Add a custom signal to broadcast

Changes to the shield

Add variables for

Max shield strength

Shield regeneration rate

Create a set variable to run:

Set shield function whenever changes to the shield are detected

The player should only explode when their shield is exhausted.

Remove call to explode from body entered

Hitting rocks damages the shield

Bigger rocks do more damage

Open enemy_bullet.gd

Add a variable for damage amount

Update the body entered function

Open the enemy script

Update body entered

To damage the player if they hit the enemy

Open the player script

Reset the shield to max

For each new life

Update the process function

To regenerate the shield over time