Drag and drop controller
An asset by programaths
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Quick Information
This script node permit to handle drag and drop of any nodes in a specific group of your choice.It handles correctly nodes that overlaps by picking the topmost one. It will also raise nodes that are bellow other nodes so they "fly over" when you drag them.
Use
- Add the
DragDropControllernode in your scene. - In the inspector, fill in Drag Group with the name of the group containing nodes you want to be draggable, by default, the group is named "draggable".
- (optional) In the node that can be dragged, you can create two methods :
on_dropandon_drag_start
on_drop
Called when the node is dropped.
Return "false" to prevent drop.
Do not return anything (no return in your function) or return true to allow drop.
Here is an example of implementation to check if you are dropping in a free space:
onready var previous_position = position
func on_drop():
position = position.snapped(Vector2(64,64))
yield(get_tree(),"idle_frame")
yield(get_tree(),"idle_frame")
if get_overlapping_areas().size()>0:
print("col!")
position = previous_position
else:
print("no col")
previous_position = position
on_drag_start
Called when the node begin to be dragged. (if multiple nodes are stacked, only the topmost node will be dragged)
This script node permit to handle drag and drop of any nodes in a specific group of your choice.
It handles correctly nodes that overlaps by picking the topmost one. It will also raise nodes that are bellow other nodes so they "fly over" when you drag them.
Reviews
Quick Information
This script node permit to handle drag and drop of any nodes in a specific group of your choice.It handles correctly nodes that overlaps by picking the topmost one. It will also raise nodes that are bellow other nodes so they "fly over" when you drag them.