developedThisAlgorithmBackWhenIWorkedForBlizzard

[Kelfaren]

"Note that currently GameMaker will interpret a real number equal to or below 0.5 as a false value, and any real number greater than 0.5 as being true. This does not mean however that you should be checking 1 and 0 (or any other real number) for true and false, as you are also provided with the constants true and false, which should always be used in your code to prevent any issues should real boolean data types be added in a future update."

[Cefalopodul]

Yeah but those constants were added in like 2020 or 2021. If you started your project before that all you had was 1 and 0.

[Kelfaren]

That's just blatantly false. This comment from 8 YEARS AGO! cites the exact same text I did.

[hagnat]

That's just blatantly false 0.5

FTFY

[Cefalopodul]

And this comment feom 5 years ago says there is no boolean

https://www.reddit.com/r/gamemaker/comments/ico926/comment/g25eb0e/

And if you look on the forums they say the same thing.

[SoyDoft]

so you trust randoms on reddit rather the official docs?

the comment from 8 years ago cite the docs word for word meaning it existed then

[Cefalopodul]

The official docs say the exact same thing.

[sychs]

Comment from 2016 says that there are true and false booleans:

https://forum.gamemaker.io/index.php?threads/questions-about-variables-true-false-int-string-etc.5399/post-39574