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godot-docs-l10n/classes/zh_Hant/class_cpuparticles2d.rst
Rémi Verschelde c3f2364c10 Sync classref with 4.6 branch 
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2025-12-19 16:39:51 +01:00

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.. _class_CPUParticles2D:
CPUParticles2D
==============
**繼承：** :ref:`Node2D<class_Node2D>` **<** :ref:`CanvasItem<class_CanvasItem>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`
基於 CPU 的 2D 粒子發射器。
.. rst-class:: classref-introduction-group
說明
----
基於 CPU 的 2D 粒子節點，可用於建立各種粒子系統、粒子效果。
另見 :ref:`GPUParticles2D<class_GPUParticles2D>`\ ，利用硬體加速提供了相同的功能，但可能無法在較舊的裝置上運作。
.. rst-class:: classref-introduction-group
教學
----
- :doc:`粒子系統（2D） <../tutorials/2d/particle_systems_2d>`
.. rst-class:: classref-reftable-group
屬性
----
.. table::
:widths: auto
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`int<class_int>` | :ref:`amount<class_CPUParticles2D_property_amount>` | ``8`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`angle_curve<class_CPUParticles2D_property_angle_curve>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`angle_max<class_CPUParticles2D_property_angle_max>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`angle_min<class_CPUParticles2D_property_angle_min>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`angular_velocity_curve<class_CPUParticles2D_property_angular_velocity_curve>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`angular_velocity_max<class_CPUParticles2D_property_angular_velocity_max>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`angular_velocity_min<class_CPUParticles2D_property_angular_velocity_min>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`anim_offset_curve<class_CPUParticles2D_property_anim_offset_curve>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`anim_offset_max<class_CPUParticles2D_property_anim_offset_max>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`anim_offset_min<class_CPUParticles2D_property_anim_offset_min>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`anim_speed_curve<class_CPUParticles2D_property_anim_speed_curve>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`anim_speed_max<class_CPUParticles2D_property_anim_speed_max>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`anim_speed_min<class_CPUParticles2D_property_anim_speed_min>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Color<class_Color>` | :ref:`color<class_CPUParticles2D_property_color>` | ``Color(1, 1, 1, 1)`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Gradient<class_Gradient>` | :ref:`color_initial_ramp<class_CPUParticles2D_property_color_initial_ramp>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Gradient<class_Gradient>` | :ref:`color_ramp<class_CPUParticles2D_property_color_ramp>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`damping_curve<class_CPUParticles2D_property_damping_curve>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`damping_max<class_CPUParticles2D_property_damping_max>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`damping_min<class_CPUParticles2D_property_damping_min>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Vector2<class_Vector2>` | :ref:`direction<class_CPUParticles2D_property_direction>` | ``Vector2(1, 0)`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>` | :ref:`draw_order<class_CPUParticles2D_property_draw_order>` | ``0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`PackedColorArray<class_PackedColorArray>` | :ref:`emission_colors<class_CPUParticles2D_property_emission_colors>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`PackedVector2Array<class_PackedVector2Array>` | :ref:`emission_normals<class_CPUParticles2D_property_emission_normals>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`PackedVector2Array<class_PackedVector2Array>` | :ref:`emission_points<class_CPUParticles2D_property_emission_points>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Vector2<class_Vector2>` | :ref:`emission_rect_extents<class_CPUParticles2D_property_emission_rect_extents>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`emission_ring_inner_radius<class_CPUParticles2D_property_emission_ring_inner_radius>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`emission_ring_radius<class_CPUParticles2D_property_emission_ring_radius>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` | :ref:`emission_shape<class_CPUParticles2D_property_emission_shape>` | ``0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`emission_sphere_radius<class_CPUParticles2D_property_emission_sphere_radius>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`bool<class_bool>` | :ref:`emitting<class_CPUParticles2D_property_emitting>` | ``true`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`explosiveness<class_CPUParticles2D_property_explosiveness>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`int<class_int>` | :ref:`fixed_fps<class_CPUParticles2D_property_fixed_fps>` | ``0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`bool<class_bool>` | :ref:`fract_delta<class_CPUParticles2D_property_fract_delta>` | ``true`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Vector2<class_Vector2>` | :ref:`gravity<class_CPUParticles2D_property_gravity>` | ``Vector2(0, 980)`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`hue_variation_curve<class_CPUParticles2D_property_hue_variation_curve>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`hue_variation_max<class_CPUParticles2D_property_hue_variation_max>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`hue_variation_min<class_CPUParticles2D_property_hue_variation_min>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`initial_velocity_max<class_CPUParticles2D_property_initial_velocity_max>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`initial_velocity_min<class_CPUParticles2D_property_initial_velocity_min>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`lifetime<class_CPUParticles2D_property_lifetime>` | ``1.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`lifetime_randomness<class_CPUParticles2D_property_lifetime_randomness>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`linear_accel_curve<class_CPUParticles2D_property_linear_accel_curve>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`linear_accel_max<class_CPUParticles2D_property_linear_accel_max>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`linear_accel_min<class_CPUParticles2D_property_linear_accel_min>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`bool<class_bool>` | :ref:`local_coords<class_CPUParticles2D_property_local_coords>` | ``false`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`bool<class_bool>` | :ref:`one_shot<class_CPUParticles2D_property_one_shot>` | ``false`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`orbit_velocity_curve<class_CPUParticles2D_property_orbit_velocity_curve>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`orbit_velocity_max<class_CPUParticles2D_property_orbit_velocity_max>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`orbit_velocity_min<class_CPUParticles2D_property_orbit_velocity_min>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`bool<class_bool>` | :ref:`particle_flag_align_y<class_CPUParticles2D_property_particle_flag_align_y>` | ``false`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`PhysicsInterpolationMode<enum_Node_PhysicsInterpolationMode>` | physics_interpolation_mode | ``2`` (overrides :ref:`Node<class_Node_property_physics_interpolation_mode>`) |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`preprocess<class_CPUParticles2D_property_preprocess>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`radial_accel_curve<class_CPUParticles2D_property_radial_accel_curve>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`radial_accel_max<class_CPUParticles2D_property_radial_accel_max>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`radial_accel_min<class_CPUParticles2D_property_radial_accel_min>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`randomness<class_CPUParticles2D_property_randomness>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`scale_amount_curve<class_CPUParticles2D_property_scale_amount_curve>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`scale_amount_max<class_CPUParticles2D_property_scale_amount_max>` | ``1.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`scale_amount_min<class_CPUParticles2D_property_scale_amount_min>` | ``1.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`scale_curve_x<class_CPUParticles2D_property_scale_curve_x>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`scale_curve_y<class_CPUParticles2D_property_scale_curve_y>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`int<class_int>` | :ref:`seed<class_CPUParticles2D_property_seed>` | ``0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`speed_scale<class_CPUParticles2D_property_speed_scale>` | ``1.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`bool<class_bool>` | :ref:`split_scale<class_CPUParticles2D_property_split_scale>` | ``false`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`spread<class_CPUParticles2D_property_spread>` | ``45.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`tangential_accel_curve<class_CPUParticles2D_property_tangential_accel_curve>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`tangential_accel_max<class_CPUParticles2D_property_tangential_accel_max>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`tangential_accel_min<class_CPUParticles2D_property_tangential_accel_min>` | ``0.0`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`Texture2D<class_Texture2D>` | :ref:`texture<class_CPUParticles2D_property_texture>` | |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
| :ref:`bool<class_bool>` | :ref:`use_fixed_seed<class_CPUParticles2D_property_use_fixed_seed>` | ``false`` |
+---------------------------------------------------------------------+---------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------+
.. rst-class:: classref-reftable-group
方法
----
.. table::
:widths: auto
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`convert_from_particles<class_CPUParticles2D_method_convert_from_particles>`\ (\ particles\: :ref:`Node<class_Node>`\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`get_param_curve<class_CPUParticles2D_method_get_param_curve>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`get_param_max<class_CPUParticles2D_method_get_param_max>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`get_param_min<class_CPUParticles2D_method_get_param_min>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`bool<class_bool>` | :ref:`get_particle_flag<class_CPUParticles2D_method_get_particle_flag>`\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`\ ) |const| |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`request_particles_process<class_CPUParticles2D_method_request_particles_process>`\ (\ process_time\: :ref:`float<class_float>`\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`restart<class_CPUParticles2D_method_restart>`\ (\ keep_seed\: :ref:`bool<class_bool>` = false\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_particle_flag<class_CPUParticles2D_method_set_particle_flag>`\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`, enable\: :ref:`bool<class_bool>`\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
.. rst-class:: classref-section-separator
----
.. rst-class:: classref-descriptions-group
訊號
----
.. _class_CPUParticles2D_signal_finished:
.. rst-class:: classref-signal
**finished**\ (\ ) :ref:`🔗<class_CPUParticles2D_signal_finished>`
所有活動粒子完成處理時發出。當 :ref:`one_shot<class_CPUParticles2D_property_one_shot>` 停用時，粒子將連續處理，因此永遠不會發出。
.. rst-class:: classref-section-separator
----
.. rst-class:: classref-descriptions-group
列舉
----
.. _enum_CPUParticles2D_DrawOrder:
.. rst-class:: classref-enumeration
enum **DrawOrder**: :ref:`🔗<enum_CPUParticles2D_DrawOrder>`
.. _class_CPUParticles2D_constant_DRAW_ORDER_INDEX:
.. rst-class:: classref-enumeration-constant
:ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>` **DRAW_ORDER_INDEX** = ``0``
粒子按發射順序繪製。
.. _class_CPUParticles2D_constant_DRAW_ORDER_LIFETIME:
.. rst-class:: classref-enumeration-constant
:ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>` **DRAW_ORDER_LIFETIME** = ``1``
Particles are drawn in order of remaining lifetime. In other words, the particle with the highest lifetime is drawn at the front.
.. rst-class:: classref-item-separator
----
.. _enum_CPUParticles2D_Parameter:
.. rst-class:: classref-enumeration
enum **Parameter**: :ref:`🔗<enum_CPUParticles2D_Parameter>`
.. _class_CPUParticles2D_constant_PARAM_INITIAL_LINEAR_VELOCITY:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_INITIAL_LINEAR_VELOCITY** = ``0``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定初始速度屬性。
.. _class_CPUParticles2D_constant_PARAM_ANGULAR_VELOCITY:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_ANGULAR_VELOCITY** = ``1``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定角速度屬性。
.. _class_CPUParticles2D_constant_PARAM_ORBIT_VELOCITY:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_ORBIT_VELOCITY** = ``2``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定軌道速度屬性。
.. _class_CPUParticles2D_constant_PARAM_LINEAR_ACCEL:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_LINEAR_ACCEL** = ``3``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定線性加速度屬性。
.. _class_CPUParticles2D_constant_PARAM_RADIAL_ACCEL:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_RADIAL_ACCEL** = ``4``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定徑向加速度屬性。
.. _class_CPUParticles2D_constant_PARAM_TANGENTIAL_ACCEL:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_TANGENTIAL_ACCEL** = ``5``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定切向加速度屬性。
.. _class_CPUParticles2D_constant_PARAM_DAMPING:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_DAMPING** = ``6``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定阻尼屬性。
.. _class_CPUParticles2D_constant_PARAM_ANGLE:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_ANGLE** = ``7``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定角度屬性。
.. _class_CPUParticles2D_constant_PARAM_SCALE:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_SCALE** = ``8``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定縮放屬性。
.. _class_CPUParticles2D_constant_PARAM_HUE_VARIATION:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_HUE_VARIATION** = ``9``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定色相變化屬性。
.. _class_CPUParticles2D_constant_PARAM_ANIM_SPEED:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_ANIM_SPEED** = ``10``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定動畫速度屬性。
.. _class_CPUParticles2D_constant_PARAM_ANIM_OFFSET:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_ANIM_OFFSET** = ``11``
與 :ref:`set_param_min()<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max()<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve()<class_CPUParticles2D_method_set_param_curve>` 一起使用，設定動畫偏移屬性。
.. _class_CPUParticles2D_constant_PARAM_MAX:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_MAX** = ``12``
代表 :ref:`Parameter<enum_CPUParticles2D_Parameter>` 列舉的大小。
.. rst-class:: classref-item-separator
----
.. _enum_CPUParticles2D_ParticleFlags:
.. rst-class:: classref-enumeration
enum **ParticleFlags**: :ref:`🔗<enum_CPUParticles2D_ParticleFlags>`
.. _class_CPUParticles2D_constant_PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY:
.. rst-class:: classref-enumeration-constant
:ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>` **PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY** = ``0``
與 :ref:`set_particle_flag()<class_CPUParticles2D_method_set_particle_flag>` 一起使用，設定 :ref:`particle_flag_align_y<class_CPUParticles2D_property_particle_flag_align_y>`\ 。
.. _class_CPUParticles2D_constant_PARTICLE_FLAG_ROTATE_Y:
.. rst-class:: classref-enumeration-constant
:ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>` **PARTICLE_FLAG_ROTATE_Y** = ``1``
為了與 3D 粒子節點保持一致而存在，在 2D 中不被使用。
.. _class_CPUParticles2D_constant_PARTICLE_FLAG_DISABLE_Z:
.. rst-class:: classref-enumeration-constant
:ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>` **PARTICLE_FLAG_DISABLE_Z** = ``2``
為了與 3D 粒子節點保持一致而存在，在 2D 中不被使用。
.. _class_CPUParticles2D_constant_PARTICLE_FLAG_MAX:
.. rst-class:: classref-enumeration-constant
:ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>` **PARTICLE_FLAG_MAX** = ``3``
代表 :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>` 列舉的大小。
.. rst-class:: classref-item-separator
----
.. _enum_CPUParticles2D_EmissionShape:
.. rst-class:: classref-enumeration
enum **EmissionShape**: :ref:`🔗<enum_CPUParticles2D_EmissionShape>`
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_POINT:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_POINT** = ``0``
所有粒子將從單個點發射。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_SPHERE:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_SPHERE** = ``1``
粒子將在扁平化到二維的球體內發射。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_SPHERE_SURFACE:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_SPHERE_SURFACE** = ``2``
粒子將在扁平化到二維的球面上發射。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_RECTANGLE:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_RECTANGLE** = ``3``
粒子將在矩形區域內發射。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_POINTS:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_POINTS** = ``4``
粒子將在 :ref:`emission_points<class_CPUParticles2D_property_emission_points>` 中隨機選擇的位置發射。粒子顏色將通過 :ref:`emission_colors<class_CPUParticles2D_property_emission_colors>` 進行調變。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_DIRECTED_POINTS:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_DIRECTED_POINTS** = ``5``
粒子將在 :ref:`emission_points<class_CPUParticles2D_property_emission_points>` 中隨機選擇的位置發射。粒子的速度和旋轉將基於 :ref:`emission_normals<class_CPUParticles2D_property_emission_normals>` 進行設定。粒子顏色將通過 :ref:`emission_colors<class_CPUParticles2D_property_emission_colors>` 進行調變。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_RING:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_RING** = ``6``
Particles will be emitted in the area of a ring parameterized by its outer and inner radius.
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_MAX:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_MAX** = ``7``
代表 :ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` 列舉的大小。
.. rst-class:: classref-section-separator
----
.. rst-class:: classref-descriptions-group
屬性說明
--------
.. _class_CPUParticles2D_property_amount:
.. rst-class:: classref-property
:ref:`int<class_int>` **amount** = ``8`` :ref:`🔗<class_CPUParticles2D_property_amount>`
.. rst-class:: classref-property-setget
- |void| **set_amount**\ (\ value\: :ref:`int<class_int>`\ )
- :ref:`int<class_int>` **get_amount**\ (\ )
單個發射週期內發射的粒子數。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angle_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **angle_curve** :ref:`🔗<class_CPUParticles2D_property_angle_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
Each particle's rotation will be animated along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angle_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **angle_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_angle_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
套用於每個粒子的最大初始旋轉，單位：度。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angle_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **angle_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_angle_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`angle_max<class_CPUParticles2D_property_angle_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angular_velocity_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **angular_velocity_curve** :ref:`🔗<class_CPUParticles2D_property_angular_velocity_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
Each particle's angular velocity will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angular_velocity_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **angular_velocity_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_angular_velocity_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
套用於每個粒子的最大初始角速度（旋轉速度），單位：\ *度*\ 每秒。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angular_velocity_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **angular_velocity_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_angular_velocity_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`angular_velocity_max<class_CPUParticles2D_property_angular_velocity_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_offset_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **anim_offset_curve** :ref:`🔗<class_CPUParticles2D_property_anim_offset_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
Each particle's animation offset will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_offset_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **anim_offset_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_anim_offset_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
與紋理中的影格索引相對應的最大動畫偏移量。\ ``0`` 是第一影格，\ ``1`` 是最後一影格。參見 :ref:`CanvasItemMaterial.particles_animation<class_CanvasItemMaterial_property_particles_animation>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_offset_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **anim_offset_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_anim_offset_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`anim_offset_max<class_CPUParticles2D_property_anim_offset_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_speed_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **anim_speed_curve** :ref:`🔗<class_CPUParticles2D_property_anim_speed_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
Each particle's animation speed will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_speed_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **anim_speed_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_anim_speed_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
最大粒子動畫速度。\ ``1`` 的動畫速度是指粒子在生命週期內會做完整的 ``0`` 到 ``1`` 的偏移迴圈，\ ``2`` 則表示 ``2`` 個迴圈，如此等等。
當動畫速度大於 ``1`` 時，如果希望動畫重複，請記住啟用 :ref:`CanvasItemMaterial.particles_anim_loop<class_CanvasItemMaterial_property_particles_anim_loop>` 屬性。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_speed_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **anim_speed_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_anim_speed_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`anim_speed_max<class_CPUParticles2D_property_anim_speed_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_color:
.. rst-class:: classref-property
:ref:`Color<class_Color>` **color** = ``Color(1, 1, 1, 1)`` :ref:`🔗<class_CPUParticles2D_property_color>`
.. rst-class:: classref-property-setget
- |void| **set_color**\ (\ value\: :ref:`Color<class_Color>`\ )
- :ref:`Color<class_Color>` **get_color**\ (\ )
每個粒子的初始顏色。如果定義了 :ref:`texture<class_CPUParticles2D_property_texture>`\ ，它將乘以該顏色。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_color_initial_ramp:
.. rst-class:: classref-property
:ref:`Gradient<class_Gradient>` **color_initial_ramp** :ref:`🔗<class_CPUParticles2D_property_color_initial_ramp>`
.. rst-class:: classref-property-setget
- |void| **set_color_initial_ramp**\ (\ value\: :ref:`Gradient<class_Gradient>`\ )
- :ref:`Gradient<class_Gradient>` **get_color_initial_ramp**\ (\ )
Each particle's initial color will vary along this :ref:`Gradient<class_Gradient>` (multiplied with :ref:`color<class_CPUParticles2D_property_color>`).
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_color_ramp:
.. rst-class:: classref-property
:ref:`Gradient<class_Gradient>` **color_ramp** :ref:`🔗<class_CPUParticles2D_property_color_ramp>`
.. rst-class:: classref-property-setget
- |void| **set_color_ramp**\ (\ value\: :ref:`Gradient<class_Gradient>`\ )
- :ref:`Gradient<class_Gradient>` **get_color_ramp**\ (\ )
Each particle's color will vary along this :ref:`Gradient<class_Gradient>` over its lifetime (multiplied with :ref:`color<class_CPUParticles2D_property_color>`).
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_damping_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **damping_curve** :ref:`🔗<class_CPUParticles2D_property_damping_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
Damping will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_damping_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **damping_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_damping_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
粒子失去速度的最大速率。例如 ``100`` 的值表示粒子將在 ``1`` 秒內，速度從 ``100`` 變為 ``0``\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_damping_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **damping_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_damping_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`damping_max<class_CPUParticles2D_property_damping_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_direction:
.. rst-class:: classref-property
:ref:`Vector2<class_Vector2>` **direction** = ``Vector2(1, 0)`` :ref:`🔗<class_CPUParticles2D_property_direction>`
.. rst-class:: classref-property-setget
- |void| **set_direction**\ (\ value\: :ref:`Vector2<class_Vector2>`\ )
- :ref:`Vector2<class_Vector2>` **get_direction**\ (\ )
指定粒子發射方向的單位向量。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_draw_order:
.. rst-class:: classref-property
:ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>` **draw_order** = ``0`` :ref:`🔗<class_CPUParticles2D_property_draw_order>`
.. rst-class:: classref-property-setget
- |void| **set_draw_order**\ (\ value\: :ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>`\ )
- :ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>` **get_draw_order**\ (\ )
Particle draw order.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_colors:
.. rst-class:: classref-property
:ref:`PackedColorArray<class_PackedColorArray>` **emission_colors** :ref:`🔗<class_CPUParticles2D_property_emission_colors>`
.. rst-class:: classref-property-setget
- |void| **set_emission_colors**\ (\ value\: :ref:`PackedColorArray<class_PackedColorArray>`\ )
- :ref:`PackedColorArray<class_PackedColorArray>` **get_emission_colors**\ (\ )
設定使用 :ref:`EMISSION_SHAPE_POINTS<class_CPUParticles2D_constant_EMISSION_SHAPE_POINTS>` 或 :ref:`EMISSION_SHAPE_DIRECTED_POINTS<class_CPUParticles2D_constant_EMISSION_SHAPE_DIRECTED_POINTS>` 時對粒子進行調變的 :ref:`Color<class_Color>`\ 。
**Note:** The returned array is *copied* and any changes to it will not update the original property value. See :ref:`PackedColorArray<class_PackedColorArray>` for more details.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_normals:
.. rst-class:: classref-property
:ref:`PackedVector2Array<class_PackedVector2Array>` **emission_normals** :ref:`🔗<class_CPUParticles2D_property_emission_normals>`
.. rst-class:: classref-property-setget
- |void| **set_emission_normals**\ (\ value\: :ref:`PackedVector2Array<class_PackedVector2Array>`\ )
- :ref:`PackedVector2Array<class_PackedVector2Array>` **get_emission_normals**\ (\ )
設定使用 :ref:`EMISSION_SHAPE_DIRECTED_POINTS<class_CPUParticles2D_constant_EMISSION_SHAPE_DIRECTED_POINTS>` 時粒子發射的方向。
**Note:** The returned array is *copied* and any changes to it will not update the original property value. See :ref:`PackedVector2Array<class_PackedVector2Array>` for more details.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_points:
.. rst-class:: classref-property
:ref:`PackedVector2Array<class_PackedVector2Array>` **emission_points** :ref:`🔗<class_CPUParticles2D_property_emission_points>`
.. rst-class:: classref-property-setget
- |void| **set_emission_points**\ (\ value\: :ref:`PackedVector2Array<class_PackedVector2Array>`\ )
- :ref:`PackedVector2Array<class_PackedVector2Array>` **get_emission_points**\ (\ )
設定使用 :ref:`EMISSION_SHAPE_POINTS<class_CPUParticles2D_constant_EMISSION_SHAPE_POINTS>` 或 :ref:`EMISSION_SHAPE_DIRECTED_POINTS<class_CPUParticles2D_constant_EMISSION_SHAPE_DIRECTED_POINTS>` 時出生粒子的初始位置。
**Note:** The returned array is *copied* and any changes to it will not update the original property value. See :ref:`PackedVector2Array<class_PackedVector2Array>` for more details.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_rect_extents:
.. rst-class:: classref-property
:ref:`Vector2<class_Vector2>` **emission_rect_extents** :ref:`🔗<class_CPUParticles2D_property_emission_rect_extents>`
.. rst-class:: classref-property-setget
- |void| **set_emission_rect_extents**\ (\ value\: :ref:`Vector2<class_Vector2>`\ )
- :ref:`Vector2<class_Vector2>` **get_emission_rect_extents**\ (\ )
:ref:`emission_shape<class_CPUParticles2D_property_emission_shape>` 被設定為 :ref:`EMISSION_SHAPE_RECTANGLE<class_CPUParticles2D_constant_EMISSION_SHAPE_RECTANGLE>` 時，該矩形的範圍。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_ring_inner_radius:
.. rst-class:: classref-property
:ref:`float<class_float>` **emission_ring_inner_radius** :ref:`🔗<class_CPUParticles2D_property_emission_ring_inner_radius>`
.. rst-class:: classref-property-setget
- |void| **set_emission_ring_inner_radius**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_emission_ring_inner_radius**\ (\ )
The ring's inner radius if :ref:`emission_shape<class_CPUParticles2D_property_emission_shape>` is set to :ref:`EMISSION_SHAPE_RING<class_CPUParticles2D_constant_EMISSION_SHAPE_RING>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_ring_radius:
.. rst-class:: classref-property
:ref:`float<class_float>` **emission_ring_radius** :ref:`🔗<class_CPUParticles2D_property_emission_ring_radius>`
.. rst-class:: classref-property-setget
- |void| **set_emission_ring_radius**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_emission_ring_radius**\ (\ )
The ring's outer radius if :ref:`emission_shape<class_CPUParticles2D_property_emission_shape>` is set to :ref:`EMISSION_SHAPE_RING<class_CPUParticles2D_constant_EMISSION_SHAPE_RING>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_shape:
.. rst-class:: classref-property
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **emission_shape** = ``0`` :ref:`🔗<class_CPUParticles2D_property_emission_shape>`
.. rst-class:: classref-property-setget
- |void| **set_emission_shape**\ (\ value\: :ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>`\ )
- :ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **get_emission_shape**\ (\ )
Particles will be emitted inside this region.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_sphere_radius:
.. rst-class:: classref-property
:ref:`float<class_float>` **emission_sphere_radius** :ref:`🔗<class_CPUParticles2D_property_emission_sphere_radius>`
.. rst-class:: classref-property-setget
- |void| **set_emission_sphere_radius**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_emission_sphere_radius**\ (\ )
:ref:`emission_shape<class_CPUParticles2D_property_emission_shape>` 被設定為 :ref:`EMISSION_SHAPE_SPHERE<class_CPUParticles2D_constant_EMISSION_SHAPE_SPHERE>` 時，該球體的半徑。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emitting:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **emitting** = ``true`` :ref:`🔗<class_CPUParticles2D_property_emitting>`
.. rst-class:: classref-property-setget
- |void| **set_emitting**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **is_emitting**\ (\ )
如果 ``true``\ ，則正在發射粒子。\ :ref:`emitting<class_CPUParticles2D_property_emitting>` 可用於啟動和停止粒子發射。但是，如果 :ref:`one_shot<class_CPUParticles2D_property_one_shot>` 為 ``true `` 將\ :ref:`emitting<class_CPUParticles2D_property_emitting>` 設為\ ``true`` 直到所有活動粒子完成處理後才會重新啟動發射週期。一旦所有活動粒子都完成，您可以使用\ :ref:`finished<class_CPUParticles2D_signal_finished>` 訊號來通知粒子完成處理。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_explosiveness:
.. rst-class:: classref-property
:ref:`float<class_float>` **explosiveness** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_explosiveness>`
.. rst-class:: classref-property-setget
- |void| **set_explosiveness_ratio**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_explosiveness_ratio**\ (\ )
粒子在單個發射週期中的發射有多急。如果大於 ``0``\ ，則在下一個發射週期開始之前，發射會出現一個間隔。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_fixed_fps:
.. rst-class:: classref-property
:ref:`int<class_int>` **fixed_fps** = ``0`` :ref:`🔗<class_CPUParticles2D_property_fixed_fps>`
.. rst-class:: classref-property-setget
- |void| **set_fixed_fps**\ (\ value\: :ref:`int<class_int>`\ )
- :ref:`int<class_int>` **get_fixed_fps**\ (\ )
粒子系統的畫面播放速率被固定為一個值。例如，將值更改為 2 會使粒子以每秒 2 影格的速度算繪。請注意，這並不會降低粒子系統本身的類比速度。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_fract_delta:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **fract_delta** = ``true`` :ref:`🔗<class_CPUParticles2D_property_fract_delta>`
.. rst-class:: classref-property-setget
- |void| **set_fractional_delta**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_fractional_delta**\ (\ )
如果為 ``為true``\ ，則使用分數差異量 delta 計算，將具有更平滑的粒子顯示效果。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_gravity:
.. rst-class:: classref-property
:ref:`Vector2<class_Vector2>` **gravity** = ``Vector2(0, 980)`` :ref:`🔗<class_CPUParticles2D_property_gravity>`
.. rst-class:: classref-property-setget
- |void| **set_gravity**\ (\ value\: :ref:`Vector2<class_Vector2>`\ )
- :ref:`Vector2<class_Vector2>` **get_gravity**\ (\ )
套用於每個粒子的重力。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_hue_variation_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **hue_variation_curve** :ref:`🔗<class_CPUParticles2D_property_hue_variation_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
Each particle's hue will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_hue_variation_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **hue_variation_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_hue_variation_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
套用於每個粒子的最大初始色相變化。會改變粒子顏色的色相。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_hue_variation_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **hue_variation_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_hue_variation_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`hue_variation_max<class_CPUParticles2D_property_hue_variation_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_initial_velocity_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **initial_velocity_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_initial_velocity_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每個粒子的最大初始速度大小。方向來自 :ref:`direction<class_CPUParticles2D_property_direction>` 和 :ref:`spread<class_CPUParticles2D_property_spread>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_initial_velocity_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **initial_velocity_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_initial_velocity_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`initial_velocity_max<class_CPUParticles2D_property_initial_velocity_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_lifetime:
.. rst-class:: classref-property
:ref:`float<class_float>` **lifetime** = ``1.0`` :ref:`🔗<class_CPUParticles2D_property_lifetime>`
.. rst-class:: classref-property-setget
- |void| **set_lifetime**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_lifetime**\ (\ )
每個粒子存在的時間。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_lifetime_randomness:
.. rst-class:: classref-property
:ref:`float<class_float>` **lifetime_randomness** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_lifetime_randomness>`
.. rst-class:: classref-property-setget
- |void| **set_lifetime_randomness**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_lifetime_randomness**\ (\ )
粒子壽命隨機率。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_linear_accel_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **linear_accel_curve** :ref:`🔗<class_CPUParticles2D_property_linear_accel_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
Each particle's linear acceleration will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_linear_accel_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **linear_accel_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_linear_accel_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
在運動方向上套用於每個粒子的最大線性加速度。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_linear_accel_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **linear_accel_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_linear_accel_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`linear_accel_max<class_CPUParticles2D_property_linear_accel_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_local_coords:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **local_coords** = ``false`` :ref:`🔗<class_CPUParticles2D_property_local_coords>`
.. rst-class:: classref-property-setget
- |void| **set_use_local_coordinates**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_use_local_coordinates**\ (\ )
如果為 ``true``\ ，粒子使用父節點的座標空間（稱為局部座標）。這將導致粒子在移動或旋轉時，沿著 **CPUParticles2D** 節點（及其父節點）移動和旋轉。如果為 ``false``\ ，則粒子使用全域座標；當移動或旋轉時，它們不會沿著 **CPUParticles2D** 節點（及其父節點）移動或旋轉。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_one_shot:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **one_shot** = ``false`` :ref:`🔗<class_CPUParticles2D_property_one_shot>`
.. rst-class:: classref-property-setget
- |void| **set_one_shot**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_one_shot**\ (\ )
如果為 ``true``\ ，則只發生一個發射週期。如果在某個週期內設定為 ``true``\ ，則發射將在該週期結束時停止。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_orbit_velocity_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **orbit_velocity_curve** :ref:`🔗<class_CPUParticles2D_property_orbit_velocity_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
Each particle's orbital velocity will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_orbit_velocity_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **orbit_velocity_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_orbit_velocity_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
套用於每個粒子的最大軌道速度。使粒子圍繞原點旋轉。以每秒圍繞原點的完整旋轉數指定。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_orbit_velocity_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **orbit_velocity_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_orbit_velocity_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`orbit_velocity_max<class_CPUParticles2D_property_orbit_velocity_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_particle_flag_align_y:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **particle_flag_align_y** = ``false`` :ref:`🔗<class_CPUParticles2D_property_particle_flag_align_y>`
.. rst-class:: classref-property-setget
- |void| **set_particle_flag**\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`, enable\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_particle_flag**\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`\ ) |const|
將粒子的 Y 軸與其速度方向對齊。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_preprocess:
.. rst-class:: classref-property
:ref:`float<class_float>` **preprocess** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_preprocess>`
.. rst-class:: classref-property-setget
- |void| **set_pre_process_time**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_pre_process_time**\ (\ )
粒子系統啟動時就好像已經運作了這麼多秒一樣。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_radial_accel_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **radial_accel_curve** :ref:`🔗<class_CPUParticles2D_property_radial_accel_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
Each particle's radial acceleration will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_radial_accel_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **radial_accel_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_radial_accel_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
套用於每個粒子的最大徑向加速度。使粒子加速遠離原點；或如果為負，則加速靠近原點。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_radial_accel_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **radial_accel_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_radial_accel_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`radial_accel_max<class_CPUParticles2D_property_radial_accel_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_randomness:
.. rst-class:: classref-property
:ref:`float<class_float>` **randomness** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_randomness>`
.. rst-class:: classref-property-setget
- |void| **set_randomness_ratio**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_randomness_ratio**\ (\ )
發射壽命隨機率。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_scale_amount_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **scale_amount_curve** :ref:`🔗<class_CPUParticles2D_property_scale_amount_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
Each particle's scale will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_scale_amount_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **scale_amount_max** = ``1.0`` :ref:`🔗<class_CPUParticles2D_property_scale_amount_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
套用於每個粒子的最大初始縮放。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_scale_amount_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **scale_amount_min** = ``1.0`` :ref:`🔗<class_CPUParticles2D_property_scale_amount_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`scale_amount_max<class_CPUParticles2D_property_scale_amount_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_scale_curve_x:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **scale_curve_x** :ref:`🔗<class_CPUParticles2D_property_scale_curve_x>`
.. rst-class:: classref-property-setget
- |void| **set_scale_curve_x**\ (\ value\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_scale_curve_x**\ (\ )
Each particle's horizontal scale will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
\ :ref:`split_scale<class_CPUParticles2D_property_split_scale>` must be enabled.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_scale_curve_y:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **scale_curve_y** :ref:`🔗<class_CPUParticles2D_property_scale_curve_y>`
.. rst-class:: classref-property-setget
- |void| **set_scale_curve_y**\ (\ value\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_scale_curve_y**\ (\ )
Each particle's vertical scale will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
\ :ref:`split_scale<class_CPUParticles2D_property_split_scale>` must be enabled.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_seed:
.. rst-class:: classref-property
:ref:`int<class_int>` **seed** = ``0`` :ref:`🔗<class_CPUParticles2D_property_seed>`
.. rst-class:: classref-property-setget
- |void| **set_seed**\ (\ value\: :ref:`int<class_int>`\ )
- :ref:`int<class_int>` **get_seed**\ (\ )
Sets the random seed used by the particle system. Only effective if :ref:`use_fixed_seed<class_CPUParticles2D_property_use_fixed_seed>` is ``true``.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_speed_scale:
.. rst-class:: classref-property
:ref:`float<class_float>` **speed_scale** = ``1.0`` :ref:`🔗<class_CPUParticles2D_property_speed_scale>`
.. rst-class:: classref-property-setget
- |void| **set_speed_scale**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_speed_scale**\ (\ )
粒子系統的運作速度的縮放率。\ ``0`` 值可用於暫停粒子。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_split_scale:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **split_scale** = ``false`` :ref:`🔗<class_CPUParticles2D_property_split_scale>`
.. rst-class:: classref-property-setget
- |void| **set_split_scale**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_split_scale**\ (\ )
如果為 ``true``\ ，縮放曲線將被拆分成 x 和 y 分量。見 :ref:`scale_curve_x<class_CPUParticles2D_property_scale_curve_x>` 和 :ref:`scale_curve_y<class_CPUParticles2D_property_scale_curve_y>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_spread:
.. rst-class:: classref-property
:ref:`float<class_float>` **spread** = ``45.0`` :ref:`🔗<class_CPUParticles2D_property_spread>`
.. rst-class:: classref-property-setget
- |void| **set_spread**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_spread**\ (\ )
每個粒子的初始方向範圍，從 ``+spread`` 度到 ``-spread`` 度。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_tangential_accel_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **tangential_accel_curve** :ref:`🔗<class_CPUParticles2D_property_tangential_accel_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
Each particle's tangential acceleration will vary along this :ref:`Curve<class_Curve>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_tangential_accel_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **tangential_accel_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_tangential_accel_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
套用於每個粒子的最大切向加速度。切向加速度垂直於粒子的速度，從而使粒子產生渦旋運動。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_tangential_accel_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **tangential_accel_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_tangential_accel_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`tangential_accel_max<class_CPUParticles2D_property_tangential_accel_max>` 的對應最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_texture:
.. rst-class:: classref-property
:ref:`Texture2D<class_Texture2D>` **texture** :ref:`🔗<class_CPUParticles2D_property_texture>`
.. rst-class:: classref-property-setget
- |void| **set_texture**\ (\ value\: :ref:`Texture2D<class_Texture2D>`\ )
- :ref:`Texture2D<class_Texture2D>` **get_texture**\ (\ )
粒子紋理。如果為 ``null``\ ，則粒子將為正方形。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_use_fixed_seed:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **use_fixed_seed** = ``false`` :ref:`🔗<class_CPUParticles2D_property_use_fixed_seed>`
.. rst-class:: classref-property-setget
- |void| **set_use_fixed_seed**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_use_fixed_seed**\ (\ )
If ``true``, particles will use the same seed for every simulation using the seed defined in :ref:`seed<class_CPUParticles2D_property_seed>`. This is useful for situations where the visual outcome should be consistent across replays, for example when using Movie Maker mode.
.. rst-class:: classref-section-separator
----
.. rst-class:: classref-descriptions-group
方法說明
--------
.. _class_CPUParticles2D_method_convert_from_particles:
.. rst-class:: classref-method
|void| **convert_from_particles**\ (\ particles\: :ref:`Node<class_Node>`\ ) :ref:`🔗<class_CPUParticles2D_method_convert_from_particles>`
設定該節點的屬性以配對給定的 :ref:`GPUParticles2D<class_GPUParticles2D>` 節點，該給定節點已分配了一個 :ref:`ParticleProcessMaterial<class_ParticleProcessMaterial>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_get_param_curve:
.. rst-class:: classref-method
:ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| :ref:`🔗<class_CPUParticles2D_method_get_param_curve>`
返回由 :ref:`Parameter<enum_CPUParticles2D_Parameter>` 指定的參數的 :ref:`Curve<class_Curve>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_get_param_max:
.. rst-class:: classref-method
:ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| :ref:`🔗<class_CPUParticles2D_method_get_param_max>`
返回給定參數的最大值範圍。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_get_param_min:
.. rst-class:: classref-method
:ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| :ref:`🔗<class_CPUParticles2D_method_get_param_min>`
返回給定參數的最小值範圍。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_get_particle_flag:
.. rst-class:: classref-method
:ref:`bool<class_bool>` **get_particle_flag**\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`\ ) |const| :ref:`🔗<class_CPUParticles2D_method_get_particle_flag>`
Returns the enabled state of the given particle flag.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_request_particles_process:
.. rst-class:: classref-method
|void| **request_particles_process**\ (\ process_time\: :ref:`float<class_float>`\ ) :ref:`🔗<class_CPUParticles2D_method_request_particles_process>`
Requests the particles to process for extra process time during a single frame.
Useful for particle playback, if used in combination with :ref:`use_fixed_seed<class_CPUParticles2D_property_use_fixed_seed>` or by calling :ref:`restart()<class_CPUParticles2D_method_restart>` with parameter ``keep_seed`` set to ``true``.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_restart:
.. rst-class:: classref-method
|void| **restart**\ (\ keep_seed\: :ref:`bool<class_bool>` = false\ ) :ref:`🔗<class_CPUParticles2D_method_restart>`
Restarts the particle emitter.
If ``keep_seed`` is ``true``, the current random seed will be preserved. Useful for seeking and playback.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_set_param_curve:
.. rst-class:: classref-method
|void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ ) :ref:`🔗<class_CPUParticles2D_method_set_param_curve>`
Sets the :ref:`Curve<class_Curve>` of the parameter specified by :ref:`Parameter<enum_CPUParticles2D_Parameter>`. Should be a unit :ref:`Curve<class_Curve>`.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_set_param_max:
.. rst-class:: classref-method
|void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ ) :ref:`🔗<class_CPUParticles2D_method_set_param_max>`
設定給定參數的最大值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_set_param_min:
.. rst-class:: classref-method
|void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ ) :ref:`🔗<class_CPUParticles2D_method_set_param_min>`
設定給定參數的最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_set_particle_flag:
.. rst-class:: classref-method
|void| **set_particle_flag**\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`, enable\: :ref:`bool<class_bool>`\ ) :ref:`🔗<class_CPUParticles2D_method_set_particle_flag>`
Enables or disables the given particle flag.
.. |virtual| replace:: :abbr:`virtual (本方法通常需要使用者覆寫才能生效。)`
.. |required| replace:: :abbr:`required (This method is required to be overridden when extending its base class.)`
.. |const| replace:: :abbr:`const (本方法沒有副作用。不會修改該實例的任何成員變數。)`
.. |vararg| replace:: :abbr:`vararg (本方法除了這裡描述的參數外，還可以接受任意數量的參數。)`
.. |constructor| replace:: :abbr:`constructor (本方法用於建構一個型別。)`
.. |static| replace:: :abbr:`static (本方法無需實例即可呼叫，因此可以直接使用類別名稱呼叫。)`
.. |operator| replace:: :abbr:`operator (本方法描述將本型別作為左運算元時可用的有效運算子。)`
.. |bitfield| replace:: :abbr:`BitField (此值是由下列旗標組成的位元遮罩整數。)`
.. |void| replace:: :abbr:`void (無回傳值。)`
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