Implement blending audio feature to AnimationTree

6 files changed, 41 insertions, 0 deletions

diff --git a/doc/classes/Animation.xml b/doc/classes/Animation.xml
index c0626dcfe4..74ee13a3d2 100644
--- a/doc/classes/Animation.xml
+++ b/doc/classes/Animation.xml
@@ -104,6 +104,13 @@
 				[param stream] is the [AudioStream] resource to play. [param start_offset] is the number of seconds cut off at the beginning of the audio stream, while [param end_offset] is at the ending.
 			</description>
 		</method>
+		<method name="audio_track_is_use_blend" qualifiers="const">
+			<return type="bool" />
+			<param index="0" name="track_idx" type="int" />
+			<description>
+				Returns [code]true[/code] if the track at [code]idx[/code] will be blended with other animations.
+			</description>
+		</method>
 		<method name="audio_track_set_key_end_offset">
 			<return type="void" />
 			<param index="0" name="track_idx" type="int" />
@@ -131,6 +138,14 @@
 				Sets the stream of the key identified by [param key_idx] to value [param stream]. The [param track_idx] must be the index of an Audio Track.
 			</description>
 		</method>
+		<method name="audio_track_set_use_blend">
+			<return type="void" />
+			<param index="0" name="track_idx" type="int" />
+			<param index="1" name="enable" type="bool" />
+			<description>
+				Sets whether the track will be blended with other animations. If [code]true[/code], the audio playback volume changes depending on the blend value.
+			</description>
+		</method>
 		<method name="bezier_track_get_key_in_handle" qualifiers="const">
 			<return type="Vector2" />
 			<param index="0" name="track_idx" type="int" />
diff --git a/doc/classes/AnimationPlayer.xml b/doc/classes/AnimationPlayer.xml
index 8982eeedb2..25e4a4549d 100644
--- a/doc/classes/AnimationPlayer.xml
+++ b/doc/classes/AnimationPlayer.xml
@@ -232,6 +232,10 @@
 		<member name="assigned_animation" type="String" setter="set_assigned_animation" getter="get_assigned_animation">
 			If playing, the the current animation's key, otherwise, the animation last played. When set, this changes the animation, but will not play it unless already playing. See also [member current_animation].
 		</member>
+		<member name="audio_max_polyphony" type="int" setter="set_audio_max_polyphony" getter="get_audio_max_polyphony" default="32">
+			The number of possible simultaneous sounds for each of the assigned AudioStreamPlayers.
+			For example, if this value is [code]32[/code] and the animation has two audio tracks, the two [AudioStreamPlayer]s assigned can play simultaneously up to [code]32[/code] voices each.
+		</member>
 		<member name="autoplay" type="String" setter="set_autoplay" getter="get_autoplay" default="&quot;&quot;">
 			The key of the animation to play when the scene loads.
 		</member>
diff --git a/doc/classes/AnimationTree.xml b/doc/classes/AnimationTree.xml
index 3a3e8bb1fa..86562c340d 100644
--- a/doc/classes/AnimationTree.xml
+++ b/doc/classes/AnimationTree.xml
@@ -110,6 +110,10 @@
 		<member name="anim_player" type="NodePath" setter="set_animation_player" getter="get_animation_player" default="NodePath(&quot;&quot;)">
 			The path to the [AnimationPlayer] used for animating.
 		</member>
+		<member name="audio_max_polyphony" type="int" setter="set_audio_max_polyphony" getter="get_audio_max_polyphony" default="32">
+			The number of possible simultaneous sounds for each of the assigned AudioStreamPlayers.
+			For example, if this value is [code]32[/code] and the animation has two audio tracks, the two [AudioStreamPlayer]s assigned can play simultaneously up to [code]32[/code] voices each.
+		</member>
 		<member name="process_callback" type="int" setter="set_process_callback" getter="get_process_callback" enum="AnimationTree.AnimationProcessCallback" default="1">
 			The process mode of this [AnimationTree]. See [enum AnimationProcessCallback] for available modes.
 		</member>
diff --git a/doc/classes/AudioStreamPlayer.xml b/doc/classes/AudioStreamPlayer.xml
index 06e183f4e2..9b3a4f7bba 100644
--- a/doc/classes/AudioStreamPlayer.xml
+++ b/doc/classes/AudioStreamPlayer.xml
@@ -28,6 +28,12 @@
 				Returns the [AudioStreamPlayback] object associated with this [AudioStreamPlayer].
 			</description>
 		</method>
+		<method name="has_stream_playback">
+			<return type="bool" />
+			<description>
+				Returns whether the [AudioStreamPlayer] can return the [AudioStreamPlayback] object or not.
+			</description>
+		</method>
 		<method name="play">
 			<return type="void" />
 			<param index="0" name="from_position" type="float" default="0.0" />
diff --git a/doc/classes/AudioStreamPlayer2D.xml b/doc/classes/AudioStreamPlayer2D.xml
index 81755b580f..18869e87cb 100644
--- a/doc/classes/AudioStreamPlayer2D.xml
+++ b/doc/classes/AudioStreamPlayer2D.xml
@@ -25,6 +25,12 @@
 				Returns the [AudioStreamPlayback] object associated with this [AudioStreamPlayer2D].
 			</description>
 		</method>
+		<method name="has_stream_playback">
+			<return type="bool" />
+			<description>
+				Returns whether the [AudioStreamPlayer] can return the [AudioStreamPlayback] object or not.
+			</description>
+		</method>
 		<method name="play">
 			<return type="void" />
 			<param index="0" name="from_position" type="float" default="0.0" />
diff --git a/doc/classes/AudioStreamPlayer3D.xml b/doc/classes/AudioStreamPlayer3D.xml
index f711210ca1..d5a06dcad6 100644
--- a/doc/classes/AudioStreamPlayer3D.xml
+++ b/doc/classes/AudioStreamPlayer3D.xml
@@ -25,6 +25,12 @@
 				Returns the [AudioStreamPlayback] object associated with this [AudioStreamPlayer3D].
 			</description>
 		</method>
+		<method name="has_stream_playback">
+			<return type="bool" />
+			<description>
+				Returns whether the [AudioStreamPlayer] can return the [AudioStreamPlayback] object or not.
+			</description>
+		</method>
 		<method name="play">
 			<return type="void" />
 			<param index="0" name="from_position" type="float" default="0.0" />