Implement audio management system with effects and music players; add settings for sound and music volume

tests/test_effects_player.gd

@@ -0,0 +1,47 @@
+extends SceneTree
+
+var checks: int = 0
+var failures: int = 0
+
+
+func _initialize() -> void:
+    call_deferred("run")
+
+
+func check(condition: bool, message: String) -> void:
+    checks += 1
+    if not condition:
+        failures += 1
+        push_error(message)
+
+
+func run() -> void:
+    var player := OwniverseEffectsPlayer.new()
+    root.add_child(player)
+
+    check(player.play_effect("select"), "Known effect starts")
+    check(player.stream == player._effects.select and player.playing, "Selected effect is playing")
+    var selected_stream: AudioStream = player.stream
+    check(not player.play_effect("select"), "Playing effect is not restarted")
+    check(player.stream == selected_stream and player.playing, "Rejected duplicate keeps current playback")
+    player.stop()
+    check(not player.play_effect("select"), "Named effect is rejected during its two-second cooldown")
+    check(player.play_effect("blast"), "Different effect starts without waiting for another name")
+    player.stop()
+    player._last_played_msec.select -= player.EFFECT_COOLDOWN_MSEC
+    check(player.play_effect("select"), "Named effect starts after its cooldown")
+    check(not player.play_effect("missing_effect"), "Unknown effect is rejected")
+    check(player.stream == player._effects.select, "Unknown effect does not interrupt playback")
+
+    player.set_enabled(false)
+    check(player.stream_paused, "Disabling effects pauses current playback")
+    check(not player.play_effect("blast") and player.stream == player._effects.select, "Disabled player rejects new effects")
+    player.set_enabled(true)
+    check(not player.stream_paused, "Enabling effects resumes current playback")
+
+    player.stop()
+    player.stream = null
+    player.free()
+    await process_frame
+    print("Effects player: %d checks, %d failures" % [checks, failures])
+    quit(0 if failures == 0 else 1)