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- .IF DSK1.C3
-
- ^^^^^^^^^TEXTWARE, SOFTWARE, and ELSEWHERE
-
- Goings-on with the TI-99/4A
-
-
- ^^^^^^^^^^^^^^^^^^ by JACK SUGHRUE
-
-
- One of the good feelings I have about STIMULATING SIMULATIONS FOR
- THE TI-99/4A by C.W.Engel (105 pp, Hayden Book Company, Hasbrouck
- Heights, N.J., $7.95) is the assumptions the author makes about the
- reader. He assumes you want to type in programs to get programs into
- your library. That's obvious. That's why we plunk down the bucks.
- (About 53 cents a program, by the way.)
- But Engel assumes further that you're going to take the time and
- trouble to figure out how the simulations are created and you're going to
- enhance them to suit your own needs.
- He's right, too.
- Once you start into this book, it is hard not to begin adding,
- fiddling, manipulating, deleting, changing. And it's easy because of the
- excellent structure. Each of the simulations begins with a scenario
- explaining the program. Many of these scenarios have charts and diagrams
- which I found lucid and helpful and, in some cases, absolutely essential.
-
- The scenarios (running from two short paragraphs to 14 long ones) are
- followed by sample runs. These printouts show how the program operates
- (or how it should operate if yours has bugs). This is followed by a list
- of all the variables used (I wish all program books would do this.) and
- by a complete program listing ready for typing. These in turn are
- followed by two batches of modifications: minor and major. Toughies,
- these. There is usually an illustration or game board or display
- interspersed among the items above. They add to the overall nice effect,
- and, in some instances, are required for play.
- The final item in each section is a flowchart of the simulation.
- I'm not a big flowchart person (no more than I approve of outlines
- for papers), but as they come after all the other stuff, they do prove
- helpful in understanding the process of the program. It does make it
- easier to understand, too.
- We'll follow one through in a couple minutes, but first I want to
- discuss the programs and the book.
- The book is 6X9, a decent size. The text type is tiny, so I'm glad I
- have bifocals. (When I bought this book last year, I didn't have
- bifocals, so I couldn't deal with it and its relationship to distant
- keyboad, screen, printer, and so on. Thanks to Good Ol' Charlie Aitchue,
- I have overcome. Have dug out book. Have enjoyed.
- Except for a few things.
- One, I hate computer books without ring binders.
- Two, I loathe T.I. books which do not have their listings in
- resequenced order by 10s.
- Three, I despise books which aren't carefully proofread in the
- listings (They should just be printed out directly from the program with
- LIST "PIO" or LIST "RS232". What's so hard about that? The books are
- all offset anyway, so the publisher can be guaranteed a perfect copy.
- And STIMULATING SIMULATIONS is guilty on all three counts. But
- forgetting the bad stuff for a moment, in addition to the above goodies,
- which most program-listing books do not have, this one starts off with
- two pages which describe each of the programs in the book in a clear
- paragraph which includes the number of lines. Hey! Here's one that's
- only 63 lines. Sounds good, too. I'll do that one first and the 225
- liner last.
- Can't do that with any other books.
-
- Be wary, Future Purchaser. You are not buying a book of arcade games
- here. They are not loaded with graphics and cutesy melodies and neon
- lights. You can add the whistles and grunts yourself later. Along with
- the flying orangutans. But they aren't there in these programs.
- Here is what is there:
- 3 Soccer Programs (requiring Extended BASIC) [The other 12 may run in
- BASIC or X.]
- Art Auction - Buy and sell paintings to make a profit.
- Monster Chase - A graphic maze-like (not too much thinking) chase.
- Lost Treasure - A short simulation of treasure finding on a map/grid.
- Gone Fishing - Catch lots of fish; avoid storms, wrecks, etc.
- Space Flight - Deliver medical supplies to distant planet.
- Forest Fire - Extinguish a forest fire with backfires and chemicals.
- Nautical Navigation - Navigate sailboat to 3 different islands.
- Business Management - Maximize profits by clever use of buying and
- finishing raw materials.
- Rare Birds - Identify as many birds as possible. This is weird.
- Diamond Thief - You find museum diamond thief from 5 suspects.
- The Devil's Dungeon - This one's been around for a long time. It's a
- fantasy adventure in a bottomless cave full of poison gases, monsters,
- demons, and gold. What one won't do for gold!
- and
- Life - "Beginning as an uneducated bum whose only source of income is
- mugging, the player advances through education and luck to become an
- executive who earns lots of money." I would have said that if Engel
- didn't.
-
- Interesting selection of simulations, eh?
-
- Let's look into one: Gone Fishing. (Not my favorite, but a good
- one.)
- You're going on a fishing trip. You may use the 8X8 grid in the book
- to place markers on. You travel N,S,E,W, or F (to stay fishing in the
- same place or square). If you keep fishing the same spot you will not
- succeed, as each square has a predetermined density. Moving can cause
- unexpected events (not good) to happen. Fishing too long will probably
- result in your being caught in an afternoon storm. You don't want to get
- too far from the dock, as you have a time limit, but the bigger fish are
- out in the farthest reaches of the pond.
- Decisions. Decisions.
-
- That's what simulations are all about.
-
- You can change anything, of course. Grid size could make things
- easier or harder. Line 30 sets the probability of catching fish within a
- square. Line 40 sets the maximum density of fish in a square. Line 150
- sets the maximum time for fishing. Storms - Line 330. Rating scale as
- fisherman - 540.
-
- Major changes could be to add different kinds of hazards (whales,
- reefs, UFOs); utilize sonar devices to help locate fish; use fuel to run
- the boat; and so on.
-
- The fun with this book is what happens AFTER you've typed in the
- program.
-
- [Jack Sughrue, Box 459, E.Douglas, MA 01516]
-
- ***************
-
- If any newsletter editor prints these articles, please put me on your
- mailing list. - Thanks JS.
-
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