Zelda Themed Demo

This is a Zelda themed Demo I am making. It is just a learning experience for Greenfoot I am doing. When I gain enough knowledge to make a real game, I will have my own sprites and music. At the moment I am having trouble with collision detection. The built in Methods for it aren't doing what I want them to do.

Controls:
up - up arrow
down - down arrow
left - left arrow
right - right arrow
pause - p
swing sword - space

when I figure out collision detection I will include a version of this demo where you can actually be attacked. but for now this is all I have.
If anyone has some good examples of how collision detection worked for them I would enjoy checking it out.