NoX Core: third-party notices

NoX Core is licensed under the GNU General Public License v3.0 or later (LICENSE). It includes
or links the following third-party code, each under its own licence, reproduced below.

  Component                          Licence                    Where
  ---------------------------------  -------------------------  ---------------------------------
  OpenNox noxcrypt                   MIT                        ported: noxcore/src/crypto/noxcrypt.cpp
  OpenNox libs, opennox-lib          MIT                        ported: noxcore string table, object
                                                                classes, map sections, sprites, NXZ,
                                                                video.bag, game folder detection
  SDL 3                              zlib                       noxsdl (static)
  Zstandard                          BSD-3-Clause               noxcore (static)
  miniupnpc                          BSD-3-Clause               noxsdl (static)
  stb_truetype, stb_image,           MIT or public domain       noxsdl, noxvideo
    stb_image_write
  dr_mp3                             public domain or MIT-0     noxcore
  bcdec                              MIT or public domain       noxcore (image pack BC7 decode)
  bc7enc_rdo (bc7enc, ert, rgbcx,    MIT or public domain       noxvideo tools only (BC7 encode),
    rdo_bc_encoder, utils)                                      not distributed with noxsdl
  LodePNG (with bc7enc_rdo)          zlib                       noxvideo tools only, not distributed
  Noto Sans SemiBold                 SIL Open Font License 1.1  noxsdl (embedded; NotoSans-OFL.txt)
  Dear ImGui                         MIT                        noxvideo, NoxBots
  JSON for Modern C++ (nlohmann)     MIT                        noxvideo
  FFmpeg (LGPL build)                LGPL-2.1-or-later          HD movies download only, separate DLLs
  Catch2                             BSL-1.0                    tests only, not distributed

Also consulted, names and file layouts only (no code taken): the community's NoxScript tools
(noxworld-dev/noxscript: instruction and builtin names), and the 2007 Nox Map Editor's shared
library (ThingDb.cs, ObjDataXfer: thing.bin and object field names). All of it was checked
against the game's own files and behaviour.


==============================================================================
OpenNox noxcrypt (https://github.com/opennox/noxcrypt)
==============================================================================

MIT License

Copyright (c) 2021 OpenNox

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


==============================================================================
OpenNox libs (https://github.com/opennox/libs) and opennox-lib
(https://github.com/noxworld-dev/opennox-lib)
==============================================================================

MIT License

Copyright (c) 2022 NoX World

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


==============================================================================
SDL 3 (https://libsdl.org)
==============================================================================

Copyright (C) 1997-2026 Sam Lantinga <slouken@libsdl.org>

This software is provided 'as-is', without any express or implied
warranty.  In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not
   claim that you wrote the original software. If you use this software
   in a product, an acknowledgment in the product documentation would be
   appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.

NoX Core builds SDL 3.4.16 with one patch (cmake/patches/
sdl3_d3d12_descriptor_overflow.cmake: a D3D12 descriptor heap fix).


==============================================================================
Zstandard (https://github.com/facebook/zstd)
==============================================================================

BSD License

For Zstandard software

Copyright (c) Meta Platforms, Inc. and affiliates. All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither the name Facebook, nor Meta, nor the names of its contributors may
   be used to endorse or promote products derived from this software without
   specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


==============================================================================
miniupnpc (https://miniupnp.tuxfamily.org)
==============================================================================

BSD 3-Clause License

Copyright (c) 2005-2025, Thomas BERNARD
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its
   contributors may be used to endorse or promote products derived from
   this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


==============================================================================
stb_truetype, stb_image, stb_image_write (https://github.com/nothings/stb)
==============================================================================

Used under the MIT licence (the stb libraries are also in the public domain):

Copyright (c) 2017 Sean Barrett

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


==============================================================================
dr_mp3 (https://github.com/mackron/dr_libs)
==============================================================================

Released into the public domain, or under MIT No Attribution (Copyright 2023
David Reid), at the user's choice. No notice is required.


==============================================================================
bcdec (https://github.com/iOrange/bcdec)
==============================================================================

Available under 2 licences, at the user's choice. Used under ALTERNATIVE A:

MIT License

Copyright (c) 2022 Sergii Kudlai

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


==============================================================================
bc7enc_rdo (https://github.com/richgel999/bc7enc_rdo), tools only
==============================================================================

The files used (bc7enc, bc7decomp, ert, rgbcx, rdo_bc_encoder, utils) are available
under 2 licences, at the user's choice. Used under ALTERNATIVE A, the MIT License,
Copyright (c) 2020-2021 Richard Geldreich, Jr., with the same terms as the MIT
licence above. bc7e.ispc (Apache 2.0) is not used. LodePNG, built with it, is
Copyright (c) 2005-2016 Lode Vandevenne under the zlib licence (see lodepng.cpp).


==============================================================================
Noto Sans (https://notofonts.github.io)
==============================================================================

Licensed under the SIL Open Font License, Version 1.1; its full text ships beside
the program as NotoSans-OFL.txt.


==============================================================================
Dear ImGui (https://github.com/ocornut/imgui)
==============================================================================

The MIT License (MIT)

Copyright (c) 2014-2026 Omar Cornut

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


==============================================================================
JSON for Modern C++ (https://github.com/nlohmann/json)
==============================================================================

MIT License

Copyright (c) 2013-2025 Niels Lohmann <https://nlohmann.me>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


==============================================================================
FFmpeg (https://ffmpeg.org)
==============================================================================

The optional HD movies download carries FFmpeg's shared libraries (avcodec,
avformat, avutil, swresample, swscale), an LGPL-2.1-or-later build by BtbN
(https://github.com/BtbN/FFmpeg-Builds), unmodified, loaded at run time from
HDVideo\. Its licence and source details ship beside them (FFmpeg-LICENSE.txt,
FFmpeg-SOURCE.txt). NoX Core itself contains no FFmpeg code.
