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Classic Games (Games)

Pac-Man's Ghost Behavior Algorithms 194

An anonymous reader writes "This article has a very interesting description of the algorithms behind the ghosts in Pac-Man. I had no idea about most of this information, but that's probably because it's difficult to study the ghosts when I die every 30 seconds. Quoting: 'The ghosts are always in one of three possible modes: Chase, Scatter, or Frightened. The "normal" mode with the ghosts pursuing Pac-Man is Chase, and this is the one that they spend most of their time in. While in Chase mode, all of the ghosts use Pac-Man's position as a factor in selecting their target tile, though it is more significant to some ghosts than others. In Scatter mode, each ghost has a fixed target tile, each of which is located just outside a different corner of the maze. This causes the four ghosts to disperse to the corners whenever they are in this mode. Frightened mode is unique because the ghosts do not have a specific target tile while in this mode. Instead, they pseudorandomly decide which turns to make at every intersection.'"
Real Time Strategy (Games)

Blizzard Suing Creators of StarCraft II Hacks 385

An anonymous reader writes with this excerpt from Rock, Paper, Shotgun: "Blizzard have taken the extremely peculiar decision to ban players from playing StarCraft II for using cheats in the single-player game. This meant that, despite cheating no one but themselves, they were locked out of playing the single-player game. Which is clearly bonkers. But it's not enough for the developer. Blizzard's lawyers are now setting out to sue those who create cheats. Gamespot reports that the megolithic company is chasing after three developers of hacks for 'destroying' their online game. It definitely will be in violation of the end user agreement, so there's a case. However, it's a certain element of their claim that stands out for attention. They're claiming using the hacks causes people to infringe copyright: 'When users of the Hacks download, install, and use the Hacks, they copy StarCraft II copyrighted content into their computer's RAM in excess of the scope of their limited license, as set forth in the EULA and ToU, and create derivative works of StarCraft II.'" Blizzard used similar reasoning in their successful lawsuit against the creators of a World of Warcraft bot.
Space

Small Asteroid Making 400,000 Mile Pass By Earth 157

AtariKee writes "Universe Today is reporting that a small 10m asteroid, discovered earlier this month and named 2009 BD, is passing within 400,000 miles of Earth. Although the asteroid poses no threat to the planet, the site reports that the asteroid is still very interesting, as it may be a rare co-orbital asteroid (as in, shares the same orbit as Earth)."
Medicine

Implant Raises Cellular Army To Attack Cancer 193

holy_calamity writes "New Scientist reports on a sneaky new approach to getting the immune system to fight cancer. An implant releases a 'molecular perfume' irresistible to messenger immune cells, which enter the implant where they are given a sample of the cancer's 'scent' and a disperse signal that sends them scurrying to the nearest lymph node. There they convince other immune cells to start attacking anything that matches the sample they picked up."

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