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- *** LIGHTS OUT for the Palm Computing Platform
- *** v1.1
- ***
- *** By Andy Scheffler (ascheffl@hamusutaa.com)
-
- Contents:
-
- 0. Freeware Notice
- 1. How to Play
- 2. Layout of the screen
- 3. The Menus
- 4. Differences from the toy
- 5. Version History
- 6. What's planned for the future
- 7. Edit Mode
- 8. Technical Notes
- 9. Philosophy of Lights Out
- 10. Contacting the Author
-
- ****************************************
- 0. Freeware Notice
- ****************************************
-
- This program is freeware. No one can charge for it, and it cannot be
- distributed without this readme. Although I'm not charging for it, if
- you send me an email just to let me know how you like it, I'd
- appreciate it.
-
- ****************************************
- 1. How to Play
- ****************************************
- Lights Out is a handheld device made by Tiger Electronics, about the
- size of a VHS tape. It has 25 lights/buttons on it which can either
- be on or off. The object is to get all of the lights off, hence the
- name of the game.
-
- Whenever you hit a button, if that button is off, it turns on. If
- that button was on, it turns off. But, the four buttons that are on
- the top, bottom, left and right of that button also switch states like
- this.
-
- Also, I should mention that you have to do it in a certain number of
- moves. Each puzzle has a magic number of moves that is the minimum
- number of moves necessary to solve it. If you solve it in this
- number, the screen will give a little spiral animation. If you take
- anywhere up to 10 extra moves, it will instead flash a number of
- buttons equal to the number you were over. Any more than 10 extra
- moves, and it flashes a big "X" and you have to start that level over.
-
- There are three modes of play. The main mode is the Puzzle mode. There
- are 50 puzzles built into the game. In this mode, when you finish one
- puzzle, you advance to the next. The next mode is Random mode. In
- this mode, a puzzle is automatically generated at the specified
- difficulty. Your progress will be saved if you turn off your Palm
- device. The last mode is Edit mode. In this mode, you can create your
- own puzzle, and then play it.
-
- ****************************************
- 2. Layout of the screen
- ****************************************
- The main portion of the screen is made up of the lights. If you tap
- one, it will switch states of it and its four neighbors. Along the
- right side, there are the following, from top to bottom:
-
- * Number of Moves taken so far in this attempt
- * Minimum number of moves necessary to solve this level
- * Level number of current puzzle (only in Puzzle Mode)
- * Restart button - restarts the current puzzle
- * Hint button (only works in Puzzle Mode)
- * Play / Edit switch button (replaces the Hint button in Edit Mode)
-
- These should be self-explanitory except for the Hint button. The Hint
- button only works in Puzzle Mode, and only if you haven't hit any
- lights yet. If you hit it, it will flash a light as a hint to start
- you off, and then it will make the move for you. You can do this up
- to twice on each level, and only on the first 25.
-
- In Edit mode, the Hint icon changes from a "?" to a "P/E". This button
- is used to switch between Edit Mode (edit) and Edit Mode (play). For
- more information, see Section 7: Edit Mode.
-
- In addition, when selecting a Random level (or you have just completed
- one) a spinning bar will appear in the lower left corner to let you know
- the program is trying to find a new Random level. This should never be
- noticable except in levels 14 and 15.
-
- ****************************************
- 3. The Menus
- ****************************************
-
- Game Menu
- ---------
-
- Select...: Select a new puzzle
-
- In Puzzle mode, you can select any puzzle you have already completed.
- In Random mode, you can select the difficulty of a new puzzle. Keep
- in mind that when you select a new level, your current puzzle will be
- lost.
-
- Restart: Restart the current puzzle
-
- Same as pressing the restart button, restarts the puzzle to what it
- was when you first got it. In Edit Mode (edit), this clears the screen.
-
- Reset: Reset progress in Puzzle mode
-
- After a confirmation, this will reset you back to Puzzle #1 in Puzzle
- Mode.
-
- Mode Menu
- ---------
-
- Puzzle: Selects Puzzle Mode
-
- Selects the Puzzle Mode. You will lose your current Puzzle.
-
- Random: Selects Random Mode
-
- Selects the Random Mode. You will lose your current Puzzle.
-
- Edit: Selects Edit Mode
-
- Selects the Edit Mode. You will lose your current Puzzle. For more
- information on Edit Mode, see section 7.
-
- Help Menu
- ---------
-
- Hint: Same as pressing the hint button.
-
- Solve: Solve the current puzzle.
-
- The last resort of the truly frustrated. This button will display
- the solution on top of the current puzzle. To solve it, hit all
- of the buttons marked with an "x" in any order.
-
- About: Display version info.
-
- ****************************************
- 4. Differences from the toy
- ****************************************
- 1) There is a solve feature.
-
- 2) Random puzzles can be selected at any level at any time. In the
- toy, you can only select a random level of difficulty no harder
- that the current level you are on in the Puzzle mode.
-
- 3) Random puzzles of difficulty 14 and 15 take much longer to figure out.
-
- 4) Levels in Edit mode keep track of moves and have a minimum. In the
- handheld, you could take as long as you liked.
-
- 5) Progress in current puzzle is saved when pilot it turned off. The
- toy only saves progress from puzzle to puzzle.
-
- 6) Easier interface.
-
- ****************************************
- 5. Version History
- ****************************************
-
- v1.1 Nov 9, 1999
- -------------------
- Added Edit Mode, re-added Random Levels 14 and 15, with a spinning status
- indicator in the lower-left corner. Fixed a bug that was causing Random
- Mode to take much longer than necessary to find a suitable level and was
- not working quite right anyway. This version completes my vision of the
- game, and all further releases will most likely be bug-fixes.
-
- v1.0.3 Nov 2, 1999
- -------------------
- Fixed bug caused by 1.0.2 fix that caused no progress to be saved.
- Silly me.
-
- v1.0.2 May 10, 1999
- -------------------
- Fixed bug where solving level 50 would go to nonexistant level 51 instead
- of back to level 50. (In the future, to more properly mirror the function
- of the original, it should sit at a cross pattern with none of the buttons
- doing anything, until a new game is selected, but this was a quick fix.)
-
- v1.0.1 Mar 2, 1999
- -------------------
- Fixed bug in help code that didn't press the buttons correctly for you, and
- didn't flash correctly.
-
- v1.0 Jan 19, 1999
- -------------------
- Everything.
-
- ****************************************
- 6. What's planned for the future
- ****************************************
-
- * Better random puzzle selection process
- * My next game
-
- ****************************************
- 7. Edit Mode
- ****************************************
-
- This new mode, introduced in version 1.1, completes the functionality of the
- orignal hand-held. When Edit mode is first selected, you are in Edit Mode
- (edit). The Moves Made indicator is replaced with "-Edit-" and now, button
- presses do not have the normal effect, they instead only turn the clicked
- button on or off. You are now editing the level that you wish to play.
- If you press the reset button, or select "Reset" from the menu, the current
- level will be cleared so you can start editing over.
-
- When you are ready to attempt the level you currently have, hit the "P/E"
- button in the lower right corner. (It has replaced the Hint button) You will
- now switch to Edit Mode (play). If the level that you have constructed has
- no solution, however, the program will pop up a dialog informing you of this.
- You may still play the level, of course, but you will never be able to solve
- it.
-
- If the level does have a solution, the Minimum Number of moves is displayed
- on the right, and the level continues as normal.
-
- If you press the "P/E" button again, you will go back to Play Mode (edit).
-
- ****************************************
- 8. Technical Notes
- ****************************************
-
- * Lights Out stores its data entirely in the Preferences, using up almost all
- of its entitled share.
-
- * The solve feature uses an iterative algorithm that finds the best possible
- solution after trying all possibilities. It's O(1), because it always tries
- everything. It never should take any noticable amount of time.
-
- * This was compiled using the GCC cross compiler and Palm's Header Files. It
- was compiled with OS 2 in mind... it works in OS 3, but has not been tested
- in OS 1.
-
- ****************************************
- 9. Philosophy of Lights Out
- ****************************************
-
- As you may have inferred from the solve feature, in any given puzzle
- in Lights Out, it does not matter in which order you press the
- buttons, only which buttons you press. In most cases, if you press a
- certain pattern of buttons, the easiest solution is to press all of
- those buttons again. This isn't always the case, which is why the 14
- and 15 difficulty puzzles took too long to figure. It had to find a
- puzzle which didn't have a shorter solution. I'm curious to know how
- the handheld figures this out...
-
- This was the first Lights Out toy. There are two sequels, Lights Out
- Cube, where the lights are on a cube, and the switching effects wrap
- around the cube, and Lights Out Deluxe, with a 6x6 grid and a whole
- lot of other options. The same solution algorithm can be applied to
- LOD in most of its modes, but not the cube. I'm still trying to
- figure it out.
-
- ****************************************
- 10. Contacting the Author
- ****************************************
-
- My email is ascheffl@hamusutaa.com and I appreciate any sort of bug-reports,
- compliments, suggestions etc.
-
- You can find the most recent version at:
-
- http://www.hamusutaa.com/pilot/lightsout.html
-
- ****************************************
-
- This document, as well as the source code for Lights Out, was edited in
- GNU Emacs.
-
- v1.1 11/09/99