This introduces a new mechanism for handling bit flags. Instead of using an int (or two, or three) to write bits into, this uses the std::bitset in a wrapper class that accepts an enum class as input. This means that certain classes of errors we've had a few of in the engine, where a coder used the wrong set of flags or checked them against the wrong variable (SF_STEALTH vs SIF_STEALTH, for example) can now be detected at a compiler level rather than not at all.
This allows to use a different method of creating and managing the
OpenGL context. This is needed of wxFRED where the OpenGL context is
created by wxWidgets. This will probably also fix#753 since it uses the
old wgl based method of creating an OpenGL context in FRED.
This expands the existing system which only worked on Windows to all
supported platforms.
If the MSVC debug runtime is not present then its behavior is emulated
by adding a header to each allocated memory block.
Replaces calls to double-precision floating point trig functions with
calls to single-precision floating point trig functions as follows:
cos() -> cosf()
sin() -> sinf()
tan() -> tanf()
acos() -> acosf()
asin() -> asinf()
atan() -> atanf()
This allows the compiler to avoid generating unnecessary instructions
that convert a float to a double and then a double back to a float.
Signed-off-by: Peter Mitsis <[email protected]>
Both the ANG_TO_RAD() and fl_radians() macros were serving the same
purpose; they converted an angle from degrees to radians. To reduce
code duplication, ANG_TO_RAD() was replaced with the existing
fl_radians().
Signed-off-by: Peter Mitsis <[email protected]>
This is a renaming of the Dumb_rotation infrastructure, which is now called Intrinsic_rotation. Intrinsic rotations are automatically applied to submodels without the need for an associated subsystem. Dumb rotations are now a type of intrinsic rotation, and look_at rotations will be added in a future PR. The same code will handle both; the only difference is in how the intrinsic rotation is calculated. (In the case of dumb-rotation, it is calculated the same way as normal rotation; in the case of look-at, it will be calculated using submodel_look_at.)
This fixes a bug where, when the skybox is changed after loading a new mission, it tries to delete its model instance which was already deleted in model_instance_free_all. Setting the instance reference to -1 when the instance is freed fixes this. (This is something that would typically be handled by the object_delete function, as it is for ship_delete, asteroid_delete, and weapon_delete, but there is no such equivalent for skyboxes.)
Since this is such a small PR, I decided to also include a stash where I restored a comment that was inadvertently deleted by Swifty's hud_lock variable scope fix PR.
Fabian Woltermann