Interaction basics

src/drag/draggable_camera.gd

@@ -2,8 +2,10 @@ extends Camera3D
 
 const SENSITIVITY = 0.01
 
+var interaction_source: DraggableObject
 var plane_position: Vector3
 @onready var drag_raycast: RayCast3D = $DragRaycast
+@onready var interaction_area: Area3D = $InteractionArea
 
 func _process(_delta: float) -> void:
 	drag_raycast.target_position = project_local_ray_normal(get_viewport().get_mouse_position()) * 10.0
@@ -14,3 +16,12 @@ func _input(event: InputEvent) -> void:
 	if Input.is_action_pressed("drag_camera") and event is InputEventMouseMotion:
 		global_position -= Vector3.RIGHT * event.relative.x * SENSITIVITY
 		global_position += Vector3.FORWARD * event.relative.y * SENSITIVITY
+	
+	if event is InputEventMouseButton and event.button_index == MOUSE_BUTTON_LEFT:
+		var areas = interaction_area.get_overlapping_areas()
+		for area in areas:
+			if area == interaction_source:
+				continue
+			area.try_interact(interaction_source)
+			break
+		interaction_source = null

src/drag/draggable_object.gd

@@ -18,7 +18,6 @@ func _process(_delta: float) -> void:
 	if dragged == false:
 		return
 	var camera: Camera3D = get_viewport().get_camera_3d()
-	#var new_position: Vector3 = camera.project_position(get_viewport().get_mouse_position(),(-camera.basis.z).dot(camera.to_local(global_position)))
 	global_position = camera.plane_position
 
 func _input(event: InputEvent) -> void:
@@ -26,6 +25,7 @@ func _input(event: InputEvent) -> void:
 		if mouse_in and event.pressed:
 			dragged = true
 			drag_started.emit()
+			get_viewport().get_camera_3d().interaction_source = self
 		if event.pressed == false:
 			dragged = false
 			drag_ended.emit()

src/interactible/interactible.gd

@@ -1,11 +1,40 @@
 extends ConfirmationDialog
 
+class_name Interactible
+
+@export var interaction_target_groups: PackedStringArray
+@export var instant: bool = false
+
+var current_draggable: DraggableObject
+var current_interaction: Interactible
+
+signal interacted(with: DraggableObject)
 
-# Called when the node enters the scene tree for the first time.
 func _ready() -> void:
-	pass # Replace with function body.
+	if not instant:
+		confirmed.connect(interact)
+		canceled.connect(cancel_interaction)
 
+func try_interact(draggable: DraggableObject) -> void:
+	if draggable.get_node("%Interaction") != null:
+		var interaction: Interactible = draggable.get_node("%Interaction")
+		for group in interaction.get_groups():
+			if group in interaction_target_groups:
+				current_draggable = draggable
+				current_interaction = interaction
+				if instant:
+					interact()
+				else:
+					popup_centered()
+				break
 
-# Called every frame. 'delta' is the elapsed time since the previous frame.
-func _process(delta: float) -> void:
-	pass
+func interact():
+	interacted.emit(current_draggable)
+	cleanup()
+
+func cancel_interaction():
+	cleanup()
+
+func cleanup():
+	current_draggable = null
+	current_interaction = null