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bool

內建布林型別。

說明

bool 是內建 Variant 型別，只能儲存兩個值之一：true 或 false你可以把它想像成一個可以打開或關閉的開關，或者是一個可以是1或0的二進制數字。

布林值可以直接用在if和其他條件敘述：

var can_shoot = true
if can_shoot:
    launch_bullet()

bool canShoot = true;
if (canShoot)
{
    LaunchBullet();
}

所有比較運算子都傳回布林值（==、>、<= 等）。因此，沒有必要比較布林值本身。您不需要新增 == true 或 == false。

布林值可以與邏輯運算子 and、or、not 組合來建立複雜的條件：

if bullets > 0 and not is_reloading():
    launch_bullet()

if bullets == 0 or is_reloading():
    play_clack_sound()

if (bullets > 0 && !IsReloading())
{
    LaunchBullet();
}

if (bullets == 0 || IsReloading())
{
    PlayClackSound();
}

注意： 在現代程式語言中，邏輯運算子依序求值。如果剩餘條件的結果對最終值沒有影響，則將跳過所有剩餘條件。這個概念被稱為短路評估，可用於避免在某些性能關鍵的情況下評估昂貴的條件。

注意： 依照慣例，傳回布林值的內建方法和屬性通常定義為是非問題、單一形容詞或類似的（String.is_empty()、Node.can_process()、 Camera2D.enabled等）。

建構子

bool	bool()
bool	bool(from: bool)
bool	bool(from: float)
bool	bool(from: int)

運算子

bool	operator !=(right: bool)
bool	operator <(right: bool)
bool	operator ==(right: bool)
bool	operator >(right: bool)

建構子說明

bool bool() 🔗

建構設為 0 的 int。

bool bool(from: bool)

建構給定 bool 的副本。

bool bool(from: float)

Casts a float value to a bool. Returns false if from is equal to 0.0 (including -0.0), and true for all other values (including @GDScript.INF and @GDScript.NAN).

bool bool(from: int)

Casts an int value to a bool. Returns false if from is equal to 0, and true for all other values.

運算子說明

bool operator !=(right: bool) 🔗

Returns true if one bool is true and the other bool is false. Equivalent to logical XOR (NEQ).

bool operator <(right: bool) 🔗

Returns true if the left bool is false and right is true.

bool operator ==(right: bool) 🔗

Returns true if both bools are true, or if both bools are false. Equivalent to logical XNOR (EQ).

bool operator >(right: bool) 🔗

Returns true if the left bool is true and right is false.