Date: Monday December 18, 2000 @ 3:50
Author: sunshine
Update of /cvsroot/crystal/CS/libs/csengine/objects
In directory usw-pr-cvs1:/tmp/cvs-serv30254/csengine/objects
Modified Files:
csspr2d.cpp cssprite.cpp
Log Message:
Eric Sunshine made the following changes to the project:
-*- Repaired the MacOS/X Server, OpenStep, and NextStep ports of Crystal
Space after they had sat idle for several months. Many core-level
changes to the project during the idle time broke these ports rather
severely. The ports are probably about 97% functional now compared to
how functional they were once. Some problems still exist which will
be addressed in subsequent repair and upgrade sessions. For instance,
the NextStep port is not yet fully compatible with Andrew's new
National Keyboard Support. Full compatiblity requires reverse
engineering internal NextStep structures. The MacOS/X Server and
OpenStep ports, on the other hand, are now compatible with the
National Keyboard Support. Further, certain portions of the software
renderer (which Andrew updated since the last time I repaired all such
problems) are broken for the Apple/NeXT ports running at 32-bit mode
on big-endian hardware. Future plans also include a port to the
upcoming MacOS/X, as well as further decoupling of the 2D driver from
the system driver.
-*- The default NeXT 2D canvas is now responsible for the querying and
interpreting its own `simulated depth' option. This is no longer the
responsibility of the system driver.
-*- Eliminated iNeXTSystemDriver (NeXTSystemInterface.h) which published a
method to report the simulated-depth value to the 2D canvas. The
canvas is now entirely responsible for this feature, so the system
driver need not publish this any longer.
-*- NeXTSystemDriver now manages an iEventOutlet which the 2D canvas can
use for default handling of mouse and keyboard events.
-*- NeXTSystemDriver now implements SystemExtension() to provide default
mouse and keyboard event handling on behalf of canvases, as well as
other functionality.
-*- Promoted the ability to suspend the engine's virtual-time clock into
csSystemDriver from NeXTSystemDriver where this feature was originally
implemented. This is useful for ports which allow the user to suspend
the entire engine (for instance, to be friendly on multi-tasking
systems). Suspending the virtual-time clock prevents temporal
anomalies from occurring within the engine even though the real-time
clock continues to elapse. An example of a temporal anomaly would be
the firing of a missile just prior to suspension of the engine. Upon
engine resumption, if the virtual-time clock was not also suspended,
the missile would suddenly jump forward as though much engine time had
elapsed.
-*- Updated Apple/NeXT plug-in loading (NeXTLoadLibrary.cpp) to work
correctly with new plug-in search-path capabilites. Also now
implements a meaningful csPrintLibraryError()
-*- Enhanced keyboard handling in the MacOS/X Server and OpenStep ports to
be compatible with Andrew's National Language Support functionality.
(This feature is not yet fully implemented in the NextStep port.
Doing so requires reverse engineering internal NextStep data
structures.)
-*- Implemented F1 - F12 function key translation in MacOS/X Server and
OpenStep ports. (These keys are not yet implemented in the NextStep
port.)
-*- csEngineConfig is no longer an inner-class of csEngine. This change
was made in order to work around a bug in the NextStep compiler which
was triggered after csObject (from which csEngine inherits) was
changed so that it inherits from iObject. Somehow, the compiler was
getting confused by the QueryInterface(), IncRef(), and DecRef()
methods declared in csEngineConfig as well as in iEngine and csObject
(both of which csEngine inherits from). Making csEngineConfig
stand-alone works around the problem.
-*- In order to work around a multiple-inheritance bug in NextStep
compiler, changed the following classes so that they embed an SCF
interface rather than inherit from it:
iCameraPosition -> csCameraPosition
iMaterialWrapper -> csMaterialWrapper
iRegion -> csRegion
iSpriteTemplate -> csSpriteTemplate
iTextureWrapper -> csTextureWrapper
The compiler's symptom was that it did not think that IncRef(),
DecRef(), and QueryInterface() were implemented in classes which
inherited from iBase multiple times (through different paths).
*BEWARE* There were many places where the engine was dangerously and
blindly casting pointers between the interface and the implementing
class. For instance, a pointer might be cast from a csMaterialWrapper
to an iMaterialWrapper or vice-versa. Although this worked when the
implementing class inherited from the SCF interface, it does _not_
work when the interface is embedded. The danger here is that the
compiler does not warn about this problem since it assumes that the
programmer knew what he or she was doing when using the cast operation
in the first place. I tried to repair all such broken and dangerous
blind casts in which the above classes were involved, but it is
possible that I missed one here or there.
-*- Added an assignment operator to ddgTriangle3 in order to appease the
NextStep compiler.
-*- Added a missing `inline' keyword to csCovMaskTriage::GetState(). The
lack of this keyword resulted in this function being implemented and
exported from every single source file which included the header.
-*- Unified the case of the `full-screen' extension as understood by
iGraphics2D::PerformExtension(). Some canvases expected "fullscreen",
whereas others expected "FullScreen".
-*- Added a preprocessor flag to Blocks which allows all of the broken
networking code to be disabled in one fell-swoop.
-*- Eliminated compilation warning in pttex.cpp.
-*- Minor modification to csphyzik/entity.h to appease broken OpenStep
compiler which wasn't instantiating template methods early enough.
Worked around problem via simple textual reordering of header so that
templatized variables are declared before they are actually referenced
by inline methods.
-*- Augmented TrueType to CS font converter makfile (csfgen.mak) so that
its target only shows up on platforms which also build the TrueType
font server plug-in.
-*- Eliminated several compilation warnings in ddgchull.cpp regarding use
of enumeral and non-enumeral types in conditional expression.
-*- Added missing SYSDEF_ALLOC define to halogen2.cpp.
-*- Worked around minor compiler bug on NextStep which affected csapp.cpp
and txtmgr.cpp.
-*- Eliminated several compilation warnings about "unused computed value"
in CSWS and several applications which utilize CSWS, such as cswstest
and levtool.
-*- Worked around NextStep compiler limitation in null_pix.cpp and
drawpmap.cpp.
-*- 3dsout.cpp now includes cssysdefs.h in order to fake up a `bool' type
for compilers which do not support `bool' natively.
-*- Fixed error in me_app.cpp. Was assinging an mzModificationOriginDepth
constant to a csVector3 instance.
-*- imotion.h no longer imports matrix3.h and quaterni.h. iskeleton.h no
longer imports transfrm.h. Not only was this unnecessary, but it also
caused csSystemDriver to depend upon these classes on NextStep, which
was a less-than-desirable consequence. This resulted in linkage
errors when linking the csSystem library into applications which do
not otherwise link with the csGeometry library (such as scfreg).
(This problem is specific to the NextStep compiler which generates
references to every mentioned class even if the class isn't actually
used.)
-*- All source files in apps/t3d2cs and apps/t3d2cs/libt3d now import
cssysdef.h as the very first included file. This ensures that the
`bool' type is faked up, if necessary, before it is used by any other
imported headers.
-*- Eliminated an "unused variable" warning in tBrush.cpp.
-*- Worked around a bizarre NextStep compiler bug which manifests as an
apparent corruption of the virtual table for csSprite2D. Calls to
QueryInterface() from a csSprite2D pointer would never actually invoke
the real, inherited csSprite::QueryInterface(), and would instead
always return NULL. It is not even clear which, if any, method was
being called in lieu of the real csSprite::QueryInterface(). Calls to
QueryInterface() from a local instance of csSprite2D would succeed as
expected (since the virtual table is not consulted in this case). The
work around for this problem (for magical reasons) is to declare
QueryInterface() in csSprite2D which overrides the inherited
csSprite::QueryInterface(). It is sufficient for this method to
simply exist in csSprite2D. Its actual implementation merely invokes
its superclass' QueryInterface().
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