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<?xml version="1.0" encoding="UTF-8" ?>
<class name="bool" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
<brief_description>
A built-in boolean type.
</brief_description>
<description>
A [bool] is always one of two values: [code]true[/code] or [code]false[/code], similar to a switch that is either on or off. Booleans are used in programming for logic in condition statements.
Booleans can be directly used in [code]if[/code] and [code]elif[/code] statements. You don't need to add [code]== true[/code] or [code]== false[/code]:
[codeblocks]
[gdscript]
if can_shoot:
launch_bullet()
[/gdscript]
[csharp]
if (canShoot)
{
launchBullet();
}
[/csharp]
[/codeblocks]
Many common methods and operations return [bool]s, for example, [code]shooting_cooldown <= 0.0[/code] may evaluate to [code]true[/code] or [code]false[/code] depending on the number's value.
[bool]s are usually used with the logical operators [code]and[/code], [code]or[/code], and [code]not[/code] to create complex conditions:
[codeblocks]
[gdscript]
if bullets > 0 and not is_reloading:
launch_bullet()
if bullets == 0 or is_reloading:
play_clack_sound()
[/gdscript]
[csharp]
if (bullets > 0 && !isReloading)
{
launchBullet();
}
if (bullets == 0 || isReloading)
{
playClackSound();
}
[/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 values.
</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 values.
</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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