More asteroids

[alex-moon]

• each asteroid is placed randomly inside a 15k x 15k x 15k m^3 cube
• these cubes are drawn in a belt with radius ranging from 30 million to 45 million m (1-2 AU) from the sun
• the belt is also 15 million meters (1 AU) wide vertically (properly speaking it is a torus)
• asteroids range in radius from 5 to 25m (or maybe a bit bigger)
• sun is 140k m wide
• can get to 200k m from sun before exploding
• ship max speed is 10k m per second
• only the nearest nine asteroids (i.e. a 3x3 cube with the cube the ship is presently in at the center) are loaded into memory

[alex-moon]

Check these numbers... it should all be scaled down 10,000 times. 1 AU = 1.5e11 meters = 1.5e7 m in game (that's 15 million) sun diameter = 1.4e9 meters = 1.4e5 m in game (that's 140 thousand) distance between asteroids = 1e9 meters = 1e5 m in game (that's 100 thousand)

100,000 is the diagonal of a cube roughly 58,000 on an edge. sqrt(3 * 58k^2) ~= 100k. So the cubes might have to be 50k x 50k x 50k. That is far too large.

[alex-moon]

There is an outstanding bug on this ticket:

• asteroids are consistently being unloaded as the ship approaches them - this should never happen
• ship fails to land on asteroid, presumably because it's being unloaded after being used