Maps are now made with Tiled, a free map editor.

Get it here http://www.mapeditor.org/.
FPS and inventory, i.a., are now shown in the window.

Press F to toggle FPS view on/off.
Press I to toggle inventory view on/off.
Press G to toggle ghost mode on/off.
Press S to reveal whole map and hide it again.
Press C to create a brick wall in the current tile.
Press D to destroy the object in the current tile.
Have fun!
Made gsm private, and class final.
Made class final.
Deleted an unused import.
Water movementModifier is now 0.5.
Small changes.

getItems() now returns items.keySet().
removeItem(item) is same as removeItem(item, 1).
Increased turning speed to 4, and added a Random.
gradle
Updated .gitignore