This commit addresses multiple issues with `Variant`s that point to an `Object`
which is later released, when it's tried to be accessed again.
Formerly, **while running on the debugger the system would check if the instance id was
still valid** to print warnings or return special values. Some cases weren't being
warned about whatsoever.
Also, a newly allocated `Object` could happen to be allocated at the same memory
address of an old one, making cases of use hard to find and having **`Variant`s pointing
to the old one magically reassigned to the new**.
This commit makes the engine realize all these situations **under debugging**
so you can detect and fix them. Running without a debugger attached will still
behave as it always did.
Also the warning messages have been extended and made clearer.
All that said, in the name of performance there's still one possible case of undefined
behavior: in multithreaded scripts there would be a race condition between a thread freeing
an `Object` and another one trying to operate on it. The latter may not realize the
`Object` has been freed soon enough. But that's a case of bad scripting that was never
supported anyway.
Happy new year to the wonderful Godot community!
We're starting a new decade with a well-established, non-profit, free
and open source game engine, and tons of further improvements in the
pipeline from hundreds of contributors.
Godot will keep getting better, and we're looking forward to all the
games that the community will keep developing and releasing with it.
It seems to stay compatible with formatting done by clang-format 6.0 and 7.0,
so contributors can keep using those versions for now (they will not undo those
changes).
When interpolating between two equal int values a and b, floating point
calculation imprecisions can result in different values depending on
the interpolation factor.
This allows more consistency in the manner we include core headers,
where previously there would be a mix of absolute, relative and
include path-dependent includes.
Found via `codespell -q 3 --skip="./thirdparty,./editor/translations" -I ../godot-word-whitelist.txt`
Whitelist consists of:
```
ang
doubleclick
lod
nd
que
te
unselect
```
Using `misc/scripts/fix_headers.py` on all Godot files.
Some missing header guards were added, and the header inclusion order
was fixed in the Bullet module.
Reduz optimized field indexing in 3c85703 but the changes didn't apply
to dictionary so this code remained untouched. However, the logic for
validity checking was changed but not updated for the dictionary case.
Uninitialzed values in GDScript are of type NIL so not allowing null
comparisons did end up breaking some code.
This commit reenables NULL equality checks for all types. We're going to
have to figure out how to make this fast for the compiler later.
We now allow booleanization of all types. This means that empty versions
of all types now evaluate to false. So a Vector2(0,0), Dictionary(),
etc.
This allows you to write GDScript like:
if not Dictionary():
print("Empty dict")
Booleanization can now also no longer fail. There is no more valid flag,
this changes Variant and GDNative API.
After a short discussion with @reduz and @karroffel we decided to make
all non number/number comparisons return type errors on comparisons.
Now bool == bool is allowed but Vector2 == Vector3 is a type error and
no longer 'not equal'. The same has been done for the != operators.
In addition I forgot to add some failures to some Object operators
meaning that there was a potential for a crasher.
In an effort to make GDScript a little faster replace the double
switch() with a computed goto on compilers that set __GNUC__. For
compilers that don't support computed goto it will fall back to regular
switch/case statements.
In addition disable using boolean values in a mathematical context. Now
boolean values can only be compared with other booleans. Booleans will
also no longer be coerced to integers.
This PR replaces #11308 and fixes#11291
-Added ability to set/get a field in GetSet, as well as assignment ops
-Added a Select node
-Fixed update bugs related to variable list and exported properties, closes#9458
Pedro J. Estébanez
Rémi Verschelde
Rafał Mikrut
marxin
MrCdK
Aaron Franke
qonnop
Juan Linietsky
ShyRed
George Marques
Bojidar Marinov
Poommetee Ketson
luz.paz
Ferenc Arn
Marcelo Fernandez
Hein-Pieter van Braam
bncastle
Thomas Herzog