pixel = string.char(previous_b, previous_g, previous_r)
+						raw_pixels[#raw_pixels + 1] = raw_pixel
+						if 128 == #raw_pixels then
+							raw_packet = string.char(#raw_pixels - 1)
+							packets[#packets + 1] = raw_packet
+							for i=1, #raw_pixels do
+								packets[#packets +1] = raw_pixels[i]
+							end
+							raw_pixels = {}
+						end
+					else
+						-- encode raw pixels, if any
+						if #raw_pixels > 0 then
+							raw_packet = string.char(#raw_pixels - 1)
+							packets[#packets + 1] = raw_packet
+							for i=1, #raw_pixels do
+								packets[#packets +1] = raw_pixels[i]
+							end
+							raw_pixels = {}
+						end
+						-- RLE encoding
+						rle_packet = string.char(128 + count - 1, previous_b, previous_g, previous_r)
+						packets[#packets +1] = rle_packet
+					end
+				end
+				count = 1
+				previous_r = pixel[1]
+				previous_g = pixel[2]
+				previous_b = pixel[3]
+			else
+				count = count + 1
+			end
+		end
+	end
+	if 1 == count then
+		raw_pixel = string.char(previous_b, previous_g, previous_r)
+		raw_pixels[#raw_pixels + 1] = raw_pixel
+		raw_packet = string.char(#raw_pixels - 1)
+		packets[#packets + 1] = raw_packet
+		for i=1, #raw_pixels do
+			packets[#packets +1] = raw_pixels[i]
+		end
+		raw_pixels = {}
+	else
+		-- encode raw pixels, if any
+		if #raw_pixels > 0 then
+			raw_packet = string.char(#raw_pixels - 1)
+			packets[#packets + 1] = raw_packet
+			for i=1, #raw_pixels do
+				packets[#packets +1] = raw_pixels[i]
+			end
+			raw_pixels = {}
+		end
+		-- RLE encoding
+		rle_packet = string.char(128 + count - 1, previous_b, previous_g, previous_r)
+		packets[#packets +1] = rle_packet
+	end
+	self.data = self.data .. table.concat(packets)
+end
+
+function image:encode_data_R8G8B8A8_as_B8G8R8A8_raw()
+	assert(32 == self.pixel_depth)
+	local raw_pixels = {}
+	for _, row in ipairs(self.pixels) do
+		for _, pixel in ipairs(row) do
+			local raw_pixel = string.char(pixel[3], pixel[2], pixel[1], pixel[4])
+			raw_pixels[#raw_pixels + 1] = raw_pixel
+		end
+	end
+	self.data = self.data .. table.concat(raw_pixels)
+end
+
+function image:encode_data_R8G8B8A8_as_B8G8R8A8_rle()
+	assert(32 == self.pixel_depth)
+	local previous_r = nil
+	local previous_g = nil
+	local previous_b = nil
+	local previous_a = nil
+	local raw_pixel = ''
+	local raw_pixels = {}
+	local count = 1
+	local packets = {}
+	local raw_packet = ''
+	local rle_packet = ''
+	for _, row in ipairs(self.pixels) do
+		for _, pixel in ipairs(row) do
+			if pixel[1] ~= previous_r or pixel[2] ~= previous_g or pixel[3] ~= previous_b or pixel[4] ~= previous_a or count == 128 then
+				if nil ~= previous_r then
+					if 1 == count then
+						-- remember pixel verbatim for raw encoding
+						raw_pixel = string.char(previous_b, previous_g, previous_r, previous_a)
+						raw_pixels[#raw_pixels + 1] = raw_pixel
+						if 128 == #raw_pixels then
+							raw_packet = string.char(#raw_pixels - 1)
+							packets[#packets + 1] = raw_packet
+							for i=1, #raw_pixels do
+								packets[#packets +1] = raw_pixels[i]
+							end
+							raw_pixels = {}
+						end
+					else
+						-- encode raw pixels, if any
+						if #raw_pixels > 0 then
+							raw_packet = string.char(#raw_pixels - 1)
+							packets[#packets + 1] = raw_packet
+							for i=1, #raw_pixels do
+								packets[#packets +1] = raw_pixels[i]
+							end
+							raw_pixels = {}
+						end
+						-- RLE encoding
+						rle_packet = string.char(128 + count - 1, previous_b, previous_g, previous_r, previous_a)
+						packets[#packets +1] = rle_packet
+					end
+				end
+				count = 1
+				previous_r = pixel[1]
+				previous_g = pixel[2]
+				previous_b = pixel[3]
+				previous_a = pixel[4]
+			else
+				count = count + 1
+			end
+		end
+	end
+	if 1 == count then
+		raw_pixel = string.char(previous_b, previous_g, previous_r, previous_a)
+		raw_pixels[#raw_pixels + 1] = raw_pixel
+		raw_packet = string.char(#raw_pixels - 1)
+		packets[#packets + 1] = raw_packet
+		for i=1, #raw_pixels do
+			packets[#packets +1] = raw_pixels[i]
+		end
+		raw_pixels = {}
+	else
+		-- encode raw pixels, if any
+		if #raw_pixels > 0 then
+			raw_packet = string.char(#raw_pixels - 1)
+			packets[#packets + 1] = raw_packet
+			for i=1, #raw_pixels do
+				packets[#packets +1] = raw_pixels[i]
+			end
+			raw_pixels = {}
+		end
+		-- RLE encoding
+		rle_packet = string.char(128 + count - 1, previous_b, previous_g, previous_r, previous_a)
+		packets[#packets +1] = rle_packet
+	end
 	self.data = self.data .. table.concat(packets)
 end
 
@@ -75,15 +581,45 @@ function image:encode_footer()
 		.. string.char(0)
 end
 
-function image:encode()
-	self:encode_header() -- header
+function image:encode(properties)
+	local properties = properties or {}
+	properties.colormap = properties.colormap or {}
+	properties.compression = properties.compression or "RAW"
+        properties.scanline_order = properties.scanline_order or "bottom-top"
+
+	self.pixel_depth = #self.pixels[1][1] * 8
+
+	local color_format_defaults_by_pixel_depth = {
+		[8] = "Y8",
+		[24] = "B8G8R8",
+		[32] = "B8G8R8A8",
+	}
+	if nil == properties.color_format then
+		if 0 ~= #properties.colormap then
+			properties.color_format =
+				color_format_defaults_by_pixel_depth[
+				#properties.colormap[1] * 8
+				]
+		else
+			properties.color_format =
+				color_format_defaults_by_pixel_depth[
+					self.pixel_depth
+				]
+		end
+	end
+	assert( nil ~= properties.color_format )
+
+	self.data = ""
+	self:encode_header(properties) -- header
 	-- no color map and image id data
-	self:encode_data() -- encode data
+	self:encode_data(properties) -- encode data
 	-- no extension or developer area
 	self:encode_footer() -- footer
 end
 
-function image:save(filename)
+function image:save(filename, properties)
+	self:encode(properties)
+
 	local f = assert(io.open(filename, "wb"))
 	f:write(self.data)
 	f:close()

mods/CORE/tga_encoder/logo.lua

@@ -0,0 +1,51 @@
+dofile("init.lua")
+
+local colormap = {
+	{   0,   0,   0 }, -- black
+	{ 255, 255, 255 }, -- white
+	{ 255,   0,   0 }, -- red
+	{   0, 255,   0 }, -- green
+	{   0,   0, 255 }, -- blue
+}
+
+local _ = { 0 }
+local W = { 1 }
+local R = { 2 }
+local G = { 3 }
+local B = { 4 }
+
+local pixels_tiny = {
+	{ W, W, W, W, W, W, W, W, W, W, W, W, },
+	{ W, _, _, _, _, _, _, _, _, _, _, W, },
+	{ W, _, _, _, _, _, _, B, _, B, _, W, },
+	{ W, _, _, _, _, _, _, B, B, B, _, W, },
+	{ W, _, _, _, G, G, G, B, _, B, _, W, },
+	{ W, _, _, _, G, _, G, B, B, B, _, W, },
+	{ W, _, _, R, G, _, _, _, _, _, _, W, },
+	{ W, _, _, R, G, G, G, _, _, _, _, W, },
+	{ W, _, _, R, _, _, _, _, _, _, _, W, },
+	{ W, _, R, R, R, _, _, _, _, _, _, W, },
+	{ W, _, _, _, _, _, _, _, _, _, _, W, },
+	{ W, W, W, W, W, W, W, W, W, W, W, W, },
+}
+
+local pixels_huge = {}
+
+local size_tiny = #pixels_tiny
+local size_huge = 1200
+local scale = size_huge / size_tiny
+
+for x_huge = 1,size_huge,1 do
+	local x_tiny = math.ceil( x_huge / scale )
+	for z_huge = 1,size_huge,1 do
+		local z_tiny = math.ceil( z_huge / scale )
+		if nil == pixels_huge[z_huge] then
+		   pixels_huge[z_huge] = {}
+		end
+		pixels_huge[z_huge][x_huge] = pixels_tiny[z_tiny][x_tiny]
+	end
+end
+
+tga_encoder.image(pixels_tiny):save("logo_tiny.tga", {colormap=colormap})
+tga_encoder.image(pixels_huge):save("logo_huge.tga", {colormap=colormap})
+

mods/CORE/tga_encoder/mod.conf

@@ -1,3 +1,2 @@
 name = tga_encoder
-author = Fleckenstein
 description = A TGA Encoder written in Lua without the use of external Libraries.

mods/CORE/tga_encoder/tools/generate_test_textures.lua

@@ -0,0 +1,180 @@
+#!/usr/bin/env lua5.1
+dofile("../init.lua")
+
+local _ = { 0 }
+local R = { 1 }
+local G = { 2 }
+local B = { 3 }
+
+local pixels_colormapped_bt = {
+	{ _, _, _, _, _, B, _, B, },
+	{ _, _, _, _, _, B, B, B, },
+	{ _, _, G, G, G, B, _, B, },
+	{ _, _, G, _, G, B, B, B, },
+	{ _, R, G, _, _, _, _, _, },
+	{ _, R, G, G, G, _, _, _, },
+	{ _, R, _, _, _, _, _, _, },
+	{ R, R, R, _, _, _, _, _, },
+}
+
+local pixels_colormapped_tb = {
+	{ R, R, R, _, _, _, _, _, },
+	{ _, R, _, _, _, _, _, _, },
+	{ _, R, G, G, G, _, _, _, },
+	{ _, R, G, _, _, _, _, _, },
+	{ _, _, G, _, G, B, B, B, },
+	{ _, _, G, G, G, B, _, B, },
+	{ _, _, _, _, _, B, B, B, },
+	{ _, _, _, _, _, B, _, B, },
+}
+
+image_colormapped_bt = tga_encoder.image(pixels_colormapped_bt)
+image_colormapped_tb = tga_encoder.image(pixels_colormapped_tb)
+
+colormap_32bpp = {
+	{    0,   0,   0, 128 },
+	{ 255,    0,   0, 255 },
+	{    0, 255,   0, 255 },
+	{    0,   0, 255, 255 },
+}
+image_colormapped_bt:save(
+	"type1_32bpp_bt.tga",
+	{ colormap = colormap_32bpp, color_format = "B8G8R8A8", scanline_order = "bottom-top" }
+)
+image_colormapped_tb:save(
+	"type1_32bpp_tb.tga",
+	{ colormap = colormap_32bpp, color_format = "B8G8R8A8", scanline_order = "top-bottom" }
+)
+image_colormapped_bt:save(
+	"type1_16bpp_bt.tga",
+	{ colormap = colormap_32bpp, color_format = "A1R5G5B5", scanline_order = "bottom-top" }
+)
+image_colormapped_tb:save(
+	"type1_16bpp_tb.tga",
+	{ colormap = colormap_32bpp, color_format = "A1R5G5B5", scanline_order = "top-bottom" }
+)
+
+colormap_24bpp = {
+	{    0,   0,   0 },
+	{ 255,    0,   0 },
+	{    0, 255,   0 },
+	{    0,   0, 255 },
+}
+image_colormapped_bt:save(
+	"type1_24bpp_bt.tga",
+	{ colormap = colormap_32bpp, color_format = "B8G8R8", scanline_order = "bottom-top" }
+)
+image_colormapped_tb:save(
+	"type1_24bpp_tb.tga",
+	{ colormap = colormap_32bpp, color_format = "B8G8R8", scanline_order = "top-bottom" }
+)
+
+local _ = {    0,   0,   0, 128 }
+local R = { 255,    0,   0, 255 }
+local G = {    0, 255,   0, 255 }
+local B = {    0,   0, 255, 255 }
+
+local pixels_rgba_bt = {
+	{ _, _, _, _, _, B, _, B, },
+	{ _, _, _, _, _, B, B, B, },
+	{ _, _, G, G, G, B, _, B, },
+	{ _, _, G, _, G, B, B, B, },
+	{ _, R, G, _, _, _, _, _, },
+	{ _, R, G, G, G, _, _, _, },
+	{ _, R, _, _, _, _, _, _, },
+	{ R, R, R, _, _, _, _, _, },
+}
+
+local pixels_rgba_tb = {
+	{ R, R, R, _, _, _, _, _, },
+	{ _, R, _, _, _, _, _, _, },
+	{ _, R, G, G, G, _, _, _, },
+	{ _, R, G, _, _, _, _, _, },
+	{ _, _, G, _, G, B, B, B, },
+	{ _, _, G, G, G, B, _, B, },
+	{ _, _, _, _, _, B, B, B, },
+	{ _, _, _, _, _, B, _, B, },
+}
+
+image_rgba_bt = tga_encoder.image(pixels_rgba_bt)
+image_rgba_tb = tga_encoder.image(pixels_rgba_tb)
+
+image_rgba_bt:save(
+	"type2_32bpp_bt.tga",
+	{ color_format="B8G8R8A8", compression="RAW", scanline_order = "bottom-top" }
+)
+image_rgba_tb:save(
+	"type2_32bpp_tb.tga",
+	{ color_format="B8G8R8A8", compression="RAW", scanline_order = "top-bottom" }
+)
+image_rgba_bt:save(
+	"type10_32bpp_bt.tga",
+	{ color_format="B8G8R8A8", compression="RLE", scanline_order = "bottom-top" }
+)
+image_rgba_tb:save(
+	"type10_32bpp_tb.tga",
+	{ color_format="B8G8R8A8", compression="RLE", scanline_order = "top-bottom" }
+)
+
+local _ = {    0,   0,   0 }
+local R = { 255,    0,   0 }
+local G = {    0, 255,   0 }
+local B = {    0,   0, 255 }
+
+local pixels_rgb_bt = {
+	{ _, _, _, _, _, B, _, B, },
+	{ _, _, _, _, _, B, B, B, },
+	{ _, _, G, G, G, B, _, B, },
+	{ _, _, G, _, G, B, B, B, },
+	{ _, R, G, _, _, _, _, _, },
+	{ _, R, G, G, G, _, _, _, },
+	{ _, R, _, _, _, _, _, _, },
+	{ R, R, R, _, _, _, _, _, },
+}
+
+local pixels_rgb_tb = {
+	{ R, R, R, _, _, _, _, _, },
+	{ _, R, _, _, _, _, _, _, },
+	{ _, R, G, G, G, _, _, _, },
+	{ _, R, G, _, _, _, _, _, },
+	{ _, _, G, _, G, B, B, B, },
+	{ _, _, G, G, G, B, _, B, },
+	{ _, _, _, _, _, B, B, B, },
+	{ _, _, _, _, _, B, _, B, },
+}
+
+image_rgb_bt = tga_encoder.image(pixels_rgb_bt)
+image_rgb_tb = tga_encoder.image(pixels_rgb_tb)
+
+image_rgb_bt:save(
+	"type2_24bpp_bt.tga",
+	{ color_format="B8G8R8", compression="RAW", scanline_order = "bottom-top" }
+)
+image_rgb_tb:save(
+	"type2_24bpp_tb.tga",
+	{ color_format="B8G8R8", compression="RAW", scanline_order = "top-bottom" }
+)
+image_rgb_bt:save(
+	"type10_24bpp_bt.tga",
+	{ color_format="B8G8R8", compression="RLE", scanline_order = "bottom-top" }
+)
+image_rgb_tb:save(
+	"type10_24bpp_tb.tga",
+	{ color_format="B8G8R8", compression="RLE", scanline_order = "top-bottom" }
+)
+image_rgb_bt:save(
+	"type2_16bpp_bt.tga",
+	{ color_format="A1R5G5B5", compression="RAW", scanline_order = "bottom-top" }
+)
+image_rgb_tb:save(
+	"type2_16bpp_tb.tga",
+	{ color_format="A1R5G5B5", compression="RAW", scanline_order = "top-bottom" }
+)
+image_rgb_bt:save(
+	"type10_16bpp_bt.tga",
+	{ color_format="A1R5G5B5", compression="RLE", scanline_order = "bottom-top" }
+)
+image_rgb_tb:save(
+	"type10_16bpp_tb.tga",
+	{ color_format="A1R5G5B5", compression="RLE", scanline_order = "top-bottom" }
+)

mods/ENTITIES/mcl_minecarts/functions.lua

@@ -135,3 +135,33 @@ function mcl_minecarts:get_rail_direction(pos_, dir, ctrl, old_switch, railtype)
 	end
 	return {x=0, y=0, z=0}
 end
+
+local plane_adjacents = {
+	vector.new(-1,0,0),
+	vector.new(1,0,0),
+	vector.new(0,0,-1),
+	vector.new(0,0,1),
+}
+
+function mcl_minecarts:get_start_direction(pos)
+	local dir
+	local i = 0
+	while (not dir and i < #plane_adjacents) do
+		i = i+1
+		local node = minetest.get_node_or_nil(vector.add(pos, plane_adjacents[i]))
+		if node ~= nil
+		and minetest.get_item_group(node.name, "rail") == 0
+		and minetest.get_item_group(node.name, "solid") == 1
+		and minetest.get_item_group(node.name, "opaque") == 1
+		then
+			dir = mcl_minecarts:check_front_up_down(pos, vector.multiply(plane_adjacents[i], -1), true)
+		end
+	end
+	return dir
+end
+
+function mcl_minecarts:set_velocity(obj, dir, factor)
+	obj._velocity = vector.multiply(dir, factor or 3)
+	obj._old_pos = nil
+	obj._punched = true
+end

mods/ENTITIES/mcl_minecarts/init.lua

@@ -241,9 +241,7 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
 			if vector.equals(cart_dir, {x=0, y=0, z=0}) then
 				return
 			end
-			self._velocity = vector.multiply(cart_dir, 3)
-			self._old_pos = nil
-			self._punched = true
+			mcl_minecarts:set_velocity(self, cart_dir)
 			return
 		end
 
@@ -300,9 +298,7 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
 		time_from_last_punch = math.min(time_from_last_punch, tool_capabilities.full_punch_interval)
 		local f = 3 * (time_from_last_punch / tool_capabilities.full_punch_interval)
 
-		self._velocity = vector.multiply(cart_dir, f)
-		self._old_pos = nil
-		self._punched = true
+		mcl_minecarts:set_velocity(self, cart_dir, f)
 	end
 
 	cart.on_activate_by_rail = on_activate_by_rail
@@ -470,7 +466,7 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
 			return
 		end
 
-		local dir, last_switch = nil, nil
+		local dir, last_switch, restart_pos = nil, nil, nil
 		if not pos then
 			pos = self.object:get_pos()
 		end
@@ -497,6 +493,9 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
 				minetest.swap_node(rou_pos, newnode)
 				mesecon.receptor_on(rou_pos)
 			end
+			if node.name == "mcl_minecarts:golden_rail_on" then
+				restart_pos = rou_pos
+			end
 			if node_old.name == "mcl_minecarts:detector_rail_on" then
 				local newnode = {name="mcl_minecarts:detector_rail", param2 = node_old.param2}
 				minetest.swap_node(rou_old, newnode)
@@ -647,6 +646,14 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
 		if update.pos then
 			self.object:set_pos(pos)
 		end
+		
+		-- stopped on "mcl_minecarts:golden_rail_on"
+		if vector.equals(vel, {x=0, y=0, z=0}) and restart_pos then
+			local dir = mcl_minecarts:get_start_direction(restart_pos)
+			if dir then
+				mcl_minecarts:set_velocity(self, dir)
+			end
+		end
 	end
 
 	function cart:get_staticdata()
@@ -687,7 +694,15 @@ function mcl_minecarts.place_minecart(itemstack, pointed_thing, placer)
 	if le then
 		le._railtype = railtype
 	end
-	local cart_dir = mcl_minecarts:get_rail_direction(railpos, {x=1, y=0, z=0}, nil, nil, railtype)
+	local cart_dir
+	if node.name == "mcl_minecarts:golden_rail_on" then
+		cart_dir = mcl_minecarts:get_start_direction(railpos)
+	end
+	if cart_dir then
+		mcl_minecarts:set_velocity(le, cart_dir)
+	else
+		cart_dir = mcl_minecarts:get_rail_direction(railpos, {x=1, y=0, z=0}, nil, nil, railtype)
+	end
 	cart:set_yaw(minetest.dir_to_yaw(cart_dir))
 
 	local pname = ""

mods/ENTITIES/mcl_minecarts/rails.lua

@@ -112,6 +112,22 @@ register_rail("mcl_minecarts:golden_rail_on",
 				onstate = "mcl_minecarts:golden_rail_on",
 				rules = rail_rules_long,
 			},
+			effector = {
+				action_on = function(pos, node)
+					local dir = mcl_minecarts:get_start_direction(pos)
+					if not dir then return end
+					local objs = minetest.get_objects_inside_radius(pos, 1)
+					for _, o in pairs(objs) do
+						local l = o:get_luaentity()
+						local v = o:get_velocity()
+						if l and string.sub(l.name, 1, 14) == "mcl_minecarts:"
+						and v and vector.equals(v, vector.zero())
+						then
+							mcl_minecarts:set_velocity(l, dir)
+						end
+					end
+end,
+			},
 		},
 		drop = "mcl_minecarts:golden_rail",
 	},

mods/ENTITIES/mobs_mc/skeleton+stray.lua

@@ -44,6 +44,13 @@ local skeleton = {
 			"mcl_bows_bow_0.png", -- wielded_item
 		}
 	},
+	-- TODO: change random to new api when min minetest version is 5.8
+	sounds = {
+		random = "mobs_mc_skeleton_random.2",
+		death = "mobs_mc_skeleton_death",
+		damage = "mobs_mc_skeleton_hurt",
+		distance = 16,
+	},
 	walk_velocity = 1.2,
 	run_velocity = 2.0,
 	damage = 2,

mods/ENTITIES/mobs_mc/skeleton_wither.lua

@@ -37,7 +37,7 @@ mcl_mobs.register_mob("mobs_mc:witherskeleton", {
 	visual_size = {x=1.2, y=1.2},
 	makes_footstep_sound = true,
 	sounds = {
-		random = "mobs_mc_skeleton_random",
+		random = "mobs_mc_skeleton_random.1",
 		death = "mobs_mc_skeleton_death",
 		damage = "mobs_mc_skeleton_hurt",
 		distance = 16,

mods/ITEMS/mcl_colorblocks/init.lua

@@ -61,9 +61,9 @@ for _, row in ipairs(block.dyes) do
 	local sdesc_gtp = row[4]
 	local sdesc_cp = row[5]
 	local sdesc_c = row[6]
-	local ldesc_hc, ldesc_gt, ldesc_cp, ldesc_c
+	local ldesc_hc, ldesc_gt, ldesc_cp, ldesc_c, ldesc_gtp
 	local create_entry
-	local ename_hc, ename_gt, ename_cp, ename_c
+	local ename_hc, ename_gt, ename_cp, ename_c, ename_gtp
 	local ltt_cp = cp_tt
 	if is_canonical then
 		ldesc_hc = hc_desc

mods/ITEMS/mcl_end/building.lua

@@ -60,32 +60,20 @@ minetest.register_node("mcl_end:purpur_pillar", {
 })
 
 local end_rod_name = "mcl_end:end_rod"
-local end_rod_side_tex = "mcl_end_end_rod_side.png"
 local end_rod_def = {
 	description = S("End Rod"),
 	_doc_items_longdesc = S("End rods are decorative light sources."),
 	tiles = {
-		"mcl_end_end_rod_top.png",
-		"mcl_end_end_rod_bottom.png",
-		end_rod_side_tex,
-		end_rod_side_tex,
-		end_rod_side_tex,
-		end_rod_side_tex,
+		"mcl_end_end_rod.png",
 	},
-	drawtype = "nodebox",
+	drawtype = "mesh",
+	mesh = "mcl_end_rod.obj",
 	is_ground_content = false,
 	paramtype = "light",
 	paramtype2 = "facedir",
 	light_source = minetest.LIGHT_MAX,
 	sunlight_propagates = true,
 	groups = { dig_immediate=3, deco_block=1, destroy_by_lava_flow=1, end_rod=1 },
-	node_box = {
-		type = "fixed",
-		fixed = {
-			{-0.125, -0.5, -0.125, 0.125, -0.4375, 0.125}, -- Base
-			{-0.0625, -0.4375, -0.0625, 0.0625, 0.5, 0.0625}, -- Rod
-		},
-	},
 	selection_box = {
 		type = "fixed",
 		fixed = {
@@ -156,8 +144,7 @@ local colored_end_rods = {
 	{"lime",       S("Lime End Rod"),       	"green"},
 	{"lightblue",  S("Light Blue End Rod"), 	"lightblue"},
 }
-local top_mask = "^[mask:mobs_mc_empty.png\\^[fill\\:2x2\\:7,7\\:white"
-local side_mask = "^[mask:mobs_mc_empty.png\\^[fill\\:16x15\\:0,0\\:white"
+local end_rod_mask = "^[mask:mcl_end_end_rod_mask.png"
 for num, row in ipairs(colored_end_rods) do
 	local name = row[1]
 	local desc = row[2]
@@ -168,16 +155,12 @@ for num, row in ipairs(colored_end_rods) do
 	def._doc_items_create_entry = false
 	local side_tex
 	if name == "pink" then
-		def.tiles[1] = def.tiles[1] .. "^(" .. def.tiles[1] .. top_mask .. "^[multiply:" .. name .. "^[hsl:0:300)"
-		side_tex = end_rod_side_tex .. "^(" .. end_rod_side_tex .. side_mask .. "^[multiply:" .. name .. "^[hsl:0:300)"
+		def.tiles[1] = def.tiles[1] .. "^(" .. def.tiles[1] .. end_rod_mask .. "^[multiply:" .. name .. "^[hsl:0:300)"
 	elseif num > 4 then
-		def.tiles[1] = def.tiles[1] .. "^(" .. def.tiles[1] .. top_mask .. "^[multiply:" .. name .. "^[hsl:0:300^[opacity:120)"
-		side_tex = end_rod_side_tex .. "^(" .. end_rod_side_tex .. side_mask .. "^[multiply:" .. name .. "^[hsl:0:300^[opacity:120)"
+		def.tiles[1] = def.tiles[1] .. "^(" .. def.tiles[1] .. end_rod_mask .. "^[multiply:" .. name .. "^[hsl:0:300^[opacity:120)"
 	else
-		def.tiles[1] = def.tiles[1] .. "^(" .. def.tiles[1] .. top_mask .. "^[multiply:" .. name .. "^[hsl:0:-100^[opacity:170)"
-		side_tex = end_rod_side_tex .. "^(" .. end_rod_side_tex .. side_mask .. "^[multiply:" .. name .. "^[hsl:0:-100^[opacity:170)"
+		def.tiles[1] = def.tiles[1] .. "^(" .. def.tiles[1] .. end_rod_mask .. "^[multiply:" .. name .. "^[hsl:0:-100^[opacity:170)"
 	end
-	for i=3, 6 do def.tiles[i] = side_tex end
 	minetest.register_node(end_rod_name.."_"..name, def)
 	minetest.register_craft({
 		type = "shapeless",

mods/ITEMS/mcl_end/models/mcl_end_rod.obj

@@ -0,0 +1,67 @@
+# Blender 3.6.7
+# www.blender.org
+o Cube
+v 0.125000 -0.437500 -0.125000
+v 0.125000 -0.500000 -0.125000
+v 0.125000 -0.437500 0.125000
+v 0.125000 -0.500000 0.125000
+v -0.125000 -0.437500 -0.125000
+v -0.125000 -0.500000 -0.125000
+v -0.125000 -0.437500 0.125000
+v -0.125000 -0.500000 0.125000
+v -0.062500 -0.437500 0.062500
+v -0.062500 0.500000 0.062500
+v -0.062500 -0.437500 -0.062500
+v -0.062500 0.500000 -0.062500
+v 0.062500 -0.437500 0.062500
+v 0.062500 0.500000 0.062500
+v 0.062500 -0.437500 -0.062500
+v 0.062500 0.500000 -0.062500
+vn -0.0000 1.0000 -0.0000
+vn -0.0000 -0.0000 1.0000
+vn -1.0000 -0.0000 -0.0000
+vn -0.0000 -1.0000 -0.0000
+vn 1.0000 -0.0000 -0.0000
+vn -0.0000 -0.0000 -1.0000
+vt 0.250000 1.000000
+vt -0.000000 1.000000
+vt -0.000000 0.750000
+vt 0.250000 0.750000
+vt 0.250000 0.000000
+vt 0.250000 0.062500
+vt 0.000000 0.062500
+vt 0.000000 0.000000
+vt 1.000000 0.000000
+vt 1.000000 0.062500
+vt 0.750000 0.062500
+vt 0.750000 0.000000
+vt 0.000000 0.437500
+vt 0.250000 0.437500
+vt 0.250000 0.687500
+vt 0.000000 0.687500
+vt 0.500000 0.000000
+vt 0.500000 0.062500
+vt 1.000000 1.000000
+vt 0.875000 1.000000
+vt 0.875000 0.062500
+vt 0.750000 1.000000
+vt 0.625000 1.000000
+vt 0.625000 0.062500
+vt 0.500000 1.000000
+vt 0.187500 0.812500
+vt 0.187500 0.937500
+vt 0.062500 0.937500
+vt 0.062500 0.812500
+s 0
+f 1/1/1 5/2/1 7/3/1 3/4/1
+f 4/5/2 3/6/2 7/7/2 8/8/2
+f 8/9/3 7/10/3 5/11/3 6/12/3
+f 6/13/4 2/14/4 4/15/4 8/16/4
+f 2/17/5 1/18/5 3/6/5 4/5/5
+f 6/12/6 5/11/6 1/18/6 2/17/6
+f 9/10/3 10/19/3 12/20/3 11/21/3
+f 11/21/6 12/20/6 16/22/6 15/11/6
+f 15/11/5 16/22/5 14/23/5 13/24/5
+f 13/24/2 14/23/2 10/25/2 9/18/2
+f 11/26/4 15/27/4 13/28/4 9/29/4
+f 16/27/1 12/28/1 10/29/1 14/26/1

mods/ITEMS/mcl_flowers/init.lua

@@ -183,6 +183,36 @@ def_fern.groups.compostability = 65
 
 minetest.register_node("mcl_flowers:fern", def_fern)
 
+
+--- Clover ---
+-- Similar deal as fern, we can copy a lot from tall grass
+local def_clover = table.copy(def_tallgrass)
+def_clover.description = S("Clover")
+def_clover._doc_items_longdesc = S("Clovers are small plants which occur naturally in plains and other temperate biomes. They can be picked up and planted again.")
+def_clover.drawtype = "mesh"
+def_clover.mesh = "mcl_clover_3leaf.obj"
+def_clover.tiles = { "mcl_flowers_clover.png" }
+def_clover.inventory_image = "mcl_flowers_clover_inv.png"
+def_clover.wield_image = "mcl_flowers_clover_inv.png"
+def_clover.drop = nil
+def_clover.selection_box = {
+	type = "fixed",
+	fixed = { -4/16, -0.5, -4/16, 4/16, 0, 4/16 },
+}
+def_clover.groups.compostability = 30
+
+minetest.register_node("mcl_flowers:clover", def_clover)
+
+local def_4l_clover = table.copy(def_clover)
+def_4l_clover.description = S("Four-leaf Clover")
+def_4l_clover._doc_items_longdesc = S("Clovers are small plants which occur naturally in plains and other temperate biomes. They can be picked up and planted again.")
+def_4l_clover.mesh = "mcl_clover_4leaf.obj"
+def_4l_clover.tiles = { "mcl_flowers_fourleaf_clover.png" }
+def_4l_clover.inventory_image = "mcl_flowers_fourleaf_clover_inv.png"
+def_4l_clover.wield_image = "mcl_flowers_fourleaf_clover_inv.png"
+
+minetest.register_node("mcl_flowers:fourleaf_clover", def_4l_clover)
+
 if has_mcl_flowerpots then
 	mcl_flowerpots.register_potted_flower("mcl_flowers:fern", {
 		name = "fern",

mods/ITEMS/mcl_flowers/models/mcl_clover_3leaf.obj

@@ -0,0 +1,38 @@
+# Blender 3.6.7
+# www.blender.org
+mtllib mcl_clover_3leaf.mtl
+o Plane
+v 0.000000 -0.280000 0.000000
+v 0.000000 -0.280000 0.000000
+v -0.250000 -0.280000 -0.250000
+v 0.250000 -0.280000 -0.250000
+v 0.035355 -0.500000 0.035355
+v 0.035355 -0.300000 0.035355
+v -0.035355 -0.500000 -0.035355
+v -0.035355 -0.300000 -0.035355
+v 0.035355 -0.500000 -0.035355
+v 0.035355 -0.300000 -0.035355
+v -0.035355 -0.500000 0.035355
+v -0.035355 -0.300000 0.035355
+v -0.091506 -0.280000 0.341506
+v -0.341506 -0.280000 -0.091506
+v 0.000000 -0.280000 0.000000
+v 0.341506 -0.280000 -0.091506
+v 0.091506 -0.280000 0.341506
+vn -0.0000 1.0000 -0.0000
+vn -0.7071 -0.0000 0.7071
+vn 0.7071 -0.0000 0.7071
+vt 0.500000 0.437500
+vt 1.000000 0.937500
+vt 0.000000 0.937500
+vt 0.437500 0.062500
+vt 0.562500 0.062500
+vt 0.562500 0.437500
+vt 0.437500 0.437500
+s 0
+usemtl Material.001
+f 2/1/1 4/2/1 3/3/1
+f 5/4/2 6/5/2 8/6/2 7/7/2
+f 9/4/3 10/5/3 12/6/3 11/7/3
+f 1/1/1 14/2/1 13/3/1
+f 15/1/1 17/2/1 16/3/1

mods/ITEMS/mcl_flowers/models/mcl_clover_4leaf.obj

@@ -0,0 +1,32 @@
+# Blender 3.6.7
+# www.blender.org
+mtllib mcl_clover_4leaf.mtl
+o Plane
+v -0.250000 -0.280000 0.250000
+v 0.250000 -0.280000 0.250000
+v -0.250000 -0.280000 -0.250000
+v 0.250000 -0.280000 -0.250000
+v 0.035355 -0.500000 0.035355
+v 0.035355 -0.300000 0.035355
+v -0.035355 -0.500000 -0.035355
+v -0.035355 -0.300000 -0.035355
+v 0.035355 -0.500000 -0.035355
+v 0.035355 -0.300000 -0.035355
+v -0.035355 -0.500000 0.035355
+v -0.035355 -0.300000 0.035355
+vn -0.0000 1.0000 -0.0000
+vn -0.7071 -0.0000 0.7071
+vn 0.7071 -0.0000 0.7071
+vt 0.000000 0.125000
+vt 0.875000 0.125000
+vt 0.875000 1.000000
+vt 0.000000 1.000000
+vt 0.875000 0.000000
+vt 1.000000 0.000000
+vt 1.000000 0.375000
+vt 0.875000 0.375000
+s 0
+usemtl Material.001
+f 1/1/1 2/2/1 4/3/1 3/4/1
+f 5/5/2 6/6/2 8/7/2 7/8/2
+f 9/5/3 10/6/3 12/7/3 11/8/3

mods/MAPGEN/mcl_biomes/init.lua

@@ -5186,7 +5186,7 @@ local function register_decorations()
 		y_min = 1,
 		y_max = mcl_vars.mg_overworld_max,
 		decoration = "mcl_farming:melon",
-		biomes = {"Jungle"},
+		biomes = {"Jungle", "BambooJungle"},
 	})
 	minetest.register_decoration({
 		deco_type = "simple",
@@ -5203,7 +5203,7 @@ local function register_decorations()
 		y_min = 1,
 		y_max = mcl_vars.mg_overworld_max,
 		decoration = "mcl_farming:melon",
-		biomes = {"JungleM"},
+		biomes = {"JungleM", "BambooJungleM"},
 	})
 	minetest.register_decoration({
 		deco_type = "simple",
@@ -5220,7 +5220,7 @@ local function register_decorations()
 		y_min = 1,
 		y_max = mcl_vars.mg_overworld_max,
 		decoration = "mcl_farming:melon",
-		biomes = {"JungleEdge", "JungleEdgeM"},
+		biomes = {"JungleEdge", "JungleEdgeM", "BambooJungleEdge", "BambooJungleEdgeM"},
 	})
 
 	-- Lots of melons in Jungle Edge M
@@ -5260,6 +5260,7 @@ local function register_decorations()
 		},
 		y_min = 1,
 		y_max = mcl_vars.mg_overworld_max,
+		biomes = {"ExtremeHills", "ExtremeHillsM", "ExtremeHills+", "Taiga", "MegaTaiga", "MegaSpruceTaiga", "Plains", "SunflowerPlains", "Swampland", "MangroveSwamp"},
 	})
 
 	-- Grasses and ferns
@@ -5589,7 +5590,7 @@ local function register_decorations()
 			num_spawn_by = 1,
 		})
 	end
-	local function register_flower(name, biomes, seed, is_in_flower_forest)
+	local function register_flower(name, biomes, seed, is_in_flower_forest, custom_rarity_mod)
 		if is_in_flower_forest == nil then
 			is_in_flower_forest = true
 		end
@@ -5599,7 +5600,7 @@ local function register_decorations()
 				place_on = {"group:grass_block_no_snow", "mcl_core:dirt"},
 				sidelen = 16,
 				noise_params = {
-					offset = 0.0008,
+					offset = 0.0008 + (custom_rarity_mod or 0),
 					scale = 0.006,
 					spread = {x = 100, y = 100, z = 100},
 					seed = seed,
@@ -5651,6 +5652,9 @@ local function register_decorations()
 
 	register_flower("lily_of_the_valley", nil, 325)
 	register_flower("cornflower", flower_biomes2, 486)
+
+	register_flower("clover", flower_biomes1, 3, false, 0.04)
+	register_flower("fourleaf_clover", flower_biomes1, 13, false, -0.002)
 end
 
 -- Decorations in non-Overworld dimensions

mods/PLAYER/mcl_hunger/init.lua

@@ -266,7 +266,7 @@ minetest.register_globalstep(function(dtime)
 		food_tick_timers[player] = food_tick_timer -- update food_tick_timer table
 
 		-- Eating delay code
-		if mcl_hunger.eat_internal[player_name].is_eating or mcl_hunger.eat_internal[player_name]._custom_do_delayed then
+		if mcl_hunger.eat_internal[player_name] and mcl_hunger.eat_internal[player_name].is_eating or mcl_hunger.eat_internal[player_name]._custom_do_delayed then
 			mcl_hunger.eat_internal[player_name].is_eating = true
 			mcl_hunger.eat_internal[player_name].is_eating_no_padding = true