<?xml version="1.0" encoding="UTF-8" ?> <class name="CPUParticles2D" inherits="Node2D" version="4.0"> <brief_description> CPU-based 2D particle emitter. </brief_description> <description> CPU-based 2D particle node used to create a variety of particle systems and effects. See also [GPUParticles2D], which provides the same functionality with hardware acceleration, but may not run on older devices. </description> <tutorials> <link title="Particle systems (2D)">https://docs.godotengine.org/en/latest/tutorials/2d/particle_systems_2d.html</link> </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 [GPUParticles2D] node with an assigned [ParticlesMaterial]. </description> </method> <method name="get_param" qualifiers="const"> <return type="float"> </return> <argument index="0" name="param" type="int" enum="CPUParticles2D.Parameter"> </argument> <description> Returns the base value of the parameter specified by [enum Parameter]. </description> </method> <method name="get_param_curve" qualifiers="const"> <return type="Curve"> </return> <argument index="0" name="param" type="int" enum="CPUParticles2D.Parameter"> </argument> <description> Returns the [Curve] of the parameter specified by [enum Parameter]. </description> </method> <method name="get_param_randomness" qualifiers="const"> <return type="float"> </return> <argument index="0" name="param" type="int" enum="CPUParticles2D.Parameter"> </argument> <description> Returns the randomness factor of the parameter specified by [enum Parameter]. </description> </method> <method name="get_particle_flag" qualifiers="const"> <return type="bool"> </return> <argument index="0" name="particle_flag" type="int" enum="CPUParticles2D.ParticleFlags"> </argument> <description> Returns the enabled state of the given flag (see [enum ParticleFlags] for options). </description> </method> <method name="restart"> <return type="void"> </return> <description> Restarts the particle emitter. </description> </method> <method name="set_param"> <return type="void"> </return> <argument index="0" name="param" type="int" enum="CPUParticles2D.Parameter"> </argument> <argument index="1" name="value" type="float"> </argument> <description> Sets the base value of the parameter specified by [enum Parameter]. </description> </method> <method name="set_param_curve"> <return type="void"> </return> <argument index="0" name="param" type="int" enum="CPUParticles2D.Parameter"> </argument> <argument index="1" name="curve" type="Curve"> </argument> <description> Sets the [Curve] of the parameter specified by [enum Parameter]. </description> </method> <method name="set_param_randomness"> <return type="void"> </return> <argument index="0" name="param" type="int" enum="CPUParticles2D.Parameter"> </argument> <argument index="1" name="randomness" type="float"> </argument> <description> Sets the randomness factor of the parameter specified by [enum Parameter]. </description> </method> <method name="set_particle_flag"> <return type="void"> </return> <argument index="0" name="particle_flag" type="int" enum="CPUParticles2D.ParticleFlags"> </argument> <argument index="1" name="enable" type="bool"> </argument> <description> Enables or disables the given flag (see [enum ParticleFlags] for options). </description> </method> </methods> <members> <member name="amount" type="int" setter="set_amount" getter="get_amount" default="8"> Number of particles emitted in one emission cycle. </member> <member name="angle" type="float" setter="set_param" getter="get_param" default="0.0"> 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" default="0.0"> Rotation randomness ratio. </member> <member name="angular_velocity" type="float" setter="set_param" getter="get_param" default="0.0"> 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" default="0.0"> Angular velocity randomness ratio. </member> <member name="anim_offset" type="float" setter="set_param" getter="get_param" default="0.0"> 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" default="0.0"> Animation offset randomness ratio. </member> <member name="anim_speed" type="float" setter="set_param" getter="get_param" default="0.0"> 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" default="0.0"> Animation speed randomness ratio. </member> <member name="color" type="Color" setter="set_color" getter="get_color" default="Color(1, 1, 1, 1)"> Each particle's initial color. If [member texture] is defined, it will be multiplied by this color. </member> <member name="color_ramp" type="Gradient" setter="set_color_ramp" getter="get_color_ramp"> Each particle's color will vary along this [Gradient] (multiplied with [member color]). </member> <member name="damping" type="float" setter="set_param" getter="get_param" default="0.0"> 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" default="0.0"> Damping randomness ratio. </member> <member name="direction" type="Vector2" setter="set_direction" getter="get_direction" default="Vector2(1, 0)"> Unit vector specifying the particles' emission direction. </member> <member name="draw_order" type="int" setter="set_draw_order" getter="get_draw_order" enum="CPUParticles2D.DrawOrder" default="0"> Particle draw order. Uses [enum DrawOrder] values. </member> <member name="emission_colors" type="PackedColorArray" setter="set_emission_colors" getter="get_emission_colors"> Sets the [Color]s to modulate particles by when using [constant EMISSION_SHAPE_POINTS] or [constant EMISSION_SHAPE_DIRECTED_POINTS]. </member> <member name="emission_normals" type="PackedVector2Array" setter="set_emission_normals" getter="get_emission_normals"> Sets the direction the particles will be emitted in when using [constant EMISSION_SHAPE_DIRECTED_POINTS]. </member> <member name="emission_points" type="PackedVector2Array" setter="set_emission_points" getter="get_emission_points"> Sets the initial positions to spawn particles when using [constant EMISSION_SHAPE_POINTS] or [constant EMISSION_SHAPE_DIRECTED_POINTS]. </member> <member name="emission_rect_extents" type="Vector2" setter="set_emission_rect_extents" getter="get_emission_rect_extents"> The rectangle's extents if [member emission_shape] is set to [constant EMISSION_SHAPE_RECTANGLE]. </member> <member name="emission_shape" type="int" setter="set_emission_shape" getter="get_emission_shape" enum="CPUParticles2D.EmissionShape" default="0"> Particles will be emitted inside this region. See [enum EmissionShape] for possible values. </member> <member name="emission_sphere_radius" type="float" setter="set_emission_sphere_radius" getter="get_emission_sphere_radius"> The sphere's radius if [member emission_shape] is set to [constant EMISSION_SHAPE_SPHERE]. </member> <member name="emitting" type="bool" setter="set_emitting" getter="is_emitting" default="true"> If [code]true[/code], particles are being emitted. </member> <member name="explosiveness" type="float" setter="set_explosiveness_ratio" getter="get_explosiveness_ratio" default="0.0"> 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. </member> <member name="fixed_fps" type="int" setter="set_fixed_fps" getter="get_fixed_fps" default="0"> 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. </member> <member name="fract_delta" type="bool" setter="set_fractional_delta" getter="get_fractional_delta" default="true"> If [code]true[/code], results in fractional delta calculation which has a smoother particles display effect. </member> <member name="gravity" type="Vector2" setter="set_gravity" getter="get_gravity" default="Vector2(0, 980)"> Gravity applied to every particle. </member> <member name="hue_variation" type="float" setter="set_param" getter="get_param" default="0.0"> 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" default="0.0"> Hue variation randomness ratio. </member> <member name="initial_velocity" type="float" setter="set_param" getter="get_param" default="0.0"> 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" default="0.0"> Initial velocity randomness ratio. </member> <member name="lifetime" type="float" setter="set_lifetime" getter="get_lifetime" default="1.0"> Amount of time each particle will exist. </member> <member name="lifetime_randomness" type="float" setter="set_lifetime_randomness" getter="get_lifetime_randomness" default="0.0"> Particle lifetime randomness ratio. </member> <member name="linear_accel" type="float" setter="set_param" getter="get_param" default="0.0"> 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" default="0.0"> Linear acceleration randomness ratio. </member> <member name="local_coords" type="bool" setter="set_use_local_coordinates" getter="get_use_local_coordinates" default="true"> If [code]true[/code], particles use the parent node's coordinate space. If [code]false[/code], they use global coordinates. </member> <member name="one_shot" type="bool" setter="set_one_shot" getter="get_one_shot" default="false"> 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. </member> <member name="orbit_velocity" type="float" setter="set_param" getter="get_param" default="0.0"> Orbital velocity applied to each particle. Makes the particles circle around origin. Specified in number of full rotations around origin per second. </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" default="0.0"> Orbital velocity randomness ratio. </member> <member name="particle_flag_align_y" type="bool" setter="set_particle_flag" getter="get_particle_flag" default="false"> Align Y axis of particle with the direction of its velocity. </member> <member name="preprocess" type="float" setter="set_pre_process_time" getter="get_pre_process_time" default="0.0"> 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" default="0.0"> 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" default="0.0"> Radial acceleration randomness ratio. </member> <member name="randomness" type="float" setter="set_randomness_ratio" getter="get_randomness_ratio" default="0.0"> Emission lifetime randomness ratio. </member> <member name="scale_amount" type="float" setter="set_param" getter="get_param" default="1.0"> 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" default="0.0"> Scale randomness ratio. </member> <member name="speed_scale" type="float" setter="set_speed_scale" getter="get_speed_scale" default="1.0"> Particle system's running speed scaling ratio. 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" default="45.0"> Each particle's initial direction range from [code]+spread[/code] to [code]-spread[/code] degrees. </member> <member name="tangential_accel" type="float" setter="set_param" getter="get_param" default="0.0"> 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" default="0.0"> Tangential acceleration randomness ratio. </member> <member name="texture" type="Texture2D" setter="set_texture" getter="get_texture"> Particle texture. If [code]null[/code], particles will be squares. </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="PARAM_INITIAL_LINEAR_VELOCITY" value="0" enum="Parameter"> Use with [method set_param], [method set_param_randomness], and [method set_param_curve] 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_curve] 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_curve] 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_curve] 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_curve] 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_curve] 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_curve] 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_curve] 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_curve] 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_curve] 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_curve] 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_curve] 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="PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY" value="0" enum="ParticleFlags"> Use with [method set_particle_flag] to set [member particle_flag_align_y]. </constant> <constant name="PARTICLE_FLAG_ROTATE_Y" value="1" enum="ParticleFlags"> Present for consistency with 3D particle nodes, not used in 2D. </constant> <constant name="PARTICLE_FLAG_DISABLE_Z" value="2" enum="ParticleFlags"> Present for consistency with 3D particle nodes, not used in 2D. </constant> <constant name="PARTICLE_FLAG_MAX" value="3" enum="ParticleFlags"> Represents the size of the [enum ParticleFlags] 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 on the surface of a sphere flattened to two dimensions. </constant> <constant name="EMISSION_SHAPE_RECTANGLE" value="2" enum="EmissionShape"> Particles will be emitted in the area of a rectangle. </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> <constant name="EMISSION_SHAPE_MAX" value="5" enum="EmissionShape"> Represents the size of the [enum EmissionShape] enum. </constant> </constants> </class>