Starting to do TileMap collision.
I'll finish this later, gotta get some sleep.
What I did:
- Checked if a tile is blocked or not.

For "tomorrow": Level.java from line 32 and on...
Collision are detected, yet I have no idea of how to deal with them.
I require assistance :(
I'll make another branch to try the collision method from the tutorial.
No real collisions yet...
This is kinda hard, I think my gravity method might be ruining my
chances of making it work.
Crashes and more crashes. Damn...
Back to square one.
Since there were no tile collisions, I removed all the classes used to
test it, since they failed.
At least my Project is a bit more organized.
Just removing some stuff.