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- ============================================================================
- -------- DoubleLink -------
- ============================================================================
-
- (c) 1991 by Paul R. Tupaczewski
-
- Release version 1.0, January 19, 1991.
-
-
-
- *> This game is SHAREWARE. <*
-
- The Shareware Concept: This game is part of a growing trend called
- "Shareware." You may give this game to all your
- friends. If you or they like it, and find themselves
- playing it often, then a donation of $15 is
- requested. This entitles you to future updates and
- source code. Keep Shareware alive by supporting it!
-
-
- If you enjoy DoubleLink, a donation of $15 is requested. Send to:
-
- Paul Tupaczewski
- Stevens Institute of Technology
- Box S-1400
- Hoboken, NJ 07030-5991
-
- Comments? Questions? Criticisms? If you have access to either InterNet
- or Bitnet, you can send me E-mail at:
-
- InterNet: U93_PTUPACZE@VAXC.STEVENS-TECH.EDU
- Bitnet: U93_PTUPACZE@SITVXC
-
-
-
- Disclaimer: The author assumes no connection with Stevens Insititute of
- Technology, and is an independent entity. SIT name listed only
- as a reference to author's current location.
-
-
-
- ================
- Introduction
- ================
-
- After receiving many compliments on my first major game (well, not
- really - see the Appendix), SITris, I've gotten to work on my next
- endavor. DoubleLink, in the tradition of SITris, was written during
- (what else?) finals week of my first semester of my sophomore year
- here at Stevens Tech. (No, I'm still majoring in Electrical Engineering -
- NOT Comp. Sci!) It's a game similar to SITris, in the respect that you
- have rotatable pieces, and you combine them to get certain patterns,
- but there, the similarity ends. DoubleLink is, as you will find, a fairly
- addicting game. So, enough jabber - let's play!
-
-
- ========================
- Installing and Running
- ========================
-
- Along with this .DOC file, you will find several files related to the
- game. It would be a pretty wise idea to copy all these files into a
- subdirectory, either on a floppy or hard drive. Once the files are in
- their own subdirectory, go to that subdirectory and type DOUBLINK to
- load the game. The program will autodetect the best graphics mode for
- your system, and automatically switch to it. The main menu will soon
- appear. (Note: If you don't like the current graphics mode, you can
- change it - see Main Menu)
-
- NOTE: Be sure there are no memory-resident applications before running
- the game - it may foul up the digitized sound. If the sound sounds
- strange, reboot the machine and try again.
-
-
- ==================
- Playing the Game
- ==================
-
- Enough formality - at this point, let's just get to the game!
- On the title page, the words "Begin Game" will be highlighted.
- Just press <ENTER> to begin game play.
-
- The purpose of the game is to eradicate the existence of the
- "Meanies." Meanies appear as multi-colored frowning faces. Each
- succesive level has three more meanies than the previous one. Level
- zero begins with three meanies.
-
- Your weapon in removing the meanies is the DoubleLink. A DoubleLink is
- a double-ended hot-dog shaped object. Each end (or "link) is a particular
- color, and both links can be the same color - both links do not necessarily
- have to be different colors. A DoubleLink can be rotated around a full 360
- degrees, in increments of 90 degrees.
-
- DoubleLinks fall from the top of the screen. As they fall, they can be
- moved left or right, and they can be rotated in 90 degree steps.
- A DoubleLink's movement stops when it hits either the bottom of the
- playfield, a link, or a Meany.
-
- The default keys to move the DoubleLink are: Left arrow key to move left,
- right arrow key to move right, and <SPACE> to rotate. There are some
- additional key commands as well: to drop the DoubleLink straight down
- until it hits something, press the down arrow key. To speed up the downward
- movement of the DoubleLink, press the up arrow key.
-
- With basic play mechanics known, now it's on to the nitty gritty of the
- game. When four links of any one color are aligned together, either
- horizontally or vertically, they are destroyed. Then any links and/or
- DoubleLinks above these links fall (gravity, y'know!) downward, if there
- are empty spaces. A few notes might be helpful here: if a link that is
- removed is also part of a DoubleLink, its companion link becomes a single
- round link; also, when the pieces fall, it is important to remember that
- DoubleLinks will fall as whole pieces - that is, if a piece impedes
- movement of one of its links, it impedes movement of the whole DoubleLink.
- It may also be noted that Meanies are "fixed," and do not fall.
-
- By now, you should see how to remove the Meanies. A Meany can, for all
- intents and purposes, be considered a colored link. To remove one, just
- line it up with three other links of a similar color. Simple, isn't it?
-
- Ah, but there's more! You can create a chain-reaction if you plan
- carefully. The more times you remove a quartet of links, the more
- points you get. You get even more points if a Meany is included in one
- of those quartets. How do you get a chain reaction? Here's one way to
- get a double:
-
- 1) 2)
-
- #% <- the Double-
- Link falls
- #.<- these four
- % . disappear and the remaining
- % . link falls down
- #%* #.*
- ##** ##**
- #*%% #*%%
-
- 3)
- the link combines
- and removes these four - a double!
- .
- . *
- .#**
- .*%%
-
-
- With careful thought, you can easily figure out how to obtain other
- types of doubles, as well as triples, and if you're really shrewd (or
- insane), quadruples! Hint: Practice makes perfect! Try playing a game
- with the intent of practicing different moves; it will help you! This
- is perhaps the best way to really learn DoubleLink.
-
- Also note in the upper right corner is a box labeled "Next," with a
- DoubleLink inside of it. This is an aid that tells you the colors of the
- DoubleLink that will appear next.
-
- As each level is completed, the links remaining on the screen are removed
- and counted, and a bonus is awarded if you have less than 20 remaining.
- The less you have, the more you'll get, so it's to your advantage to leave
- as few links as you can when you complete each level.
-
- Gameplay ends when the stack of links reaches the top of the playfield
- (as in SITris). Press a key to go beyond the "Game Over" window.
- If you've gotten a high enough score, you will see a highlighted bar
- on the high score screen with a block cursor. Enter in up to 25
- characters for your high score name. All high scores are saved to disk.
-
-
- ===============
- The Main Menu
- ===============
-
- Since we skipped from the main menu directly into the game, now it's
- time we went back and explored the menu. Pressing <ESC> during the game
- will abort the game and return you to the main menu. If you're done
- playing the game, you can press <CTRL-Q> or <F10> to exit the game and
- return to DOS.
-
- But since we're exploring, let's see all the commands on this menu.
- "Begin Game" is highlighted. To play the game, you would just press
- <ENTER> at this point. By pressing the up and down arrow keys, the
- highlight bar moves between the different options.
-
- When "Show Next?" is highlighted, you may press the left and right arrow
- keys to toggle it between "YES" and "NO." This lets you choose whether or
- not to display the "Next" box in the upper right corner during the game.
- "Why?" you may ask. Well, it adds some challenge. As an added incentive,
- you also get more points than you would with the "Next" box intact.
-
- When "Level" is highlighted, you may press the left and right arrow keys
- to move the little arrow left and right. As the arrow moves up the
- graphical level display, the level number to its right increases or
- decreases accordingly. This option lets you start at a higher level for
- a more challenging game.
-
- When you highlight "Speed," you can control the arrow in the same way as
- when you highlight "Level." This time, you control the game speed (default
- is zero). A game's speed is constant throughout the game, and this is
- what you are selecting. As an added incentive, the faster the gameplay,
- the higher the score values are.
-
- Finally, there is "Other Options." If this is highlighted, press <ENTER>
- and a submenu will appear to its right. Use the arrow keys to cycle
- through all the options in this submenu:
-
- * High Scores: This will display the high scores for the game.
- * Game Info: This will give information about the game. Press a key
- to return to the menu.
- * Redefine Keys: If you do not like the default keys, here's where
- you can tailor them to your liking. When prompted for
- the various keys, just press them. After all five
- keys have been entered, the game will save them to
- disk so they will be the default keys next time.
- * Sound Type: Here's where you can choose your sound type. Use the up
- and down arrow keys and <ENTER> to pick. "No sound"
- will give you silence, "IBM sound" will use the internal
- speaker, and "Sound Blaster card" will utilize the Sound
- Blaster card to play digitized sound effects. The card
- selected will become the new default card, and will be
- in effect everytime you load the game.
- * Graphics Type: If you want to switch to a different graphics mode
- (for example, VGA to EGA, due to EGA's better
- resolution), here's where you pick - use the up
- and down arrow keys and <ENTER>. If a listed mode
- is in a darker color, that's because your video card
- cannot support it. The selected mode will become the
- new default.
-
- Pressing <ESC> from this submenu returns you to the main menu.
-
-
-
- ==================
- Other Game Stuff
- ==================
-
- Assorted information which was not covered above: During the game, you
- may press <F1> to pause gameplay. Any other key restarts play. You may
- also press <F2> to toggle sound on or off, regardless of sound type.
-
- I'd love to hear how everyone does with DoubleLink! Comments, complaints,
- high scores - please let me know! (see addresses at the top of this
- document.)
-
- GOOD LUCK!
-
-
-
- ==========
- Appendix
- ==========
-
- Also available from the author:
-
-
- --------------
- <<< SITris >>>
- --------------
-
- A game of strategy. Multiple levels, Sound Blaster support, many game
- play options. Addicting? You bet!
-
-
- ----------------
- <<< Snafu PC >>>
- ----------------
-
- An action game for one or two players. Surround the other players (the
- computer can play as well, for a total of eight players) before they
- surround you! EGA only.
-
-
- If you'd like either game, please contact me (addresses above).
-
-
- DoubleLink bug report: AARGH! No! This game has been debugged fairly
- thorougly, but if you happen upon one, please send it immediately to
- me!