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.
This implement branch prediction macros likely() and unlikely() like in
Linux. When using these macros please ensure that when you use them the
condition in the branch really is very, very likely or unlikely. Think
90+% of the time. Primarily useful for error checking. (And I implement
these macros for all our error checking macros now)
See this article for more information:
https://kernelnewbies.org/FAQ/LikelyUnlikely
There are more places where these macros may make sense in renderer and
physics engine. Placing them will come in another commit down the line.
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.
Rename user facing methods and variables as well as the corresponding
C++ methods according to the folloming changes:
* pos -> position
* rot -> rotation
* loc -> location
C++ variables are left as is.
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.
operator= does not need to call reference() if the new value is of the
same type as the old. This saves us zeroing the Variant, This speeds
up reuse of a Variant in a loop by roughly 50%.
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
Previously godot_variant_new_object constructed Variant without
accounting for the fact that the Object can be a Reference, so refcount
was not increased and References were destructed prematurely.
Also, Reference::init_ref did not propagate refcount increment to the
script instance, which led to desync of refcount info on the script
side and Godot side.
