How to make camera movement with middle mouse button?

Help Programming
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4 
@onready var camera=$Camera2D


var pivot_camera=Vector2.ZERO

func _physics_process(delta):
	if Input.is_action_just_pressed("grab_camera"):
		pivot_camera=get_global_mouse_position()
	if Input.is_action_pressed("grab_camera"):
		var gap=pivot_camera-get_global_mouse_position()
		camera.offset+=gap

the grab_camera in InputMap:

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image866×65 4.79 KB

if you want it to go back to original position, just set it from input action just released and set the camera offset again to Vector2.ZERO value