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- Teraform 1.0
- A SimCity fractal terrain former
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- Copyright 1990 by David M. Hayden
- All rights reserved
-
- INTRODUCTION
-
- Teraform is a public domain utility for the IBM PC and
- compatibles that lets you create new terrains for SimCity.
- These terrains have (in my opinion), a more natural look
- than the ones obtained directly from SimCity. Teraform
- supports cga, ega, vga and (I think) hercules graphics.
- Being unable to access a machine with Hercules graphics,
- I've been unable to test this feature. Teraform is not a
- replacement for the Maxis terrain editor - it has only minor
- editing capabilities. However, it can quickly produce
- interesting, realistic, and challenging terrains for your
- simming pleasure.
-
- Teraform creates its terrains using fractal math. First, it
- creates a topographical map of the area. It then selects
- three topographic "altitudes" which divide the area into
- four regions. Everything below the lowest altitude becomes
- a shipping channel. Everything in the next region up
- becomes water. The next region is open land, and the last
- region is forest. You can change the layout of your terrain
- by raising and lowering the altitudes that determine the
- borders of the regions.
-
- One of teraform's nice features is it's ability to "smooth"
- a terrain. This gives your terrain smooth borders between
- water, sea, and forest instead of the square, pre-bulldozed
- borders one might expect.
-
- Teraform is copyrighted by provided free of charge. You may
- use it and distribute it free of charge. You may NOT sell
- teraform. If your conscience tells you that such a
- fantastically valuable program can't come for free, I will
- accept a donation. I am:
-
- David Hayden
- 6208 Collinsway Road
- Baltimore, Maryland, 21228
- USA
-
- INSTALLATION
-
- Teraform is distributed in a single compressed "zip" file.
- To extract the files, get pkunzip, change directories to
- where you'd like the files to reside (probably the same
- directory where you keep simcity) and execute:
-
- pkunzip teraform
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- Page 1
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- This will extract the following files:
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- teraform.exe
- teraform.dat
- egavga.bgi
- cga.bgi
- herc.bgi
- teraform.doc
-
- Please note that you MUST execute teraform in the directory
- containing teraform.dat and the ".bgi" files.
-
- RUNNING TERAFORM
-
- To run teraform, change directories to the directory
- containing teraform and its associated files and type:
-
- teraform
-
- Teraform will ask you for the name of your city. This is
- the name that appears across the top of the cityform window
- when you run SimCity. Enter a name and press return.
- Teraform then asks for the name of the file where you want
- to store the city. Enter a file name and press return. The
- file should end in the ".cty" extension to keep SimCity
- happy. If you leave the extension off, teraform will add
- ".cty" for you.
-
- Teraform now clears the screen and starts building the
- topographical map of your new city. THIS MAY TAKE SOME
- TIME. Please don't panic if nothing appears to be
- happening. teraform uses lots of math creating the
- topographical map. It may take a full minute on a computer
- without a coprocessor, or less than a second on a fast 386
- with coprocessor or 486.
-
- If more than a minute elapses and nothing has happened, then
- teraform may have incorrectly identified your graphics
- hardware. Teraform tries to determine what graphics
- hardware you are using automatically, but it may guess
- incorrectly. Fortunately, you can override teraform's
- guess. Simply restart teraform with the "/c", "/e", "/h",
- or "/v" option to tell it you are using cga, ega, hercules,
- or vga graphics respectively. For example, to start
- teraform and force it to use ega graphics, type:
-
- teraform /e
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- When teraform completes the topographic map, it tries to
- determine reasonable levels for shipping channels,
- coastlines, and forest lines. It then displays the main
- teraform screen described below.
-
- THE MAIN TERAFORM SCREEN
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- Page 2
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- The main teraform screen displays a map of the current
- terrain, and lists the commands available. The upper left
- portion of the screen shows a map of the terrain. In the
- upper right corner is a legend showing what each color or
- pattern in the map represents. On the bottom of the screen
- is a list you your available commands:
-
- PgUp/PgDn These keys raise and lower the
- water level of the terrain.
- Rasing the water level floods
- portions of the land and
- creates more water. Lowering
- the water level gives you more
- useable land.
-
- UpArrow/DnArrow The up and down arrows keys
- raise and lower the "forest
- level." Everything above a
- certain level on the
- topographical map becomes
- forest. Lowering the forest
- level creates more forest while
- raising it creates less. If
- you try to lower the forest
- level below the water level,
- teraform beeps at you and
- lowers the water level with the
- forest level,
-
- Home/End These keys raise and lower the
- shipping channel level.
- Raising the channel level
- creates more space where ships
- can navigate. Lowering it
- restricts ships. You should be
- sure to have a clear path for
- ships from your land to off the
- terrain.
-
- s The "s" key smooths the
- terrain. You will see the
- terrain change slightly so that
- it can be smoothed, but
- otherwise, the picture will not
- show smooth borders. Please
- note that if you change the
- water or forest level after
- smoothing, you will have to
- resmooth the picture.
-
- w Write the current terrain out
- to a file. This writes the
- current terrain to the file
- name you specified when the
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- Page 3
-
-
-
-
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- program began. You should
- always smooth the file image
- immediately before writing it
- to ensure smooth edges. The
- file is written in SimCity's
- ".cty" format with all
- parameters set to be the same
- as a new city at the "easy"
- level. You can load the new
- city with the "load city"
- command from SimCity's "system"
- menu.
-
- n Create a new terrain. This
- generates a completely new
- topographical map.
-
- q Quit from the program.
-
- COMMAND LINE PARAMETERS
-
- The teraform command line looks like this:
-
- teraform [options] [millennia]
-
- Where "options " can be either of the following:
-
- /c use cga graphics
- /e use ega graphics
- /h use hercules graphics
- /v use vga graphics
-
- and "millennia" tells for how many thousands of years
- teraform should simulate continents smashing into each
- other. The default is 200. Larger values give more jagged
- coastlines but take ore time. Smaller values give less
- jagged but less random coastlines.
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- Page 4
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