Merge pull request #119 from Nitwel/fixes

Implement new hand collision system

app/content/system/hands/hands.gd

@@ -32,7 +32,7 @@ func _ready():
 	}
 
 	touch = Touch.new(fingers)
-	collide = Collide.new(hand_left, hand_right, fingers)
+	collide = Collide.new(hand_left, hand_right, $XRHandLeft/IndexTip/TouchArea, $XRHandRight/IndexTip/TouchArea)
 	add_child(touch)
 	add_child(collide)
 

app/content/system/hands/hands.tscn

@@ -53,7 +53,7 @@ transform = Transform3D(1, -7.45058e-09, -2.22045e-16, 7.45058e-09, 1, 0, 0, 0,
 shape = SubResource("CapsuleShape3D_dopke")
 
 [node name="ThumbTip" type="BoneAttachment3D" parent="XRHandLeft"]
-transform = Transform3D(0.937246, 0.0284254, -0.347508, 0.0184905, 0.991216, 0.130949, 0.348178, -0.129157, 0.928487, 0.0498668, 0.0560917, -0.112777)
+transform = Transform3D(0.937246, 0.0284254, -0.347508, 0.0184905, 0.991216, 0.130949, 0.348178, -0.129157, 0.928488, 0.0498668, 0.0560917, -0.112777)
 bone_name = "Thumb_Tip_L"
 bone_idx = 4
 use_external_skeleton = true
@@ -63,7 +63,7 @@ external_skeleton = NodePath("../left_hand/Armature_001/Skeleton3D")
 gizmo_extents = 0.02
 
 [node name="MiddleTip" type="BoneAttachment3D" parent="XRHandLeft"]
-transform = Transform3D(0.0812012, -0.650531, -0.755125, 0.996576, 0.064817, 0.051326, 0.0155558, -0.756708, 0.653567, 0.032112, 0.00654224, -0.171612)
+transform = Transform3D(0.0812012, -0.650531, -0.755125, 0.996577, 0.064817, 0.051326, 0.0155558, -0.756708, 0.653568, 0.032112, 0.00654224, -0.171612)
 bone_name = "Middle_Tip_L"
 bone_idx = 14
 use_external_skeleton = true
@@ -90,6 +90,7 @@ collision_mask = 8
 [node name="CollisionShape3D" type="CollisionShape3D" parent="XRHandLeft/AnimatableBody3D"]
 transform = Transform3D(1, 1.05818e-16, 4.75779e-13, -2.32831e-10, 1, -1.77636e-14, -4.97946e-12, 1.77636e-15, 1, -7.7486e-07, 1.33878e-09, -0.030436)
 shape = SubResource("BoxShape3D_1pxrt")
+disabled = true
 
 [node name="RemoteTransform3D" type="RemoteTransform3D" parent="XRHandLeft"]
 remote_path = NodePath("../AnimatableBody3D")
@@ -106,7 +107,7 @@ transform = Transform3D(1, 0, 4.7579e-13, 0, 1, 0, -1.34149e-12, 1.77636e-15, 1,
 material_override = SubResource("StandardMaterial3D_n27ki")
 
 [node name="IndexTip" type="BoneAttachment3D" parent="XRHandRight"]
-transform = Transform3D(0.19221, 0.669966, 0.717078, -0.091543, -0.715277, 0.69282, 0.977075, -0.19881, -0.0761527, -0.0345978, -0.164767, -0.0355401)
+transform = Transform3D(0.19221, 0.669966, 0.717079, -0.091543, -0.715277, 0.69282, 0.977075, -0.19881, -0.0761527, -0.0345977, -0.164767, -0.0355401)
 bone_name = "Index_Tip_R"
 bone_idx = 9
 use_external_skeleton = true
@@ -136,7 +137,7 @@ external_skeleton = NodePath("../right_hand/Armature/Skeleton3D")
 gizmo_extents = 0.02
 
 [node name="MiddleTip" type="BoneAttachment3D" parent="XRHandRight"]
-transform = Transform3D(0.0812011, 0.650531, 0.755126, -0.0155557, -0.756708, 0.653568, 0.996576, -0.0648169, -0.0513262, -0.032112, -0.171612, -0.00654216)
+transform = Transform3D(0.0812011, 0.650531, 0.755126, -0.0155557, -0.756709, 0.653568, 0.996576, -0.0648169, -0.0513262, -0.032112, -0.171612, -0.00654216)
 bone_name = "Middle_Tip_R"
 bone_idx = 14
 use_external_skeleton = true
@@ -163,6 +164,7 @@ collision_mask = 8
 [node name="CollisionShape3D" type="CollisionShape3D" parent="XRHandRight/AnimatableBody3D"]
 transform = Transform3D(1, 0, 4.75779e-13, -2.32831e-10, 1, -1.77636e-14, -4.97946e-12, 1.77636e-15, 1, -7.7486e-07, 1.33878e-09, -0.030436)
 shape = SubResource("BoxShape3D_1pxrt")
+disabled = true
 
 [node name="RemoteTransform3D" type="RemoteTransform3D" parent="XRHandRight"]
 remote_path = NodePath("../AnimatableBody3D")

app/content/system/hands/tip_collider.tscn

@@ -0,0 +1,18 @@
+[gd_scene load_steps=2 format=3 uid="uid://cu33x58yh0mhy"]
+
+[sub_resource type="SphereShape3D" id="SphereShape3D_65tyn"]
+radius = 0.01
+
+[node name="TipCollider" type="RigidBody3D"]
+collision_layer = 4
+collision_mask = 4
+axis_lock_angular_x = true
+axis_lock_angular_y = true
+axis_lock_angular_z = true
+mass = 0.01
+gravity_scale = 0.0
+linear_damp = 50.0
+angular_damp = 50.0
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="."]
+shape = SubResource("SphereShape3D_65tyn")

app/content/system/hands/touch_area.gd

@@ -1,18 +0,0 @@
-extends Area3D
-class_name TouchBody3D
-
-@export var plane = Plane.PLANE_XZ
-
-func _ready():
-	set_collision_layer_value(1, false)
-	set_collision_layer_value(3, true)
-
-	var collisionShape = null
-
-	for child in get_children():
-		if child is CollisionShape3D:
-			collisionShape = child
-			break
-
-	if collisionShape != null:
-		plane.d = collisionShape.shape.size.y / 2 + collisionShape.position.y

app/content/ui/components/button/button.gd

@@ -130,25 +130,49 @@ func _on_touch_enter(event: EventTouch):
 	if event.target != finger_area:
 		return
 
-	AudioPlayer.play_effect("click")
-	_touch_change(event)
-
-func _on_touch_move(event: EventTouch):
-	_touch_change(event)
-
-func _on_touch_leave(_event: EventTouch):
-	if toggleable:
-		active = !active
-		if active:
-			on_button_up.emit()
-		else:
-			on_button_down.emit()
-
-func _touch_change(event: EventTouch):
 	if disabled:
 		event.bubbling = false
 		return
 
+	AudioPlayer.play_effect("click")
+
+	if toggleable:
+		active = !active
+		if active:
+			on_button_down.emit()
+		else:
+			on_button_up.emit()
+
+		return
+
+	active = true
+	on_button_down.emit()
+
+	_touch_change(event)
+
+func _on_touch_move(event: EventTouch):
+	if disabled:
+		event.bubbling = false
+		return
+
+	if toggleable:
+		return
+
+	_touch_change(event)
+
+func _on_touch_leave(event: EventTouch):
+	if disabled:
+		event.bubbling = false
+		return
+
+	if toggleable:
+		return
+
+	active = false
+	on_button_up.emit()
+
+func _touch_change(event: EventTouch):
+
 	var pos = Vector3(0, 1, 0)
 	for finger in event.fingers:
 		var finger_pos = to_local(finger.area.global_position)
@@ -160,14 +184,4 @@ func _touch_change(event: EventTouch):
 
 	var percent = clamp((button_center + button_height / 2 - pos.y) / (button_height / 2), 0, 1)
 		
-	if !active&&percent < 1:
-		on_button_down.emit()
-	elif active&&percent >= 1:
-		on_button_up.emit()
-		
 	update_animation(percent)
-
-	if toggleable:
-		return
-	
-	active = percent < 1

app/content/ui/components/button/button.tscn

@@ -1,9 +1,8 @@
-[gd_scene load_steps=8 format=3 uid="uid://bsjqdvkt0u87c"]
+[gd_scene load_steps=7 format=3 uid="uid://bsjqdvkt0u87c"]
 
 [ext_resource type="Script" path="res://content/ui/components/button/button.gd" id="1_74x7g"]
 [ext_resource type="ArrayMesh" uid="uid://iv4lk77axlk4" path="res://assets/immersive_home/button.obj" id="2_cve3l"]
 [ext_resource type="Material" uid="uid://bujy3egn1oqac" path="res://assets/materials/pri-500.material" id="2_wx7av"]
-[ext_resource type="Script" path="res://content/system/hands/touch_area.gd" id="4_b27lx"]
 
 [sub_resource type="BoxShape3D" id="BoxShape3D_xwopm"]
 size = Vector3(0.05, 0.02, 0.05)
@@ -11,8 +10,8 @@ size = Vector3(0.05, 0.02, 0.05)
 [sub_resource type="BoxShape3D" id="BoxShape3D_bqjii"]
 size = Vector3(0.0501598, 0.0390937, 0.0501598)
 
-[sub_resource type="BoxShape3D" id="BoxShape3D_dfbn3"]
+[sub_resource type="BoxShape3D" id="BoxShape3D_vkbuh"]
-size = Vector3(0.05, 0.029126, 0.05)
+size = Vector3(0.05, 0.03, 0.05)
 
 [node name="Button" type="Node3D" groups=["ui_focus"]]
 script = ExtResource("1_74x7g")
@@ -51,9 +50,10 @@ monitoring = false
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.00975001, 0)
 shape = SubResource("BoxShape3D_bqjii")
 
-[node name="TouchBody3D" type="Area3D" parent="."]
+[node name="TouchBody" type="StaticBody3D" parent="."]
-script = ExtResource("4_b27lx")
+collision_layer = 4
+collision_mask = 0
 
-[node name="CollisionShape3D" type="CollisionShape3D" parent="TouchBody3D"]
+[node name="CollisionShape3D" type="CollisionShape3D" parent="TouchBody"]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.00453955, 0)
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.005, 0)
-shape = SubResource("BoxShape3D_dfbn3")
+shape = SubResource("BoxShape3D_vkbuh")

app/content/ui/components/input/input.tscn

@@ -6,11 +6,11 @@
 
 [sub_resource type="BoxMesh" id="BoxMesh_kjbca"]
 resource_local_to_scene = true
-size = Vector3(0.2, 0.006, 0.03)
+size = Vector3(0.15, 0.006, 0.03)
 
 [sub_resource type="BoxShape3D" id="BoxShape3D_x4yp8"]
 resource_local_to_scene = true
-size = Vector3(0.2, 0.006, 0.03)
+size = Vector3(0.15, 0.006, 0.03)
 
 [sub_resource type="BoxMesh" id="BoxMesh_2736g"]
 size = Vector3(0.001, 0.02, 0.001)
@@ -53,7 +53,7 @@ _data = {
 }
 
 [node name="Input" type="StaticBody3D" groups=["ui_focus"]]
-collision_layer = 2
+collision_layer = 6
 collision_mask = 0
 script = ExtResource("1_uml3t")
 text = "Example"
@@ -68,7 +68,7 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.003, 0)
 shape = SubResource("BoxShape3D_x4yp8")
 
 [node name="Label" type="Label3D" parent="."]
-transform = Transform3D(1, 0, 0, 0, -4.37114e-08, 1, 0, -1, -4.37114e-08, -0.098, 0.00618291, 0)
+transform = Transform3D(1, 0, 0, 0, -4.37114e-08, 1, 0, -1, -4.37114e-08, -0.073, 0.00618291, 0)
 pixel_size = 0.001
 text = "Example"
 font = ExtResource("3_ij5fh")

app/content/ui/components/notification/notification.tscn

@@ -161,6 +161,8 @@ _data = {
 script = ExtResource("1_yw3yb")
 
 [node name="AnimationNode" type="StaticBody3D" parent="."]
+collision_layer = 6
+collision_mask = 0
 
 [node name="MeshInstance3D" type="MeshInstance3D" parent="AnimationNode"]
 material_override = ExtResource("2_5b8oo")
@@ -172,7 +174,6 @@ shape = SubResource("BoxShape3D_m4d21")
 [node name="Text" type="Label3D" parent="AnimationNode"]
 transform = Transform3D(1, 0, 0, 0, -4.37114e-08, 1, 0, -1, -4.37114e-08, -0.08, 0.006, 0)
 pixel_size = 0.001
-text = "Example Text"
 font_size = 10
 outline_size = 0
 horizontal_alignment = 0
@@ -182,7 +183,7 @@ width = 190.0
 [node name="Icon" type="Label3D" parent="AnimationNode"]
 transform = Transform3D(1, 0, 0, 0, -4.37114e-08, 1, 0, -1, -4.37114e-08, -0.1, 0.006, 0)
 pixel_size = 0.001
-text = "check_circle"
+text = "info"
 font = ExtResource("3_1ljpc")
 font_size = 24
 outline_size = 0

app/content/ui/components/slider/slider.tscn

@@ -65,6 +65,8 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.00353538, 0)
 mesh = SubResource("CylinderMesh_v34nn")
 
 [node name="CollisionBody" type="StaticBody3D" parent="."]
+collision_layer = 6
+collision_mask = 6
 
 [node name="CollisionShape3D" type="CollisionShape3D" parent="CollisionBody"]
 shape = SubResource("BoxShape3D_h1mn1")
@@ -73,7 +75,7 @@ shape = SubResource("BoxShape3D_h1mn1")
 transform = Transform3D(1, 0, 0, 0, -4.37114e-08, 1, 0, -1, -4.37114e-08, 0.105, 0, 0)
 visible = false
 pixel_size = 0.001
-text = "0.2"
+text = "0.2 "
 font_size = 10
 outline_size = 4
 horizontal_alignment = 0

app/content/ui/menu/menu.tscn

@@ -1,9 +1,8 @@
-[gd_scene load_steps=21 format=3 uid="uid://c3kdssrmv84kv"]
+[gd_scene load_steps=19 format=3 uid="uid://c3kdssrmv84kv"]
 
 [ext_resource type="Script" path="res://content/ui/menu/menu.gd" id="1_ng4u3"]
 [ext_resource type="Material" uid="uid://bnwimm214q67g" path="res://assets/materials/sec-500.material" id="2_0x5at"]
 [ext_resource type="Script" path="res://content/functions/movable.gd" id="2_8coxu"]
-[ext_resource type="Script" path="res://content/system/hands/touch_area.gd" id="2_fxtnc"]
 [ext_resource type="Script" path="res://content/ui/components/tabs/tabs.gd" id="4_eavfx"]
 [ext_resource type="PackedScene" uid="uid://crrb0l3ekuotj" path="res://content/ui/menu/edit/edit_menu.tscn" id="4_r2raj"]
 [ext_resource type="PackedScene" uid="uid://bsjqdvkt0u87c" path="res://content/ui/components/button/button.tscn" id="5_w4i01"]
@@ -13,21 +12,18 @@
 [ext_resource type="PackedScene" uid="uid://c01gkeldvjwtr" path="res://content/ui/menu/room/room_menu.tscn" id="10_u4i1x"]
 [ext_resource type="PackedScene" uid="uid://c6r4higceibif" path="res://content/ui/menu/settings/settings_menu.tscn" id="11_7wm6b"]
 
-[sub_resource type="BoxShape3D" id="BoxShape3D_fgcdq"]
-size = Vector3(0.38, 0.0634595, 0.32)
-
 [sub_resource type="BoxShape3D" id="BoxShape3D_e1esh"]
 size = Vector3(0.38, 0.0128076, 0.32)
 
+[sub_resource type="BoxShape3D" id="BoxShape3D_6xn1i"]
+size = Vector3(0.3, 0.0264844, 0.3)
+
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_ti5t2"]
 
 [sub_resource type="BoxMesh" id="BoxMesh_08du6"]
 material = SubResource("StandardMaterial3D_ti5t2")
 size = Vector3(0.3, 0.01, 0.3)
 
-[sub_resource type="ConvexPolygonShape3D" id="ConvexPolygonShape3D_mgnm0"]
-points = PackedVector3Array(-0.15, -0.005, -0.15, -0.15, 0.005, -0.15, 0.15, -0.005, -0.15, -0.15, -0.005, 0.15, -0.15, 0.005, 0.15, 0.15, 0.005, -0.15, 0.15, -0.005, 0.15, 0.15, 0.005, 0.15)
-
 [sub_resource type="Animation" id="Animation_61md4"]
 length = 0.001
 tracks/0/type = "bezier"
@@ -166,17 +162,10 @@ _data = {
 }
 
 [node name="Menu" type="StaticBody3D"]
+collision_layer = 2
+collision_mask = 2
 script = ExtResource("1_ng4u3")
 
-[node name="TouchBody3D" type="Area3D" parent="."]
-collision_layer = 4
-collision_mask = 0
-script = ExtResource("2_fxtnc")
-
-[node name="CollisionShape3D" type="CollisionShape3D" parent="TouchBody3D"]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.02, -0.0282703, 2.98023e-08)
-shape = SubResource("BoxShape3D_fgcdq")
-
 [node name="CollisionShape3D" type="CollisionShape3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.02, -0.00286309, 1.49012e-08)
 shape = SubResource("BoxShape3D_e1esh")
@@ -186,6 +175,12 @@ script = ExtResource("2_8coxu")
 
 [node name="AnimationContainer" type="StaticBody3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.2, 0, -0.15)
+collision_layer = 6
+collision_mask = 6
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="AnimationContainer"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.21, -0.00824219, 0.15)
+shape = SubResource("BoxShape3D_6xn1i")
 
 [node name="Background" type="MeshInstance3D" parent="AnimationContainer"]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.21, 0, 0.15)
@@ -193,10 +188,6 @@ material_override = ExtResource("2_0x5at")
 mesh = SubResource("BoxMesh_08du6")
 skeleton = NodePath("../..")
 
-[node name="CollisionShape3D" type="CollisionShape3D" parent="AnimationContainer"]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.21, 0, 0.15)
-shape = SubResource("ConvexPolygonShape3D_mgnm0")
-
 [node name="Tabs" type="Node3D" parent="AnimationContainer" node_paths=PackedStringArray("initial_selected")]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.06, 0, 0)
 script = ExtResource("4_eavfx")

app/content/ui/onboarding/onboarding.tscn

@@ -11,6 +11,8 @@ size = Vector3(0.5, 0.3, 0.01)
 size = Vector3(0.5, 0.3, 0.01)
 
 [node name="Onboarding" type="StaticBody3D"]
+collision_layer = 6
+collision_mask = 6
 script = ExtResource("1_k4yvw")
 
 [node name="Label3D2" type="Label3D" parent="."]

app/lib/utils/touch/collide.gd

@@ -2,64 +2,58 @@ extends Node3D
 ## Calculates collision for fingers and FingerAreas
 
 const Finger = preload ("res://lib/utils/touch/finger.gd")
+const TipCollider = preload ("res://content/system/hands/tip_collider.tscn")
 
-## Record<Finger.Type, Area3D>
+var tip_right: Node3D
-var finger_areas: Dictionary
+var tip_left: Node3D
+
+var tip_left_body: RigidBody3D
+var tip_right_body: RigidBody3D
 
-## Record<TouchBody3D, Array<Finger.Type>>
-var bodies_entered = {}
 var hand_left: Node3D
 var hand_right: Node3D
+var hand_left_mesh: MeshInstance3D
+var hand_right_mesh: MeshInstance3D
 
-func _init(hand_left: OpenXRHand, hand_right: OpenXRHand, finger_areas: Dictionary):
+func _init(hand_left: OpenXRHand, hand_right: OpenXRHand, tip_left: Node3D, tip_right: Node3D):
-	self.finger_areas = finger_areas
+	self.tip_right = tip_right
-	self.hand_left = hand_left.get_node("left_hand/Armature_001/Skeleton3D/vr_glove_left_slim")
+	self.tip_left = tip_left
-	self.hand_right = hand_right.get_node("right_hand/Armature/Skeleton3D/vr_glove_right_slim")
+	self.hand_left = hand_left
+	self.hand_right = hand_right
+	self.hand_left_mesh = hand_left.get_node("left_hand/Armature_001/Skeleton3D/vr_glove_left_slim")
+	self.hand_right_mesh = hand_right.get_node("right_hand/Armature/Skeleton3D/vr_glove_right_slim")
 
 func _ready():
-	for finger_type in finger_areas.keys():
+	var body_container = Node3D.new()
+	body_container.name = "HandBodyContainer"
 
-		finger_areas[finger_type].area_entered.connect(func(body):
+	get_node("/root/Main/").add_child.call_deferred(body_container)
-			if body is TouchBody3D:
-				_on_body_entered(finger_type, body)
-		)
 
-		finger_areas[finger_type].area_exited.connect(func(body):
+	tip_right_body = TipCollider.instantiate()
-			if body is TouchBody3D:
+	tip_right_body.global_position = tip_right.global_position
-				_on_body_exited(finger_type, body)
+	body_container.add_child(tip_right_body)
-		)
+
+	tip_left_body = TipCollider.instantiate()
+	tip_left_body.global_position = tip_left.global_position
+	body_container.add_child(tip_left_body)
 
 func _physics_process(_delta):
-	hand_left.position = Vector3.ZERO
+		_move_tip_rigidbody_to_bone(tip_left_body, tip_left)
-	hand_right.position = Vector3.ZERO
+		_move_tip_rigidbody_to_bone(tip_right_body, tip_right)
 
-	for body in bodies_entered.keys():
+func _move_tip_rigidbody_to_bone(tip_rigidbody: RigidBody3D, tip_bone: Node3D):
-		var fingers = bodies_entered[body]
+	if tip_rigidbody.is_inside_tree() == false:
+		return
 
-		for finger in fingers:
+	var move_delta: Vector3 = tip_bone.global_position - tip_rigidbody.global_position
-			if finger == Finger.Type.INDEX_LEFT:
-				var start_pos = finger_areas[finger].get_parent().global_position
-				var end_pos = body.to_global(body.plane.project(body.to_local(start_pos)))
 
-				hand_left.global_position = end_pos + (hand_left.global_position - start_pos)
+	hand_right_mesh.global_position = hand_right.global_position - move_delta
 
-			elif finger == Finger.Type.INDEX_RIGHT:
+	# Snap back the rigidbody if it's too far away.
-				var start_pos = finger_areas[finger].get_parent().global_position
+	if move_delta.length() > 0.1:
-				var end_pos = body.to_global(body.plane.project(body.to_local(start_pos)))
+		tip_rigidbody.global_position = tip_bone.global_position
+		return
 
-				hand_right.global_position = end_pos + (hand_right.global_position - start_pos)
+	var coef_force = 30.0
-
+	tip_rigidbody.apply_central_force(move_delta * coef_force)
-func _on_body_entered(finger_type, body):
+	tip_rigidbody.global_transform.basis = hand_right.global_transform.basis
-	if bodies_entered.has(body):
-		if !bodies_entered[body].has(finger_type):
-			bodies_entered[body].append(finger_type)
-	else:
-		bodies_entered[body] = [finger_type]
-
-func _on_body_exited(finger_type, body):
-	if bodies_entered.has(body):
-		if bodies_entered[body].has(finger_type):
-			bodies_entered[body].erase(finger_type)
-
-		if bodies_entered[body].size() == 0:
-			bodies_entered.erase(body)

docs/development/index.md

@@ -70,3 +70,11 @@ root
 Static code reference can be found in the Reference section of the documentation at the top right. It is exported from Godot and contains all available scripts from the `/lib` folder.
 
 The documentation is written in Markdown and can be found in the `docs` folder of the repository.
+
+### Physics layers
+
+1. **Entitites**: Used for interaction with entities in the room.
+2. **Interface**: Used for interaction with the UI.
+3. **Touch**: Used for touch based interactions.
+4. **Physics**: Used for physics interactions.
+5. **Room**: Used for interaction with the room.