Add method to manually advance AnimationTree and manual process mode.

doc/classes/AnimationPlayer.xml

@@ -283,5 +283,8 @@
 		<constant name="ANIMATION_PROCESS_IDLE" value="1" enum="AnimationProcessMode">
 			Process animation during the idle process.
 		</constant>
+		<constant name="ANIMATION_PROCESS_MANUAL" value="2" enum="AnimationProcessMode">
+			Do not process animation. Use the 'advance' method to process the animation manually.
+		</constant>
 	</constants>
 </class>

doc/classes/AnimationTree.xml

@@ -9,6 +9,14 @@
 	<demos>
 	</demos>
 	<methods>
+		<method name="advance">
+			<return type="void">
+			</return>
+			<argument index="0" name="delta" type="float">
+			</argument>
+			<description>
+			</description>
+		</method>
 		<method name="get_root_motion_transform" qualifiers="const">
 			<return type="Transform">
 			</return>
@@ -33,5 +41,7 @@
 		</constant>
 		<constant name="ANIMATION_PROCESS_IDLE" value="1" enum="AnimationProcessMode">
 		</constant>
+		<constant name="ANIMATION_PROCESS_MANUAL" value="2" enum="AnimationProcessMode">
+		</constant>
 	</constants>
 </class>

scene/animation/animation_player.cpp

@@ -1644,7 +1644,7 @@ void AnimationPlayer::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::REAL, "current_animation_position", PROPERTY_HINT_NONE, "", 0), "", "get_current_animation_position");
 
 	ADD_GROUP("Playback Options", "playback_");
-	ADD_PROPERTY(PropertyInfo(Variant::INT, "playback_process_mode", PROPERTY_HINT_ENUM, "Physics,Idle"), "set_animation_process_mode", "get_animation_process_mode");
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "playback_process_mode", PROPERTY_HINT_ENUM, "Physics,Idle,Manual"), "set_animation_process_mode", "get_animation_process_mode");
 	ADD_PROPERTY(PropertyInfo(Variant::REAL, "playback_default_blend_time", PROPERTY_HINT_RANGE, "0,4096,0.01"), "set_default_blend_time", "get_default_blend_time");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "playback_active", PROPERTY_HINT_NONE, "", 0), "set_active", "is_active");
 	ADD_PROPERTY(PropertyInfo(Variant::REAL, "playback_speed", PROPERTY_HINT_RANGE, "-64,64,0.01"), "set_speed_scale", "get_speed_scale");
@@ -1656,6 +1656,7 @@ void AnimationPlayer::_bind_methods() {
 
 	BIND_ENUM_CONSTANT(ANIMATION_PROCESS_PHYSICS);
 	BIND_ENUM_CONSTANT(ANIMATION_PROCESS_IDLE);
+	BIND_ENUM_CONSTANT(ANIMATION_PROCESS_MANUAL);
 }
 
 AnimationPlayer::AnimationPlayer() {

scene/animation/animation_player.h

@@ -65,6 +65,7 @@ public:
 	enum AnimationProcessMode {
 		ANIMATION_PROCESS_PHYSICS,
 		ANIMATION_PROCESS_IDLE,
+		ANIMATION_PROCESS_MANUAL,
 	};
 
 private:

scene/animation/animation_tree.cpp

@@ -1199,6 +1199,11 @@ void AnimationTree::_process_graph(float p_delta) {
 	}
 }
 
+void AnimationTree::advance(float p_time) {
+
+	_process_graph(p_time);
+}
+
 void AnimationTree::_notification(int p_what) {
 
 	if (active && p_what == NOTIFICATION_INTERNAL_PHYSICS_PROCESS && process_mode == ANIMATION_PROCESS_PHYSICS) {
@@ -1310,17 +1315,20 @@ void AnimationTree::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("get_root_motion_transform"), &AnimationTree::get_root_motion_transform);
 
+	ClassDB::bind_method(D_METHOD("advance", "delta"), &AnimationTree::advance);
+
 	ClassDB::bind_method(D_METHOD("_node_removed"), &AnimationTree::_node_removed);
 
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "tree_root", PROPERTY_HINT_RESOURCE_TYPE, "AnimationRootNode", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_DO_NOT_SHARE_ON_DUPLICATE), "set_tree_root", "get_tree_root");
 	ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "anim_player", PROPERTY_HINT_NODE_PATH_VALID_TYPES, "AnimationPlayer"), "set_animation_player", "get_animation_player");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "active"), "set_active", "is_active");
-	ADD_PROPERTY(PropertyInfo(Variant::INT, "process_mode", PROPERTY_HINT_ENUM, "Physics,Idle"), "set_process_mode", "get_process_mode");
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "process_mode", PROPERTY_HINT_ENUM, "Physics,Idle,Manual"), "set_process_mode", "get_process_mode");
 	ADD_GROUP("Root Motion", "root_motion_");
 	ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "root_motion_track"), "set_root_motion_track", "get_root_motion_track");
 
 	BIND_ENUM_CONSTANT(ANIMATION_PROCESS_PHYSICS);
 	BIND_ENUM_CONSTANT(ANIMATION_PROCESS_IDLE);
+	BIND_ENUM_CONSTANT(ANIMATION_PROCESS_MANUAL);
 }
 
 AnimationTree::AnimationTree() {

scene/animation/animation_tree.h

@@ -133,6 +133,7 @@ public:
 	enum AnimationProcessMode {
 		ANIMATION_PROCESS_PHYSICS,
 		ANIMATION_PROCESS_IDLE,
+		ANIMATION_PROCESS_MANUAL,
 	};
 
 private:
@@ -271,6 +272,8 @@ public:
 
 	Transform get_root_motion_transform() const;
 
+	void advance(float p_time);
+
 	uint64_t get_last_process_pass() const;
 	AnimationTree();
 	~AnimationTree();