Elixir item causes problems when character tries to move out of game arena

[josuemy]

The game is meant to handle movement through single steps, so the game freezes when the Elixir power (speed increase power) is used and the character makes a move that would get him out of the arena. Issue might be in RogueController.java

Estimate points - 200

[arda-]

W16 OK

[MadRubicant]

F16 OK (200 pts)

[xavierholt]

Would be fixed by #63.