Interaction basics

scenes/camera_3d.tscn

@@ -0,0 +1,22 @@
+[gd_scene load_steps=3 format=3 uid="uid://c2vxq6kqhris0"]
+
+[ext_resource type="Script" uid="uid://crjao0jjv5yqs" path="res://src/drag/draggable_camera.gd" id="1_v4apc"]
+
+[sub_resource type="CapsuleShape3D" id="CapsuleShape3D_hflkp"]
+radius = 0.1
+height = 10.5
+
+[node name="Camera3D" type="Camera3D"]
+transform = Transform3D(1, 0, 0, 0, 0.86602545, 0.5, 0, -0.5, 0.8660253, 0, 0, 0)
+script = ExtResource("1_v4apc")
+
+[node name="DragRaycast" type="RayCast3D" parent="."]
+target_position = Vector3(0, 0, -10)
+
+[node name="InteractionArea" type="Area3D" parent="."]
+collision_layer = 0
+collision_mask = 4
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="InteractionArea"]
+transform = Transform3D(1, 0, 0, 0, -2.9802322e-08, -1, 0, 1, -2.9802322e-08, 0, 3.5762787e-07, -5.2500005)
+shape = SubResource("CapsuleShape3D_hflkp")

scenes/flask.tscn

@@ -9,6 +9,7 @@ radius = 0.1
 height = 0.9921875
 
 [node name="Flask" type="Area3D"]
+collision_layer = 5
 script = ExtResource("1_0xufn")
 
 [node name="DragArea" type="CollisionShape3D" parent="."]

scenes/lab.tscn

@@ -1,6 +1,6 @@
 [gd_scene load_steps=6 format=3 uid="uid://c7r4rhgj3ucao"]
 
-[ext_resource type="Script" uid="uid://crjao0jjv5yqs" path="res://src/drag/draggable_camera.gd" id="1_hem3r"]
+[ext_resource type="PackedScene" uid="uid://c2vxq6kqhris0" path="res://scenes/camera_3d.tscn" id="1_hflkp"]
 [ext_resource type="PackedScene" uid="uid://dfxlr4svnsdyx" path="res://scenes/ui.tscn" id="3_hflkp"]
 [ext_resource type="Environment" uid="uid://clgblxkcf822n" path="res://assets/Environment.tres" id="8_4kvtl"]
 
@@ -15,12 +15,8 @@ size = Vector3(4, 1, 2)
 transform = Transform3D(2.4088485, 0, 0, 0, 1, 0, 0, 0, 2.8214846, 0, 0, 0)
 mesh = SubResource("BoxMesh_cbcd7")
 
-[node name="Camera3D" type="Camera3D" parent="."]
+[node name="Camera3D" parent="." instance=ExtResource("1_hflkp")]
-transform = Transform3D(1, 0, 0, 0, 0.86602545, 0.5, 0, -0.5, 0.8660253, -1.236948, 2.5364435, 3.1829531)
+transform = Transform3D(1, 0, 0, 0, 0.86602545, 0.49999994, 0, -0.49999997, 0.8660254, -1.236948, 2.5364435, 3.1829531)
-script = ExtResource("1_hem3r")
-
-[node name="DragRaycast" type="RayCast3D" parent="Camera3D"]
-target_position = Vector3(0, 0, -10)
 
 [node name="DirectionalLight3D" type="DirectionalLight3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 0.8403207, 0.5420896, 0, -0.5420896, 0.8403207, 0, 1.9293891, 0)

scenes/substance_jar.tscn

@@ -1,7 +1,8 @@
-[gd_scene load_steps=7 format=3 uid="uid://cw6v8kbi76qak"]
+[gd_scene load_steps=8 format=3 uid="uid://cw6v8kbi76qak"]
 
 [ext_resource type="Script" uid="uid://bjnv2g1ni0525" path="res://src/drag/draggable_object.gd" id="1_o7vug"]
 [ext_resource type="ArrayMesh" uid="uid://dddqboph2ygmw" path="res://assets/meshes/jar.res" id="2_o7vug"]
+[ext_resource type="Script" uid="uid://bl0ojhc0thk1p" path="res://src/interactible/interactible.gd" id="5_o7vug"]
 [ext_resource type="ArrayMesh" uid="uid://dxeseuqcwne1m" path="res://assets/meshes/jar_fill.res" id="6_kfk5m"]
 [ext_resource type="Script" uid="uid://c8epd7gguvyop" path="res://src/substance_holder.gd" id="7_ymvgp"]
 
@@ -13,6 +14,7 @@ height = 0.5024414
 radius = 0.22460938
 
 [node name="Flask" type="Area3D"]
+collision_layer = 5
 script = ExtResource("1_o7vug")
 
 [node name="Jar" type="MeshInstance3D" parent="."]
@@ -30,3 +32,7 @@ shape = SubResource("CylinderShape3D_kfk5m")
 
 [node name="SubstanceData" type="Node" parent="."]
 script = ExtResource("7_ymvgp")
+
+[node name="Interaction" type="ConfirmationDialog" parent="."]
+unique_name_in_owner = true
+script = ExtResource("5_o7vug")

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 interact():
-func _process(delta: float) -> void:
+	interacted.emit(current_draggable)
-	pass
+	cleanup()
+
+func cancel_interaction():
+	cleanup()
+
+func cleanup():
+	current_draggable = null
+	current_interaction = null