path: root/doc/classes/Skeleton3D.xml

<?xml version="1.0" encoding="UTF-8" ?>
<class name="Skeleton3D" inherits="Node3D" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
	<brief_description>
		Skeleton for characters and animated objects.
	</brief_description>
	<description>
		Skeleton3D provides a hierarchical interface for managing bones, including pose, rest and animation (see [Animation]). It can also use ragdoll physics.
		The overall transform of a bone with respect to the skeleton is determined by the following hierarchical order: rest pose, custom pose and pose.
		Note that "global pose" below refers to the overall transform of the bone with respect to skeleton, so it not the actual global/world transform of the bone.
	</description>
	<tutorials>
		<link title="3D Inverse Kinematics Demo">https://godotengine.org/asset-library/asset/523</link>
		<link title="Third Person Shooter Demo">https://godotengine.org/asset-library/asset/678</link>
	</tutorials>
	<methods>
		<method name="add_bone">
			<return type="void" />
			<param index="0" name="name" type="String" />
			<description>
				Adds a bone, with name [param name]. [method get_bone_count] will become the bone index.
			</description>
		</method>
		<method name="add_bone_child">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="child_bone_idx" type="int" />
			<description>
				Takes the given bone pose/transform and converts it to a world transform, relative to the [Skeleton3D] node.
				This is useful for using the bone transform in calculations with transforms from [Node3D]-based nodes.
			</description>
		</method>
		<method name="clear_bones">
			<return type="void" />
			<description>
				Clear all the bones in this skeleton.
			</description>
		</method>
		<method name="clear_bones_global_pose_override">
			<return type="void" />
			<description>
				Removes the global pose override on all bones in the skeleton.
			</description>
		</method>
		<method name="clear_bones_local_pose_override">
			<return type="void" />
			<description>
				Removes the local pose override on all bones in the skeleton.
			</description>
		</method>
		<method name="create_skin_from_rest_transforms">
			<return type="Skin" />
			<description>
			</description>
		</method>
		<method name="execute_modifications">
			<return type="void" />
			<param index="0" name="delta" type="float" />
			<param index="1" name="execution_mode" type="int" />
			<description>
				Executes all the modifications on the [SkeletonModificationStack3D], if the Skeleton3D has one assigned.
			</description>
		</method>
		<method name="find_bone" qualifiers="const">
			<return type="int" />
			<param index="0" name="name" type="String" />
			<description>
				Returns the bone index that matches [param name] as its name.
			</description>
		</method>
		<method name="force_update_all_bone_transforms">
			<return type="void" />
			<description>
				Force updates the bone transforms/poses for all bones in the skeleton.
			</description>
		</method>
		<method name="force_update_bone_child_transform">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Force updates the bone transform for the bone at [param bone_idx] and all of its children.
			</description>
		</method>
		<method name="get_bone_children">
			<return type="PackedInt32Array" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Returns an array containing the bone indexes of all the children node of the passed in bone, [param bone_idx].
			</description>
		</method>
		<method name="get_bone_count" qualifiers="const">
			<return type="int" />
			<description>
				Returns the number of bones in the skeleton.
			</description>
		</method>
		<method name="get_bone_global_pose" qualifiers="const">
			<return type="Transform3D" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Returns the overall transform of the specified bone, with respect to the skeleton. Being relative to the skeleton frame, this is not the actual "global" transform of the bone.
			</description>
		</method>
		<method name="get_bone_global_pose_no_override" qualifiers="const">
			<return type="Transform3D" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Returns the overall transform of the specified bone, with respect to the skeleton, but without any global pose overrides. Being relative to the skeleton frame, this is not the actual "global" transform of the bone.
			</description>
		</method>
		<method name="get_bone_global_pose_override" qualifiers="const">
			<return type="Transform3D" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Returns the global pose override transform for [param bone_idx].
			</description>
		</method>
		<method name="get_bone_global_rest" qualifiers="const">
			<return type="Transform3D" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Returns the global rest transform for [param bone_idx].
			</description>
		</method>
		<method name="get_bone_local_pose_override" qualifiers="const">
			<return type="Transform3D" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Returns the local pose override transform for [param bone_idx].
			</description>
		</method>
		<method name="get_bone_name" qualifiers="const">
			<return type="String" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Returns the name of the bone at index [param bone_idx].
			</description>
		</method>
		<method name="get_bone_parent" qualifiers="const">
			<return type="int" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Returns the bone index which is the parent of the bone at [param bone_idx]. If -1, then bone has no parent.
				[b]Note:[/b] The parent bone returned will always be less than [param bone_idx].
			</description>
		</method>
		<method name="get_bone_pose" qualifiers="const">
			<return type="Transform3D" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Returns the pose transform of the specified bone. Pose is applied on top of the custom pose, which is applied on top the rest pose.
			</description>
		</method>
		<method name="get_bone_pose_position" qualifiers="const">
			<return type="Vector3" />
			<param index="0" name="bone_idx" type="int" />
			<description>
			</description>
		</method>
		<method name="get_bone_pose_rotation" qualifiers="const">
			<return type="Quaternion" />
			<param index="0" name="bone_idx" type="int" />
			<description>
			</description>
		</method>
		<method name="get_bone_pose_scale" qualifiers="const">
			<return type="Vector3" />
			<param index="0" name="bone_idx" type="int" />
			<description>
			</description>
		</method>
		<method name="get_bone_rest" qualifiers="const">
			<return type="Transform3D" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Returns the rest transform for a bone [param bone_idx].
			</description>
		</method>
		<method name="get_modification_stack">
			<return type="SkeletonModificationStack3D" />
			<description>
				Returns the modification stack attached to this skeleton, if one exists.
			</description>
		</method>
		<method name="get_parentless_bones">
			<return type="PackedInt32Array" />
			<description>
				Returns an array with all of the bones that are parentless. Another way to look at this is that it returns the indexes of all the bones that are not dependent or modified by other bones in the Skeleton.
			</description>
		</method>
		<method name="global_pose_to_local_pose">
			<return type="Transform3D" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="global_pose" type="Transform3D" />
			<description>
				Takes the passed-in global pose and converts it to local pose transform.
				This can be used to easily convert a global pose from [method get_bone_global_pose] to a global transform in [method set_bone_local_pose_override].
			</description>
		</method>
		<method name="global_pose_to_world_transform">
			<return type="Transform3D" />
			<param index="0" name="global_pose" type="Transform3D" />
			<description>
				Takes the passed-in global pose and converts it to a world transform.
				This can be used to easily convert a global pose from [method get_bone_global_pose] to a global transform usable with a node's transform, like [member Node3D.global_transform] for example.
			</description>
		</method>
		<method name="global_pose_z_forward_to_bone_forward">
			<return type="Basis" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="basis" type="Basis" />
			<description>
				Rotates the given [Basis] so that the forward axis of the Basis is facing in the forward direction of the bone at [param bone_idx].
				This is helper function to make using [method Transform3D.looking_at] easier with bone poses.
			</description>
		</method>
		<method name="is_bone_enabled" qualifiers="const">
			<return type="bool" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Returns whether the bone pose for the bone at [param bone_idx] is enabled.
			</description>
		</method>
		<method name="local_pose_to_global_pose">
			<return type="Transform3D" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="local_pose" type="Transform3D" />
			<description>
				Converts the passed-in local pose to a global pose relative to the inputted bone, [param bone_idx].
				This could be used to convert [method get_bone_pose] for use with the [method set_bone_global_pose_override] function.
			</description>
		</method>
		<method name="localize_rests">
			<return type="void" />
			<description>
				Returns all bones in the skeleton to their rest poses.
			</description>
		</method>
		<method name="physical_bones_add_collision_exception">
			<return type="void" />
			<param index="0" name="exception" type="RID" />
			<description>
				Adds a collision exception to the physical bone.
				Works just like the [RigidDynamicBody3D] node.
			</description>
		</method>
		<method name="physical_bones_remove_collision_exception">
			<return type="void" />
			<param index="0" name="exception" type="RID" />
			<description>
				Removes a collision exception to the physical bone.
				Works just like the [RigidDynamicBody3D] node.
			</description>
		</method>
		<method name="physical_bones_start_simulation">
			<return type="void" />
			<param index="0" name="bones" type="StringName[]" default="[]" />
			<description>
				Tells the [PhysicalBone3D] nodes in the Skeleton to start simulating and reacting to the physics world.
				Optionally, a list of bone names can be passed-in, allowing only the passed-in bones to be simulated.
			</description>
		</method>
		<method name="physical_bones_stop_simulation">
			<return type="void" />
			<description>
				Tells the [PhysicalBone3D] nodes in the Skeleton to stop simulating.
			</description>
		</method>
		<method name="register_skin">
			<return type="SkinReference" />
			<param index="0" name="skin" type="Skin" />
			<description>
				Binds the given Skin to the Skeleton.
			</description>
		</method>
		<method name="remove_bone_child">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="child_bone_idx" type="int" />
			<description>
				Removes the passed in child bone index, [param child_bone_idx], from the passed-in bone, [param bone_idx], if it exists.
				[b]Note:[/b] This does not remove the child bone, but instead it removes the connection it has to the parent bone.
			</description>
		</method>
		<method name="set_bone_children">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="bone_children" type="PackedInt32Array" />
			<description>
				Sets the children for the passed in bone, [param bone_idx], to the passed-in array of bone indexes, [param bone_children].
			</description>
		</method>
		<method name="set_bone_enabled">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="enabled" type="bool" default="true" />
			<description>
				Disables the pose for the bone at [param bone_idx] if [code]false[/code], enables the bone pose if [code]true[/code].
			</description>
		</method>
		<method name="set_bone_global_pose_override">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="pose" type="Transform3D" />
			<param index="2" name="amount" type="float" />
			<param index="3" name="persistent" type="bool" default="false" />
			<description>
				Sets the global pose transform, [param pose], for the bone at [param bone_idx].
				[param amount] is the interpolation strength that will be used when applying the pose, and [param persistent] determines if the applied pose will remain.
				[b]Note:[/b] The pose transform needs to be a global pose! Use [method world_transform_to_global_pose] to convert a world transform, like one you can get from a [Node3D], to a global pose.
			</description>
		</method>
		<method name="set_bone_local_pose_override">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="pose" type="Transform3D" />
			<param index="2" name="amount" type="float" />
			<param index="3" name="persistent" type="bool" default="false" />
			<description>
				Sets the local pose transform, [param pose], for the bone at [param bone_idx].
				[param amount] is the interpolation strength that will be used when applying the pose, and [param persistent] determines if the applied pose will remain.
				[b]Note:[/b] The pose transform needs to be a local pose! Use [method global_pose_to_local_pose] to convert a global pose to a local pose.
			</description>
		</method>
		<method name="set_bone_name">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="name" type="String" />
			<description>
			</description>
		</method>
		<method name="set_bone_parent">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="parent_idx" type="int" />
			<description>
				Sets the bone index [param parent_idx] as the parent of the bone at [param bone_idx]. If -1, then bone has no parent.
				[b]Note:[/b] [param parent_idx] must be less than [param bone_idx].
			</description>
		</method>
		<method name="set_bone_pose_position">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="position" type="Vector3" />
			<description>
			</description>
		</method>
		<method name="set_bone_pose_rotation">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="rotation" type="Quaternion" />
			<description>
			</description>
		</method>
		<method name="set_bone_pose_scale">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="scale" type="Vector3" />
			<description>
			</description>
		</method>
		<method name="set_bone_rest">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<param index="1" name="rest" type="Transform3D" />
			<description>
				Sets the rest transform for bone [param bone_idx].
			</description>
		</method>
		<method name="set_modification_stack">
			<return type="void" />
			<param index="0" name="modification_stack" type="SkeletonModificationStack3D" />
			<description>
				Sets the modification stack for this skeleton to the passed-in modification stack, [param modification_stack].
			</description>
		</method>
		<method name="unparent_bone_and_rest">
			<return type="void" />
			<param index="0" name="bone_idx" type="int" />
			<description>
				Unparents the bone at [param bone_idx] and sets its rest position to that of its parent prior to being reset.
			</description>
		</method>
		<method name="world_transform_to_global_pose">
			<return type="Transform3D" />
			<param index="0" name="world_transform" type="Transform3D" />
			<description>
				Takes the passed-in global transform and converts it to a global pose.
				This can be used to easily convert a global transform from [member Node3D.global_transform] to a global pose usable with [method set_bone_global_pose_override], for example.
			</description>
		</method>
	</methods>
	<members>
		<member name="animate_physical_bones" type="bool" setter="set_animate_physical_bones" getter="get_animate_physical_bones" default="true">
		</member>
		<member name="motion_scale" type="float" setter="set_motion_scale" getter="get_motion_scale" default="1.0">
			Multiplies the position 3D track animation.
			[b]Note:[/b] Unless this value is [code]1.0[/code], the key value in animation will not match the actual position value.
		</member>
		<member name="show_rest_only" type="bool" setter="set_show_rest_only" getter="is_show_rest_only" default="false">
		</member>
	</members>
	<signals>
		<signal name="bone_enabled_changed">
			<param index="0" name="bone_idx" type="int" />
			<description>
			</description>
		</signal>
		<signal name="bone_pose_changed">
			<param index="0" name="bone_idx" type="int" />
			<description>
				This signal is emitted when one of the bones in the Skeleton3D node have changed their pose. This is used to inform nodes that rely on bone positions that one of the bones in the Skeleton3D have changed their transform/pose.
			</description>
		</signal>
		<signal name="pose_updated">
			<description>
			</description>
		</signal>
		<signal name="show_rest_only_changed">
			<description>
			</description>
		</signal>
	</signals>
	<constants>
		<constant name="NOTIFICATION_UPDATE_SKELETON" value="50">
		</constant>
	</constants>
</class>