Untiled ship movement

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Ships are currently planned to moved only between tiles. This is not
natural visually. One alternative is to have ships move smoothly with a
position within a tile. Some required steps to achieve this:

* Ships should accept any water point on the globe as a destination
* Ship "trace" function to see how far a ship can go in one direction
  before colliding with land or another vessel
* Path-finding for untiled ships that does not direct a ship to travel to
  tile centers but fluidly moves the ship to its destination
* Render a ship's fluid path instead of tiles traveled over
* Resolve any network communication issues for fluid ship positioning

Original issue reported on code.google.com by risu...@gmail.com on 14 Jul 2008 at 12:35

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Enhancement -> Feature

Original comment by risu...@gmail.com on 17 Jul 2008 at 11:22

• Added labels: Type-Feature
• Removed labels: type-enhancement

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Enhancement -> Feature (again)

Original comment by risu...@gmail.com on 17 Jul 2008 at 11:25

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Contribute tag

Original comment by risu...@gmail.com on 17 Jul 2008 at 11:30

• Added labels: Contribute
• Removed labels: difficulty-hard

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Original comment by risu...@gmail.com on 18 Jul 2008 at 2:11

• Added labels: For-1.0
• Removed labels: release-1.0

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Original comment by gar...@gmail.com on 1 Nov 2008 at 5:09

• Added labels: Easy
• Removed labels: Contribute

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Original comment by gar...@gmail.com on 1 Nov 2008 at 5:09

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Original comment by gar...@gmail.com on 1 Nov 2008 at 5:11

• Removed labels: Easy