636f003f8c
I expanded boolean long description with example of when booleans could be use practice because Boolean Description: Boolean built-in type. was pretty vague. As new to programming person it took me longer than it should have to understand what those are and why I would want to use them. Hopefully this will make it clearer to new users reading documentation Update bool.xml
74 lines
3.2 KiB
XML
74 lines
3.2 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="bool" category="Built-In Types" version="3.2">
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<brief_description>
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Boolean built-in type.
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</brief_description>
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<description>
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Boolean is a built-in type. It can represent any data type that is either a true or false value. You can think of it as an switch with on or off (1 or 0) setting . It's often used as part of programming logic in condition statements like [code]if[/code] statements.
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[b]Note:[/b] In a code below [code]if can_shoot[/code] is equivalent of [code]if can_shoot == true[/code]. It is good practice to follow the natural spoken language structure when possible. Use [code]if can_shoot[/code] rather than [code]if can_shoot == true[/code] and use [code]if not can_shoot[/code] rather than [code]if can_shoot == false[/code].
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[codeblock]
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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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# Perform shooting actions here.
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[/codeblock]
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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].
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[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.
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[codeblock]
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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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[/codeblock]
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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.
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[codeblock]
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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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[/codeblock]
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</description>
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<tutorials>
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</tutorials>
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<methods>
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<method name="bool">
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<return type="bool">
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</return>
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<argument index="0" name="from" type="int">
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</argument>
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<description>
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Cast an [int] value to a boolean value, this method will return [code]true[/code] if called with an integer value different to 0 and [code]false[/code] in other case.
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</description>
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</method>
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<method name="bool">
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<return type="bool">
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</return>
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<argument index="0" name="from" type="float">
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</argument>
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<description>
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Cast a [float] value to a boolean value, this method will return [code]true[/code] if called with a floating-point value different to 0 and [code]false[/code] in other case.
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</description>
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</method>
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<method name="bool">
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<return type="bool">
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</return>
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<argument index="0" name="from" type="String">
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</argument>
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<description>
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Cast a [String] value to a boolean value, this method will return [code]true[/code] if called with a non-empty string and [code]false[/code] in other case. Examples: [code]bool("False")[/code] returns [code]true[/code], [code]bool("")[/code] returns [code]false[/code].
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</description>
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</method>
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</methods>
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<constants>
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</constants>
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</class>
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