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gzdoom/src/scripting/thingdef.cpp

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/*
** thingdef.cpp
**
** Actor definitions
**
**---------------------------------------------------------------------------
** Copyright 2002-2008 Christoph Oelckers
** Copyright 2004-2008 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 "actor.h"
#include "info.h"
#include "sc_man.h"
#include "tarray.h"
#include "w_wad.h"
#include "templates.h"
#include "r_defs.h"
#include "a_pickups.h"
#include "s_sound.h"
#include "cmdlib.h"
#include "p_lnspec.h"
#include "a_action.h"
#include "decallib.h"
#include "m_random.h"
#include "i_system.h"
#include "m_argv.h"
#include "p_local.h"
#include "doomerrors.h"
#include "a_weaponpiece.h"
#include "p_conversation.h"
#include "v_text.h"
#include "thingdef.h"
- committed from the wrong subdirectory and missed all files that just changed the #include line.
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#include "codegeneration/codegen.h"
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#include "a_sharedglobal.h"
#include "vmbuilder.h"
#include "stats.h"
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
void InitThingdef();
// STATIC FUNCTION PROTOTYPES --------------------------------------------
PClassActor *QuestItemClasses[31];
//==========================================================================
//
- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
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// SetImplicitArgs
//
// Adds the parameters implied by the function flags.
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//
//==========================================================================
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
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void SetImplicitArgs(TArray<PType *> *args, TArray<DWORD> *argflags, TArray<FName> *argnames, PClass *cls, DWORD funcflags)
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{
- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
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// Must be called before adding any other arguments.
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
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assert(args == nullptr || args->Size() == 0);
assert(argflags == nullptr || argflags->Size() == 0);
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- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
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if (funcflags & VARF_Method)
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{
- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
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// implied self pointer
- pass the current function to the compile context instead of just the containing class.
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if (args != nullptr) args->Push(NewPointer(cls));
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
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if (argflags != nullptr) argflags->Push(VARF_Implicit);
if (argnames != nullptr) argnames->Push(NAME_self);
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}
- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
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if (funcflags & VARF_Action)
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{
- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
2016-10-12 22:53:59 +00:00
// implied caller and callingstate pointers
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
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if (args != nullptr)
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{
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
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// Special treatment for weapons and CustomInventorys: 'self' is not the defining class but the actual user of the item, so this pointer must be of type 'Actor'
- Added AStateProvider class which is used to define the special action function behavior of weapons and custom inventorys. The class itself does not do anything, but the compiler will use it to set up the action function prototypes differently which in turn will be used to do type checking during code generation.
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if (cls->IsDescendantOf(RUNTIME_CLASS(AStateProvider)))
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
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{
- pass the current function to the compile context instead of just the containing class.
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args->Insert(0, NewPointer(RUNTIME_CLASS(AActor))); // this must go in before the real pointer to the containing class.
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
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}
- Added AStateProvider class which is used to define the special action function behavior of weapons and custom inventorys. The class itself does not do anything, but the compiler will use it to set up the action function prototypes differently which in turn will be used to do type checking during code generation.
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else
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
2016-10-15 12:36:08 +00:00
{
- pass the current function to the compile context instead of just the containing class.
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args->Push(NewPointer(cls));
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
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}
args->Push(TypeState/*Info*/); // fixme: TypeState is not the correct type here!!!
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}
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
2016-10-15 12:36:08 +00:00
if (argflags != nullptr)
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{
- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
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argflags->Push(VARF_Implicit);
argflags->Push(VARF_Implicit);
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}
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
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if (argnames != nullptr)
{
argnames->Push(NAME_invoker);
argnames->Push(NAME_stateinfo);
}
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}
}
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
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//==========================================================================
//
// CreateAnonymousFunction
//
// Creates a function symbol for an anonymous function
// This contains actual info about the implied variables which is needed
// during code generation.
//
//==========================================================================
PFunction *CreateAnonymousFunction(PClass *containingclass, PType *returntype, int flags)
{
TArray<PType *> rets(1);
TArray<PType *> args;
TArray<uint32_t> argflags;
TArray<FName> argnames;
rets[0] = returntype != nullptr? returntype : TypeError; // Use TypeError as placeholder if we do not know the return type yet.
SetImplicitArgs(&args, &argflags, &argnames, containingclass, flags);
- give PFunction a bit more information: * explicitly require passing the owning class when creating it. * extract self pointer class when adding a variant. * put the flags on the single variants, we can not fully rule out that they will be 100% identical, if variants ever get allowed.
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PFunction *sym = new PFunction(containingclass, NAME_None); // anonymous functions do not have names.
sym->AddVariant(NewPrototype(rets, args), argflags, argnames, nullptr, VARF_Action|VARF_Method);
- more preparations to compile functions: * Allow PFunction to work without a VMFunction being attached. * The Variant for a function must store the prototype itself instead of relying on the VMFunction it points to. Otherwise it would not be possible to reference a prototype during compilation of the function because it does not exist yet. * Give the variant a list of the function's argument's names, because these are also needed to compile the function. * create an anonymous function symbol when the function gets registered to the builder. At this point we have all the needed information to set it up correctly, but later this is no longer the case. This is the most convenient info to have here because it contains everything that's needed to compile the function in the proper context, so it has to be present when starting compilation. * added some preparations to implement special handling for weapons and custom inventory items, which can run action functions in another actor's context. This part is not active yet but the basics are present in SetImplicitArgs.
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return sym;
}
- added FindClassMemberFunction which retrieves a function symbol and performs some verification. - removed Self parameter from FxFunctionCall. Actual member function calls through an object require quite different handling so lumping these two together makes no sense. - added a workaround to deal with ACS_NamedExecuteWithResult to both the compiler and FindClassMemberFunction. The way the ZScript compiler sets this up means that it will call the builtin, not the actual action function, so the parser needs to do some explicit check to get past the same-named action function. - pass a proper self pointer to FxActionSpecial. Although it's still not being used, propagating design shortcuts through several function levels is a very, very bad idea.
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//==========================================================================
//
// FindClassMemberFunction
//
// Looks for a name in a class's symbol table and outputs appropriate messages
//
//==========================================================================
PFunction *FindClassMemberFunction(PClass *selfcls, PClass *funccls, FName name, FScriptPosition &sc)
{
// Skip ACS_NamedExecuteWithResult. Anything calling this should use the builtin instead.
if (name == NAME_ACS_NamedExecuteWithResult) return nullptr;
PSymbolTable *symtable;
auto symbol = selfcls->Symbols.FindSymbolInTable(name, symtable);
auto funcsym = dyn_cast<PFunction>(symbol);
if (symbol != nullptr)
{
if (funcsym == nullptr)
{
sc.Message(MSG_ERROR, "%s is not a member function of %s", name.GetChars(), selfcls->TypeName.GetChars());
}
else if (funcsym->Variants[0].Flags & VARF_Private && symtable != &funccls->Symbols)
{
// private access is only allowed if the symbol table belongs to the class in which the current function is being defined.
sc.Message(MSG_ERROR, "%s is declared private and not accessible", symbol->SymbolName.GetChars());
}
else if (funcsym->Variants[0].Flags & VARF_Deprecated)
{
sc.Message(MSG_WARNING, "Call to deprecated function %s", symbol->SymbolName.GetChars());
}
}
// return nullptr if the name cannot be found in the symbol table so that the calling code can do other checks.
return funcsym;
}
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//==========================================================================
//
// LoadActors
//
// Called from FActor::StaticInit()
//
//==========================================================================
- started to make ZScript parser work on real-life data. It will now read a lump named ZSCRIPT which is a list of filenames to be compiled. - place generated symbols into GlobalSymbols instead of a scratch table that will be discarded right away. - allow the state object to change source file scanners (I hope this works, but the old implementation was unable to do more than one with with a parse state so I had to change it.) - It can now parse constants.txt and insert everything in it into the global symbol table and make subsequent DECORATE compile properly.
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void ParseScripts();
- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
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void ParseAllDecorate();
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void LoadActors ()
{
cycle_t timer;
timer.Reset(); timer.Clock();
- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
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FScriptPosition::ResetErrorCounter();
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InitThingdef();
- started to make ZScript parser work on real-life data. It will now read a lump named ZSCRIPT which is a list of filenames to be compiled. - place generated symbols into GlobalSymbols instead of a scratch table that will be discarded right away. - allow the state object to change source file scanners (I hope this works, but the old implementation was unable to do more than one with with a parse state so I had to change it.) - It can now parse constants.txt and insert everything in it into the global symbol table and make subsequent DECORATE compile properly.
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ParseScripts();
- count errors in the parser and abort afterward if there were some. - use FScriptPosition's error counter throughout the compiler so that there is only one counter for everything, not two. Parts of the compiler use FScriptPosition, so this is easier to handle than having a separate counter in the compiler class. It also avoids having to pass the compiler object to any function where an error may be output. The TreeNodes contain sufficient data to be converted to an FScriptPosition and using that for error message formatting.
2016-10-15 10:15:25 +00:00
- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
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ParseAllDecorate();
FunctionBuildList.Build();
- resorted some of thingdef.cpp's contents into more appropriate files. - split FinishActor into several functions. While DECORATE can, ZSCRIPT cannot do all this in one go. - split the state finalization into several class-specific virtual functions.
2016-10-12 18:42:41 +00:00
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if (FScriptPosition::ErrorCounter > 0)
{
I_Error("%d errors while parsing DECORATE scripts", FScriptPosition::ErrorCounter);
}
- separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code.
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int errorcount = 0;
for (auto ti : PClassActor::AllActorClasses)
{
if (ti->Size == TentativeClass)
{
Printf(TEXTCOLOR_RED "Class %s referenced but not defined\n", ti->TypeName.GetChars());
errorcount++;
continue;
}
if (GetDefaultByType(ti) == nullptr)
{
Printf(TEXTCOLOR_RED "No ActorInfo defined for class '%s'\n", ti->TypeName.GetChars());
errorcount++;
continue;
}
}
if (errorcount > 0)
{
I_Error("%d errors during actor postprocessing", errorcount);
}
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timer.Unclock();
if (!batchrun) Printf("DECORATE parsing took %.2f ms\n", timer.TimeMS());
// Base time: ~52 ms
- resorted some of thingdef.cpp's contents into more appropriate files. - split FinishActor into several functions. While DECORATE can, ZSCRIPT cannot do all this in one go. - split the state finalization into several class-specific virtual functions.
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// Since these are defined in DECORATE now the table has to be initialized here.
for (int i = 0; i < 31; i++)
{
char fmt[20];
mysnprintf(fmt, countof(fmt), "QuestItem%d", i + 1);
QuestItemClasses[i] = PClass::FindActor(fmt);
}
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}
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