106 lines
3.6 KiB
XML
106 lines
3.6 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="bool" version="4.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
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<brief_description>
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A built-in boolean type.
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</brief_description>
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<description>
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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.
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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]:
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[codeblocks]
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[gdscript]
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if can_shoot:
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launch_bullet()
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[/gdscript]
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[csharp]
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if (canShoot)
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{
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launchBullet();
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}
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[/csharp]
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[/codeblocks]
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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.
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[bool]s are usually used with the logical operators [code]and[/code], [code]or[/code], and [code]not[/code] to create complex conditions:
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[codeblocks]
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[gdscript]
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if bullets > 0 and not is_reloading:
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launch_bullet()
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if bullets == 0 or is_reloading:
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play_clack_sound()
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[/gdscript]
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[csharp]
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if (bullets > 0 && !isReloading)
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{
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launchBullet();
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}
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if (bullets == 0 || isReloading)
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{
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playClackSound();
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}
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[/csharp]
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[/codeblocks]
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</description>
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<tutorials>
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</tutorials>
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<constructors>
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<constructor name="bool">
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<return type="bool" />
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<description>
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Constructs a default-initialized [bool] set to [code]false[/code].
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</description>
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</constructor>
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<constructor name="bool">
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<return type="bool" />
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<param index="0" name="from" type="bool" />
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<description>
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Constructs a [bool] as a copy of the given [bool].
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</description>
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</constructor>
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<constructor name="bool">
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<return type="bool" />
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<param index="0" name="from" type="float" />
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<description>
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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.
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</description>
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</constructor>
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<constructor name="bool">
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<return type="bool" />
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<param index="0" name="from" type="int" />
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<description>
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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.
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</description>
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</constructor>
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</constructors>
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<operators>
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<operator name="operator !=">
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<return type="bool" />
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<param index="0" name="right" type="bool" />
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<description>
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Returns [code]true[/code] if two bools are different, i.e. one is [code]true[/code] and the other is [code]false[/code].
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</description>
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</operator>
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<operator name="operator <">
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<return type="bool" />
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<param index="0" name="right" type="bool" />
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<description>
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Returns [code]true[/code] if the left operand is [code]false[/code] and the right operand is [code]true[/code].
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</description>
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</operator>
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<operator name="operator ==">
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<return type="bool" />
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<param index="0" name="right" type="bool" />
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<description>
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Returns [code]true[/code] if two bools are equal, i.e. both are [code]true[/code] or both are [code]false[/code].
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</description>
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</operator>
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<operator name="operator >">
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<return type="bool" />
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<param index="0" name="right" type="bool" />
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<description>
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Returns [code]true[/code] if the left operand is [code]true[/code] and the right operand is [code]false[/code].
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</description>
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</operator>
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</operators>
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</class>
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