Solving the shadow problem and its alternative

Question

Hello! I was faced with the problem of rendering shadows in Godot and I had a question how exactly can I fix this?
https://imgur.com/JyLgPy8

However, while I was trying to change something, I came across one idea. Make the shadows by hand. Like this:
https://imgur.com/2eOUohF

But the following question arose: how to realize the rotation of this sprite from a light source so that the artificial shadow behaves realistically?

I tried to use Area2D, but this does not work correctly

Comments

You could make vector calculations with the location of the light and the object (e.g. rock.global_position.angletopoint(light.global_position) gives you https://docs.godotengine.org/en/stable/classes/class_vector2.html#class-vector2-method-angle-to), and get the rotation of the object. But it seems complicated - but doable - to get the shadow's rotation and length from these. You would also need to create several shadows based on direction (e.g. one with light between the characters legs and one w/o).

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Is it possible to do this if the player and the light source are created by separate scenes, without creating a global singleton?

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Well I'm not an expert but you could avoid using a global singleton with groups (https://docs.godotengine.org/en/3.2/getting_started/step_by_step/scripting_continued.html#groups).