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<?xml version="1.0" encoding="UTF-8" ?>
<class name="bool" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
<brief_description>
Boolean built-in type.
</brief_description>
<description>
Boolean is a built-in type. There are two boolean values: [code]true[/code] and [code]false[/code]. 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 [code]if[/code] statements.
Booleans can be directly used in [code]if[/code] statements. The code below demonstrates this on the [code]if can_shoot:[/code] line. You don't need to use [code]== true[/code], you only need [code]if can_shoot:[/code]. Similarly, use [code]if not can_shoot:[/code] rather than [code]== false[/code].
[codeblocks]
[gdscript]
var _can_shoot = true
func shoot():
if _can_shoot:
pass # Perform shooting actions here.
[/gdscript]
[csharp]
private bool _canShoot = true;
public void Shoot()
{
if (_canShoot)
{
// Perform shooting actions here.
}
}
[/csharp]
[/codeblocks]
The following code will only create a bullet if both conditions are met: action "shoot" is pressed and if [code]can_shoot[/code] is [code]true[/code].
[b]Note:[/b] [code]Input.is_action_pressed("shoot")[/code] is also a boolean that is [code]true[/code] when "shoot" is pressed and [code]false[/code] when "shoot" isn't pressed.
[codeblocks]
[gdscript]
var _can_shoot = true
func shoot():
if _can_shoot and Input.is_action_pressed("shoot"):
create_bullet()
[/gdscript]
[csharp]
private bool _canShoot = true;
public void Shoot()
{
if (_canShoot && Input.IsActionPressed("shoot"))
{
CreateBullet();
}
}
[/csharp]
[/codeblocks]
The following code will set [code]can_shoot[/code] to [code]false[/code] and start a timer. This will prevent player from shooting until the timer runs out. Next [code]can_shoot[/code] will be set to [code]true[/code] again allowing player to shoot once again.
[codeblocks]
[gdscript]
var _can_shoot = true
@onready var _cool_down = $CoolDownTimer
func shoot():
if _can_shoot and Input.is_action_pressed("shoot"):
create_bullet()
_can_shoot = false
_cool_down.start()
func _on_cool_down_timer_timeout():
_can_shoot = true
[/gdscript]
[csharp]
private bool _canShoot = true;
private Timer _coolDown;
public override void _Ready()
{
_coolDown = GetNode<Timer>("CoolDownTimer");
}
public void Shoot()
{
if (_canShoot && Input.IsActionPressed("shoot"))
{
CreateBullet();
_canShoot = false;
_coolDown.Start();
}
}
public void OnCoolDownTimerTimeout()
{
_canShoot = true;
}
[/csharp]
[/codeblocks]
</description>
<tutorials>
</tutorials>
<constructors>
<constructor name="bool">
<return type="bool" />
<description>
Constructs a default-initialized [bool] set to [code]false[/code].
</description>
</constructor>
<constructor name="bool">
<return type="bool" />
<param index="0" name="from" type="bool" />
<description>
Constructs a [bool] as a copy of the given [bool].
</description>
</constructor>
<constructor name="bool">
<return type="bool" />
<param index="0" name="from" type="float" />
<description>
Cast a [float] value to a boolean value, this method will return [code]false[/code] if [code]0.0[/code] is passed in, and [code]true[/code] for all other floats.
</description>
</constructor>
<constructor name="bool">
<return type="bool" />
<param index="0" name="from" type="int" />
<description>
Cast an [int] value to a boolean value, this method will return [code]false[/code] if [code]0[/code] is passed in, and [code]true[/code] for all other ints.
</description>
</constructor>
</constructors>
<operators>
<operator name="operator !=">
<return type="bool" />
<param index="0" name="right" type="bool" />
<description>
Returns [code]true[/code] if two bools are different, i.e. one is [code]true[/code] and the other is [code]false[/code].
</description>
</operator>
<operator name="operator <">
<return type="bool" />
<param index="0" name="right" type="bool" />
<description>
Returns [code]true[/code] if the left operand is [code]false[/code] and the right operand is [code]true[/code].
</description>
</operator>
<operator name="operator ==">
<return type="bool" />
<param index="0" name="right" type="bool" />
<description>
Returns [code]true[/code] if two bools are equal, i.e. both are [code]true[/code] or both are [code]false[/code].
</description>
</operator>
<operator name="operator >">
<return type="bool" />
<param index="0" name="right" type="bool" />
<description>
Returns [code]true[/code] if the left operand is [code]true[/code] and the right operand is [code]false[/code].
</description>
</operator>
</operators>
</class>
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