Monday, February 2, 2009

To dead or not to dead?

Sorry for the lack of posts last week or two folks, just been working silently for the most part but to make up for it I shall be releasing 3 today (well the 3rd is pending whether my mapping algorithm will output successfully..still fixing that part).

The first post is from the discussion last week: To travel in square blocks or to travel naturally without grids and use dead-reckoning. To illustrate what I mean better the picture below shows traveling in blocks (top) and grid-less (below). NOTE: More post after the jump so keep reading!



Using the method up the top it is much easier to map programming-wise; can just throw it all into an array and viola you have a map (well a bit harder than that, but thats for another post). For the bottom method, I would have to use a technique called Dead Reckoning. It has actually been around for a very long time- at least as old as the sixteenth century, as sailors and the like would use it to tell their position. It was later used in air navigation also, not so much these days but the inertial navigation systems in most aircraft rely on it as a base. Although this isn't their primary method of navigation, it is used as support particularly when in harsh conditions where GPS and the like aren't usable. Also in computer games to predict the position of models whilst still waiting for the server to send updates (smoothing out visible lag).
The origin of the name is debated but it either stems from 'deduced reckoning' or is related to mapping without stars/landmarks ('live') and is hence 'dead'.

More Info:
http://en.wikipedia.org/wiki/Dead_reckoning

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