bool¶
Boolean built-in type.
Description¶
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 if statements.
Note: In a code below if can_shoot is equivalent of if can_shoot == true. It is good practice to follow the natural spoken language structure when possible. Use if can_shoot rather than if can_shoot == true and use if not can_shoot rather than if can_shoot == false.
var can_shoot = true
func shoot():
if can_shoot:
# Perform shooting actions here.
The following code will only create a bullet if both conditions are met: action “shoot” is pressed and if can_shoot is true.
Note: Input.is_action_pressed("shoot") is also a boolean that is true when “shoot” is pressed and false when “shoot” isn’t pressed.
var can_shoot = true
func shoot():
if can_shoot and Input.is_action_pressed("shoot"):
create_bullet()
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.
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_CoolDownTimer_timeout():
can_shoot = true
Method Descriptions¶
Cast an int value to a boolean value, this method will return true if called with an integer value different to 0 and false in other case.
Cast a float value to a boolean value, this method will return true if called with a floating-point value different to 0 and false in other case.
Cast a String value to a boolean value, this method will return true if called with a non-empty string and false in other case. Examples: bool("False") returns true, bool("") returns false.