Allow player to pass in front of and behind some objects

[brylie]

There will be game objects that the player can go behind, such as bushes or fences.

Task

• [ ] the game displays a character with one or more simple objects (e.g., blocks)
• [ ] when the player passes in front of the object (on the Y axis) they appear in front
• [ ] when the player passes behind the object, the object appears in front, with the player remaining visible behind

Resources

• https://docs.godotengine.org/en/stable/classes/class_ysort.html