Wave Function Collapse in C++20
This requires the C++ version pcg_random.
Also, make sure you recurse submodules when cloning.
Example:
$ ./wfc -i mountain_range.txt -w 32 -h 32 -d 3 -o
^^ &...& ^^^ &&&&&..
^^^ &...& ^^ ^^^ &&&&
^^ &..&& ^^ ^^^^
^^ &..&& ^^^ ^^
&..& ^^^ ^^^
&..& ^^^ ^^^^ ^^
^^ &..& ^^^ ^^ ^^^ ^^
^^^ &..& ^^^ ^^ ^^
^^ &..& &&&&&&
&..& &&&&&&&&&..&&&&&&&&&&&
&&&&&..&&&&&....................
................................
...............&&&&&........&&&&
&&&&&&&&&&&&&&&&& &&.......&
&& &.......&
^^^^ &......&& ^^
& ^^^^^^^ ^^ &......&& ^^
& ^^^^ ^^ &.......&
& && &.......&
&&&&&&&&&&&&&& &......&&
........&&..&&&&&&&&&......&&
...........................&
&&&&&......................&
&...&&&&&&&............&
&..&& &............&
^ &..& &............& &&
^^ &..& ^^ &............&&&&&
^^ &..& ^^^^ &..&&&&...........
&..& ^^^ &..& &...........
&&&&&..& &..& &..&&&&&&&&&
&&.....& &..& &..& &
.......& &..& &..& ^^