use gradle run to launch game

use gradle run --args='--debug' to run in debug mode (currently very limited)

use left-click + mouse move to steer ship

use W to accelerate, S to decelerate

use A to rotate counter-clockwise, D to rotate clockwise

use right-click to fire gun

use space to launch missile

use T to target boulder under cursor or under crosshair

tested with java 1.11

this is work in progress :)