This backports the work in #7815 and the subsequent fixes in #8393
The following program now works as expected in this branch in both
release_debug and debug mode:
```gdscript
print(sqrt(-1))
print(sqrt(-1))
var simple1=asin(10.0)
var simple2=acos(10.0)
print(simple1)
print(simple2)
```
And successfully prints -nan 4 times
This fixes#9580 and fixes#8925
By adding some PRAY_* macros that encapsulate both the check and the returning of a null reference (UB).
Plus transient avoidance of the flood of warnings emitted by Clang when checking 'this' for NULL.
Plus explanation about the do-while(0) loop in some error macros.
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!
(cherry picked from commit c7bc44d5ad)
-Made it possible to change the editor theme
-Added two options to theme editor plugin to create empty template themes and editor themes
-Make sure that saved themes to .tres keep the null theme fields, to make it easier to keep those when saving/loading the theme
-Rearrange favorites in fs dock with drag and drop
-Removed import -> sub-scene, moved to scenetree contextual menu
-Removed import -> re-import , moved and integrated to FS dock
-Added ability in FS dock to re-import more than one resource
simultaneously
-Added ability to drag from native filesystem explorer to Godot, only
works on Windows though
-Removed scene reimport merge options, never worked well. Eventually
merging materials should be re-added
-Added ability to set custom root node type when importing scenes
-Re-Import is now automatic, can be configured back to manual in editor
settings
-Added resource previews in property list for many resource types
-New SpriteFrames editor, with support for drag&drop, multiple animation
sets, animation speed and loop.
-New AnimatedSprite, with support for all the new features!
AnimatedSprite3D has not been updated yet.
-Added support for drag&drop to other editors, such as resourcepreload,
sample library, etc.
A general speedup should be apparent, with even more peformance increase when compiling optimized.
WARNING: Tested and it seems to work, but if something breaks, please report.
-ability to edit multiple scenes at the same time
-resource internal IDs are now persistent, this makes multiple scene
editing possible but maaaaay result in file corruption bugs (tested and
could not find anything but possibility exists because core code
changed, report immediately if you find this).
-properly save settings, layout, etc when edited
-script editing is independent from scene editing now
-show a yellow box when a script belongs to the scene
-=-=-=-=-=-=-=-=-=-
-Massive improvement to code completion
-Argument hinting for functions
If you manage to out-smart the code-completion in a situation where completion
should be possible to guess, let me know.
Please enter the commit message for your changes. Lines starting
-=-=-=-=-
-Fixed problem with scaling shapes (#827), related to not taking scale in consideration for calculating the moment of inertia
-Added support for multiline strings (or comments) using """
-Save subscene bug, properties not being saved in root node (#806)
-Fix Crash in CollisionPolygon2DEditor (#814)
-Restored Ability to compile without 3D (#795)
-Fix InterpolatedCamera (#803)
-Fix UV Import for OBJ Meshes (#771)
-Fixed issue with modifier gizmos (#794)
-Fixed CapsuleShape gizmo handle (#50)
-Fixed Import Button (not properly working in 3D) (#733)
-Many misc fixes (though no new features)
-=-=-=-=-=-=-=-=-=-=-=-=-=-
3D Physics:
-Fixed "Bounce" parameter in 3D
-Fixed bug affecting Area (sometims it would not detect properly)
-Vehicle Body has seen heavy work
-Added Query API for doing space queries in 3D. Needs some docs though.
-Added JOINTS! Adapted Bullet Joints: and created easy gizmos for setting them up:
-PinJoint
-HingeJoint (with motor)
-SliderJoint
-ConeTwistJoint
-Generic6DOFJoint
-Added OBJECT PICKING! based on the new query API. Any physics object now (Area or Body) has the following signals and virtual functions:
-input_event (mouse or multitouch input over the body)
-mouse_enter (mouse entered the body area)
-mouse_exit (mouse exited body area)
For Area it needs to be activated manually, as it isn't by default (ray goes thru).
Other:
-Begun working on Windows 8 (RT) port. Compiles but does not work yet.
-Added TheoraPlayer library for improved to-texture and portable video support.
-Fixed a few bugs in the renderer, collada importer, collada exporter, etc.
-Detect when free() might crash the project and throw error
-fixed 2D Bounce in physics (3d still broken)
-renamed “on_top” property to “behind_parent”, which makes more sense, old on_top remains there for compatibility but is invisible.
-large amount of fixes
