A Rock-Paper-Scissors simulation. The icons move around and the loser in every collision is changed to the winner's type. You can toggle between random or hunt/flee behavior.
The GamePartitioningHelper class splits the game area into sub-segments. At the beginning of every update the game objects are put into lists depending on which rectangles they overlap. This makes it faster to find collision candidates.
The GameObject stores a direction (in radian) for movement, every update that direction is moved a little bit randomly clockwise or counterclockwise. For every update the GameObject's new location is calculated, and if crosses the outside border of the game area a new direction is found, until a valid move can be performed.
F5 : Restart game
F11 : Toggle fullscreen
'+' : Add 100 game objects and restart
'-' : Remove 100 game objects and restart
'I' : toggle intelligent behavior (hunt/flee)