Add MusicSingleton and OnMusicChangedSlowTrigger

3d_platforma/Level.tscn

@@ -1,5 +1,6 @@
-[gd_scene load_steps=34 format=2]
+[gd_scene load_steps=35 format=2]
 
+[ext_resource path="res://scripts/OnMusicChangedSlowTrigger.gd" type="Script" id=1]
 [ext_resource path="res://3d_platforma/golden_bay_512.hdr" type="Texture" id=2]
 [ext_resource path="res://3d_platforma/sqare_norm.png" type="Texture" id=4]
 [ext_resource path="res://3d_platforma/texture_08.png" type="Texture" id=5]
@@ -563,3 +564,6 @@ light_energy = 0.65
 
 [node name="WorldEnvironment" type="WorldEnvironment" parent="."]
 environment = SubResource( 24 )
+
+[node name="MusicChangedSlowAction" type="Node" parent="."]
+script = ExtResource( 1 )

project.godot

@@ -8,12 +8,26 @@
 
 config_version=4
 
+_global_script_classes=[ {
+"base": "Node",
+"class": "MusicChangedSlowAction",
+"language": "GDScript",
+"path": "res://scripts/OnMusicChangedSlowTrigger.gd"
+} ]
+_global_script_class_icons={
+"MusicChangedSlowAction": ""
+}
+
 [application]
 
 config/name="first_anniversary_godot_jam"
 run/main_scene="res://3d_platforma/Level.tscn"
 config/icon="res://icon.png"
 
+[autoload]
+
+MusicSingleton="*res://scripts/MusicSingleton.gd"
+
 [display]
 
 window/size/width=480

scripts/MusicSingleton.gd

@@ -0,0 +1,18 @@
+extends Node
+
+func _ready() -> void:
+	print("Loaded Music singleton")
+
+var change_slow_actions : Array = []
+
+func register_change_action(change_action : Node) -> void:
+	print("Registered change action")
+	change_slow_actions.append(change_action)
+	
+func unregister_change_action(change_action : Node) -> void:
+	print("Unregistered change action")
+	change_slow_actions.erase(change_action)
+	
+func change_music() -> void:
+	for change_action in change_slow_actions:
+		change_action.execute()

scripts/OnMusicChangedSlowTrigger.gd

@@ -0,0 +1,11 @@
+class_name MusicChangedSlowAction extends Node
+
+func _ready():
+	MusicSingleton.register_change_action(self)
+	MusicSingleton.change_music()
+
+func _exit_tree():
+	MusicSingleton.unregister_change_action(self)
+	
+func execute() -> void:
+	print("Executed OnMusicChangedSlowAction")