X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/7c568a48f46bd88d9f298a1c29ac0f64a88266c0..daaccee83ed942715e01ce256cd94340605bf330:/puzzles.but

diff --git a/puzzles.but b/puzzles.but
index 8d592b5..7d90f43 100644
--- a/puzzles.but
+++ b/puzzles.but
@@ -82,6 +82,10 @@ These actions are all available from the \I{Game menu}\q{Game} menu
 and via \I{keys}keyboard shortcuts, in addition to any game-specific
 actions.
 
+(On Mac OS X, to conform with local user interface standards, these
+actions are situated on the \I{File menu}\q{File} and \I{Edit
+menu}\q{Edit} menus instead.)
+
 \dt \ii\e{New game} (\q{N}, Ctrl+\q{N})
 
 \dd Starts a new game, with a random initial state.
@@ -99,6 +103,40 @@ game.)
 
 \dd Redoes a previous undone move.
 
+\dt \ii\e{Copy}
+
+\dd Copies the current state of your game to the clipboard in text
+format, so that you can paste it into (say) an e-mail client or a
+web message board if you're discussing the game with someone else.
+(Not all games support this feature.)
+
+\dt \ii\e{Solve}
+
+\dd Transforms the puzzle instantly into its solved state. For some
+games (Cube) this feature is not supported at all because it is of
+no particular use. For other games (such as Pattern), the solved
+state can be used to give you information, if you can't see how a
+solution can exist at all or you want to know where you made a
+mistake. For still other games (such as Sixteen), automatic solution
+tells you nothing about how to \e{get} to the solution, but it does
+provide a useful way to get there quickly so that you can experiment
+with set-piece moves and transformations.
+
+\lcont{
+
+Some games (such as Solo) are capable of solving a game ID you have
+typed in from elsewhere. Other games (such as Rectangles) cannot
+solve a game ID they didn't invent themself, but when they did
+invent the game ID they know what the solution is already. Still
+other games (Pattern) can solve \e{some} external game IDs, but only
+if they aren't too difficult.
+
+The \q{Solve} command adds the solved state to the end of the undo
+chain for the puzzle. In other words, if you want to go back to
+solving it yourself after seeing the answer, you can just press Undo.
+
+}
+
 \dt \I{exit}\ii\e{Quit} (\q{Q}, Ctrl+\q{Q})
 
 \dd Closes the application entirely.
@@ -106,8 +144,8 @@ game.)
 \H{common-id} Recreating games with the \ii{game ID}
 
 The \q{\i{Specific...}} option from the \I{Game menu}\q{Game} menu
-lets you see a short string (the \q{game ID}) that captures the
-initial state of the current game.
+(or the \q{File} menu, on Mac OS X) lets you see a short string (the
+\q{game ID}) that captures the initial state of the current game.
 
 The precise \I{ID format}format of the ID is specific to each game.
 It consists of two parts delimited by a colon (e.g., \c{c4x4:4F01,0});
@@ -151,11 +189,11 @@ command line.
 
 The easiest way to do this is to set up the parameters you want
 using the \q{Type} menu (see \k{common-type}), and then to select
-\q{Specific} from the \q{Game} menu (see \k{common-id}). The text in
-the \q{Game ID} box will be composed of two parts, separated by a
-colon. The first of these parts represents the game parameters (the
-size of the playing area, for example, and anything else you set
-using the \q{Type} menu).
+\q{Specific} from the \q{Game} or \q{File} menu (see \k{common-id}).
+The text in the \q{Game ID} box will be composed of two parts,
+separated by a colon. The first of these parts represents the game
+parameters (the size of the playing area, for example, and anything
+else you set using the \q{Type} menu).
 
 If you run the game with just that parameter text on the command
 line, it will start up with the settings you specified.
@@ -382,6 +420,62 @@ The only parameters available from the \q{Custom...} option on the
 self-explanatory.
 
 
+\C{twiddle} \i{Twiddle}
+
+\cfg{winhelp-topic}{games.twiddle}
+
+Twiddle is a tile-rearrangement puzzle, visually similar to Sixteen
+(see \k{sixteen}): you are given a grid of square tiles, each
+containing a number, and your aim is to arrange the numbers into
+ascending order.
+
+In basic Twiddle, your move is to rotate a square group of four
+tiles about their common centre. (Orientation is not significant in
+the basic puzzle, although you can select it.) On more advanced
+settings, you can rotate a larger square group of tiles.
+
+I first saw this type of puzzle in the GameCube game \q{Metroid
+Prime 2}. In the Main Gyro Chamber in that game, there is a puzzle
+you solve to unlock a door, which is a special case of Twiddle. I
+developed this game as a generalisation of that puzzle.
+
+\H{twiddle-controls} \I{controls, for Twiddle}Twiddle controls
+
+To play Twiddle, click the mouse in the centre of the square group
+you wish to rotate. In the basic mode, you rotate a 2\by\.2 square,
+which means you have to click at a corner point where four tiles
+meet.
+
+In more advanced modes you might be rotating 3\by\.3 or even more at
+a time; if the size of the square is odd then you simply click in
+the centre tile of the square you want to rotate.
+
+Clicking with the left mouse button rotates the group anticlockwise.
+Clicking with the right button rotates it clockwise.
+
+(All the actions described in \k{common-actions} are also available.)
+
+\H{twiddle-parameters} \I{parameters, for Twiddle}Twiddle parameters
+
+Twiddle provides several configuration options via the \q{Custom}
+option on the \q{Type} menu:
+
+\b You can configure the width and height of the puzzle grid.
+
+\b You can configure the size of square block that rotates at a time.
+
+\b You can ask for every square in the grid to be distinguishable
+(the default), or you can ask for a simplified puzzle in which there
+are groups of identical numbers. In the simplified puzzle your aim
+is just to arrange all the 1s into the first row, all the 2s into
+the second row, and so on.
+
+\b You can configure whether the orientation of tiles matters. If
+you ask for an orientable puzzle, each tile will have a triangle
+drawn in it. All the triangles must be pointing upwards to complete
+the puzzle.
+
+
 \C{rectangles} \i{Rectangles}
 
 \cfg{winhelp-topic}{games.rectangles}
@@ -597,9 +691,10 @@ particular, on difficulty levels \q{Trivial} and \q{Basic} there
 will be a square you can fill in with a single number at all times,
 whereas at \q{Intermediate} level and beyond you will have to make
 partial deductions about the \e{set} of squares a number could be in
-(or the set of numbers that could be in a square). None of the
-difficulty levels generated by this program ever requires making a
-guess and backtracking if it turns out to be wrong.
+(or the set of numbers that could be in a square). At
+\q{Unreasonable} level, even this is not enough, and you will
+eventually have to make a guess, and then backtrack if it turns out
+to be wrong.
 
 Generating difficult puzzles is itself difficult: if you select
 \q{Intermediate} or \q{Advanced} difficulty, Solo may have to make
@@ -644,6 +739,8 @@ parameters:
 
 \b \cq{da} for Advanced difficulty level
 
+\b \cq{du} for Unreasonable difficulty level
+
 So, for example, you can make Solo generate asymmetric 3x4 grids by
 running \cq{solo 3x4a}, or 4-way rotationally symmetric 2x3 grids by
 running \cq{solo 2x3r4}, or \q{Advanced}-level 2x3 grids by running