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124 lines
5.8 KiB
ReStructuredText
124 lines
5.8 KiB
ReStructuredText
:github_url: hide
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.. _class_VisibleOnScreenEnabler2D:
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VisibleOnScreenEnabler2D
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========================
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**繼承：** :ref:`VisibleOnScreenNotifier2D<class_VisibleOnScreenNotifier2D>` **<** :ref:`Node2D<class_Node2D>` **<** :ref:`CanvasItem<class_CanvasItem>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`
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A rectangular region of 2D space that, when visible on screen, enables a target node.
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.. rst-class:: classref-introduction-group
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說明
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----
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**VisibleOnScreenEnabler2D** contains a rectangular region of 2D space and a target node. The target node will be automatically enabled (via its :ref:`Node.process_mode<class_Node_property_process_mode>` property) when any part of this region becomes visible on the screen, and automatically disabled otherwise. This can for example be used to activate enemies only when the player approaches them.
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See :ref:`VisibleOnScreenNotifier2D<class_VisibleOnScreenNotifier2D>` if you only want to be notified when the region is visible on screen.
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\ **Note:** **VisibleOnScreenEnabler2D** uses the render culling code to determine whether it's visible on screen, so it won't function unless :ref:`CanvasItem.visible<class_CanvasItem_property_visible>` is set to ``true``.
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.. rst-class:: classref-reftable-group
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屬性
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----
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.. table::
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:widths: auto
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+-------------------------------------------------------------+-----------------------------------------------------------------------------------+--------------------+
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| :ref:`EnableMode<enum_VisibleOnScreenEnabler2D_EnableMode>` | :ref:`enable_mode<class_VisibleOnScreenEnabler2D_property_enable_mode>` | ``0`` |
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+-------------------------------------------------------------+-----------------------------------------------------------------------------------+--------------------+
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| :ref:`NodePath<class_NodePath>` | :ref:`enable_node_path<class_VisibleOnScreenEnabler2D_property_enable_node_path>` | ``NodePath("..")`` |
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+-------------------------------------------------------------+-----------------------------------------------------------------------------------+--------------------+
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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列舉
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----
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.. _enum_VisibleOnScreenEnabler2D_EnableMode:
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.. rst-class:: classref-enumeration
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enum **EnableMode**: :ref:`🔗<enum_VisibleOnScreenEnabler2D_EnableMode>`
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.. _class_VisibleOnScreenEnabler2D_constant_ENABLE_MODE_INHERIT:
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.. rst-class:: classref-enumeration-constant
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:ref:`EnableMode<enum_VisibleOnScreenEnabler2D_EnableMode>` **ENABLE_MODE_INHERIT** = ``0``
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對應 :ref:`Node.PROCESS_MODE_INHERIT<class_Node_constant_PROCESS_MODE_INHERIT>`\ 。
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.. _class_VisibleOnScreenEnabler2D_constant_ENABLE_MODE_ALWAYS:
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.. rst-class:: classref-enumeration-constant
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:ref:`EnableMode<enum_VisibleOnScreenEnabler2D_EnableMode>` **ENABLE_MODE_ALWAYS** = ``1``
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對應 :ref:`Node.PROCESS_MODE_ALWAYS<class_Node_constant_PROCESS_MODE_ALWAYS>`\ 。
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.. _class_VisibleOnScreenEnabler2D_constant_ENABLE_MODE_WHEN_PAUSED:
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.. rst-class:: classref-enumeration-constant
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:ref:`EnableMode<enum_VisibleOnScreenEnabler2D_EnableMode>` **ENABLE_MODE_WHEN_PAUSED** = ``2``
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對應 :ref:`Node.PROCESS_MODE_WHEN_PAUSED<class_Node_constant_PROCESS_MODE_WHEN_PAUSED>`\ 。
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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屬性說明
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--------
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.. _class_VisibleOnScreenEnabler2D_property_enable_mode:
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.. rst-class:: classref-property
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:ref:`EnableMode<enum_VisibleOnScreenEnabler2D_EnableMode>` **enable_mode** = ``0`` :ref:`🔗<class_VisibleOnScreenEnabler2D_property_enable_mode>`
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.. rst-class:: classref-property-setget
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- |void| **set_enable_mode**\ (\ value\: :ref:`EnableMode<enum_VisibleOnScreenEnabler2D_EnableMode>`\ )
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- :ref:`EnableMode<enum_VisibleOnScreenEnabler2D_EnableMode>` **get_enable_mode**\ (\ )
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Determines how the target node is enabled. Corresponds to :ref:`ProcessMode<enum_Node_ProcessMode>`. When the node is disabled, it always uses :ref:`Node.PROCESS_MODE_DISABLED<class_Node_constant_PROCESS_MODE_DISABLED>`.
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.. rst-class:: classref-item-separator
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----
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.. _class_VisibleOnScreenEnabler2D_property_enable_node_path:
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.. rst-class:: classref-property
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:ref:`NodePath<class_NodePath>` **enable_node_path** = ``NodePath("..")`` :ref:`🔗<class_VisibleOnScreenEnabler2D_property_enable_node_path>`
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.. rst-class:: classref-property-setget
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- |void| **set_enable_node_path**\ (\ value\: :ref:`NodePath<class_NodePath>`\ )
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- :ref:`NodePath<class_NodePath>` **get_enable_node_path**\ (\ )
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The path to the target node, relative to the **VisibleOnScreenEnabler2D**. The target node is cached; it's only assigned when setting this property (if the **VisibleOnScreenEnabler2D** is inside the scene tree) and every time the **VisibleOnScreenEnabler2D** enters the scene tree. If the path is empty, no node will be affected. If the path is invalid, an error is also generated.
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.. |virtual| replace:: :abbr:`virtual (本方法通常需要使用者覆寫才能生效。)`
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.. |required| replace:: :abbr:`required (This method is required to be overridden when extending its base class.)`
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.. |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。)`
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.. |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。)`
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.. |constructor| replace:: :abbr:`constructor (本方法用於建構一個型別。)`
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.. |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。)`
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.. |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。)`
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.. |bitfield| replace:: :abbr:`BitField (此值是由下列旗標組成的位元遮罩整數。)`
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.. |void| replace:: :abbr:`void (無回傳值。)`
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