Added bg_sound manager and according ESC command.

Started transitions scene.

addons/escoria-core/game/scenes/inventory/inventory_ui.gd

@@ -15,7 +15,7 @@ The scene MUST contain the 2 following nodes:
 
 
 # Define the actual container node to add items as children of. Should be a Container.
-export(NodePath) var items_container
+export(NodePath) var inventory_ui_container
 onready var all_items = $ESCORIA_ALL_ITEMS
 
 var items_ids_in_inventory : Dictionary = {} # { item_id : TextureButton}
@@ -30,10 +30,10 @@ func _ready():
 		
 	escoria.register_object(self)
 	
-	if items_container == null or items_container.is_empty():
+	if inventory_ui_container == null or inventory_ui_container.is_empty():
 		escoria.logger.report_errors(self.get_path(), ["Items container is empty."])
 		return
-	for c in get_node(items_container).get_items():
+	for c in get_node(inventory_ui_container).get_items():
 		items_ids_in_inventory[c.item_id] = c
 #		c.connect("pressed", escoria.inputs_manager, "_on_inventory_item_pressed", [c.item_id])
 		
@@ -55,7 +55,7 @@ func add_new_item_by_id(item_id : String) -> void:
 				"Check item's id in ESCORIA_ALL_ITEMS scene."])
 		var item_inventory_button = all_items.get_inventory_item(item_id).duplicate()
 		items_ids_in_inventory[item_id] = item_inventory_button
-		get_node(items_container).add_item(item_inventory_button)
+		get_node(inventory_ui_container).add_item(item_inventory_button)
 		
 		# Add the item to inventory
 		if !escoria.esc_runner.objects.has(item_id):
@@ -90,7 +90,7 @@ func remove_item_by_id(item_id : String) -> void:
 		item_inventory_button.disconnect("inventory_item_unfocused", 
 			escoria.inputs_manager, "_on_mouse_exited_inventory_item")
 		
-		get_node(items_container).remove_item(item_inventory_button)
+		get_node(inventory_ui_container).remove_item(item_inventory_button)
 		item_inventory_button.queue_free()
 		items_ids_in_inventory.erase(item_id)
 

addons/escoria-core/game/scenes/sound/bg_music.gd

@@ -0,0 +1,42 @@
+extends Control
+class_name ESCBackgroundMusic
+
+func get_class():
+	return "ESCBackgroundMusic"
+
+onready var stream = $AudioStreamPlayer
+var state = "default"
+export var global_id = "bg_music"
+
+
+func game_cleared():
+	set_state("off", true)
+	self.disconnect("tree_exited", escoria.esc_runner, "object_exit_scene")
+	escoria.register_object(self)
+
+
+func set_state(p_state, p_force = false):
+	# If already playing this stream, keep playing, unless p_force
+	if p_state == state and not p_force and stream.is_playing():
+		return
+
+	state = p_state
+
+	# If state is "off"/"default", turn off music
+	if state == "off" or state == "default":
+		stream.stream = null
+		return
+
+	var resource = load(p_state)
+
+	stream.stream = resource
+
+	if stream.stream:
+		resource.set_loop(true)
+		if ProjectSettings.has_setting("escoria/sound/music_volume"):
+			stream.volume_db = ProjectSettings.get_setting("escoria/sound/music_volume")
+		stream.play()
+
+func _ready():
+	escoria.register_object(self)
+

addons/escoria-core/game/scenes/sound/bg_music.tscn

@@ -0,0 +1,16 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://addons/escoria-core/game/scenes/sound/bg_music.gd" type="Script" id=1]
+
+[node name="bg_music" type="Control"]
+anchor_right = 1.0
+anchor_bottom = 1.0
+margin_right = -1680.0
+margin_bottom = -1050.0
+mouse_filter = 2
+script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="AudioStreamPlayer" type="AudioStreamPlayer" parent="."]

addons/escoria-core/game/scenes/sound/bg_sound.gd

@@ -0,0 +1,41 @@
+extends Control
+class_name ESCBackgroundSound
+
+func get_class():
+	return "ESCBackgroundSound"
+
+onready var stream = $AudioStreamPlayer
+var state = "default"
+export var global_id = "bg_sound"
+
+
+func game_cleared():
+	stream.stream = null
+	escoria.register_object(self)
+
+
+func set_state(p_state, p_force = false):
+	# If already playing this stream, keep playing, unless p_force
+	if p_state == state and not p_force and stream.is_playing():
+		return
+
+	state = p_state
+
+	# If state is "off"/"default", turn off music
+	if state == "off" or state == "default":
+		stream.stream = null
+		return
+
+	var resource = load(p_state)
+
+	stream.stream = resource
+
+	if stream.stream:
+		resource.set_loop(false)
+		if ProjectSettings.has_setting("escoria/sound/sound_volume"):
+			stream.volume_db = ProjectSettings.get_setting("escoria/sound/sound_volume")
+		stream.play()
+
+
+func _ready():
+	escoria.register_object(self)

addons/escoria-core/game/scenes/sound/bg_sound.tscn

@@ -0,0 +1,16 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://addons/escoria-core/game/scenes/sound/bg_sound.gd" type="Script" id=1]
+
+[node name="bg_sound" type="Control"]
+anchor_right = 1.0
+anchor_bottom = 1.0
+margin_right = -1680.0
+margin_bottom = -1050.0
+mouse_filter = 2
+script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="AudioStreamPlayer" type="AudioStreamPlayer" parent="."]

addons/escoria-core/game/scenes/transitions/transition.gd

@@ -0,0 +1,28 @@
+extends ColorRect
+
+export(String, "fade_black", "fade_white", "transition_in", "transition_out") var transition_name
+# Reference to the _AnimationPlayer_ node
+onready var _anim_player := $AnimationPlayer
+
+
+
+signal transition_done
+
+
+func _ready() -> void:
+	# Plays the animation backward to fade in
+	_anim_player.play_backwards(transition_name)
+
+
+func fade_out() -> void:
+	# Plays the Fade animation and wait until it finishes
+	_anim_player.play(transition_name)
+	yield(_anim_player, "animation_finished")
+	emit_signal("transition_done")
+
+func fade_in() -> void:
+	# Plays the Fade animation and wait until it finishes
+	_anim_player.play_backwards(transition_name)
+	yield(_anim_player, "animation_finished")
+	emit_signal("transition_done")
+

addons/escoria-core/game/scenes/transitions/transition.tscn

@@ -0,0 +1,83 @@
+[gd_scene load_steps=7 format=2]
+
+[ext_resource path="res://addons/escoria-core/game/scenes/transitions/transition.gd" type="Script" id=1]
+[ext_resource path="res://addons/escoria-core/game/scenes/transitions/shaders/transition.material" type="Material" id=2]
+
+[sub_resource type="Animation" id=1]
+resource_name = "fade_black"
+length = 0.5
+tracks/0/type = "value"
+tracks/0/path = NodePath(".:modulate")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"times": PoolRealArray( 0, 0.5 ),
+"transitions": PoolRealArray( 1, 1 ),
+"update": 0,
+"values": [ Color( 0, 0, 0, 0 ), Color( 0, 0, 0, 1 ) ]
+}
+
+[sub_resource type="Animation" id=2]
+resource_name = "fade_white"
+length = 0.5
+tracks/0/type = "value"
+tracks/0/path = NodePath(".:modulate")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"times": PoolRealArray( 0, 0.5 ),
+"transitions": PoolRealArray( 1, 1 ),
+"update": 0,
+"values": [ Color( 1, 1, 1, 0 ), Color( 1, 1, 1, 1 ) ]
+}
+
+[sub_resource type="Animation" id=3]
+resource_name = "transition_in"
+tracks/0/type = "value"
+tracks/0/path = NodePath(".:material:shader_param/cutoff")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"times": PoolRealArray( 0, 1 ),
+"transitions": PoolRealArray( 1, 1 ),
+"update": 0,
+"values": [ 0.0, 1.0 ]
+}
+
+[sub_resource type="Animation" id=4]
+resource_name = "transition_out"
+tracks/0/type = "value"
+tracks/0/path = NodePath(".:material:shader_param/cutoff")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"times": PoolRealArray( 0, 1 ),
+"transitions": PoolRealArray( 1, 1 ),
+"update": 0,
+"values": [ 1.0, 0.0 ]
+}
+
+[node name="scene_transition" type="ColorRect"]
+material = ExtResource( 2 )
+anchor_right = 1.0
+anchor_bottom = 1.0
+mouse_filter = 2
+script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+transition_name = "transition_out"
+
+[node name="AnimationPlayer" type="AnimationPlayer" parent="."]
+anims/fade_black = SubResource( 1 )
+anims/fade_white = SubResource( 2 )
+anims/transition_in = SubResource( 3 )
+anims/transition_out = SubResource( 4 )