add ambient sounds

.gitignore

@@ -7,3 +7,4 @@
 !.gdignore
 
 *.tmp
+*.*~

assets/audio/ambient/ambient_1.ogg.import

@@ -0,0 +1,19 @@
+[remap]
+
+importer="oggvorbisstr"
+type="AudioStreamOggVorbis"
+uid="uid://xcflll7pg3ou"
+path="res://.godot/imported/ambient_1.ogg-9dce9b12b9b553370aa400c3c144cfe3.oggvorbisstr"
+
+[deps]
+
+source_file="res://assets/audio/ambient/ambient_1.ogg"
+dest_files=["res://.godot/imported/ambient_1.ogg-9dce9b12b9b553370aa400c3c144cfe3.oggvorbisstr"]
+
+[params]
+
+loop=true
+loop_offset=0.0
+bpm=0.0
+beat_count=0
+bar_beats=4

assets/audio/ambient/ambient_2.ogg.import

@@ -0,0 +1,19 @@
+[remap]
+
+importer="oggvorbisstr"
+type="AudioStreamOggVorbis"
+uid="uid://c00xm63xawjah"
+path="res://.godot/imported/ambient_2.ogg-9fd262e07a9da4fd8af8e1e718d5f2a2.oggvorbisstr"
+
+[deps]
+
+source_file="res://assets/audio/ambient/ambient_2.ogg"
+dest_files=["res://.godot/imported/ambient_2.ogg-9fd262e07a9da4fd8af8e1e718d5f2a2.oggvorbisstr"]
+
+[params]
+
+loop=true
+loop_offset=0.0
+bpm=0.0
+beat_count=0
+bar_beats=4

assets/audio/ambient/ambient_3.ogg.import

@@ -0,0 +1,19 @@
+[remap]
+
+importer="oggvorbisstr"
+type="AudioStreamOggVorbis"
+uid="uid://bk3pj7hspvmiy"
+path="res://.godot/imported/ambient_3.ogg-3c3ea051c9a5d56729a6b7174c8100c9.oggvorbisstr"
+
+[deps]
+
+source_file="res://assets/audio/ambient/ambient_3.ogg"
+dest_files=["res://.godot/imported/ambient_3.ogg-3c3ea051c9a5d56729a6b7174c8100c9.oggvorbisstr"]
+
+[params]
+
+loop=true
+loop_offset=0.0
+bpm=0.0
+beat_count=0
+bar_beats=4

default_bus_layout.tres

@@ -0,0 +1,14 @@
+[gd_resource type="AudioBusLayout" load_steps=2 format=3 uid="uid://cunpi1eovxtlu"]
+
+[sub_resource type="AudioEffectHighPassFilter" id="AudioEffectHighPassFilter_dfyge"]
+resource_name = "HighPassFilter"
+
+[resource]
+bus/1/name = &"ambient"
+bus/1/solo = false
+bus/1/mute = false
+bus/1/bypass_fx = false
+bus/1/volume_db = 0.0
+bus/1/send = &"Master"
+bus/1/effect/0/effect = SubResource("AudioEffectHighPassFilter_dfyge")
+bus/1/effect/0/enabled = true

scenes/test_world.tscn

@@ -1,9 +1,10 @@
-[gd_scene load_steps=15 format=3 uid="uid://ceru75se7ifkb"]
+[gd_scene load_steps=16 format=3 uid="uid://ceru75se7ifkb"]
 
 [ext_resource type="Script" path="res://scripts/main_camera.gd" id="1_gnxhh"]
 [ext_resource type="PackedScene" uid="uid://d4c6ujs1ra1ob" path="res://scenes/units/aphid.tscn" id="3_eh22j"]
 [ext_resource type="PackedScene" uid="uid://c70rhvk2okkcu" path="res://scenes/ui/buy_ants.tscn" id="4_irvxk"]
 [ext_resource type="PackedScene" uid="uid://davys5ol18oyo" path="res://scenes/ui/pause_menu.tscn" id="5_ljrsn"]
+[ext_resource type="Script" path="res://scripts/ambient_audio.gd" id="7_413eh"]
 [ext_resource type="PackedScene" uid="uid://clftjlaotf2g2" path="res://scenes/structures/anthill.tscn" id="7_f30w3"]
 [ext_resource type="PackedScene" uid="uid://d8ut24fit87x" path="res://scenes/ui/anthill_info.tscn" id="8_ohyy4"]
 
@@ -107,3 +108,8 @@ transform = Transform3D(1, 0, 0, 0, 0.819152, 0.573576, 0, -0.573576, 0.819152,
 current = true
 far = 200.0
 script = ExtResource("1_gnxhh")
+
+[node name="AmbientAudio" type="AudioStreamPlayer" parent="."]
+process_mode = 3
+bus = &"ambient"
+script = ExtResource("7_413eh")

scripts/ambient_audio.gd

@@ -0,0 +1,34 @@
+extends AudioStreamPlayer
+
+const ZOOMED_IN_CUTOFF = 10000
+const ZOOMED_OUT_CUTOFF = 10
+
+var audio_1 := preload("res://assets/audio/ambient/ambient_1.ogg")
+var audio_2 := preload("res://assets/audio/ambient/ambient_2.ogg")
+var audio_3 := preload("res://assets/audio/ambient/ambient_3.ogg")
+
+var streams: Array[AudioStream] = [audio_1, audio_2, audio_3]
+var filter: AudioEffectHighPassFilter
+
+@onready var main_camera: MainCamera = $/root/World/MainCamera
+
+
+func _ready() -> void:
+	assert(main_camera != null, "main_camera missing!")
+
+	var bus_idx := AudioServer.get_bus_index(bus)
+	for effect_idx in AudioServer.get_bus_effect_count(bus_idx):
+		var effect := AudioServer.get_bus_effect(bus_idx, effect_idx)
+		if effect is AudioEffectHighPassFilter:
+			filter = effect
+
+	stream = streams.pick_random()
+	play()
+
+
+func _process(_delta: float) -> void:
+	filter.cutoff_hz = lerp(
+			ZOOMED_IN_CUTOFF, 
+			ZOOMED_OUT_CUTOFF, 
+			main_camera.zoom_value,
+	)

scripts/main_camera.gd

@@ -1,4 +1,5 @@
 extends Camera3D
+class_name MainCamera
 
 enum CameraState {
 	FREE,
@@ -39,6 +40,8 @@ var state: CameraState = CameraState.FREE
 
 var window_out_of_focus: bool = false
 
+@onready var anthill: Anthill = $/root/World/Structures/Anthill
+
 
 func _process(delta: float) -> void:
 	_handle_heading_to(delta)
@@ -71,7 +74,7 @@ func _input(event: InputEvent) -> void:
 			zoom_raw = clamp(zoom_raw, 0, 1)
 
 	if event.is_action_pressed("reset_camera"):
-		head_to(Vector3.ZERO)
+		head_to(anthill.global_position)
 
 
 func _notification(what: int) -> void:
@@ -93,8 +96,8 @@ func head_to(to: Vector3, zoom: float = ZOOM_VALUE_DEFAULT) -> void:
 
 func _handle_movement(delta: float) -> void:
 	if (
-			window_out_of_focus 
-			or state != CameraState.FREE 
+			window_out_of_focus
+			or state != CameraState.FREE
 			or CursorManager.disable_confinement
 			or SelectionManager.selecting
 	):