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* New rule: interpret_move() is passed a pointer to the game_drawstateSimon Tatham2012-09-09
| | | | | | | | | | | | | | | | basically just so that it can divide mouse coordinates by the tile size, but is definitely not expected to _write_ to it, and it hadn't previously occurred to me that anyone might try. Therefore, interpret_move() now gets a pointer to a _const_ game_drawstate instead of a writable one. All existing puzzles cope fine with this API change (as long as the new const qualifier is also added to a couple of subfunctions to which interpret_move delegates work), except for the just-committed Undead, which somehow had ds->ascii and ui->ascii the wrong way round but is otherwise unproblematic. [originally from svn r9657]
* Changed my mind about midend_is_solved: I've now reprototyped it asSimon Tatham2011-06-19
| | | | | | | | | | | | | | | | midend_status(), and given it three return codes for win, (permanent) loss and game-still-in-play. Depending on what the front end wants to use it for, it may find any or all of these three states worth distinguishing from each other. (I suppose a further enhancement might be to add _non_-permanent loss as a fourth distinct status, to describe situations in which you can't play further without pressing Undo but doing so is not completely pointless. That might reasonably include dead-end situations in Same Game and Pegs, and blown-self-up situations in Mines and Inertia. However, I haven't done this at present.) [originally from svn r9179]
* Apply a missing bit of r9164, which only broke the build withSimon Tatham2011-05-05
| | | | | | | -DDEBUGGING so I didn't notice it at the time. [originally from svn r9167] [r9164 == 2efc77d2fde7e53604f8490b57f18a36eec5c4fb]
* Fix warnings generated by gcc 4.6.0 about variables set but notSimon Tatham2011-05-04
| | | | | | | | | | thereafter read. Most of these changes are just removal of pointless stuff or trivial reorganisations; one change is actually substantive, and fixes a bug in Keen's clue selection (the variable 'bad' was unreferenced not because I shouldn't have set it, but because I _should_ have referenced it!). [originally from svn r9164]
* Add a function to every game backend which indicates whether a gameSimon Tatham2011-04-02
| | | | | | | | | | | state is in a solved position, and a midend function wrapping it. (Or, at least, a situation in which further play is pointless. The point is, given that game state, would it be a good idea for a front end that does that sort of thing to proactively provide the option to start a fresh game?) [originally from svn r9140]
* Patch from Jonas Koelker to fix a double free in magnetssolver.Simon Tatham2010-07-04
| | | | [originally from svn r8972]
* Fix incorrect uses of ctype.h (passing it uncast chars, or otherSimon Tatham2010-04-17
| | | | | | things potentially not in the range 0..255). [originally from svn r8922]
* Placate optimiser.Simon Tatham2010-01-13
| | | | [originally from svn r8838]
* New puzzle from James H: 'Magnets'.Simon Tatham2010-01-13
[originally from svn r8836]