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Asked By | Berflatta |
I’ve been trying to implement RigidBody2D drag and drop features, but keep getting the error message “Invalid set index ‘dragging’ (on base: ‘Area2D’) with value of type ‘bool’.” How can I fix this?
I have a control node, a node for the shapes group, a rigid body with collision, and an area2d with collision.
The code for the control node goes as follows:
extends Control
var shape = null
func _input(event):
if event is InputEventMouseButton:
if event.is_pressed():
shape = find_colliding_shape(event.position)
if shape == null:
return
shape.dragging = true
elif shape != null:
shape.dragging = false
shape.apply_impulse(Vector2(0,0), Vector2(0,1))
shape = null
elif event is InputEventMouseMotion and shape != null:
if shape.translate_by == null:
shape.translate_by = Vector2(0,0)
shape.translate_by += event.get_relative()
func find_colliding_shape(pos):
var pointer = get_node("Shapes/Pointer")
pointer.set_position(pos)
var pointer_shape = pointer.shape_owner_get_shape(0,0)
var pointer_transform = pointer.get_transform()
for node in get_node("Shapes").get_children():
var shape = node.shape_owner_get_shape(0,0)
var res = shape.collide(node.get_transform(), pointer_shape, pointer_transform)
if res:
return node
return null
The code for the shape itself, or in this case, the group of shapes, goes as follows:
extends RigidBody2D
var dragging = false
var translate_by = null
func _integrate_forces(state):
if dragging:
state.set_linear_velocity(Vector2(0,0))
state.set_angular_velocity(0)
if translate_by:
var t = state.get_transform()
state.set_transform(Transform2D(t.get_rotation(), t.get_origin() + translate_by))
translate_by = null
Any help is appreciated, thanks!
Since the error indicates an Area2D, but your code shows that your shape is a RigidBody2D, I’d guess your find_colliding_shapes() method is returning the wrong object?
jgodfrey | 2022-07-15 15:40