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which is unable to guarantee that every grid it generates can be solved. So I'm eliminating that exception: this checkin contains a more sophisticated grid generator which does guarantee solubility. It's a bit slow (most noticeably on the 15x10c3 preset), and the quality of the generated grids is slightly weird (a tendency toward small regions rather than large sweeping areas of contiguous colour); however, I'm willing to see the latter as a feature for now, since making the game more challenging while simultaneously guaranteeing it to be possible sounds like an all-round win to me. From now on I'm raising my standards for contributions to this collection. I made this fix to Same Game because I heard a user _automatically assume_ that any puzzle in my collection would not be so uncouth as to generate an impossible grid; as of this checkin that's actually true, and I intend to maintain that standard of quality henceforth. (Guaranteeing a _unique_ solution is more of an optional extra, since there are many games for which it isn't a meaningful concept or isn't particularly desirable. Which is not to say that _some_ games wouldn't be of unacceptably low quality if they failed to guarantee uniqueness; it depends on the game.) [originally from svn r6124]
This is the README accompanying the source code to Simon Tatham's puzzle collection. The collection's web site is at <http://www.chiark.greenend.org.uk/~sgtatham/puzzles/>. You should find several Makefiles in the source code: - `Makefile' should work under GNU make on Linux, provided you have GTK installed to compile and link against. It builds GTK binaries of the puzzle games. - `Makefile.vc' should work under MS Visual C++ on Windows. - `Makefile.cyg' should work under Cygwin / MinGW. With appropriate tweaks and setting of TOOLPATH, it should work for both compiling on Windows and cross-compiling on Unix. - `Makefile.osx' should work under Mac OS X, provided the Xcode tools are installed. It builds a single monolithic OS X application capable of running any of the puzzles, or even more than one of them at a time. Many of these Makefiles build a program called `nullgame' in addition to the actual game binaries. This program doesn't do anything; it's just a template for people to start from when adding a new game to the collection, and it's compiled every time to ensure that it _does_ compile and link successfully (because otherwise it wouldn't be much use as a template). Once it's built, you can run it if you really want to (but it's very boring), and then you should ignore it. DO NOT EDIT THE MAKEFILES DIRECTLY, if you plan to send any changes back to the maintainer. The makefiles are generated automatically by the Perl script `mkfiles.pl' from the file `Recipe'. If you need to change the makefiles as part of a patch, you should change Recipe and/or mkfiles.pl. The manual is provided in Windows Help format for the Windows build; in text format for anyone who needs it; and in HTML for the Mac OS X application and for the web site. It is generated from a Halibut source file (puzzles.but), which is the preferred form for modification. To generate the manual in other formats, rebuild it, or learn about Halibut, visit the Halibut website at <http://www.chiark.greenend.org.uk/~sgtatham/halibut/>.