[DAY 3]

- Update:
+ Enemies changing sides when taking damage fixed;
+ HUD fixed (Thanks to this tutorials: Godot 3.2: Let's Build a 2D Platformer!: Part 12 and Creating a circular meter using a single Godot Control Node);
+ Life bar updated;
- Bugs:
+ Enemy movement after taking damage can move him outside the screen (re-implementation seems necessary. Tried apply a knock back effect, and things don't went well, to say at least...).
- Next Objectives:
+ Weapon change;
+ Fixing enemy;
+ Working on better graphics;
+ Implementing a dialogue box system;
+ Adding sounds (Background music, enemies attacks, player attack);
