Shield blocking demo added

[guilhermehto]

The enemy can damage the player by touching it (like mario) or by calling a function in the Player for enemies that don't rely on collisions to damage him.

There are two ways the blocking works:

• By physics, by blocking the enemy (or bullets, or arrows, etc..) from reaching to the player
• By code, checking whether or not the player should take damage based on the side from which the hit is coming

[guilhermehto]

I fixed most of the issues you pointed, left some comments on some though. I won't push as it's not done and I'll wait for your input on what to do next. One approach would be to remove the StaticBody from our shield and let is_shield_facing() handle everything.

[NathanLovato]

Answered your comments, you can go ahead :)

[NathanLovato]

If you have the shield facing away from the enemy or you're in contact with the enemy and you remove the shield, you won't take any damage.

[guilhermehto]

Done :)