Add new terrain files
Add new Direction enum for SpMove
Add projectile firing projectiles

Still new to process their direction
Add direction to projectiles fired by obstacles
Change projectile orientation with direction
Add getSprite/Action methods on Field/Sprite
Add executed state to sprite actions

In order to execute sprite actions created by field actions (like
projectile move).

There's still an interpoling issue running around.
It's still not a solution.
And the true solution might be completely different
Merge pull request #18 from Bernardstanislas/proj-block-parsing

Proj block parsing