- added the flag parsing utilities.

source/CMakeLists.txt

@@ -1015,6 +1015,7 @@ set (PCH_SOURCES
 	core/actorinfo.cpp
 	core/zcc_compile_raze.cpp
 	core/thingdef_data.cpp
+	core/thingdef_properties.cpp
 	core/actorlist.cpp
 	core/automap.cpp
 	core/cheats.cpp

source/core/coreactor.h

@@ -444,3 +444,9 @@ inline PClassActor* PClass::FindActor(FName name)
 	auto cls = FindClass(name);
 	return cls && cls->IsDescendantOf(RUNTIME_CLASS(DCoreActor)) ? static_cast<PClassActor*>(cls) : nullptr;
 }
+
+inline DCoreActor* GetDefaultByType(const PClass* type)
+{
+	return (DCoreActor*)(type->Defaults);
+}
+

source/core/thingdef.h

@@ -67,17 +67,15 @@ struct FFlagDef
 	int varflags;
 };
 
-#if 0
 void FinalizeClass(PClass *cls);
 FFlagDef *FindFlag (const PClass *type, const char *part1, const char *part2, bool strict = false);
+const char* GetFlagName(unsigned int flagnum, int flagoffset);
 void HandleDeprecatedFlags(DCoreActor *defaults, PClassActor *info, bool set, int index);
 bool CheckDeprecatedFlags(DCoreActor *actor, PClassActor *info, int index);
-const char *GetFlagName(unsigned int flagnum, int flagoffset);
 void ModActorFlag(DCoreActor *actor, FFlagDef *fd, bool set);
 bool ModActorFlag(DCoreActor *actor, const FString &flagname, bool set, bool printerror = true);
 INTBOOL CheckActorFlag(DCoreActor *actor, FFlagDef *fd);
 INTBOOL CheckActorFlag(DCoreActor *owner, const char *flagname, bool printerror = true);
-#endif
 
 #define FLAG_NAME(flagnum, flagvar) GetFlagName(flagnum, myoffsetof(DCoreActor, flagvar))
 

source/core/thingdef_properties.cpp

@@ -0,0 +1,305 @@
+/*
+** thingdef-properties.cpp
+**
+** Actor denitions - properties and flags handling
+**
+**---------------------------------------------------------------------------
+** Copyright 2002-2007 Christoph Oelckers
+** Copyright 2004-2007 Randy Heit
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions
+** are met:
+**
+** 1. Redistributions of source code must retain the above copyright
+**    notice, this list of conditions and the following disclaimer.
+** 2. Redistributions in binary form must reproduce the above copyright
+**    notice, this list of conditions and the following disclaimer in the
+**    documentation and/or other materials provided with the distribution.
+** 3. The name of the author may not be used to endorse or promote products
+**    derived from this software without specific prior written permission.
+** 4. When not used as part of ZDoom or a ZDoom derivative, this code will be
+**    covered by the terms of the GNU General Public License as published by
+**    the Free Software Foundation; either version 2 of the License, or (at
+**    your option) any later version.
+**
+** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**---------------------------------------------------------------------------
+**
+*/
+
+#include "gi.h"
+#include "filesystem.h"
+#include "cmdlib.h"
+#include "v_text.h"
+#include "thingdef.h"
+#include "vmbuilder.h"
+#include "types.h"
+#include "v_video.h"
+#include "texturemanager.h"
+#include "coreactor.h"
+#include "thingdef.h"
+
+//==========================================================================
+//
+// Gets a class pointer and performs an error check for correct type
+//
+//==========================================================================
+static PClassActor *FindClassTentative(const char *name, PClass *ancestor, bool optional = false)
+{
+	// "" and "none" mean 'no class'
+	if (name == NULL || *name == 0 || !stricmp(name, "none"))
+	{
+		return NULL;
+	}
+
+	PClass *cls = ancestor->FindClassTentative(name);
+	assert(cls != NULL);	// cls can not be NULL here
+	if (!cls->IsDescendantOf(ancestor))
+	{
+		I_Error("%s does not inherit from %s\n", name, ancestor->TypeName.GetChars());
+	}
+	if (cls->Size == TentativeClass && optional)
+	{
+		cls->bOptional = true;
+	}
+	return static_cast<PClassActor *>(cls);
+}
+
+//==========================================================================
+//
+// Sets or clears a flag, taking field width into account.
+//
+//==========================================================================
+void ModActorFlag(DCoreActor *actor, FFlagDef *fd, bool set)
+{
+	// Little-Endian machines only need one case, because all field sizes
+	// start at the same address. (Unless the machine has unaligned access
+	// exceptions, in which case you'll need multiple cases for it too.)
+#ifdef __BIG_ENDIAN__
+	if (fd->fieldsize == 4)
+#endif
+	{
+		uint32_t *flagvar = (uint32_t *)((char *)actor + fd->structoffset);
+		if (set)
+		{
+			*flagvar |= fd->flagbit;
+		}
+		else
+		{
+			*flagvar &= ~fd->flagbit;
+		}
+	}
+#ifdef __BIG_ENDIAN__
+	else if (fd->fieldsize == 2)
+	{
+		uint16_t *flagvar = (uint16_t *)((char *)actor + fd->structoffset);
+		if (set)
+		{
+			*flagvar |= fd->flagbit;
+		}
+		else
+		{
+			*flagvar &= ~fd->flagbit;
+		}
+	}
+	else
+	{
+		assert(fd->fieldsize == 1);
+		uint8_t *flagvar = (uint8_t *)((char *)actor + fd->structoffset);
+		if (set)
+		{
+			*flagvar |= fd->flagbit;
+		}
+		else
+		{
+			*flagvar &= ~fd->flagbit;
+		}
+	}
+#endif
+}
+
+//==========================================================================
+//
+// Finds a flag by name and sets or clears it
+//
+// Returns true if the flag was found for the actor; else returns false
+//
+//==========================================================================
+
+bool ModActorFlag(DCoreActor *actor, const FString &flagname, bool set, bool printerror)
+{
+	bool found = false;
+
+	if (actor != NULL)
+	{
+		const char *dot = strchr(flagname, '.');
+		FFlagDef *fd;
+		PClassActor* cls = static_cast<PClassActor*>(actor->GetClass());
+
+		if (dot != NULL)
+		{
+			FString part1(flagname.GetChars(), dot - flagname);
+			fd = FindFlag(cls, part1, dot + 1);
+		}
+		else
+		{
+			fd = FindFlag(cls, flagname, NULL);
+		}
+
+		if (fd != NULL)
+		{
+			found = true;
+
+			if (fd->structoffset == -1)
+			{
+				HandleDeprecatedFlags(actor, cls, set, fd->flagbit);
+			}
+		}
+		else if (printerror)
+		{
+			DPrintf(DMSG_ERROR, "ACS/DECORATE: '%s' is not a flag in '%s'\n", flagname.GetChars(), cls->TypeName.GetChars());
+		}
+	}
+
+	return found;
+}
+
+//==========================================================================
+//
+// Returns whether an actor flag is true or not.
+//
+//==========================================================================
+
+INTBOOL CheckActorFlag(DCoreActor *owner, FFlagDef *fd)
+{
+	if (fd->structoffset == -1)
+	{
+		return CheckDeprecatedFlags(owner, static_cast<PClassActor*>(owner->GetClass()), fd->flagbit);
+	}
+	else
+#ifdef __BIG_ENDIAN__
+	if (fd->fieldsize == 4)
+#endif
+	{
+		return fd->flagbit & *(uint32_t *)(((char*)owner) + fd->structoffset);
+	}
+#ifdef __BIG_ENDIAN__
+	else if (fd->fieldsize == 2)
+	{
+		return fd->flagbit & *(uint16_t *)(((char*)owner) + fd->structoffset);
+	}
+	else
+	{
+		assert(fd->fieldsize == 1);
+		return fd->flagbit & *(uint8_t *)(((char*)owner) + fd->structoffset);
+	}
+#endif
+}
+
+INTBOOL CheckActorFlag(DCoreActor *owner, const char *flagname, bool printerror)
+{
+	const char *dot = strchr (flagname, '.');
+	FFlagDef *fd;
+	const PClass *cls = owner->GetClass();
+
+	if (dot != NULL)
+	{
+		FString part1(flagname, dot-flagname);
+		fd = FindFlag (cls, part1, dot+1);
+	}
+	else
+	{
+		fd = FindFlag (cls, flagname, NULL);
+	}
+
+	if (fd != NULL)
+	{
+		return CheckActorFlag(owner, fd);
+	}
+	else
+	{
+		if (printerror) Printf("Unknown flag '%s' in '%s'\n", flagname, cls->TypeName.GetChars());
+		return false;
+	}
+}
+
+//===========================================================================
+//
+// HandleDeprecatedFlags
+//
+// Handles the deprecated flags and sets the respective properties
+// to appropriate values. This is solely intended for backwards
+// compatibility so mixing this with code that is aware of the real
+// properties is not recommended
+//
+//===========================================================================
+void HandleDeprecatedFlags(DCoreActor *defaults, PClassActor *info, bool set, int index)
+{
+}
+
+//===========================================================================
+//
+// CheckDeprecatedFlags
+//
+// Checks properties related to deprecated flags, and returns true only
+// if the relevant properties are configured exactly as they would have
+// been by setting the flag in HandleDeprecatedFlags.
+//
+//===========================================================================
+
+bool CheckDeprecatedFlags(DCoreActor *actor, PClassActor *info, int index)
+{
+	return false; // Any entirely unknown flag is not set
+}
+
+//==========================================================================
+//
+// 
+//
+//==========================================================================
+int MatchString (const char *in, const char **strings)
+{
+	int i;
+
+	for (i = 0; *strings != NULL; i++)
+	{
+		if (!stricmp(in, *strings++))
+		{
+			return i;
+		}
+	}
+	return -1;
+}
+
+//==========================================================================
+//
+// Get access to scripted pointers.
+// They need a bit more work than other variables.
+//
+//==========================================================================
+
+static bool PointerCheck(PType *symtype, PType *checktype)
+{
+	auto symptype = PType::toClassPointer(symtype);
+	auto checkptype = PType::toClassPointer(checktype);
+	return symptype != nullptr && checkptype != nullptr && symptype->ClassRestriction->IsDescendantOf(checkptype->ClassRestriction);
+}
+
+//==========================================================================
+//
+// Info Property handlers
+//
+//==========================================================================
+
+// todo

source/core/zcc_compile_raze.cpp

@@ -602,7 +602,6 @@ void ZCCRazeCompiler::ProcessDefaultFlag(PClassActor *cls, ZCC_FlagStmt *flg)
 		return;
 	}
 
-#if 0
 	auto fd = FindFlag(cls, n1, n2, true);
 	if (fd != nullptr)
 	{
@@ -620,7 +619,6 @@ void ZCCRazeCompiler::ProcessDefaultFlag(PClassActor *cls, ZCC_FlagStmt *flg)
 		}
 	}
 	else
-#endif
 	{
 		Error(flg, "Unknown flag '%s%s%s'", n1, n2 ? "." : "", n2 ? n2 : "");
 	}