virtualx-engine/doc/classes/CPUParticles.xml

<?xml version="1.0" encoding="UTF-8" ?>
<class name="CPUParticles" inherits="GeometryInstance" category="Core" version="3.2">
	<brief_description>
		CPU-based 3D particle emitter.
	</brief_description>
	<description>
		CPU-based 3D particle node used to create a variety of particle systems and effects.
		See also [Particles], which provides the same functionality with hardware acceleration, but may not run on older devices.
	</description>
	<tutorials>
	</tutorials>
	<methods>
		<method name="convert_from_particles">
			<return type="void">
			</return>
			<argument index="0" name="particles" type="Node">
			</argument>
			<description>
				Sets this node's properties to match a given [Particles] node with an assigned [ParticlesMaterial].
			</description>
		</method>
		<method name="restart">
			<return type="void">
			</return>
			<description>
				Restarts the particle emitter.
			</description>
		</method>
	</methods>
	<members>
		<member name="amount" type="int" setter="set_amount" getter="get_amount">
			Number of particles emitted in one emission cycle.
		</member>
		<member name="angle" type="float" setter="set_param" getter="get_param">
			Initial rotation applied to each particle, in degrees.
		</member>
		<member name="angle_curve" type="Curve" setter="set_param_curve" getter="get_param_curve">
			Each particle's rotation will be animated along this [Curve].
		</member>
		<member name="angle_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Rotation randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="angular_velocity" type="float" setter="set_param" getter="get_param">
			Initial angular velocity applied to each particle. Sets the speed of rotation of the particle.
		</member>
		<member name="angular_velocity_curve" type="Curve" setter="set_param_curve" getter="get_param_curve">
			Each particle's angular velocity will vary along this [Curve].
		</member>
		<member name="angular_velocity_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Angular velocity randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="anim_offset" type="float" setter="set_param" getter="get_param">
			Particle animation offset.
		</member>
		<member name="anim_offset_curve" type="Curve" setter="set_param_curve" getter="get_param_curve">
			Each particle's animation offset will vary along this [Curve].
		</member>
		<member name="anim_offset_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Animation offset randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="anim_speed" type="float" setter="set_param" getter="get_param">
			Particle animation speed.
		</member>
		<member name="anim_speed_curve" type="Curve" setter="set_param_curve" getter="get_param_curve">
			Each particle's animation speed will vary along this [Curve].
		</member>
		<member name="anim_speed_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Animation speed randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="color" type="Color" setter="set_color" getter="get_color">
			Unused for 3D particles.
		</member>
		<member name="color_ramp" type="Gradient" setter="set_color_ramp" getter="get_color_ramp">
			Unused for 3D particles.
		</member>
		<member name="damping" type="float" setter="set_param" getter="get_param">
			The rate at which particles lose velocity.
		</member>
		<member name="damping_curve" type="Curve" setter="set_param_curve" getter="get_param_curve">
			Damping will vary along this [Curve].
		</member>
		<member name="damping_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Damping randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="draw_order" type="int" setter="set_draw_order" getter="get_draw_order" enum="CPUParticles.DrawOrder">
			Particle draw order. Uses [enum DrawOrder] values. Default value: [constant DRAW_ORDER_INDEX].
		</member>
		<member name="emission_box_extents" type="Vector3" setter="set_emission_box_extents" getter="get_emission_box_extents">
			The rectangle's extents if [member emission_shape] is set to [constant EMISSION_SHAPE_BOX].
		</member>
		<member name="emission_colors" type="PoolColorArray" setter="set_emission_colors" getter="get_emission_colors">
		</member>
		<member name="emission_normals" type="PoolVector3Array" setter="set_emission_normals" getter="get_emission_normals">
		</member>
		<member name="emission_points" type="PoolVector3Array" setter="set_emission_points" getter="get_emission_points">
		</member>
		<member name="emission_shape" type="int" setter="set_emission_shape" getter="get_emission_shape" enum="CPUParticles.EmissionShape">
			Particles will be emitted inside this region. Use [enum EmissionShape] for values. Default value: [constant EMISSION_SHAPE_POINT].
		</member>
		<member name="emission_sphere_radius" type="float" setter="set_emission_sphere_radius" getter="get_emission_sphere_radius">
			The sphere's radius if [enum EmissionShape] is set to [constant EMISSION_SHAPE_SPHERE].
		</member>
		<member name="emitting" type="bool" setter="set_emitting" getter="is_emitting">
			If [code]true[/code], particles are being emitted. Default value: [code]true[/code].
		</member>
		<member name="explosiveness" type="float" setter="set_explosiveness_ratio" getter="get_explosiveness_ratio">
			How rapidly particles in an emission cycle are emitted. If greater than [code]0[/code], there will be a gap in emissions before the next cycle begins. Default value: [code]0[/code].
		</member>
		<member name="fixed_fps" type="int" setter="set_fixed_fps" getter="get_fixed_fps">
			The particle system's frame rate is fixed to a value. For instance, changing the value to 2 will make the particles render at 2 frames per second. Note this does not slow down the particle system itself.
		</member>
		<member name="flag_align_y" type="bool" setter="set_particle_flag" getter="get_particle_flag">
			Align y-axis of particle with the direction of its velocity.
		</member>
		<member name="flag_disable_z" type="bool" setter="set_particle_flag" getter="get_particle_flag">
			If [code]true[/code], particles will not move on the z axis. Default value: [code]false[/code].
		</member>
		<member name="flag_rotate_y" type="bool" setter="set_particle_flag" getter="get_particle_flag">
			If [code]true[/code], particles rotate around y-axis by [member angle].
		</member>
		<member name="flatness" type="float" setter="set_flatness" getter="get_flatness">
			Amount of [member spread] in Y/Z plane. A value of [code]1[/code] restricts particles to X/Z plane. Default [code]0[/code].
		</member>
		<member name="fract_delta" type="bool" setter="set_fractional_delta" getter="get_fractional_delta">
			If [code]true[/code], results in fractional delta calculation which has a smoother particles display effect. Default value: [code]true[/code]
		</member>
		<member name="gravity" type="Vector3" setter="set_gravity" getter="get_gravity">
			Gravity applied to every particle. Default value: [code](0, -9.8, 0)[/code].
		</member>
		<member name="hue_variation" type="float" setter="set_param" getter="get_param">
			Initial hue variation applied to each particle.
		</member>
		<member name="hue_variation_curve" type="Curve" setter="set_param_curve" getter="get_param_curve">
			Each particle's hue will vary along this [Curve].
		</member>
		<member name="hue_variation_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Hue variation randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="initial_velocity" type="float" setter="set_param" getter="get_param">
			Initial velocity magnitude for each particle. Direction comes from [member spread] and the node's orientation.
		</member>
		<member name="initial_velocity_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Initial velocity randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="lifetime" type="float" setter="set_lifetime" getter="get_lifetime">
			Amount of time each particle will exist. Default value: [code]1[/code].
		</member>
		<member name="linear_accel" type="float" setter="set_param" getter="get_param">
			Linear acceleration applied to each particle in the direction of motion.
		</member>
		<member name="linear_accel_curve" type="Curve" setter="set_param_curve" getter="get_param_curve">
			Each particle's linear acceleration will vary along this [Curve].
		</member>
		<member name="linear_accel_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Linear acceleration randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="local_coords" type="bool" setter="set_use_local_coordinates" getter="get_use_local_coordinates">
			If [code]true[/code], particles use the parent node's coordinate space. If [code]false[/code], they use global coordinates. Default value: [code]true[/code].
		</member>
		<member name="mesh" type="Mesh" setter="set_mesh" getter="get_mesh">
			The [Mesh] used for each particle. If [code]null[/code], particles will be spheres.
		</member>
		<member name="one_shot" type="bool" setter="set_one_shot" getter="get_one_shot">
			If [code]true[/code], only one emission cycle occurs. If set [code]true[/code] during a cycle, emission will stop at the cycle's end. Default value: [code]false[/code].
		</member>
		<member name="orbit_velocity" type="float" setter="set_param" getter="get_param">
			Orbital velocity applied to each particle. Makes the particles circle around origin in the local XY plane. Specified in number of full rotations around origin per second.
			This property is only available when [member flag_disable_z] is [code]true[/code].
		</member>
		<member name="orbit_velocity_curve" type="Curve" setter="set_param_curve" getter="get_param_curve">
			Each particle's orbital velocity will vary along this [Curve].
		</member>
		<member name="orbit_velocity_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Orbital velocity randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="preprocess" type="float" setter="set_pre_process_time" getter="get_pre_process_time">
			Particle system starts as if it had already run for this many seconds.
		</member>
		<member name="radial_accel" type="float" setter="set_param" getter="get_param">
			Radial acceleration applied to each particle. Makes particle accelerate away from origin.
		</member>
		<member name="radial_accel_curve" type="Curve" setter="set_param_curve" getter="get_param_curve">
			Each particle's radial acceleration will vary along this [Curve].
		</member>
		<member name="radial_accel_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Radial acceleration randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="randomness" type="float" setter="set_randomness_ratio" getter="get_randomness_ratio">
			Emission lifetime randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="scale_amount" type="float" setter="set_param" getter="get_param">
			Initial scale applied to each particle.
		</member>
		<member name="scale_amount_curve" type="Curve" setter="set_param_curve" getter="get_param_curve">
			Each particle's scale will vary along this [Curve].
		</member>
		<member name="scale_amount_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Scale randomness ratio. Default value: [code]0[/code].
		</member>
		<member name="speed_scale" type="float" setter="set_speed_scale" getter="get_speed_scale">
			Particle system's running speed scaling ratio. Default value: [code]1[/code]. A value of [code]0[/code] can be used to pause the particles.
		</member>
		<member name="spread" type="float" setter="set_spread" getter="get_spread">
			Each particle's initial direction range from [code]+spread[/code] to [code]-spread[/code] degrees. Default value: [code]45[/code].
		</member>
		<member name="tangential_accel" type="float" setter="set_param" getter="get_param">
			Tangential acceleration applied to each particle. Tangential acceleration is perpendicular to the particle's velocity giving the particles a swirling motion.
		</member>
		<member name="tangential_accel_curve" type="Curve" setter="set_param_curve" getter="get_param_curve">
			Each particle's tangential acceleration will vary along this [Curve].
		</member>
		<member name="tangential_accel_random" type="float" setter="set_param_randomness" getter="get_param_randomness">
			Tangential acceleration randomness ratio. Default value: [code]0[/code].
		</member>
	</members>
	<constants>
		<constant name="DRAW_ORDER_INDEX" value="0" enum="DrawOrder">
			Particles are drawn in the order emitted.
		</constant>
		<constant name="DRAW_ORDER_LIFETIME" value="1" enum="DrawOrder">
			Particles are drawn in order of remaining lifetime.
		</constant>
		<constant name="DRAW_ORDER_VIEW_DEPTH" value="2" enum="DrawOrder">
			Particles are drawn in order of depth.
		</constant>
		<constant name="PARAM_INITIAL_LINEAR_VELOCITY" value="0" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set initial velocity properties.
		</constant>
		<constant name="PARAM_ANGULAR_VELOCITY" value="1" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set angular velocity properties.
		</constant>
		<constant name="PARAM_ORBIT_VELOCITY" value="2" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set orbital velocity properties.
		</constant>
		<constant name="PARAM_LINEAR_ACCEL" value="3" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set linear acceleration properties.
		</constant>
		<constant name="PARAM_RADIAL_ACCEL" value="4" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set radial acceleration properties.
		</constant>
		<constant name="PARAM_TANGENTIAL_ACCEL" value="5" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set tangential acceleration properties.
		</constant>
		<constant name="PARAM_DAMPING" value="6" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set damping properties.
		</constant>
		<constant name="PARAM_ANGLE" value="7" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set angle properties.
		</constant>
		<constant name="PARAM_SCALE" value="8" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set scale properties.
		</constant>
		<constant name="PARAM_HUE_VARIATION" value="9" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set hue variation properties.
		</constant>
		<constant name="PARAM_ANIM_SPEED" value="10" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set animation speed properties.
		</constant>
		<constant name="PARAM_ANIM_OFFSET" value="11" enum="Parameter">
			Use with [method set_param], [method set_param_randomness], and [method set_param_texture] to set animation offset properties.
		</constant>
		<constant name="PARAM_MAX" value="12" enum="Parameter">
			Represents the size of the [enum Parameter] enum.
		</constant>
		<constant name="FLAG_ALIGN_Y_TO_VELOCITY" value="0" enum="Flags">
			Use with [method set_flag] to set [member flag_align_y].
		</constant>
		<constant name="FLAG_ROTATE_Y" value="1" enum="Flags">
			Use with [method set_flag] to set [member flag_rotate_y].
		</constant>
		<constant name="FLAG_DISABLE_Z" value="2" enum="Flags">
			Use with [method set_flag] to set [member flag_disable_z].
		</constant>
		<constant name="FLAG_MAX" value="3" enum="Flags">
			Represents the size of the [enum Flags] enum.
		</constant>
		<constant name="EMISSION_SHAPE_POINT" value="0" enum="EmissionShape">
			All particles will be emitted from a single point.
		</constant>
		<constant name="EMISSION_SHAPE_SPHERE" value="1" enum="EmissionShape">
			Particles will be emitted in the volume of a sphere.
		</constant>
		<constant name="EMISSION_SHAPE_BOX" value="2" enum="EmissionShape">
			Particles will be emitted in the volume of a box.
		</constant>
		<constant name="EMISSION_SHAPE_POINTS" value="3" enum="EmissionShape">
			Particles will be emitted at a position chosen randomly among [member emission_points]. Particle color will be modulated by [member emission_colors].
		</constant>
		<constant name="EMISSION_SHAPE_DIRECTED_POINTS" value="4" enum="EmissionShape">
			Particles will be emitted at a position chosen randomly among [member emission_points]. Particle velocity and rotation will be set based on [member emission_normals]. Particle color will be modulated by [member emission_colors].
		</constant>
	</constants>
</class>