One approach you can take is to use a KinematicBody3D for the object that the player can drag, and then use the move_and_slide() function to move it around. Here’s an example of how you can achieve this:
Attach a KinematicBody3D node as a child of your draggable object node.
Set the mass of the KinematicBody3D to 0.
Set the collision shape of the KinematicBody3D to match the shape of your draggable object.
Add a script to the KinematicBody3D node and implement the input handling code to move the node when dragged.
Here’s an example implementation of the drag code in the KinematicBody3D script:
extends KinematicBody3D
var is_dragging = false
func _physics_process(delta):
if is_dragging:
var input_vec = Input.get_action_strength("ui_mouse") * Vector2(1, -1)
var mouse_ray = get_viewport().get_camera().project_ray_origin(get_local_mouse_position())
var new_pos = mouse_ray.get_origin() + mouse_ray.get_direction() * 2
var new_transform = Transform(Basis(), new_pos)
set_transform(new_transform)
move_and_slide(Vector3(), Vector3.UP)
func _input(event):
if event is InputEventMouseButton:
if event.is_pressed() and event.button_index == BUTTON_LEFT:
is_dragging = true
else:
is_dragging = false
In this code, we use Input.get_action_strength(“ui_mouse”) to get the amount of input from the mouse. We then use get_viewport().get_camera().project_ray_origin(get_local_mouse_position()) to get a ray from the camera to the current mouse position in world space. We use this ray to calculate the new position of the KinematicBody3D node, and then set its transform to this new position.
Finally, we call move_and_slide() to update the KinematicBody3D’s position, and pass in a zero velocity vector and the UP vector as arguments to ensure that it slides along the ground.
