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219 lines
7.9 KiB
ReStructuredText
219 lines
7.9 KiB
ReStructuredText
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.. Generated automatically by doc/tools/makerst.py in Godot's source tree.
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.. DO NOT EDIT THIS FILE, but the bool.xml source instead.
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.. The source is found in doc/classes or modules/<name>/doc_classes.
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.. _class_bool:
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bool
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====
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Boolean built-in type.
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Description
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-----------
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Boolean is a built-in type. There are two boolean values: ``true`` and ``false``. You can think of it as a switch with on or off (1 or 0) setting. Booleans are used in programming for logic in condition statements, like ``if`` statements.
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Booleans can be directly used in ``if`` statements. The code below demonstrates this on the ``if can_shoot:`` line. You don't need to use ``== true``, you only need ``if can_shoot:``. Similarly, use ``if not can_shoot:`` rather than ``== false``.
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.. tabs::
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.. code-tab:: gdscript
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var _can_shoot = true
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func shoot():
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if _can_shoot:
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pass # Perform shooting actions here.
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.. code-tab:: csharp
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private bool _canShoot = true;
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public void Shoot()
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{
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if (_canShoot)
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{
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// Perform shooting actions here.
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}
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}
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The following code will only create a bullet if both conditions are met: action "shoot" is pressed and if ``can_shoot`` is ``true``.
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**Note:** ``Input.is_action_pressed("shoot")`` is also a boolean that is ``true`` when "shoot" is pressed and ``false`` when "shoot" isn't pressed.
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.. tabs::
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.. code-tab:: gdscript
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var _can_shoot = true
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func shoot():
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if _can_shoot and Input.is_action_pressed("shoot"):
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create_bullet()
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.. code-tab:: csharp
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private bool _canShoot = true;
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public void Shoot()
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{
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if (_canShoot && Input.IsActionPressed("shoot"))
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{
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CreateBullet();
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}
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}
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The following code will set ``can_shoot`` to ``false`` and start a timer. This will prevent player from shooting until the timer runs out. Next ``can_shoot`` will be set to ``true`` again allowing player to shoot once again.
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.. tabs::
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.. code-tab:: gdscript
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var _can_shoot = true
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onready var _cool_down = $CoolDownTimer
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func shoot():
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if _can_shoot and Input.is_action_pressed("shoot"):
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create_bullet()
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_can_shoot = false
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_cool_down.start()
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func _on_CoolDownTimer_timeout():
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_can_shoot = true
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.. code-tab:: csharp
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private bool _canShoot = true;
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private Timer _coolDown;
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public override void _Ready()
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{
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_coolDown = GetNode<Timer>("CoolDownTimer");
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}
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public void Shoot()
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{
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if (_canShoot && Input.IsActionPressed("shoot"))
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{
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CreateBullet();
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_canShoot = false;
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_coolDown.Start();
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}
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}
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public void OnCoolDownTimerTimeout()
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{
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_canShoot = true;
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}
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Methods
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-------
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+-------------------------+----------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`bool<class_bool_method_bool>` **(** **)** |constructor| |
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+-------------------------+----------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`bool<class_bool_method_bool>` **(** :ref:`bool<class_bool>` from **)** |constructor| |
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+-------------------------+----------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`bool<class_bool_method_bool>` **(** :ref:`float<class_float>` from **)** |constructor| |
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+-------------------------+----------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`bool<class_bool_method_bool>` **(** :ref:`int<class_int>` from **)** |constructor| |
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+-------------------------+----------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | **operator !=** **(** **)** |operator| |
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+-------------------------+----------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | **operator !=** **(** :ref:`bool<class_bool>` right **)** |operator| |
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+-------------------------+----------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | **operator <** **(** :ref:`bool<class_bool>` right **)** |operator| |
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+-------------------------+----------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | **operator ==** **(** **)** |operator| |
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+-------------------------+----------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | **operator ==** **(** :ref:`bool<class_bool>` right **)** |operator| |
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+-------------------------+----------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | **operator >** **(** :ref:`bool<class_bool>` right **)** |operator| |
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+-------------------------+----------------------------------------------------------------------------------------------+
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Method Descriptions
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-------------------
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.. _class_bool_method_bool:
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- :ref:`bool<class_bool>` **bool** **(** **)** |constructor|
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Constructs a default-initialized ``bool`` set to ``false``.
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----
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- :ref:`bool<class_bool>` **bool** **(** :ref:`bool<class_bool>` from **)** |constructor|
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Constructs a ``bool`` as a copy of the given ``bool``.
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----
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- :ref:`bool<class_bool>` **bool** **(** :ref:`float<class_float>` from **)** |constructor|
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Cast a :ref:`float<class_float>` value to a boolean value, this method will return ``false`` if ``0.0`` is passed in, and ``true`` for all other floats.
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----
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- :ref:`bool<class_bool>` **bool** **(** :ref:`int<class_int>` from **)** |constructor|
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Cast an :ref:`int<class_int>` value to a boolean value, this method will return ``false`` if ``0`` is passed in, and ``true`` for all other ints.
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----
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.. _class_bool_method_operator !=:
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- :ref:`bool<class_bool>` **operator !=** **(** **)** |operator|
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----
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- :ref:`bool<class_bool>` **operator !=** **(** :ref:`bool<class_bool>` right **)** |operator|
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Returns ``true`` if two bools are different, i.e. one is ``true`` and the other is ``false``.
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----
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.. _class_bool_method_operator <:
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- :ref:`bool<class_bool>` **operator <** **(** :ref:`bool<class_bool>` right **)** |operator|
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Returns ``true`` if left operand is ``false`` and right operand is ``true``.
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----
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.. _class_bool_method_operator ==:
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- :ref:`bool<class_bool>` **operator ==** **(** **)** |operator|
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----
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- :ref:`bool<class_bool>` **operator ==** **(** :ref:`bool<class_bool>` right **)** |operator|
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Returns ``true`` if two bools are equal, i.e. both are ``true`` or both are ``false``.
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----
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.. _class_bool_method_operator >:
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- :ref:`bool<class_bool>` **operator >** **(** :ref:`bool<class_bool>` right **)** |operator|
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Returns ``true`` if left operand is ``true`` and right operand is ``false``.
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.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
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.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
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.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
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.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
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.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
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.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`
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