Old Revision - Last edited by NBOS on 2007-11-13 00:47:04
Spinward Marches Mapping

I am using AstroSynthesis (AS) as the mapping software for my Traveller game. For those who do not know, Traveller uses a flat map of its star systems. I take this to be an artifact of when the game was made, 1977. At that time, personal computing was not so available and sophistcated as what AS offers us now. I have choosen to set the game in  the Spinward Marches.  These have been a lot of false starts and a lot of decisions made along the way. I will cover the pitfalls and their escapes a bit later. 

First to decsions and assumptions behind what I have done. I am trying as much as possible to keep the econimics and feel of the Traveller game. 
I am using spherical subsectors. The arrangement is called Hexagonal Close Packing(HCP). I am dividing up space by placing a series of points in space. The points are placed in accordance to HCP. Each point is the centre of a subsector. Each star is judged to be a member of which ever subsector centre it is closest to. My subsector centres are about 32 light years away from each other. To move from 2-D jump space to 3-D jump space required some scaling of the jump distances. I measured what percentage of a subsector area each of the jump numbers could reach in the cannon Traveller rules. I set the radius of the jump reach in 3-D so that each jump number could reach that same percentage in volume of the subsectors in AS.

I have had multiple times of  scrapping everything and starting from the beginning once again. The best thing I can say is save versions of what you do. Don't be afraid to throuw it all away and start again. It took me a while to work through the problems of the geometry of HCP. I had to re-learn a fair bit of trigonometry. I set up a decent size Excel spreadsheet that deterimnes which stars fall into which subsectors. 

to move star locations so that jump distances are preserved decide how far a system is going to be from it's partner. Maneuver the camera angle so that you are "looking at it" from the direction you want the second system to be. Roll the mouse in until you are the right distance away. Then write down the camera position. That is the location to set the second system at from the properties screen.

Last edited by JustinAkkerman on 2007-11-13 00:47:04
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