Added listener node

assets/text/text.csv

@@ -21,13 +21,14 @@ PAUSE_QUIT_MSG,"Quit to desktop?\nUnsaved progress will be lost."
 SETTINGS_GAME,Game
 SETTINGS_GAME_HEADING,"Game Configuration"
 SETTINGS_GAME_ACCESSIBILITY_HEADING,Accessibility
-SETTINGS_GAME_CAMERA_HEADING,Camera
+SETTINGS_GAME_INPUT_HEADING,Input
 SETTINGS_SCREEN_SHAKE,"Enable Screen Shake"
 SETTINGS_HEAD_BOB,"Enable Head Bob"
 SETTINGS_SENSITIVITY_X,"Sensitivity, Horizontal"
 SETTINGS_SENSITIVITY_Y,"Sensitivity, Vertical"
 SETTINGS_MOUSE_ACCELERATION,"Mouse Acceleration"
 SETTINGS_INVERT_PITCH,"Invert Pitch"
+SETTINGS_HOLD_TO_SNEAK,"Hold to Sneak"
 SETTINGS_GRAPHICS,Graphics
 SETTINGS_GRAPHICS_HEADING,"Graphics & Display"
 SETTINGS_GRAPHICS_DISPLAY_HEADING,Display

levels/mechanic_test/mechanic_test.tscn

@@ -141,7 +141,7 @@ transform = Transform3D(0.866025, -0.156955, -0.474726, 0.5, 0.271854, 0.82225,
 [node name="WorldEnvironment" type="WorldEnvironment" parent="."]
 environment = SubResource("Environment_bg05n")
 
-[node name="WorldFloor" type="StaticBody3D" parent="."]
+[node name="WorldFloor" type="StaticBody3D" parent="." groups=["PlasticMaterial"]]
 
 [node name="MeshInstance3D" type="MeshInstance3D" parent="WorldFloor"]
 mesh = SubResource("PlaneMesh_mn2wa")

levels/mechanic_test/signal_test.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=24 format=3 uid="uid://b5jubpjj3d277"]
+[gd_scene load_steps=28 format=3 uid="uid://b5jubpjj3d277"]
 
 [ext_resource type="PackedScene" uid="uid://c2omlx4ptrc01" path="res://src/world/gunk_body/gunk_body.tscn" id="1_3u410"]
 [ext_resource type="Shader" uid="uid://ckxc0ngd37rtk" path="res://src/shaders/gunk.gdshader" id="2_tfbib"]
@@ -11,6 +11,7 @@
 [ext_resource type="PackedScene" uid="uid://bttust5ohud8e" path="res://src/world/mechanics/relay/gunk_relay.tscn" id="9_d4a3d"]
 [ext_resource type="PackedScene" uid="uid://dgeg3kkogm71m" path="res://src/world/mechanics/alarm/gunk_alarm.tscn" id="10_l8xa5"]
 [ext_resource type="PackedScene" uid="uid://d0j20q65wnqsr" path="res://src/world/mechanics/heart/gunk_heart.tscn" id="11_tfbib"]
+[ext_resource type="PackedScene" uid="uid://kctp5erogwcb" path="res://src/world/mechanics/listener/listener.tscn" id="12_e8utx"]
 
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_cgmn0"]
 resource_local_to_scene = true
@@ -164,6 +165,60 @@ shader_parameter/jitter_time_scale = 0.1
 shader_parameter/vertex_inflation = 0.0
 shader_parameter/inflation_pixellation = 10.0
 
+[sub_resource type="ArrayMesh" id="ArrayMesh_r07l4"]
+_surfaces = [{
+"aabb": AABB(-1.5, 0, -1.5, 3, 1e-05, 3),
+"format": 34896613377,
+"index_count": 6,
+"index_data": PackedByteArray(0, 0, 1, 0, 2, 0, 2, 0, 1, 0, 3, 0),
+"name": "Plane",
+"primitive": 3,
+"uv_scale": Vector4(0, 0, 0, 0),
+"vertex_count": 4,
+"vertex_data": PackedByteArray(255, 255, 0, 0, 255, 255, 0, 0, 0, 0, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
+}]
+blend_shape_mode = 0
+
+[sub_resource type="ArrayMesh" id="ArrayMesh_67o2j"]
+_surfaces = [{
+"aabb": AABB(-1.5, 0, -1.5, 3, 1e-05, 3),
+"attribute_data": PackedByteArray(255, 255, 255, 255, 0, 0, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0),
+"format": 34896613399,
+"index_count": 6,
+"index_data": PackedByteArray(0, 0, 1, 0, 2, 0, 2, 0, 1, 0, 3, 0),
+"material": SubResource("StandardMaterial3D_3u410"),
+"name": "Plane",
+"primitive": 3,
+"uv_scale": Vector4(0, 0, 0, 0),
+"vertex_count": 4,
+"vertex_data": PackedByteArray(255, 255, 0, 0, 255, 255, 255, 191, 0, 0, 0, 0, 255, 255, 255, 191, 255, 255, 0, 0, 0, 0, 255, 191, 0, 0, 0, 0, 0, 0, 255, 191, 255, 255, 255, 127, 255, 255, 255, 127, 255, 255, 255, 127, 255, 255, 255, 127)
+}]
+blend_shape_mode = 0
+shadow_mesh = SubResource("ArrayMesh_r07l4")
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_e8utx"]
+resource_local_to_scene = true
+render_priority = 0
+shader = ExtResource("2_tfbib")
+shader_parameter/color_1 = Color(0, 0.03, 0.1, 1)
+shader_parameter/color_2 = Color(0, 0.1, 0.3, 1)
+shader_parameter/emission_color = Color(0.25, 0.88, 1, 1)
+shader_parameter/pixellation = 128.0
+shader_parameter/time_pixellation = 30.0
+shader_parameter/roughness = 0.15
+shader_parameter/specular_contribution = 0.8
+shader_parameter/emission_strength = 0.02
+shader_parameter/uv_scale = Vector2(4, 4)
+shader_parameter/time_scale = 0.2
+shader_parameter/edge_bleed = 0.25
+shader_parameter/gunk_mask = SubResource("CompressedTexture2D_f342o")
+shader_parameter/gunk_noise = SubResource("NoiseTexture3D_iyuyb")
+shader_parameter/gunk_normal_map = SubResource("NoiseTexture3D_qjnj2")
+shader_parameter/jitter_magnitude = 0.0
+shader_parameter/jitter_time_scale = 0.1
+shader_parameter/vertex_inflation = 0.0
+shader_parameter/inflation_pixellation = 10.0
+
 [node name="SignalTest" type="Node3D"]
 
 [node name="TriggerNetWall" type="MeshInstance3D" parent="."]
@@ -239,6 +294,52 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.3, -1.96701e-08, -0.45)
 [node name="GunkAlarm" parent="PulseNetWall/Puzzle" instance=ExtResource("10_l8xa5")]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -4.37114e-08, -1)
 
+[node name="ListenerWall" type="MeshInstance3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, -4.37114e-08, -1, 0, 1, -4.37114e-08, 7, 1.5, 0)
+mesh = SubResource("ArrayMesh_67o2j")
+
+[node name="GunkBody" parent="ListenerWall" instance=ExtResource("1_3u410")]
+mask_dim = 64
+source_gunk_material = SubResource("ShaderMaterial_e8utx")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="ListenerWall/GunkBody"]
+shape = SubResource("ConcavePolygonShape3D_x2vho")
+
+[node name="Puzzle" type="Node3D" parent="ListenerWall"]
+
+[node name="Listener" parent="ListenerWall/Puzzle" instance=ExtResource("12_e8utx")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 4.37114e-08, 1)
+
+[node name="GunkRelay" parent="ListenerWall/Puzzle" instance=ExtResource("9_d4a3d")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.35, 2.18557e-08, 0.5)
+
+[node name="GunkRelay2" parent="ListenerWall/Puzzle" instance=ExtResource("9_d4a3d")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.7, 4.37115e-09, 0.1)
+
+[node name="GunkRelay3" parent="ListenerWall/Puzzle" instance=ExtResource("9_d4a3d")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.9, -1.96701e-08, -0.45)
+
+[node name="GunkRelay4" parent="ListenerWall/Puzzle" instance=ExtResource("9_d4a3d")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.65, -4.15258e-08, -0.95)
+
+[node name="GunkRelay5" parent="ListenerWall/Puzzle" instance=ExtResource("9_d4a3d")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.0999994, -5.02681e-08, -1.15)
+
+[node name="GunkRelay6" parent="ListenerWall/Puzzle" instance=ExtResource("9_d4a3d")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.400001, -3.71547e-08, -0.85)
+
+[node name="GunkRelay7" parent="ListenerWall/Puzzle" instance=ExtResource("9_d4a3d")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.5, -1.5299e-08, -0.35)
+
+[node name="GunkRelay8" parent="ListenerWall/Puzzle" instance=ExtResource("9_d4a3d")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.2, -2.18557e-09, -0.0500002)
+
+[node name="GunkRelay9" parent="ListenerWall/Puzzle" instance=ExtResource("9_d4a3d")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.15, -6.55671e-09, -0.15)
+
+[node name="GunkRelay10" parent="ListenerWall/Puzzle" instance=ExtResource("9_d4a3d")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.15, -2.18557e-08, -0.5)
+
 [connection signal="destroyed" from="TriggerNetWall/Puzzle/GunkTrigger" to="TriggerNetWall/Puzzle/GunkRelay" method="trigger"]
 [connection signal="triggered" from="TriggerNetWall/Puzzle/GunkRelay" to="TriggerNetWall/Puzzle/GunkRelay2" method="trigger"]
 [connection signal="triggered" from="TriggerNetWall/Puzzle/GunkRelay5" to="TriggerNetWall/Puzzle/GunkRelay2" method="trigger"]
@@ -255,3 +356,22 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -4.37114e-08, -1)
 [connection signal="pulsed" from="PulseNetWall/Puzzle/GunkRelay4" to="PulseNetWall/Puzzle/GunkRelay6" method="pulse"]
 [connection signal="pulsed" from="PulseNetWall/Puzzle/GunkRelay5" to="PulseNetWall/Puzzle/GunkAlarm" method="pulse"]
 [connection signal="pulsed" from="PulseNetWall/Puzzle/GunkRelay6" to="PulseNetWall/Puzzle/GunkAlarm" method="pulse"]
+[connection signal="triggered" from="ListenerWall/Puzzle/Listener" to="ListenerWall/Puzzle/GunkRelay" method="trigger"]
+[connection signal="pulsed" from="ListenerWall/Puzzle/GunkRelay" to="ListenerWall/Puzzle/GunkRelay2" method="trigger"]
+[connection signal="triggered" from="ListenerWall/Puzzle/GunkRelay" to="ListenerWall/Puzzle/GunkRelay2" method="trigger"]
+[connection signal="pulsed" from="ListenerWall/Puzzle/GunkRelay2" to="ListenerWall/Puzzle/GunkRelay3" method="trigger"]
+[connection signal="triggered" from="ListenerWall/Puzzle/GunkRelay2" to="ListenerWall/Puzzle/GunkRelay3" method="trigger"]
+[connection signal="pulsed" from="ListenerWall/Puzzle/GunkRelay3" to="ListenerWall/Puzzle/GunkRelay4" method="trigger"]
+[connection signal="triggered" from="ListenerWall/Puzzle/GunkRelay3" to="ListenerWall/Puzzle/GunkRelay4" method="trigger"]
+[connection signal="pulsed" from="ListenerWall/Puzzle/GunkRelay4" to="ListenerWall/Puzzle/GunkRelay5" method="trigger"]
+[connection signal="triggered" from="ListenerWall/Puzzle/GunkRelay4" to="ListenerWall/Puzzle/GunkRelay5" method="trigger"]
+[connection signal="pulsed" from="ListenerWall/Puzzle/GunkRelay5" to="ListenerWall/Puzzle/GunkRelay6" method="trigger"]
+[connection signal="triggered" from="ListenerWall/Puzzle/GunkRelay5" to="ListenerWall/Puzzle/GunkRelay6" method="trigger"]
+[connection signal="pulsed" from="ListenerWall/Puzzle/GunkRelay6" to="ListenerWall/Puzzle/GunkRelay7" method="trigger"]
+[connection signal="triggered" from="ListenerWall/Puzzle/GunkRelay6" to="ListenerWall/Puzzle/GunkRelay7" method="trigger"]
+[connection signal="pulsed" from="ListenerWall/Puzzle/GunkRelay7" to="ListenerWall/Puzzle/GunkRelay8" method="trigger"]
+[connection signal="triggered" from="ListenerWall/Puzzle/GunkRelay7" to="ListenerWall/Puzzle/GunkRelay8" method="trigger"]
+[connection signal="pulsed" from="ListenerWall/Puzzle/GunkRelay8" to="ListenerWall/Puzzle/GunkRelay9" method="trigger"]
+[connection signal="triggered" from="ListenerWall/Puzzle/GunkRelay8" to="ListenerWall/Puzzle/GunkRelay9" method="trigger"]
+[connection signal="pulsed" from="ListenerWall/Puzzle/GunkRelay9" to="ListenerWall/Puzzle/GunkRelay10" method="trigger"]
+[connection signal="triggered" from="ListenerWall/Puzzle/GunkRelay9" to="ListenerWall/Puzzle/GunkRelay10" method="trigger"]

project.godot

@@ -71,6 +71,7 @@ config/input/mouse_acceleration=30.0
 audio/buses/override_bus_layout="user://audio_bus_layout.tres"
 config/accessibility/enable_screen_shake=true
 config/accessibility/enable_head_bob=true
+config/input/hold_to_sneak=true
 
 [global_group]
 
@@ -182,6 +183,7 @@ locale/translations=PackedStringArray("res://assets/text/text.en.translation")
 3d_physics/layer_2="Interactive"
 3d_physics/layer_3="Sprayable"
 3d_physics/layer_4="Player"
+3d_physics/layer_5="GameSounds"
 
 [rendering]
 

src/effects/grunk_splatter.tscn

@@ -1,9 +1,10 @@
-[gd_scene load_steps=20 format=3 uid="uid://xlt78xc1tmkl"]
+[gd_scene load_steps=22 format=3 uid="uid://xlt78xc1tmkl"]
 
 [ext_resource type="Texture2D" uid="uid://cgwgmxwjgwbwr" path="res://assets/particles/splatter_2.png" id="1_5xu2x"]
 [ext_resource type="Texture2D" uid="uid://bhoai6xv53tqm" path="res://assets/particles/splatter_1.png" id="2_bt63p"]
 [ext_resource type="AudioStream" uid="uid://di0j2xhgfc78s" path="res://assets/sfx/grunk/splat1.wav" id="3_t00bd"]
 [ext_resource type="AudioStream" uid="uid://d1w5gfmjj7tjk" path="res://assets/sfx/grunk/splat2.wav" id="4_2iem1"]
+[ext_resource type="Script" uid="uid://c5o1d2shq2qig" path="res://src/world/game_sound/game_sound_emitter.gd" id="5_2iem1"]
 
 [sub_resource type="Gradient" id="Gradient_5xu2x"]
 offsets = PackedFloat32Array(0, 0.291304, 0.526087, 1)
@@ -99,6 +100,9 @@ streams_count = 2
 stream_0/stream = ExtResource("3_t00bd")
 stream_1/stream = ExtResource("4_2iem1")
 
+[sub_resource type="SphereShape3D" id="SphereShape3D_6adkd"]
+radius = 2.0
+
 [node name="GrunkSplatter" type="GPUParticles3D"]
 sorting_offset = 9.0
 emitting = false
@@ -133,7 +137,17 @@ unit_size = 6.0
 autoplay = true
 bus = &"SFX"
 
+[node name="SplatterSoundEmitter" type="Area3D" parent="."]
+collision_layer = 0
+collision_mask = 16
+script = ExtResource("5_2iem1")
+metadata/_custom_type_script = "uid://c5o1d2shq2qig"
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="SplatterSoundEmitter"]
+shape = SubResource("SphereShape3D_6adkd")
+
 [connection signal="ready" from="." to="SplatterSFX" method="play"]
+[connection signal="ready" from="." to="SplatterSoundEmitter" method="emit_sound_here"]
 [connection signal="ready" from="." to="." method="set_emitting" binds= [true]]
 [connection signal="ready" from="." to="SubSplatter" method="set_emitting" binds= [true]]
 [connection signal="timeout" from="FreeTimer" to="." method="queue_free"]

src/equipment/beam_sfx/spray_sfx.gd

@@ -6,6 +6,8 @@ class_name SpraySFX extends AudioStreamPlayer3D
 
 var _active_this_frame := false
 
+@onready var spray_game_sound_emitter: GameSoundEmitter = %SprayGameSoundEmitter
+
 
 func activate() -> void:
 	_active_this_frame = true
@@ -23,6 +25,7 @@ func _process(_delta: float) -> void:
 	if _active_this_frame:
 		if not playing:
 			play()
+		spray_game_sound_emitter.emit_sound_here()
 	else:
 		stop()
 

src/equipment/beam_sfx/spray_sfx.tscn

@@ -1,11 +1,26 @@
-[gd_scene load_steps=3 format=3 uid="uid://btq11kil0jcql"]
+[gd_scene load_steps=5 format=3 uid="uid://btq11kil0jcql"]
 
 [ext_resource type="AudioStream" uid="uid://b5ik76jgl8mex" path="res://assets/sfx/tools/spray.wav" id="1_575yt"]
 [ext_resource type="Script" uid="uid://bhvkgqpm7sglw" path="res://src/equipment/beam_sfx/spray_sfx.gd" id="2_yajv7"]
+[ext_resource type="Script" uid="uid://c5o1d2shq2qig" path="res://src/world/game_sound/game_sound_emitter.gd" id="3_rikqc"]
+
+[sub_resource type="SphereShape3D" id="SphereShape3D_yaakk"]
+radius = 2.0
 
 [node name="SpraySFX" type="AudioStreamPlayer3D"]
 stream = ExtResource("1_575yt")
 attenuation_model = 1
+volume_db = -12.0
 unit_size = 2.0
 bus = &"SFX"
 script = ExtResource("2_yajv7")
+
+[node name="SprayGameSoundEmitter" type="Area3D" parent="."]
+unique_name_in_owner = true
+collision_layer = 0
+collision_mask = 16
+script = ExtResource("3_rikqc")
+metadata/_custom_type_script = "uid://c5o1d2shq2qig"
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="SprayGameSoundEmitter"]
+shape = SubResource("SphereShape3D_yaakk")

src/game/game_settings.gd

@@ -10,6 +10,7 @@ var mouse_sensitivity_x: float
 var mouse_sensitivity_y: float
 var mouse_acceleration: float
 var invert_pitch: bool
+var hold_to_sneak: bool
 
 var enable_screen_shake: bool
 var enable_head_bob: bool
@@ -31,6 +32,7 @@ func _read_settings() -> void:
 	mouse_sensitivity_y = ProjectSettings.get_setting("game/config/input/mouse_sensitivity_y")
 	mouse_acceleration = ProjectSettings.get_setting("game/config/input/mouse_acceleration")
 	invert_pitch = ProjectSettings.get_setting("game/config/input/invert_pitch")
+	hold_to_sneak = ProjectSettings.get_setting("game/config/input/hold_to_sneak")
 
 	enable_screen_shake = ProjectSettings.get_setting(
 		"game/config/accessibility/enable_screen_shake"

src/player/footsteps/footstep_controller.gd

@@ -12,9 +12,13 @@ var _on_right_foot := false
 @onready var right_foot: FootController = %RightFoot
 
 @onready var foot_cast: RayCast3D = %FootCast
+@onready var footstep_game_sound_emitter: GameSoundEmitter = %FootstepGameSoundEmitter
 
 
 func play_footstep() -> void:
+	if player.sneaking:
+		return
+
 	var foot := right_foot if _on_right_foot else left_foot
 
 	var relative_speed := player.velocity.length() - MUTE_VELOCITY
@@ -25,6 +29,7 @@ func play_footstep() -> void:
 	if sfx:
 		sfx.volume_db = BASE_VOLUME + relative_speed * VELOCITY_FACTOR
 		sfx.play()
+		footstep_game_sound_emitter.emit_sound_here()
 
 	_on_right_foot = not _on_right_foot
 

src/player/player.gd

@@ -1,17 +1,29 @@
 class_name Player extends CharacterBody3D
 
-const FOCUS_SPEED := 30.0
+#region Exported Properties
-const RUN_SPEED := 80.0
-const SPRINT_SPEED := 160.0
-const AIR_SPEED := 10.0
 
-const JUMP_FORCE := 4.5
+@export_category("Movement")
+@export_group("Speed")
+@export var run_speed := 80.0
+@export var sprint_speed := 160.0
+@export var sneak_speed := 40.0
+@export var focus_speed := 25.0
+@export var air_speed_factor := 0.1
 
-const GROUND_FRICTION := 0.3
+@export_group("Jump")
-const AIR_FRICTION := 0.03
+@export var jump_force := 4.0
 
+@export_group("Friction")
+@export var ground_friction := 0.3
+@export var air_friction := 0.03
+
+@export_category("Inventory")
 @export var inventory: Dictionary[Item, int] = {}
 
+#endregion
+
+#region Member Variables
+
 var gravity: Vector3 = (
 	ProjectSettings.get_setting("physics/3d/default_gravity")
 	* ProjectSettings.get_setting("physics/3d/default_gravity_vector")
@@ -19,6 +31,9 @@ var gravity: Vector3 = (
 
 var selected_interactive: Interactive
 var firing := false
+var sneaking := false
+
+var _was_on_floor := false
 
 @onready var hud: PlayerHUD = %PlayerHUD
 
@@ -31,28 +46,45 @@ var firing := false
 @onready var wide_spray: WideSpray = %WideSpray
 @onready var toothbrush: Tool = %Toothbrush
 
+@onready var crouch_head_area: Area3D = %CrouchHeadArea
+@onready var crouch_animation: AnimationPlayer = %CrouchAnimation
+
+@onready var jump_game_sound_emitter: GameSoundEmitter = %JumpGameSoundEmitter
+
+#endregion
+
 ## Global static access to player singleton
 static var instance: Player
 
+#region _ready
+
 
 func _ready() -> void:
 	instance = self
 
 
+#endregion
+
+#region Public Methods
+
+
 func get_speed() -> float:
-	if is_on_floor():
+	var speed := run_speed
-		if firing:
-			return FOCUS_SPEED
 	if Input.is_action_pressed("sprint"):
-			return SPRINT_SPEED
+		speed = sprint_speed
-		return RUN_SPEED
+	if sneaking:
-	return AIR_SPEED
+		speed = sneak_speed
+	if firing:
+		speed = focus_speed
+	if not is_on_floor():
+		speed *= air_speed_factor
+	return speed
 
 
 func get_friction() -> float:
 	if is_on_floor():
-		return GROUND_FRICTION
+		return ground_friction
-	return AIR_FRICTION
+	return air_friction
 
 
 func get_tool() -> Tool:
@@ -71,6 +103,34 @@ func remove_item(item: Item, amount: int = 1) -> void:
 		inventory.erase(item)
 
 
+func crouch() -> void:
+	if not sneaking and not crouch_animation.is_playing():
+		crouch_animation.play("crouch")
+		sneaking = true
+
+
+func uncrouch() -> void:
+	if (
+		sneaking
+		and not crouch_animation.is_playing()
+		and not crouch_head_area.has_overlapping_bodies()
+	):
+		crouch_animation.play_backwards("crouch")
+		sneaking = false
+
+
+func toggle_crouch() -> void:
+	if sneaking:
+		uncrouch()
+	else:
+		crouch()
+
+
+#endregion
+
+#region _physics_process
+
+
 func _physics_process(delta: float) -> void:
 	# Will be null if no valid interactor is selected.
 	var interactive: Interactive = interact_ray.get_collider() as Interactive
@@ -105,8 +165,22 @@ func _physics_process(delta: float) -> void:
 	if Input.is_action_just_pressed("switch_mode"):
 		get_tool().switch_mode()
 
+	# Two sneaking modes -- hold and toggle
+	if Game.settings.hold_to_sneak:
+		if Input.is_action_pressed("sneak"):
+			crouch()
+		else:
+			uncrouch()
+	else:
+		if Input.is_action_just_pressed("sneak"):
+			toggle_crouch()
+
+	if is_on_floor():
+		if not _was_on_floor and not sneaking:
+			# just landed
+			jump_game_sound_emitter.emit_sound_here()
+	else:
 		# Gravity
-	if not is_on_floor():
 		velocity += gravity * delta
 
 	# Input movement
@@ -117,11 +191,15 @@ func _physics_process(delta: float) -> void:
 	velocity.x += movement.x
 	velocity.z += movement.z
 	if Input.is_action_just_pressed("jump") and is_on_floor():
-		velocity.y = JUMP_FORCE
+		velocity.y = jump_force
 
 	# Friction
 	var friction := get_friction()
 	velocity.x = lerpf(velocity.x, 0, friction)
 	velocity.z = lerpf(velocity.z, 0, friction)
 
+	_was_on_floor = is_on_floor()
+
 	move_and_slide()
+
+#endregion

src/player/player.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=49 format=3 uid="uid://bwe2jdmvinhqd"]
+[gd_scene load_steps=57 format=3 uid="uid://bwe2jdmvinhqd"]
 
 [ext_resource type="Script" uid="uid://buwh0g1ga2aka" path="res://src/player/player.gd" id="1_npueo"]
 [ext_resource type="Script" uid="uid://cx1yt0drthpw3" path="res://src/player/camera_controller.gd" id="2_veeqv"]
@@ -30,6 +30,7 @@
 [ext_resource type="AudioStream" uid="uid://div20rlq8ync5" path="res://assets/sfx/footsteps/plastic/plastic1.wav" id="28_dpt0q"]
 [ext_resource type="AudioStream" uid="uid://djucfo3l7x7px" path="res://assets/sfx/footsteps/plastic/plastic3.wav" id="29_wcxbk"]
 [ext_resource type="AudioStream" uid="uid://ck86vhmbg3xnj" path="res://assets/sfx/footsteps/plastic/plastic5.wav" id="30_p6grl"]
+[ext_resource type="Script" uid="uid://c5o1d2shq2qig" path="res://src/world/game_sound/game_sound_emitter.gd" id="31_wcxbk"]
 
 [sub_resource type="Animation" id="Animation_x42xx"]
 length = 0.001
@@ -151,7 +152,6 @@ animation = &"RESET"
 [sub_resource type="AnimationNodeTimeScale" id="AnimationNodeTimeScale_8ydov"]
 
 [sub_resource type="AnimationNodeBlendTree" id="AnimationNodeBlendTree_ylhto"]
-graph_offset = Vector2(-33.7273, -38.6364)
 nodes/blend/node = SubResource("AnimationNodeBlend2_o822w")
 nodes/blend/position = Vector2(779, 166)
 nodes/bob_anim/node = SubResource("AnimationNodeAnimation_x42xx")
@@ -171,6 +171,10 @@ node_connections = [&"blend", 0, &"still_anim", &"blend", 1, &"bob_anim", &"outp
 radius = 0.4
 height = 1.9
 
+[sub_resource type="CapsuleShape3D" id="CapsuleShape3D_dpt0q"]
+radius = 0.4
+height = 1.2
+
 [sub_resource type="AudioStreamRandomizer" id="AudioStreamRandomizer_8ydov"]
 random_pitch = 1.1
 streams_count = 6
@@ -222,43 +226,247 @@ stream_0/stream = ExtResource("28_dpt0q")
 stream_1/stream = ExtResource("29_wcxbk")
 stream_2/stream = ExtResource("30_p6grl")
 
+[sub_resource type="SphereShape3D" id="SphereShape3D_wcxbk"]
+radius = 4.0
+
+[sub_resource type="CapsuleShape3D" id="CapsuleShape3D_wcxbk"]
+radius = 0.4
+height = 1.8
+
+[sub_resource type="Animation" id="Animation_dpt0q"]
+resource_name = "crouch"
+length = 0.2
+step = 0.01
+tracks/0/type = "bezier"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("CameraPosition:position:x")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"handle_modes": PackedInt32Array(0, 0),
+"points": PackedFloat32Array(0, -0.1, 0, 0.1, 0, 0, -0.1, 0, 0.1, 0),
+"times": PackedFloat32Array(0, 0.2)
+}
+tracks/1/type = "bezier"
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/path = NodePath("CameraPosition:position:y")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/keys = {
+"handle_modes": PackedInt32Array(0, 0),
+"points": PackedFloat32Array(0.5, -0.1, 0, 0.1, 0, -0.2, -0.2, 0, 0.1, 0),
+"times": PackedFloat32Array(0, 0.2)
+}
+tracks/2/type = "bezier"
+tracks/2/imported = false
+tracks/2/enabled = true
+tracks/2/path = NodePath("CameraPosition:position:z")
+tracks/2/interp = 1
+tracks/2/loop_wrap = true
+tracks/2/keys = {
+"handle_modes": PackedInt32Array(0, 0),
+"points": PackedFloat32Array(0, -0.1, 0, 0.1, 0, 0, -0.1, 0, 0.1, 0),
+"times": PackedFloat32Array(0, 0.2)
+}
+tracks/3/type = "bezier"
+tracks/3/imported = false
+tracks/3/enabled = true
+tracks/3/path = NodePath("CameraPosition:rotation:x")
+tracks/3/interp = 1
+tracks/3/loop_wrap = true
+tracks/3/keys = {
+"handle_modes": PackedInt32Array(0, 0, 0),
+"points": PackedFloat32Array(0, -0.1, 0, 0.1, 0, 0, -0.1, 0, 0.1, 0, 0, -0.1, 0, 0.1, 0),
+"times": PackedFloat32Array(0, 0.1, 0.2)
+}
+tracks/4/type = "bezier"
+tracks/4/imported = false
+tracks/4/enabled = true
+tracks/4/path = NodePath("CameraPosition:rotation:y")
+tracks/4/interp = 1
+tracks/4/loop_wrap = true
+tracks/4/keys = {
+"handle_modes": PackedInt32Array(0, 0, 0),
+"points": PackedFloat32Array(0, -0.1, 0, 0.1, 0, 0, -0.1, 0, 0.1, 0, 0, -0.1, 0, 0.1, 0),
+"times": PackedFloat32Array(0, 0.1, 0.2)
+}
+tracks/5/type = "bezier"
+tracks/5/imported = false
+tracks/5/enabled = true
+tracks/5/path = NodePath("CameraPosition:rotation:z")
+tracks/5/interp = 1
+tracks/5/loop_wrap = true
+tracks/5/keys = {
+"handle_modes": PackedInt32Array(0, 0, 0),
+"points": PackedFloat32Array(0, -0.1, 0, 0.01, 0, -0.02, -0.01, 0, 0.01, 0, 0, -0.01, 0, 0.1, 0),
+"times": PackedFloat32Array(0, 0.1, 0.2)
+}
+tracks/6/type = "value"
+tracks/6/imported = false
+tracks/6/enabled = true
+tracks/6/path = NodePath("StandingCollider:disabled")
+tracks/6/interp = 1
+tracks/6/loop_wrap = true
+tracks/6/keys = {
+"times": PackedFloat32Array(0, 0.01),
+"transitions": PackedFloat32Array(1, 1),
+"update": 1,
+"values": [false, true]
+}
+tracks/7/type = "value"
+tracks/7/imported = false
+tracks/7/enabled = true
+tracks/7/path = NodePath("CrouchingCollider:disabled")
+tracks/7/interp = 1
+tracks/7/loop_wrap = true
+tracks/7/keys = {
+"times": PackedFloat32Array(0, 0.01),
+"transitions": PackedFloat32Array(1, 1),
+"update": 1,
+"values": [true, false]
+}
+
+[sub_resource type="Animation" id="Animation_wcxbk"]
+length = 0.001
+tracks/0/type = "bezier"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("CameraPosition:position:x")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"handle_modes": PackedInt32Array(0),
+"points": PackedFloat32Array(0, -0.1, 0, 0.1, 0),
+"times": PackedFloat32Array(0)
+}
+tracks/1/type = "bezier"
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/path = NodePath("CameraPosition:position:y")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/keys = {
+"handle_modes": PackedInt32Array(0),
+"points": PackedFloat32Array(0.5, -0.1, 0, 0.1, 0),
+"times": PackedFloat32Array(0)
+}
+tracks/2/type = "bezier"
+tracks/2/imported = false
+tracks/2/enabled = true
+tracks/2/path = NodePath("CameraPosition:position:z")
+tracks/2/interp = 1
+tracks/2/loop_wrap = true
+tracks/2/keys = {
+"handle_modes": PackedInt32Array(0),
+"points": PackedFloat32Array(0, -0.1, 0, 0.1, 0),
+"times": PackedFloat32Array(0)
+}
+tracks/3/type = "bezier"
+tracks/3/imported = false
+tracks/3/enabled = true
+tracks/3/path = NodePath("CameraPosition:rotation:x")
+tracks/3/interp = 1
+tracks/3/loop_wrap = true
+tracks/3/keys = {
+"handle_modes": PackedInt32Array(0),
+"points": PackedFloat32Array(0, -0.1, 0, 0.1, 0),
+"times": PackedFloat32Array(0)
+}
+tracks/4/type = "bezier"
+tracks/4/imported = false
+tracks/4/enabled = true
+tracks/4/path = NodePath("CameraPosition:rotation:y")
+tracks/4/interp = 1
+tracks/4/loop_wrap = true
+tracks/4/keys = {
+"handle_modes": PackedInt32Array(0),
+"points": PackedFloat32Array(0, -0.1, 0, 0.1, 0),
+"times": PackedFloat32Array(0)
+}
+tracks/5/type = "bezier"
+tracks/5/imported = false
+tracks/5/enabled = true
+tracks/5/path = NodePath("CameraPosition:rotation:z")
+tracks/5/interp = 1
+tracks/5/loop_wrap = true
+tracks/5/keys = {
+"handle_modes": PackedInt32Array(0),
+"points": PackedFloat32Array(0, -0.1, 0, 0.1, 0),
+"times": PackedFloat32Array(0)
+}
+tracks/6/type = "value"
+tracks/6/imported = false
+tracks/6/enabled = true
+tracks/6/path = NodePath("StandingCollider:disabled")
+tracks/6/interp = 1
+tracks/6/loop_wrap = true
+tracks/6/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [false]
+}
+tracks/7/type = "value"
+tracks/7/imported = false
+tracks/7/enabled = true
+tracks/7/path = NodePath("CrouchingCollider:disabled")
+tracks/7/interp = 1
+tracks/7/loop_wrap = true
+tracks/7/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [true]
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_wcxbk"]
+_data = {
+&"RESET": SubResource("Animation_wcxbk"),
+&"crouch": SubResource("Animation_dpt0q")
+}
+
+[sub_resource type="SphereShape3D" id="SphereShape3D_p6grl"]
+radius = 3.0
+
 [node name="Player" type="CharacterBody3D"]
-collision_layer = 9
+collision_layer = 8
 script = ExtResource("1_npueo")
 
-[node name="CameraPivot" type="Node3D" parent="."]
+[node name="CameraPosition" type="Node3D" parent="."]
-unique_name_in_owner = true
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.5, 0)
+
+[node name="CameraPivot" type="Node3D" parent="CameraPosition"]
+unique_name_in_owner = true
 script = ExtResource("2_veeqv")
 
-[node name="ToolMount" type="Node3D" parent="CameraPivot" node_paths=PackedStringArray("initial_tool")]
+[node name="ToolMount" type="Node3D" parent="CameraPosition/CameraPivot" node_paths=PackedStringArray("initial_tool")]
 unique_name_in_owner = true
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.15, -0.1, -0.1)
 script = ExtResource("3_jiejy")
 initial_tool = NodePath("PointSpray")
 
-[node name="PointSpray" parent="CameraPivot/ToolMount" instance=ExtResource("3_6wgkm")]
+[node name="PointSpray" parent="CameraPosition/CameraPivot/ToolMount" instance=ExtResource("3_6wgkm")]
 unique_name_in_owner = true
 
-[node name="WideSpray" parent="CameraPivot/ToolMount" instance=ExtResource("3_ibq07")]
+[node name="WideSpray" parent="CameraPosition/CameraPivot/ToolMount" instance=ExtResource("3_ibq07")]
 unique_name_in_owner = true
 visible = false
 
-[node name="Toothbrush" parent="CameraPivot/ToolMount" instance=ExtResource("6_o822w")]
+[node name="Toothbrush" parent="CameraPosition/CameraPivot/ToolMount" instance=ExtResource("6_o822w")]
 unique_name_in_owner = true
 visible = false
 
-[node name="CameraPosition" type="Node3D" parent="CameraPivot"]
+[node name="Camera3D" type="Camera3D" parent="CameraPosition/CameraPivot"]
-
-[node name="Camera3D" type="Camera3D" parent="CameraPivot/CameraPosition"]
 current = true
 
-[node name="InteractRay" type="RayCast3D" parent="CameraPivot/CameraPosition/Camera3D"]
+[node name="InteractRay" type="RayCast3D" parent="CameraPosition/CameraPivot/Camera3D"]
 unique_name_in_owner = true
 target_position = Vector3(0, 0, -1.5)
 collision_mask = 2
 
-[node name="FarLight" type="OmniLight3D" parent="CameraPivot/CameraPosition/Camera3D"]
+[node name="FarLight" type="OmniLight3D" parent="CameraPosition/CameraPivot/Camera3D"]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.1)
 light_energy = 0.05
 light_specular = 0.01
@@ -266,18 +474,18 @@ light_cull_mask = 4294967293
 omni_range = 50.0
 omni_attenuation = 0.0
 
-[node name="NearLight" type="OmniLight3D" parent="CameraPivot/CameraPosition/Camera3D"]
+[node name="NearLight" type="OmniLight3D" parent="CameraPosition/CameraPivot/Camera3D"]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.1)
 light_specular = 0.01
 light_cull_mask = 4294967293
 omni_range = 2.0
 
-[node name="HeadbobAnimation" type="AnimationPlayer" parent="CameraPivot/CameraPosition/Camera3D"]
+[node name="HeadbobAnimation" type="AnimationPlayer" parent="CameraPosition/CameraPivot/Camera3D"]
 libraries = {
 &"": SubResource("AnimationLibrary_l271a")
 }
 
-[node name="HeadbobController" type="AnimationTree" parent="CameraPivot/CameraPosition/Camera3D/HeadbobAnimation"]
+[node name="HeadbobController" type="AnimationTree" parent="CameraPosition/CameraPivot/Camera3D/HeadbobAnimation"]
 unique_name_in_owner = true
 root_node = NodePath("%HeadbobController/../..")
 tree_root = SubResource("AnimationNodeBlendTree_ylhto")
@@ -287,10 +495,15 @@ parameters/sfx_add/add_amount = 1.0
 parameters/timescale/scale = false
 script = ExtResource("7_x42xx")
 
-[node name="CollisionShape3D" type="CollisionShape3D" parent="."]
+[node name="StandingCollider" type="CollisionShape3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.05, 0)
 shape = SubResource("CapsuleShape3D_s7f0r")
 
+[node name="CrouchingCollider" type="CollisionShape3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.4, 0)
+shape = SubResource("CapsuleShape3D_dpt0q")
+disabled = true
+
 [node name="PlayerHUD" parent="." instance=ExtResource("5_jvafu")]
 unique_name_in_owner = true
 
@@ -343,3 +556,37 @@ bus = &"SFX"
 [node name="FootCast" type="RayCast3D" parent="FootstepController"]
 unique_name_in_owner = true
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.0518835, 0)
+
+[node name="FootstepGameSoundEmitter" type="Area3D" parent="FootstepController"]
+unique_name_in_owner = true
+collision_layer = 0
+collision_mask = 16
+script = ExtResource("31_wcxbk")
+metadata/_custom_type_script = "uid://c5o1d2shq2qig"
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="FootstepController/FootstepGameSoundEmitter"]
+shape = SubResource("SphereShape3D_wcxbk")
+
+[node name="CrouchHeadArea" type="Area3D" parent="."]
+unique_name_in_owner = true
+collision_layer = 0
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="CrouchHeadArea"]
+shape = SubResource("CapsuleShape3D_wcxbk")
+
+[node name="CrouchAnimation" type="AnimationPlayer" parent="."]
+unique_name_in_owner = true
+libraries = {
+&"": SubResource("AnimationLibrary_wcxbk")
+}
+
+[node name="JumpGameSoundEmitter" type="Area3D" parent="."]
+unique_name_in_owner = true
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -1, 0)
+collision_layer = 0
+collision_mask = 16
+script = ExtResource("31_wcxbk")
+metadata/_custom_type_script = "uid://c5o1d2shq2qig"
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="JumpGameSoundEmitter"]
+shape = SubResource("SphereShape3D_p6grl")

src/props/bulkhead/bulkhead.gd

@@ -3,12 +3,14 @@ extends Node3D
 @onready var animation: AnimationPlayer = $AnimationPlayer
 @onready var dust_animation: AnimationPlayer = %DustAnimation
 @onready var open_sfx: AudioStreamPlayer3D = %OpenSFX
+@onready var bulkhead_game_sound_emitter: GameSoundEmitter = %BulkheadGameSoundEmitter
 
 
 func open() -> void:
 	animation.play("open")
 	dust_animation.play("spray")
 	open_sfx.play()
+	bulkhead_game_sound_emitter.emit_sound_here()
 
 
 func close() -> void:

src/props/bulkhead/bulkhead.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=19 format=4 uid="uid://cubwniraol1qn"]
+[gd_scene load_steps=21 format=4 uid="uid://cubwniraol1qn"]
 
 [ext_resource type="PackedScene" uid="uid://bopvgd18a1dl0" path="res://assets/props/bulkhead/bulkhead.gltf" id="1_77udb"]
 [ext_resource type="Material" uid="uid://dim1g2sr3axr5" path="res://assets/props/bulkhead/bulkhead_frame.material" id="2_88qrs"]
@@ -7,6 +7,7 @@
 [ext_resource type="Material" uid="uid://ba5iycnw36138" path="res://assets/props/bulkhead/bulkhead_door.material" id="3_w7oba"]
 [ext_resource type="AudioStream" uid="uid://6mm0npep4ul1" path="res://assets/sfx/mechanical_door.wav" id="5_4jho1"]
 [ext_resource type="AudioStream" uid="uid://dkdw7viq1nqte" path="res://assets/sfx/air_hiss.wav" id="7_4jho1"]
+[ext_resource type="Script" uid="uid://c5o1d2shq2qig" path="res://src/world/game_sound/game_sound_emitter.gd" id="8_bso71"]
 
 [sub_resource type="ArrayMesh" id="ArrayMesh_hx0vd"]
 _surfaces = [{
@@ -313,6 +314,9 @@ _data = {
 &"spray": SubResource("Animation_88qrs")
 }
 
+[sub_resource type="SphereShape3D" id="SphereShape3D_jo25b"]
+radius = 4.0
+
 [node name="Bulkhead" instance=ExtResource("1_77udb")]
 script = ExtResource("2_hknvo")
 
@@ -386,3 +390,14 @@ libraries = {
 [node name="DustSFX" type="AudioStreamPlayer3D" parent="Dust" index="5"]
 stream = ExtResource("7_4jho1")
 volume_db = -24.0
+
+[node name="BulkheadGameSoundEmitter" type="Area3D" parent="." index="6"]
+unique_name_in_owner = true
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.5, 0)
+collision_layer = 0
+collision_mask = 16
+script = ExtResource("8_bso71")
+metadata/_custom_type_script = "uid://c5o1d2shq2qig"
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="BulkheadGameSoundEmitter" index="0"]
+shape = SubResource("SphereShape3D_jo25b")

src/props/wall_switch/wall_switch.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=30 format=4 uid="uid://b6eg8t04rkh0c"]
+[gd_scene load_steps=32 format=4 uid="uid://b6eg8t04rkh0c"]
 
 [ext_resource type="Script" uid="uid://bkmn5m47mt1gh" path="res://src/props/wall_switch/wall_switch.gd" id="2_kfvqd"]
 [ext_resource type="Texture2D" uid="uid://1wjcyqynwlb6" path="res://assets/props/wall_switch/wall_switch_C.png" id="2_vufqs"]
@@ -12,6 +12,7 @@
 [ext_resource type="Script" uid="uid://deg5xd87cy8rg" path="res://src/props/interactive.gd" id="10_qw6jt"]
 [ext_resource type="AudioStream" uid="uid://bgayfws34lg7q" path="res://assets/sfx/click_electronic_04.wav" id="11_7shuc"]
 [ext_resource type="AudioStream" uid="uid://cnje66wrijwxw" path="res://assets/sfx/wall_switch.wav" id="12_2qpft"]
+[ext_resource type="Script" uid="uid://c5o1d2shq2qig" path="res://src/world/game_sound/game_sound_emitter.gd" id="13_eim2y"]
 
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_jtkkw"]
 resource_local_to_scene = true
@@ -248,6 +249,9 @@ _data = {
 [sub_resource type="BoxShape3D" id="BoxShape3D_6maql"]
 size = Vector3(0.475, 0.65, 0.2)
 
+[sub_resource type="SphereShape3D" id="SphereShape3D_mxsyy"]
+radius = 3.0
+
 [node name="WallSwitch" instance=ExtResource("2_whafo")]
 script = ExtResource("2_kfvqd")
 enabled = true
@@ -313,7 +317,17 @@ unique_name_in_owner = true
 wait_time = 2.8
 one_shot = true
 
+[node name="WallSwitchGameSoundEmitter" type="Area3D" parent="." index="7"]
+collision_layer = 0
+collision_mask = 16
+script = ExtResource("13_eim2y")
+metadata/_custom_type_script = "uid://c5o1d2shq2qig"
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="WallSwitchGameSoundEmitter" index="0"]
+shape = SubResource("SphereShape3D_mxsyy")
+
 [connection signal="animation_finished" from="AnimationPlayer" to="." method="_animation_finished"]
 [connection signal="clear_total_updated" from="GunkBody" to="." method="_on_gunk_body_clear_total_updated"]
 [connection signal="activated" from="Interactive" to="." method="_activate"]
 [connection signal="timeout" from="ActionDelay" to="." method="_on_action_delay_timeout"]
+[connection signal="timeout" from="ActionDelay" to="WallSwitchGameSoundEmitter" method="emit_sound_here"]

src/ui/menus/settings_menu/settings_menu.tscn

@@ -92,15 +92,15 @@ text = "SETTINGS_HEAD_BOB"
 [node name="TextCheckbox" parent="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/HeadBob/PanelContainer/MarginContainer" index="0"]
 physics_interpolation_mode = 0
 
-[node name="CameraHeading" type="HBoxContainer" parent="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList"]
+[node name="InputHeading" type="HBoxContainer" parent="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList"]
 layout_mode = 2
 
-[node name="Label" type="Label" parent="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/CameraHeading"]
+[node name="Label" type="Label" parent="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/InputHeading"]
 layout_mode = 2
 theme_type_variation = &"HeaderMedium"
-text = "SETTINGS_GAME_CAMERA_HEADING"
+text = "SETTINGS_GAME_INPUT_HEADING"
 
-[node name="HSeparator" type="HSeparator" parent="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/CameraHeading"]
+[node name="HSeparator" type="HSeparator" parent="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/InputHeading"]
 layout_mode = 2
 size_flags_horizontal = 3
 
@@ -148,6 +148,16 @@ text = "SETTINGS_INVERT_PITCH"
 [node name="TextCheckbox" parent="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/InvertPitch/PanelContainer/MarginContainer" index="0"]
 physics_interpolation_mode = 0
 
+[node name="HoldToSneak" parent="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList" groups=["Settings"] instance=ExtResource("2_f274v")]
+layout_mode = 2
+key = &"game/config/input/hold_to_sneak"
+
+[node name="SettingLabel" parent="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/HoldToSneak" index="1"]
+text = "SETTINGS_HOLD_TO_SNEAK"
+
+[node name="TextCheckbox" parent="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/HoldToSneak/PanelContainer/MarginContainer" index="0"]
+physics_interpolation_mode = 0
+
 [node name="SETTINGS_GRAPHICS" type="MarginContainer" parent="TabContainer"]
 visible = false
 layout_mode = 2
@@ -332,5 +342,6 @@ text = "UI_ACCEPT"
 [editable path="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/SensitivityY"]
 [editable path="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/MouseAcceleration"]
 [editable path="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/InvertPitch"]
+[editable path="TabContainer/SETTINGS_GAME/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/HoldToSneak"]
 [editable path="TabContainer/SETTINGS_GRAPHICS/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/Fullscreen"]
 [editable path="TabContainer/SETTINGS_GRAPHICS/VBoxContainer/ScrollContainer/MarginContainer/SettingsList/VSync"]

src/world/game_sound/game_sound_emitter.gd

@@ -0,0 +1,34 @@
+@tool
+class_name GameSoundEmitter extends Area3D
+## Sends an alert to any intersecting GameSoundListener on command
+
+
+func _set_collision() -> void:
+	collision_layer = 0
+	collision_mask = GameSoundListener.SOUND_COLLISION_LAYER
+
+
+func _ready() -> void:
+	_set_collision()
+
+
+func _process(_delta: float) -> void:
+	if Engine.is_editor_hint():
+		_set_collision()
+
+
+## Trigger a sound detection event on all GameSoundListeners in range.
+##
+## The source of the sound will be the global position of this emitter.
+func emit_sound_here() -> void:
+	emit_sound(global_position)
+
+
+## Trigger a sound detection event on all GameSoundListeners in range.
+##
+## `source` is the global position of the source of the sound.
+func emit_sound(source: Vector3) -> void:
+	print_debug(self, " emitted game sound at ", source)
+	for body: Node3D in self.get_overlapping_bodies():
+		if body is GameSoundListener:
+			(body as GameSoundListener).detect_sound(source)

src/world/game_sound/game_sound_emitter.gd.uid

@@ -0,0 +1 @@
+uid://c5o1d2shq2qig

src/world/game_sound/game_sound_listener.gd

@@ -0,0 +1,25 @@
+@tool
+class_name GameSoundListener extends StaticBody3D
+## Receives alerts from intersecting GameSoundEmitters
+
+signal sound_detected(source: Vector3)
+
+const SOUND_COLLISION_LAYER := 16
+
+
+func _set_collision() -> void:
+	collision_layer = SOUND_COLLISION_LAYER
+	collision_mask = 0
+
+
+func _ready() -> void:
+	_set_collision()
+
+
+func _process(_delta: float) -> void:
+	if Engine.is_editor_hint():
+		_set_collision()
+
+
+func detect_sound(source: Vector3) -> void:
+	sound_detected.emit(source)

src/world/game_sound/game_sound_listener.gd.uid

@@ -0,0 +1 @@
+uid://cfsiyhhrcua6o

src/world/mechanics/listener/listener.gd

@@ -0,0 +1,36 @@
+@tool
+extends GunkNode
+## Fires a trigger signal when a sound is made nearby
+
+signal triggered
+
+@export var quick_connect_to: SignalNode:
+	set = _editor_connect
+
+@export var splatter_scene: PackedScene
+
+# NOTE
+# trigger oscillation animation was generated using the formula
+# f(x) = e^(-0.25x) * cos(x * pi / 2 - pi/2) + 1 for x in {0, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 20}
+@onready var trigger_animation_player: AnimationPlayer = %TriggerAnimationPlayer
+@onready var cooldown_timer: Timer = %CooldownTimer
+
+
+func trigger() -> void:
+	if not cooldown_timer.is_stopped():
+		return
+
+	# TODO play sfx
+
+	trigger_animation_player.play("trigger")
+	triggered.emit()
+	cooldown_timer.start()
+
+
+func _destroy() -> void:
+	add_sibling(splatter_scene.instantiate())
+
+
+func _editor_connect(node: SignalNode) -> void:
+	triggered.connect(node.trigger, CONNECT_PERSIST)
+	self.notify_property_list_changed()

src/world/mechanics/listener/listener.gd.uid

@@ -0,0 +1 @@
+uid://bde7cglaqobkd

src/world/mechanics/listener/listener.tscn

@@ -0,0 +1,98 @@
+[gd_scene load_steps=9 format=3 uid="uid://kctp5erogwcb"]
+
+[ext_resource type="Script" uid="uid://bde7cglaqobkd" path="res://src/world/mechanics/listener/listener.gd" id="1_htscg"]
+[ext_resource type="PackedScene" uid="uid://xlt78xc1tmkl" path="res://src/effects/grunk_splatter.tscn" id="2_2ibh1"]
+[ext_resource type="Script" uid="uid://cfsiyhhrcua6o" path="res://src/world/game_sound/game_sound_listener.gd" id="2_htscg"]
+
+[sub_resource type="ConcavePolygonShape3D" id="ConcavePolygonShape3D_2ibh1"]
+data = PackedVector3Array(0, 0.05, 0.25, 0.0957, 0.05, 0.231, 0, -0.05, 0.2, 0.0957, 0.05, 0.231, 0.0765, -0.05, 0.1848, 0, -0.05, 0.2, 0.0957, 0.05, 0.231, 0.1768, 0.05, 0.1768, 0.0765, -0.05, 0.1848, 0.1768, 0.05, 0.1768, 0.1414, -0.05, 0.1414, 0.0765, -0.05, 0.1848, 0.1768, 0.05, 0.1768, 0.231, 0.05, 0.0957, 0.1414, -0.05, 0.1414, 0.231, 0.05, 0.0957, 0.1848, -0.05, 0.0765, 0.1414, -0.05, 0.1414, 0.231, 0.05, 0.0957, 0.25, 0.05, 0, 0.1848, -0.05, 0.0765, 0.25, 0.05, 0, 0.2, -0.05, 0, 0.1848, -0.05, 0.0765, 0.25, 0.05, 0, 0.231, 0.05, -0.0957, 0.2, -0.05, 0, 0.231, 0.05, -0.0957, 0.1848, -0.05, -0.0765, 0.2, -0.05, 0, 0.231, 0.05, -0.0957, 0.1768, 0.05, -0.1768, 0.1848, -0.05, -0.0765, 0.1768, 0.05, -0.1768, 0.1414, -0.05, -0.1414, 0.1848, -0.05, -0.0765, 0.1768, 0.05, -0.1768, 0.0957, 0.05, -0.231, 0.1414, -0.05, -0.1414, 0.0957, 0.05, -0.231, 0.0765, -0.05, -0.1848, 0.1414, -0.05, -0.1414, 0.0957, 0.05, -0.231, 0, 0.05, -0.25, 0.0765, -0.05, -0.1848, 0, 0.05, -0.25, 0, -0.05, -0.2, 0.0765, -0.05, -0.1848, 0, 0.05, -0.25, -0.0957, 0.05, -0.231, 0, -0.05, -0.2, -0.0957, 0.05, -0.231, -0.0765, -0.05, -0.1848, 0, -0.05, -0.2, -0.0957, 0.05, -0.231, -0.1768, 0.05, -0.1768, -0.0765, -0.05, -0.1848, -0.1768, 0.05, -0.1768, -0.1414, -0.05, -0.1414, -0.0765, -0.05, -0.1848, -0.1768, 0.05, -0.1768, -0.231, 0.05, -0.0957, -0.1414, -0.05, -0.1414, -0.231, 0.05, -0.0957, -0.1848, -0.05, -0.0765, -0.1414, -0.05, -0.1414, -0.231, 0.05, -0.0957, -0.25, 0.05, 0, -0.1848, -0.05, -0.0765, -0.25, 0.05, 0, -0.2, -0.05, 0, -0.1848, -0.05, -0.0765, -0.25, 0.05, 0, -0.231, 0.05, 0.0957, -0.2, -0.05, 0, -0.231, 0.05, 0.0957, -0.1848, -0.05, 0.0765, -0.2, -0.05, 0, -0.231, 0.05, 0.0957, -0.1768, 0.05, 0.1768, -0.1848, -0.05, 0.0765, -0.1768, 0.05, 0.1768, -0.1414, -0.05, 0.1414, -0.1848, -0.05, 0.0765, -0.1768, 0.05, 0.1768, -0.0957, 0.05, 0.231, -0.1414, -0.05, 0.1414, -0.0957, 0.05, 0.231, -0.0765, -0.05, 0.1848, -0.1414, -0.05, 0.1414, -0.0957, 0.05, 0.231, 0, 0.05, 0.25, -0.0765, -0.05, 0.1848, 0, 0.05, 0.25, 0, -0.05, 0.2, -0.0765, -0.05, 0.1848, 0, 0.05, 0, 0.0957, 0.05, 0.231, 0, 0.05, 0.25, 0, 0.05, 0, 0.1768, 0.05, 0.1768, 0.0957, 0.05, 0.231, 0, 0.05, 0, 0.231, 0.05, 0.0957, 0.1768, 0.05, 0.1768, 0, 0.05, 0, 0.25, 0.05, 0, 0.231, 0.05, 0.0957, 0, 0.05, 0, 0.231, 0.05, -0.0957, 0.25, 0.05, 0, 0, 0.05, 0, 0.1768, 0.05, -0.1768, 0.231, 0.05, -0.0957, 0, 0.05, 0, 0.0957, 0.05, -0.231, 0.1768, 0.05, -0.1768, 0, 0.05, 0, 0, 0.05, -0.25, 0.0957, 0.05, -0.231, 0, 0.05, 0, -0.0957, 0.05, -0.231, 0, 0.05, -0.25, 0, 0.05, 0, -0.1768, 0.05, -0.1768, -0.0957, 0.05, -0.231, 0, 0.05, 0, -0.231, 0.05, -0.0957, -0.1768, 0.05, -0.1768, 0, 0.05, 0, -0.25, 0.05, 0, -0.231, 0.05, -0.0957, 0, 0.05, 0, -0.231, 0.05, 0.0957, -0.25, 0.05, 0, 0, 0.05, 0, -0.1768, 0.05, 0.1768, -0.231, 0.05, 0.0957, 0, 0.05, 0, -0.0957, 0.05, 0.231, -0.1768, 0.05, 0.1768, 0, 0.05, 0, 0, 0.05, 0.25, -0.0957, 0.05, 0.231, 0, -0.05, 0, 0, -0.05, 0.2, 0.0765, -0.05, 0.1848, 0, -0.05, 0, 0.0765, -0.05, 0.1848, 0.1414, -0.05, 0.1414, 0, -0.05, 0, 0.1414, -0.05, 0.1414, 0.1848, -0.05, 0.0765, 0, -0.05, 0, 0.1848, -0.05, 0.0765, 0.2, -0.05, 0, 0, -0.05, 0, 0.2, -0.05, 0, 0.1848, -0.05, -0.0765, 0, -0.05, 0, 0.1848, -0.05, -0.0765, 0.1414, -0.05, -0.1414, 0, -0.05, 0, 0.1414, -0.05, -0.1414, 0.0765, -0.05, -0.1848, 0, -0.05, 0, 0.0765, -0.05, -0.1848, 0, -0.05, -0.2, 0, -0.05, 0, 0, -0.05, -0.2, -0.0765, -0.05, -0.1848, 0, -0.05, 0, -0.0765, -0.05, -0.1848, -0.1414, -0.05, -0.1414, 0, -0.05, 0, -0.1414, -0.05, -0.1414, -0.1848, -0.05, -0.0765, 0, -0.05, 0, -0.1848, -0.05, -0.0765, -0.2, -0.05, 0, 0, -0.05, 0, -0.2, -0.05, 0, -0.1848, -0.05, 0.0765, 0, -0.05, 0, -0.1848, -0.05, 0.0765, -0.1414, -0.05, 0.1414, 0, -0.05, 0, -0.1414, -0.05, 0.1414, -0.0765, -0.05, 0.1848, 0, -0.05, 0, -0.0765, -0.05, 0.1848, 0, -0.05, 0.2)
+
+[sub_resource type="CylinderMesh" id="CylinderMesh_ud3xk"]
+top_radius = 0.25
+bottom_radius = 0.2
+height = 0.1
+radial_segments = 16
+rings = 0
+
+[sub_resource type="Animation" id="Animation_htscg"]
+resource_name = "trigger"
+length = 2.0
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("CollisionShape3D:scale")
+tracks/0/interp = 2
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.1, 1.3, 1.5, 1.7, 1.9, 2),
+"transitions": PackedFloat32Array(0.618, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1),
+"update": 0,
+"values": [Vector3(1, 1, 1), Vector3(1.779, 1.779, 1.779), Vector3(0.528, 0.528, 0.528), Vector3(1.287, 1.287, 1.287), Vector3(0.826, 0.826, 0.826), Vector3(1.105, 1.105, 1.105), Vector3(0.936, 0.936, 0.936), Vector3(1.039, 1.039, 1.039), Vector3(0.976, 0.976, 0.976), Vector3(1.014, 1.014, 1.014), Vector3(0.991, 0.991, 0.991), Vector3(1, 1, 1)]
+}
+
+[sub_resource type="Animation" id="Animation_2ibh1"]
+length = 0.001
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("CollisionShape3D:scale")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 0,
+"values": [Vector3(1, 1, 1)]
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_2ibh1"]
+_data = {
+&"RESET": SubResource("Animation_2ibh1"),
+&"trigger": SubResource("Animation_htscg")
+}
+
+[node name="Listener" type="StaticBody3D"]
+collision_layer = 5
+collision_mask = 0
+script = ExtResource("1_htscg")
+splatter_scene = ExtResource("2_2ibh1")
+durability = 3.0
+value = 4000.0
+metadata/_custom_type_script = "uid://bypgxi0gy56yk"
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.05, 0)
+shape = SubResource("ConcavePolygonShape3D_2ibh1")
+
+[node name="GameSoundListener" type="StaticBody3D" parent="CollisionShape3D"]
+collision_layer = 16
+collision_mask = 0
+script = ExtResource("2_htscg")
+metadata/_custom_type_script = "uid://cfsiyhhrcua6o"
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="CollisionShape3D/GameSoundListener"]
+shape = SubResource("ConcavePolygonShape3D_2ibh1")
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="CollisionShape3D"]
+mesh = SubResource("CylinderMesh_ud3xk")
+skeleton = NodePath("../..")
+
+[node name="Label3D" type="Label3D" parent="CollisionShape3D/MeshInstance3D"]
+transform = Transform3D(1, 0, 0, 0, -4.37114e-08, 1, 0, -1, -4.37114e-08, 0, 0.051, 0)
+pixel_size = 0.001
+text = "LISTENER"
+font_size = 92
+outline_size = 20
+
+[node name="CooldownTimer" type="Timer" parent="."]
+unique_name_in_owner = true
+wait_time = 4.0
+one_shot = true
+
+[node name="TriggerAnimationPlayer" type="AnimationPlayer" parent="."]
+unique_name_in_owner = true
+libraries = {
+&"": SubResource("AnimationLibrary_2ibh1")
+}
+
+[connection signal="sound_detected" from="CollisionShape3D/GameSoundListener" to="." method="trigger" unbinds=1]