:github_url: hide .. DO NOT EDIT THIS FILE!!! .. Generated automatically from Godot engine sources. .. Generator: https://github.com/godotengine/godot/tree/3.6/doc/tools/make_rst.py. .. XML source: https://github.com/godotengine/godot/tree/3.6/doc/classes/CPUParticles2D.xml. .. _class_CPUParticles2D: CPUParticles2D ============== **Inherits:** :ref:`Node2D` **<** :ref:`CanvasItem` **<** :ref:`Node` **<** :ref:`Object` CPU-based 2D particle emitter. .. rst-class:: classref-introduction-group Description ----------- CPU-based 2D particle node used to create a variety of particle systems and effects. See also :ref:`Particles2D`, which provides the same functionality with hardware acceleration, but may not run on older devices. \ **Note:** Unlike :ref:`Particles2D`, the visibility rect is generated on-the-fly and doesn't need to be configured by the user. .. rst-class:: classref-introduction-group Tutorials --------- - :doc:`../tutorials/2d/particle_systems_2d` .. rst-class:: classref-reftable-group Properties ---------- .. table:: :widths: auto +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`int` | :ref:`amount` | ``8`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`angle` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`angle_curve` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`angle_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`angular_velocity` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`angular_velocity_curve` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`angular_velocity_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`anim_offset` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`anim_offset_curve` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`anim_offset_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`anim_speed` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`anim_speed_curve` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`anim_speed_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Color` | :ref:`color` | ``Color( 1, 1, 1, 1 )`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Gradient` | :ref:`color_initial_ramp` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Gradient` | :ref:`color_ramp` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`damping` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`damping_curve` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`damping_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Vector2` | :ref:`direction` | ``Vector2( 1, 0 )`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`DrawOrder` | :ref:`draw_order` | ``0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`PoolColorArray` | :ref:`emission_colors` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`PoolVector2Array` | :ref:`emission_normals` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`PoolVector2Array` | :ref:`emission_points` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Vector2` | :ref:`emission_rect_extents` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`EmissionShape` | :ref:`emission_shape` | ``0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`emission_sphere_radius` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`bool` | :ref:`emitting` | ``true`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`explosiveness` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`int` | :ref:`fixed_fps` | ``0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`bool` | :ref:`flag_align_y` | ``false`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`bool` | :ref:`fract_delta` | ``true`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Vector2` | :ref:`gravity` | ``Vector2( 0, 98 )`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`hue_variation` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`hue_variation_curve` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`hue_variation_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`initial_velocity` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`initial_velocity_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`lifetime` | ``1.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`lifetime_randomness` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`linear_accel` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`linear_accel_curve` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`linear_accel_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`bool` | :ref:`local_coords` | ``true`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Texture` | :ref:`normalmap` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`bool` | :ref:`one_shot` | ``false`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`orbit_velocity` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`orbit_velocity_curve` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`orbit_velocity_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`PhysicsInterpolationMode` | physics_interpolation_mode | ``1`` (overrides :ref:`Node`) | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`preprocess` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`radial_accel` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`radial_accel_curve` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`radial_accel_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`randomness` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`scale_amount` | ``1.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`scale_amount_curve` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`scale_amount_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`speed_scale` | ``1.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`spread` | ``45.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`tangential_accel` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`tangential_accel_curve` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`float` | :ref:`tangential_accel_random` | ``0.0`` | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ | :ref:`Texture` | :ref:`texture` | | +---------------------------------------------------------------------+---------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+ .. rst-class:: classref-reftable-group Methods ------- .. table:: :widths: auto +---------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | void | :ref:`convert_from_particles` **(** :ref:`Node` particles **)** | +---------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | :ref:`float` | :ref:`get_param` **(** :ref:`Parameter` param **)** |const| | +---------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | :ref:`Curve` | :ref:`get_param_curve` **(** :ref:`Parameter` param **)** |const| | +---------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | :ref:`float` | :ref:`get_param_randomness` **(** :ref:`Parameter` param **)** |const| | +---------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | :ref:`bool` | :ref:`get_particle_flag` **(** :ref:`Flags` flag **)** |const| | +---------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | void | :ref:`restart` **(** **)** | +---------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | void | :ref:`set_param` **(** :ref:`Parameter` param, :ref:`float` value **)** | +---------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | void | :ref:`set_param_curve` **(** :ref:`Parameter` param, :ref:`Curve` curve **)** | +---------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | void | :ref:`set_param_randomness` **(** :ref:`Parameter` param, :ref:`float` randomness **)** | +---------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | void | :ref:`set_particle_flag` **(** :ref:`Flags` flag, :ref:`bool` enable **)** | +---------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ .. rst-class:: classref-section-separator ---- .. rst-class:: classref-descriptions-group Enumerations ------------ .. _enum_CPUParticles2D_DrawOrder: .. rst-class:: classref-enumeration enum **DrawOrder**: .. _class_CPUParticles2D_constant_DRAW_ORDER_INDEX: .. rst-class:: classref-enumeration-constant :ref:`DrawOrder` **DRAW_ORDER_INDEX** = ``0`` Particles are drawn in the order emitted. .. _class_CPUParticles2D_constant_DRAW_ORDER_LIFETIME: .. rst-class:: classref-enumeration-constant :ref:`DrawOrder` **DRAW_ORDER_LIFETIME** = ``1`` Particles are drawn in order of remaining lifetime. .. rst-class:: classref-item-separator ---- .. _enum_CPUParticles2D_Parameter: .. rst-class:: classref-enumeration enum **Parameter**: .. _class_CPUParticles2D_constant_PARAM_INITIAL_LINEAR_VELOCITY: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_INITIAL_LINEAR_VELOCITY** = ``0`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set initial velocity properties. .. _class_CPUParticles2D_constant_PARAM_ANGULAR_VELOCITY: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_ANGULAR_VELOCITY** = ``1`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set angular velocity properties. .. _class_CPUParticles2D_constant_PARAM_ORBIT_VELOCITY: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_ORBIT_VELOCITY** = ``2`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set orbital velocity properties. .. _class_CPUParticles2D_constant_PARAM_LINEAR_ACCEL: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_LINEAR_ACCEL** = ``3`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set linear acceleration properties. .. _class_CPUParticles2D_constant_PARAM_RADIAL_ACCEL: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_RADIAL_ACCEL** = ``4`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set radial acceleration properties. .. _class_CPUParticles2D_constant_PARAM_TANGENTIAL_ACCEL: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_TANGENTIAL_ACCEL** = ``5`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set tangential acceleration properties. .. _class_CPUParticles2D_constant_PARAM_DAMPING: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_DAMPING** = ``6`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set damping properties. .. _class_CPUParticles2D_constant_PARAM_ANGLE: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_ANGLE** = ``7`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set angle properties. .. _class_CPUParticles2D_constant_PARAM_SCALE: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_SCALE** = ``8`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set scale properties. .. _class_CPUParticles2D_constant_PARAM_HUE_VARIATION: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_HUE_VARIATION** = ``9`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set hue variation properties. .. _class_CPUParticles2D_constant_PARAM_ANIM_SPEED: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_ANIM_SPEED** = ``10`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set animation speed properties. .. _class_CPUParticles2D_constant_PARAM_ANIM_OFFSET: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_ANIM_OFFSET** = ``11`` Use with :ref:`set_param`, :ref:`set_param_randomness`, and :ref:`set_param_curve` to set animation offset properties. .. _class_CPUParticles2D_constant_PARAM_MAX: .. rst-class:: classref-enumeration-constant :ref:`Parameter` **PARAM_MAX** = ``12`` Represents the size of the :ref:`Parameter` enum. .. rst-class:: classref-item-separator ---- .. _enum_CPUParticles2D_Flags: .. rst-class:: classref-enumeration enum **Flags**: .. _class_CPUParticles2D_constant_FLAG_ALIGN_Y_TO_VELOCITY: .. rst-class:: classref-enumeration-constant :ref:`Flags` **FLAG_ALIGN_Y_TO_VELOCITY** = ``0`` Use with :ref:`set_particle_flag` to set :ref:`flag_align_y`. .. _class_CPUParticles2D_constant_FLAG_ROTATE_Y: .. rst-class:: classref-enumeration-constant :ref:`Flags` **FLAG_ROTATE_Y** = ``1`` Present for consistency with 3D particle nodes, not used in 2D. .. _class_CPUParticles2D_constant_FLAG_DISABLE_Z: .. rst-class:: classref-enumeration-constant :ref:`Flags` **FLAG_DISABLE_Z** = ``2`` Present for consistency with 3D particle nodes, not used in 2D. .. _class_CPUParticles2D_constant_FLAG_MAX: .. rst-class:: classref-enumeration-constant :ref:`Flags` **FLAG_MAX** = ``3`` Represents the size of the :ref:`Flags` enum. .. rst-class:: classref-item-separator ---- .. _enum_CPUParticles2D_EmissionShape: .. rst-class:: classref-enumeration enum **EmissionShape**: .. _class_CPUParticles2D_constant_EMISSION_SHAPE_POINT: .. rst-class:: classref-enumeration-constant :ref:`EmissionShape` **EMISSION_SHAPE_POINT** = ``0`` All particles will be emitted from a single point. .. _class_CPUParticles2D_constant_EMISSION_SHAPE_SPHERE: .. rst-class:: classref-enumeration-constant :ref:`EmissionShape` **EMISSION_SHAPE_SPHERE** = ``1`` Particles will be emitted on the surface of a sphere flattened to two dimensions. .. _class_CPUParticles2D_constant_EMISSION_SHAPE_RECTANGLE: .. rst-class:: classref-enumeration-constant :ref:`EmissionShape` **EMISSION_SHAPE_RECTANGLE** = ``2`` Particles will be emitted in the area of a rectangle. .. _class_CPUParticles2D_constant_EMISSION_SHAPE_POINTS: .. rst-class:: classref-enumeration-constant :ref:`EmissionShape` **EMISSION_SHAPE_POINTS** = ``3`` Particles will be emitted at a position chosen randomly among :ref:`emission_points`. Particle color will be modulated by :ref:`emission_colors`. .. _class_CPUParticles2D_constant_EMISSION_SHAPE_DIRECTED_POINTS: .. rst-class:: classref-enumeration-constant :ref:`EmissionShape` **EMISSION_SHAPE_DIRECTED_POINTS** = ``4`` Particles will be emitted at a position chosen randomly among :ref:`emission_points`. Particle velocity and rotation will be set based on :ref:`emission_normals`. Particle color will be modulated by :ref:`emission_colors`. .. _class_CPUParticles2D_constant_EMISSION_SHAPE_MAX: .. rst-class:: classref-enumeration-constant :ref:`EmissionShape` **EMISSION_SHAPE_MAX** = ``5`` Represents the size of the :ref:`EmissionShape` enum. .. rst-class:: classref-section-separator ---- .. rst-class:: classref-descriptions-group Property Descriptions --------------------- .. _class_CPUParticles2D_property_amount: .. rst-class:: classref-property :ref:`int` **amount** = ``8`` .. rst-class:: classref-property-setget - void **set_amount** **(** :ref:`int` value **)** - :ref:`int` **get_amount** **(** **)** The number of particles emitted in one emission cycle (corresponding to the :ref:`lifetime`). \ **Note:** Changing :ref:`amount` will reset the particle emission, therefore removing all particles that were already emitted before changing :ref:`amount`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_angle: .. rst-class:: classref-property :ref:`float` **angle** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Initial rotation applied to each particle, in degrees. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_angle_curve: .. rst-class:: classref-property :ref:`Curve` **angle_curve** .. rst-class:: classref-property-setget - void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** - :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Each particle's rotation will be animated along this :ref:`Curve`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_angle_random: .. rst-class:: classref-property :ref:`float` **angle_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Rotation randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_angular_velocity: .. rst-class:: classref-property :ref:`float` **angular_velocity** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Initial angular velocity applied to each particle in *degrees* per second. Sets the speed of rotation of the particle. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_angular_velocity_curve: .. rst-class:: classref-property :ref:`Curve` **angular_velocity_curve** .. rst-class:: classref-property-setget - void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** - :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Each particle's angular velocity will vary along this :ref:`Curve`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_angular_velocity_random: .. rst-class:: classref-property :ref:`float` **angular_velocity_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Angular velocity randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_anim_offset: .. rst-class:: classref-property :ref:`float` **anim_offset** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Particle animation offset. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_anim_offset_curve: .. rst-class:: classref-property :ref:`Curve` **anim_offset_curve** .. rst-class:: classref-property-setget - void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** - :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Each particle's animation offset will vary along this :ref:`Curve`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_anim_offset_random: .. rst-class:: classref-property :ref:`float` **anim_offset_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Animation offset randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_anim_speed: .. rst-class:: classref-property :ref:`float` **anim_speed** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Particle animation speed. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_anim_speed_curve: .. rst-class:: classref-property :ref:`Curve` **anim_speed_curve** .. rst-class:: classref-property-setget - void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** - :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Each particle's animation speed will vary along this :ref:`Curve`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_anim_speed_random: .. rst-class:: classref-property :ref:`float` **anim_speed_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Animation speed randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_color: .. rst-class:: classref-property :ref:`Color` **color** = ``Color( 1, 1, 1, 1 )`` .. rst-class:: classref-property-setget - void **set_color** **(** :ref:`Color` value **)** - :ref:`Color` **get_color** **(** **)** Each particle's initial color. If :ref:`texture` is defined, it will be multiplied by this color. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_color_initial_ramp: .. rst-class:: classref-property :ref:`Gradient` **color_initial_ramp** .. rst-class:: classref-property-setget - void **set_color_initial_ramp** **(** :ref:`Gradient` value **)** - :ref:`Gradient` **get_color_initial_ramp** **(** **)** Each particle's initial color will vary along this :ref:`GradientTexture` (multiplied with :ref:`color`). .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_color_ramp: .. rst-class:: classref-property :ref:`Gradient` **color_ramp** .. rst-class:: classref-property-setget - void **set_color_ramp** **(** :ref:`Gradient` value **)** - :ref:`Gradient` **get_color_ramp** **(** **)** Each particle's color will vary along this :ref:`Gradient` (multiplied with :ref:`color`). .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_damping: .. rst-class:: classref-property :ref:`float` **damping** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| The rate at which particles lose velocity. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_damping_curve: .. rst-class:: classref-property :ref:`Curve` **damping_curve** .. rst-class:: classref-property-setget - void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** - :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Damping will vary along this :ref:`Curve`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_damping_random: .. rst-class:: classref-property :ref:`float` **damping_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Damping randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_direction: .. rst-class:: classref-property :ref:`Vector2` **direction** = ``Vector2( 1, 0 )`` .. rst-class:: classref-property-setget - void **set_direction** **(** :ref:`Vector2` value **)** - :ref:`Vector2` **get_direction** **(** **)** Unit vector specifying the particles' emission direction. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_draw_order: .. rst-class:: classref-property :ref:`DrawOrder` **draw_order** = ``0`` .. rst-class:: classref-property-setget - void **set_draw_order** **(** :ref:`DrawOrder` value **)** - :ref:`DrawOrder` **get_draw_order** **(** **)** Particle draw order. Uses :ref:`DrawOrder` values. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_emission_colors: .. rst-class:: classref-property :ref:`PoolColorArray` **emission_colors** .. rst-class:: classref-property-setget - void **set_emission_colors** **(** :ref:`PoolColorArray` value **)** - :ref:`PoolColorArray` **get_emission_colors** **(** **)** Sets the :ref:`Color`\ s to modulate particles by when using :ref:`EMISSION_SHAPE_POINTS` or :ref:`EMISSION_SHAPE_DIRECTED_POINTS`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_emission_normals: .. rst-class:: classref-property :ref:`PoolVector2Array` **emission_normals** .. rst-class:: classref-property-setget - void **set_emission_normals** **(** :ref:`PoolVector2Array` value **)** - :ref:`PoolVector2Array` **get_emission_normals** **(** **)** Sets the direction the particles will be emitted in when using :ref:`EMISSION_SHAPE_DIRECTED_POINTS`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_emission_points: .. rst-class:: classref-property :ref:`PoolVector2Array` **emission_points** .. rst-class:: classref-property-setget - void **set_emission_points** **(** :ref:`PoolVector2Array` value **)** - :ref:`PoolVector2Array` **get_emission_points** **(** **)** Sets the initial positions to spawn particles when using :ref:`EMISSION_SHAPE_POINTS` or :ref:`EMISSION_SHAPE_DIRECTED_POINTS`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_emission_rect_extents: .. rst-class:: classref-property :ref:`Vector2` **emission_rect_extents** .. rst-class:: classref-property-setget - void **set_emission_rect_extents** **(** :ref:`Vector2` value **)** - :ref:`Vector2` **get_emission_rect_extents** **(** **)** The rectangle's extents if :ref:`emission_shape` is set to :ref:`EMISSION_SHAPE_RECTANGLE`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_emission_shape: .. rst-class:: classref-property :ref:`EmissionShape` **emission_shape** = ``0`` .. rst-class:: classref-property-setget - void **set_emission_shape** **(** :ref:`EmissionShape` value **)** - :ref:`EmissionShape` **get_emission_shape** **(** **)** Particles will be emitted inside this region. See :ref:`EmissionShape` for possible values. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_emission_sphere_radius: .. rst-class:: classref-property :ref:`float` **emission_sphere_radius** .. rst-class:: classref-property-setget - void **set_emission_sphere_radius** **(** :ref:`float` value **)** - :ref:`float` **get_emission_sphere_radius** **(** **)** The sphere's radius if :ref:`emission_shape` is set to :ref:`EMISSION_SHAPE_SPHERE`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_emitting: .. rst-class:: classref-property :ref:`bool` **emitting** = ``true`` .. rst-class:: classref-property-setget - void **set_emitting** **(** :ref:`bool` value **)** - :ref:`bool` **is_emitting** **(** **)** If ``true``, particles are being emitted. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_explosiveness: .. rst-class:: classref-property :ref:`float` **explosiveness** = ``0.0`` .. rst-class:: classref-property-setget - void **set_explosiveness_ratio** **(** :ref:`float` value **)** - :ref:`float` **get_explosiveness_ratio** **(** **)** How rapidly particles in an emission cycle are emitted. If greater than ``0``, there will be a gap in emissions before the next cycle begins. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_fixed_fps: .. rst-class:: classref-property :ref:`int` **fixed_fps** = ``0`` .. rst-class:: classref-property-setget - void **set_fixed_fps** **(** :ref:`int` value **)** - :ref:`int` **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 simulation of the particle system itself. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_flag_align_y: .. rst-class:: classref-property :ref:`bool` **flag_align_y** = ``false`` .. rst-class:: classref-property-setget - void **set_particle_flag** **(** :ref:`Flags` flag, :ref:`bool` enable **)** - :ref:`bool` **get_particle_flag** **(** :ref:`Flags` flag **)** |const| Align Y axis of particle with the direction of its velocity. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_fract_delta: .. rst-class:: classref-property :ref:`bool` **fract_delta** = ``true`` .. rst-class:: classref-property-setget - void **set_fractional_delta** **(** :ref:`bool` value **)** - :ref:`bool` **get_fractional_delta** **(** **)** If ``true``, results in fractional delta calculation which has a smoother particles display effect. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_gravity: .. rst-class:: classref-property :ref:`Vector2` **gravity** = ``Vector2( 0, 98 )`` .. rst-class:: classref-property-setget - void **set_gravity** **(** :ref:`Vector2` value **)** - :ref:`Vector2` **get_gravity** **(** **)** Gravity applied to every particle. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_hue_variation: .. rst-class:: classref-property :ref:`float` **hue_variation** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Initial hue variation applied to each particle. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_hue_variation_curve: .. rst-class:: classref-property :ref:`Curve` **hue_variation_curve** .. rst-class:: classref-property-setget - void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** - :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Each particle's hue will vary along this :ref:`Curve`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_hue_variation_random: .. rst-class:: classref-property :ref:`float` **hue_variation_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Hue variation randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_initial_velocity: .. rst-class:: classref-property :ref:`float` **initial_velocity** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Initial velocity magnitude for each particle. Direction comes from :ref:`spread` and the node's orientation. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_initial_velocity_random: .. rst-class:: classref-property :ref:`float` **initial_velocity_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Initial velocity randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_lifetime: .. rst-class:: classref-property :ref:`float` **lifetime** = ``1.0`` .. rst-class:: classref-property-setget - void **set_lifetime** **(** :ref:`float` value **)** - :ref:`float` **get_lifetime** **(** **)** The amount of time each particle will exist (in seconds). .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_lifetime_randomness: .. rst-class:: classref-property :ref:`float` **lifetime_randomness** = ``0.0`` .. rst-class:: classref-property-setget - void **set_lifetime_randomness** **(** :ref:`float` value **)** - :ref:`float` **get_lifetime_randomness** **(** **)** Particle lifetime randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_linear_accel: .. rst-class:: classref-property :ref:`float` **linear_accel** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Linear acceleration applied to each particle in the direction of motion. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_linear_accel_curve: .. rst-class:: classref-property :ref:`Curve` **linear_accel_curve** .. rst-class:: classref-property-setget - void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** - :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Each particle's linear acceleration will vary along this :ref:`Curve`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_linear_accel_random: .. rst-class:: classref-property :ref:`float` **linear_accel_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Linear acceleration randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_local_coords: .. rst-class:: classref-property :ref:`bool` **local_coords** = ``true`` .. rst-class:: classref-property-setget - void **set_use_local_coordinates** **(** :ref:`bool` value **)** - :ref:`bool` **get_use_local_coordinates** **(** **)** If ``true``, particles use the parent node's coordinate space. If ``false``, they use global coordinates. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_normalmap: .. rst-class:: classref-property :ref:`Texture` **normalmap** .. rst-class:: classref-property-setget - void **set_normalmap** **(** :ref:`Texture` value **)** - :ref:`Texture` **get_normalmap** **(** **)** Normal map to be used for the :ref:`texture` property. \ **Note:** Godot expects the normal map to use X+, Y-, and Z+ coordinates. See `this page `__ for a comparison of normal map coordinates expected by popular engines. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_one_shot: .. rst-class:: classref-property :ref:`bool` **one_shot** = ``false`` .. rst-class:: classref-property-setget - void **set_one_shot** **(** :ref:`bool` value **)** - :ref:`bool` **get_one_shot** **(** **)** If ``true``, only one emission cycle occurs. If set ``true`` during a cycle, emission will stop at the cycle's end. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_orbit_velocity: .. rst-class:: classref-property :ref:`float` **orbit_velocity** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Orbital velocity applied to each particle. Makes the particles circle around origin. Specified in number of full rotations around origin per second. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_orbit_velocity_curve: .. rst-class:: classref-property :ref:`Curve` **orbit_velocity_curve** .. rst-class:: classref-property-setget - void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** - :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Each particle's orbital velocity will vary along this :ref:`Curve`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_orbit_velocity_random: .. rst-class:: classref-property :ref:`float` **orbit_velocity_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Orbital velocity randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_preprocess: .. rst-class:: classref-property :ref:`float` **preprocess** = ``0.0`` .. rst-class:: classref-property-setget - void **set_pre_process_time** **(** :ref:`float` value **)** - :ref:`float` **get_pre_process_time** **(** **)** Particle system starts as if it had already run for this many seconds. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_radial_accel: .. rst-class:: classref-property :ref:`float` **radial_accel** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Radial acceleration applied to each particle. Makes particle accelerate away from origin. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_radial_accel_curve: .. rst-class:: classref-property :ref:`Curve` **radial_accel_curve** .. rst-class:: classref-property-setget - void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** - :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Each particle's radial acceleration will vary along this :ref:`Curve`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_radial_accel_random: .. rst-class:: classref-property :ref:`float` **radial_accel_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Radial acceleration randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_randomness: .. rst-class:: classref-property :ref:`float` **randomness** = ``0.0`` .. rst-class:: classref-property-setget - void **set_randomness_ratio** **(** :ref:`float` value **)** - :ref:`float` **get_randomness_ratio** **(** **)** Emission lifetime randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_scale_amount: .. rst-class:: classref-property :ref:`float` **scale_amount** = ``1.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Initial scale applied to each particle. This can be set to a negative value to flip the particle on both axes. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_scale_amount_curve: .. rst-class:: classref-property :ref:`Curve` **scale_amount_curve** .. rst-class:: classref-property-setget - void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** - :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Each particle's scale will vary along this :ref:`Curve`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_scale_amount_random: .. rst-class:: classref-property :ref:`float` **scale_amount_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Scale randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_speed_scale: .. rst-class:: classref-property :ref:`float` **speed_scale** = ``1.0`` .. rst-class:: classref-property-setget - void **set_speed_scale** **(** :ref:`float` value **)** - :ref:`float` **get_speed_scale** **(** **)** Particle system's running speed scaling ratio. A value of ``0`` can be used to pause the particles. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_spread: .. rst-class:: classref-property :ref:`float` **spread** = ``45.0`` .. rst-class:: classref-property-setget - void **set_spread** **(** :ref:`float` value **)** - :ref:`float` **get_spread** **(** **)** Each particle's initial direction range from ``+spread`` to ``-spread`` degrees. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_tangential_accel: .. rst-class:: classref-property :ref:`float` **tangential_accel** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** - :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Tangential acceleration applied to each particle. Tangential acceleration is perpendicular to the particle's velocity giving the particles a swirling motion. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_tangential_accel_curve: .. rst-class:: classref-property :ref:`Curve` **tangential_accel_curve** .. rst-class:: classref-property-setget - void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** - :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Each particle's tangential acceleration will vary along this :ref:`Curve`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_tangential_accel_random: .. rst-class:: classref-property :ref:`float` **tangential_accel_random** = ``0.0`` .. rst-class:: classref-property-setget - void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** - :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Tangential acceleration randomness ratio. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_property_texture: .. rst-class:: classref-property :ref:`Texture` **texture** .. rst-class:: classref-property-setget - void **set_texture** **(** :ref:`Texture` value **)** - :ref:`Texture` **get_texture** **(** **)** Particle texture. If ``null``, particles will be squares. .. rst-class:: classref-section-separator ---- .. rst-class:: classref-descriptions-group Method Descriptions ------------------- .. _class_CPUParticles2D_method_convert_from_particles: .. rst-class:: classref-method void **convert_from_particles** **(** :ref:`Node` particles **)** Sets this node's properties to match a given :ref:`Particles2D` node with an assigned :ref:`ParticlesMaterial`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_method_get_param: .. rst-class:: classref-method :ref:`float` **get_param** **(** :ref:`Parameter` param **)** |const| Returns the base value of the parameter specified by :ref:`Parameter`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_method_get_param_curve: .. rst-class:: classref-method :ref:`Curve` **get_param_curve** **(** :ref:`Parameter` param **)** |const| Returns the :ref:`Curve` of the parameter specified by :ref:`Parameter`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_method_get_param_randomness: .. rst-class:: classref-method :ref:`float` **get_param_randomness** **(** :ref:`Parameter` param **)** |const| Returns the randomness factor of the parameter specified by :ref:`Parameter`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_method_get_particle_flag: .. rst-class:: classref-method :ref:`bool` **get_particle_flag** **(** :ref:`Flags` flag **)** |const| Returns the enabled state of the given flag (see :ref:`Flags` for options). .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_method_restart: .. rst-class:: classref-method void **restart** **(** **)** Restarts the particle emitter. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_method_set_param: .. rst-class:: classref-method void **set_param** **(** :ref:`Parameter` param, :ref:`float` value **)** Sets the base value of the parameter specified by :ref:`Parameter`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_method_set_param_curve: .. rst-class:: classref-method void **set_param_curve** **(** :ref:`Parameter` param, :ref:`Curve` curve **)** Sets the :ref:`Curve` of the parameter specified by :ref:`Parameter`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_method_set_param_randomness: .. rst-class:: classref-method void **set_param_randomness** **(** :ref:`Parameter` param, :ref:`float` randomness **)** Sets the randomness factor of the parameter specified by :ref:`Parameter`. .. rst-class:: classref-item-separator ---- .. _class_CPUParticles2D_method_set_particle_flag: .. rst-class:: classref-method void **set_particle_flag** **(** :ref:`Flags` flag, :ref:`bool` enable **)** Enables or disables the given flag (see :ref:`Flags` for options). .. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)` .. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)` .. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)` .. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`