Asserts that the [param condition] is [code]true[/code]. If the [param condition] is [code]false[/code], an error is generated. When running from the editor, the running project will also be paused until you resume it. This can be used as a stronger form of [method @GlobalScope.push_error] for reporting errors to project developers or add-on users. An optional [param message] can be shown in addition to the generic "Assertion failed" message. You can use this to provide additional details about why the assertion failed. [b]Warning:[/b] For performance reasons, the code inside [method assert] is only executed in debug builds or when running the project from the editor. Don't include code that has side effects in an [method assert] call. Otherwise, the project will behave differently when exported in release mode. [codeblock] # Imagine we always want speed to be between 0 and 20. var speed = -10 assert(speed < 20) # True, the program will continue. assert(speed >= 0) # False, the program will stop. assert(speed >= 0 and speed < 20) # You can also combine the two conditional statements in one check. assert(speed < 20, "the speed limit is 20") # Show a message. [/codeblock] [b]Note:[/b] [method assert] is a keyword, not a function. So you cannot access it as a [Callable] or use it inside expressions.
None
An optional [param message] can be shown in addition to the generic "Assertion failed" message. You can use this to provide additional details about why the assertion failed.
[b]Warning:[/b] For performance reasons, the code inside [method assert] is only executed in debug builds or when running the project from the editor. Don't include code that has side effects in an [method assert] call. Otherwise, the project will behave differently when exported in release mode.
[codeblock]
# Imagine we always want speed to be between 0 and 20.
var speed = -10
assert(speed < 20) # True, the program will continue.
assert(speed >= 0) # False, the program will stop.
assert(speed >= 0 and speed < 20) # You can also combine the two conditional statements in one check.
assert(speed < 20, "the speed limit is 20") # Show a message.
[/codeblock]
[b]Note:[/b] [method assert] is a keyword, not a function. So you cannot access it as a [Callable] or use it inside expressions.
อาร์กิวเมนต์ [code]message[/code] ที่เลือกให้ได้ ถ้าให้มา มันจะใช้ในการแสดงข้อความเสริมของ "การตรวจสอบผิดพลาด" คุณสามารถใช้มันในการเพิ่มรายละเอียดว่าทำไมมันถึงตรวจสอบล้มเหลว
[codeblock]
# สมมติว่าเราต้องการความเร็วระหว่าง 0 ถึง 20
speed = -10
assert(speed < 20) # เป็นจริง โปรแกรมจะดำเนินต่อไป
assert(speed >= 0) # เป็นเท็จ โปรแกรมจะหยุดทำงาน
assert(speed >= 0 && speed < 20) # คุณสามารถเชื่อมทั้งสองเงื่อนไขให้อยู่ในรูปเดียวกันได้
assert(speed < 20, "speed = %f, but the speed limit is 20" % speed) # แสดงข้อความที่ชี้แจงรายละเอียด
[/codeblock]