Copyright stuff.

19 files changed, 740 insertions, 1 deletions

diff --git a/CC0 b/CC0
new file mode 100644
index 0000000..0e259d4
--- /dev/null
+++ b/CC0
@@ -0,0 +1,121 @@
+Creative Commons Legal Code
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diff --git a/GPL b/GPL
new file mode 100644
index 0000000..d159169
--- /dev/null
+++ b/GPL
@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
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+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
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+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
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+that everyone understands that there is no warranty for this free
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+  Finally, any free program is threatened constantly by software
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+  The precise terms and conditions for copying, distribution and
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+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
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+language.  (Hereinafter, translation is included without limitation in
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+
+Activities other than copying, distribution and modification are not
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+running the Program is not restricted, and the output from the Program
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+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute 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 and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
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+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
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+    notice that there is no warranty (or else, saying that you provide
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+    License.  (Exception: if the Program itself is interactive but
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+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
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+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
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+exercise the right to control the distribution of derivative or
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+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
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+
+  4. You may not copy, modify, sublicense, or distribute the Program
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+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
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+prohibited by law if you do not accept this License.  Therefore, by
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+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
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+License and any other pertinent obligations, then as a consequence you
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+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
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+
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+to distribute software through any other system and a licensee cannot
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+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, 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.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE 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.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..594b0b1
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1 @@
+The source code is licensed under GPL v2 or newer. Everything else (assets and their sources) is licensed under CC0 v1.0.
diff --git a/src/common.hpp b/src/common.hpp
index f623f09..f7435ca 100644
--- a/src/common.hpp
+++ b/src/common.hpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include <iostream>
 #include <cinttypes>
 #include <cmath>
diff --git a/src/game/assets.cpp b/src/game/assets.cpp
index 241e3d7..03ca7d8 100644
--- a/src/game/assets.cpp
+++ b/src/game/assets.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "game.hpp"
 
 namespace game::assets {
diff --git a/src/game/decos.cpp b/src/game/decos.cpp
index 4b92c8e..ebd8bb8 100644
--- a/src/game/decos.cpp
+++ b/src/game/decos.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "game.hpp"
 
 namespace game {
diff --git a/src/game/effects.cpp b/src/game/effects.cpp
index 844f365..932b562 100644
--- a/src/game/effects.cpp
+++ b/src/game/effects.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "game.hpp"
 
 namespace game {
diff --git a/src/game/game.cpp b/src/game/game.cpp
index 3f64e0c..a6eda99 100644
--- a/src/game/game.cpp
+++ b/src/game/game.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "game.hpp"
 
 namespace game {
diff --git a/src/game/game.hpp b/src/game/game.hpp
index e609992..213e8b1 100644
--- a/src/game/game.hpp
+++ b/src/game/game.hpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "../common.hpp"
 
 namespace game {
diff --git a/src/game/interface.cpp b/src/game/interface.cpp
index 0c2125b..5e5dc70 100644
--- a/src/game/interface.cpp
+++ b/src/game/interface.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "game.hpp"
 #include <iomanip>
 
@@ -39,7 +56,13 @@ void state_t::tick(double dt)
 		view_size.y = view_scale * size.y / size.x;
 	}
 
-	if (game->selected_units.size() && camera.following) {
+	if (!game->selected_units.size() && camera.following) {
+		camera.center = camera.follow_center;
+		print(text::get(text::FOLLOWING_OFF));
+		camera.following = false;
+	}
+
+	if (camera.following) {
 		for (entity_t *ent : game->selected_units)
 			follow_center += ent->render_bounds.center();
 		follow_center /= game->selected_units.size();
diff --git a/src/game/text.cpp b/src/game/text.cpp
index 7addbfa..6f684f0 100644
--- a/src/game/text.cpp
+++ b/src/game/text.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "game.hpp"
 
 namespace game::text {
diff --git a/src/game/units.cpp b/src/game/units.cpp
index 214861b..308687d 100644
--- a/src/game/units.cpp
+++ b/src/game/units.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "game.hpp"
 
 namespace game {
diff --git a/src/game/worldgen.cpp b/src/game/worldgen.cpp
index 8a6addf..61ceea3 100644
--- a/src/game/worldgen.cpp
+++ b/src/game/worldgen.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "game.hpp"
 
 namespace game {
diff --git a/src/main.cpp b/src/main.cpp
index 37c75af..f45fb24 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "common.hpp"
 #include <ctime>
 
diff --git a/src/math.hpp b/src/math.hpp
index e393015..e0b8f1b 100644
--- a/src/math.hpp
+++ b/src/math.hpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 template <typename T, size_t N>
 class vec_t {
 	template<size_t index, typename... U>
diff --git a/src/path_finder.cpp b/src/path_finder.cpp
index 30e9ebd..8a61cc6 100644
--- a/src/path_finder.cpp
+++ b/src/path_finder.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "common.hpp"
 
 namespace world {
diff --git a/src/procgen.cpp b/src/procgen.cpp
index 5fab153..440056a 100644
--- a/src/procgen.cpp
+++ b/src/procgen.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "common.hpp"
 #include <cmath>
 
diff --git a/src/render.cpp b/src/render.cpp
index a640ecc..8ad0e25 100644
--- a/src/render.cpp
+++ b/src/render.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "common.hpp"
 #include <iomanip>
 
diff --git a/src/world.cpp b/src/world.cpp
index 6a0ba97..640ac6e 100644
--- a/src/world.cpp
+++ b/src/world.cpp
@@ -1,3 +1,20 @@
+/*
+This file is part of Minitrem.
+
+Minitrem is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+Minitrem 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 Minitrem.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include "common.hpp"
 #include <sstream>