Separating player movement from control handling in Godot 2D
An important part of object oriented programming is separating responsibilities into individual scripts/objects. That's the "single responsibility principle."
In video games, we often encounter scenarios where the game should control the character's movement instead of the player. For example, in a platformer game, upon reaching the level goal, we may want the game to take control of the character instead of the player. Or in an RPG, we may want to have the game move the player to a certain position and have input control menu navigation, instead of the player sprite.
The way to achieve this is to have the player's script written just like any other character script (e.g., enemies, NPCs, etc.). Then we can write a character controller script that calls functions on the player script to move the player, if that's the type of control we want. Otherwise, we have the character controller control the player automatically, or have the character controller direct player input to the right object.
This video shows how this can be done using Godot in 2D. I hope this helps!