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C port of Ken Thompson's Space Travel

   Author:       Ken Thompson, mohd.akram at outlook.com (Mohamed Akram)
   Uploader:     polluks+aminet sdf lonestar org (Stefan Haubenthal)
   Type:         game/misc
   Requires:     SDL2
   Architecture: ppc-morphos
   URL:          https://en.wikipedia.org/wiki/Space_Travel_(video_game)
   Date:         2023-02-13
   Readme:       http://aminet.net/game/misc/Space_Travel.readme
   Downloads:    5

http://aminet.net/game/misc/Space_Travel.lha

Space Travel

This is a C port of Ken Thompson's

[Space Travel](https://en.wikipedia.org/wiki/Space_Travel_\(video_game\)),

ported from PDP-7 assembly. The original source files are in `src/cmd/st*.s`

in the [pdp7-unix](https://github.com/DoctorWkt/pdp7-unix) repository.

Install

The SDL2 library is required.

Run `make` to build `st`.

Run `make install` to install to `/usr/local/bin`.

Controls

| Key | Action |

|-----|--------------|

| 1 | Quit |

| 2 | New game |

| 3 | Thrust down |

| 4 | Thrust up |

| 5 | Yaw right |

| 6 | Yaw left |

| 7 | Scale up |

| 8 | Scale down |

You can also use the arrow keys for yaw and scale.

Gameplay

For controls, there were several buttons: jet forward, jet back, turn left,

turn right; go up scale on the display, go down scale. The acceleration of

the ship was fixed, but it scaled with the display scale--it was thus fixed

in terms of pixels/sec/sec. Normally the ship was in the center of the screen

and always pointed up; the display showed the plan view of the solar system,

so that the "rotate" controls rotated the solar system around you on the

display.

No relativity; scale up enough and you travel to Pluto in a few seconds. But

don't scale up too much, or you might not find the Solar System again without

restarting.

The object of the game was simply to fly around, get into orbits, land.

"Land" meant to cross the surface with a small enough speed.

*[Space Travel: Exploring the solar system and the

PDP-7](https://www.bell-labs.com/usr/dmr/www/spacetravel.html) by Dennis

Ritchie*

The current dominating attractor, scale, and landing status (L/CL for

landed/crash landed) are displayed at the bottom. The moving dot on the line

below the main view represents the horizontal velocity relative to the current

dominating attractor.

Contents of game/misc/Space_Travel.lha

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[unknown]                    0       0 ****** -lhd- 0000 Feb  9 00:24 st-master
[unknown]                   29      29 100.0% -lh0- c39b Feb  9 00:24 st-master.gitignore
[unknown]                  284     502  56.6% -lh5- 1e87 Feb  9 00:24 st-masterMakefile
[unknown]                 1001    1888  53.0% -lh5- f76c Feb  9 00:24 st-masterREADME.md
[unknown]                 1431    7180  19.9% -lh5- 6cf9 Feb  9 00:24 st-masterfont.h
[unknown]                 6282   17362  36.2% -lh5- ff0a Feb  9 00:24 st-masterst.c
[generic]                50919  144480  35.2% -lh5- 56b6 Feb 12 01:33 st-master/st
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total         7 files   59946  171441  35.0%            Feb 14 02:32