mirror of
https://github.com/ZDoom/qzdoom.git
synced 2024-12-15 06:51:36 +00:00
1396 lines
33 KiB
C++
1396 lines
33 KiB
C++
/*
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** thingdef-parse.cpp
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**
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** Actor definitions - all parser related code
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**
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**---------------------------------------------------------------------------
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** Copyright 2002-2007 Christoph Oelckers
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** Copyright 2004-2007 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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** 4. When not used as part of ZDoom or a ZDoom derivative, this code will be
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** covered by the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or (at
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** your option) any later version.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include "doomtype.h"
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#include "actor.h"
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#include "a_pickups.h"
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#include "sc_man.h"
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#include "thingdef.h"
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#include "a_morph.h"
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#include "cmdlib.h"
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#include "templates.h"
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#include "v_palette.h"
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#include "doomerrors.h"
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#include "i_system.h"
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#include "thingdef_exp.h"
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#include "w_wad.h"
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#include "v_video.h"
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#include "version.h"
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#include "v_text.h"
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#include "m_argv.h"
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void ParseOldDecoration(FScanner &sc, EDefinitionType def);
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//==========================================================================
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//
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// ParseParameter
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//
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// Parses a parameter - either a default in a function declaration
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// or an argument in a function call.
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//
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//==========================================================================
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FxExpression *ParseParameter(FScanner &sc, PClassActor *cls, PType *type, bool constant)
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{
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FxExpression *x = NULL;
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int v;
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if (type == TypeSound)
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{
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sc.MustGetString();
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x = new FxConstant(FSoundID(sc.String), sc);
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}
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else if (type == TypeSInt32 || type == TypeFloat64)
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{
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x = ParseExpression (sc, cls, constant);
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if (constant && !x->isConstant())
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{
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sc.ScriptMessage("Default parameter must be constant.");
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FScriptPosition::ErrorCounter++;
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}
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// Do automatic coercion between ints and floats.
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if (type == TypeSInt32)
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{
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x = new FxIntCast(x);
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}
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else
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{
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x = new FxFloatCast(x);
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}
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}
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else if (type == TypeName || type == TypeString)
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{
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sc.SetEscape(true);
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sc.MustGetString();
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sc.SetEscape(false);
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if (type == TypeName)
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{
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x = new FxConstant(sc.String[0] ? FName(sc.String) : NAME_None, sc);
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}
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else
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{
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x = new FxConstant(strbin1(sc.String), sc);
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}
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}
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else if (type == TypeColor)
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{
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sc.MustGetString ();
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if (sc.Compare("none"))
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{
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v = -1;
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}
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else if (sc.Compare(""))
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{
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v = 0;
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}
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else
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{
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int c = V_GetColor (NULL, sc.String);
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// 0 needs to be the default so we have to mark the color.
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v = MAKEARGB(1, RPART(c), GPART(c), BPART(c));
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}
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ExpVal val;
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val.Type = TypeColor;
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val.Int = v;
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x = new FxConstant(val, sc);
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}
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else if (type == TypeState)
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{
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// This forces quotation marks around the state name.
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sc.MustGetToken(TK_StringConst);
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if (sc.String[0] == 0 || sc.Compare("None"))
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{
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x = new FxConstant((FState*)NULL, sc);
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}
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else if (sc.Compare("*"))
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{
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if (constant)
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{
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x = new FxConstant((FState*)(intptr_t)-1, sc);
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}
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else sc.ScriptError("Invalid state name '*'");
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}
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else
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{
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x = new FxMultiNameState(sc.String, sc);
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}
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}
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else if (type->GetClass() == RUNTIME_CLASS(PClassPointer))
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{ // Actor name
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sc.SetEscape(true);
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sc.MustGetString();
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sc.SetEscape(false);
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x = new FxClassTypeCast(static_cast<PClassPointer *>(type)->ClassRestriction, new FxConstant(FName(sc.String), sc));
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}
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else
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{
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assert(false && "Unknown parameter type");
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x = NULL;
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}
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return x;
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}
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//==========================================================================
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//
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// ActorConstDef
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//
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// Parses a constant definition.
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//
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//==========================================================================
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static void ParseConstant (FScanner &sc, PSymbolTable *symt, PClassActor *cls)
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{
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// Read the type and make sure it's int or float.
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if (sc.CheckToken(TK_Int) || sc.CheckToken(TK_Float))
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{
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int type = sc.TokenType;
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sc.MustGetToken(TK_Identifier);
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FName symname = sc.String;
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sc.MustGetToken('=');
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FxExpression *expr = ParseExpression (sc, cls, true);
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sc.MustGetToken(';');
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if (!expr->isConstant())
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{
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sc.ScriptMessage("Constant definition is not a constant");
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FScriptPosition::ErrorCounter++;
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}
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else
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{
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ExpVal val = static_cast<FxConstant *>(expr)->GetValue();
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delete expr;
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PSymbolConstNumeric *sym;
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if (type == TK_Int)
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{
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sym = new PSymbolConstNumeric(symname, TypeSInt32);
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sym->Value = val.GetInt();
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}
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else
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{
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sym = new PSymbolConstNumeric(symname, TypeFloat64);
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sym->Float = val.GetFloat();
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}
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if (symt->AddSymbol (sym) == NULL)
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{
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delete sym;
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sc.ScriptMessage ("'%s' is already defined in '%s'.",
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symname.GetChars(), cls? cls->TypeName.GetChars() : "Global");
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FScriptPosition::ErrorCounter++;
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}
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}
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}
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else
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{
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sc.ScriptMessage("Numeric type required for constant");
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FScriptPosition::ErrorCounter++;
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}
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}
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//==========================================================================
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//
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// ActorEnumDef
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//
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// Parses an enum definition.
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//
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//==========================================================================
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static void ParseEnum (FScanner &sc, PSymbolTable *symt, PClassActor *cls)
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{
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int currvalue = 0;
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sc.MustGetToken('{');
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while (!sc.CheckToken('}'))
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{
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sc.MustGetToken(TK_Identifier);
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FName symname = sc.String;
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if (sc.CheckToken('='))
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{
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FxExpression *expr = ParseExpression (sc, cls, true);
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if (!expr->isConstant())
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{
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sc.ScriptMessage("'%s' must be constant", symname.GetChars());
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FScriptPosition::ErrorCounter++;
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}
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else
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{
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currvalue = static_cast<FxConstant *>(expr)->GetValue().GetInt();
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}
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delete expr;
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}
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PSymbolConstNumeric *sym = new PSymbolConstNumeric(symname, TypeSInt32);
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sym->Value = currvalue;
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if (symt->AddSymbol (sym) == NULL)
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{
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delete sym;
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sc.ScriptMessage ("'%s' is already defined in '%s'.",
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symname.GetChars(), cls? cls->TypeName.GetChars() : "Global");
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FScriptPosition::ErrorCounter++;
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}
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// This allows a comma after the last value but doesn't enforce it.
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if (sc.CheckToken('}')) break;
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sc.MustGetToken(',');
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currvalue++;
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}
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sc.MustGetToken(';');
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}
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//==========================================================================
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//
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// ParseArgListDef
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//
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// Parses the argument list from a function declaration.
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//
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//==========================================================================
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static void ParseArgListDef(FScanner &sc, PClassActor *cls,
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TArray<PType *> &args, TArray<DWORD> &argflags)
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{
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if (!sc.CheckToken(')'))
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{
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while (sc.TokenType != ')')
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{
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int flags = 0;
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PType *type = NULL;
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PClass *restrict = NULL;
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// Retrieve flags before type name
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for (;;)
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{
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if (sc.CheckToken(TK_Coerce) || sc.CheckToken(TK_Native))
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{
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}
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else
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{
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break;
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}
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}
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// Read the variable type
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sc.MustGetAnyToken();
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switch (sc.TokenType)
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{
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case TK_Bool:
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case TK_Int:
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type = TypeSInt32;
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break;
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case TK_Float:
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type = TypeFloat64;
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break;
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case TK_Sound: type = TypeSound; break;
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case TK_String: type = TypeString; break;
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case TK_Name: type = TypeName; break;
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case TK_State: type = TypeState; break;
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case TK_Color: type = TypeColor; break;
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case TK_Class:
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sc.MustGetToken('<');
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sc.MustGetToken(TK_Identifier); // Get class name
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restrict = PClass::FindClass(sc.String);
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if (restrict == NULL)
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{
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sc.ScriptMessage("Unknown class type %s", sc.String);
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FScriptPosition::ErrorCounter++;
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}
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else
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{
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type = NewClassPointer(restrict);
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}
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sc.MustGetToken('>');
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break;
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case TK_Ellipsis:
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// Making the final type NULL signals a varargs function.
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type = NULL;
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sc.MustGetToken(')');
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sc.UnGet();
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break;
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default:
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sc.ScriptMessage ("Unknown variable type %s", sc.TokenName(sc.TokenType, sc.String).GetChars());
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type = TypeSInt32;
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FScriptPosition::ErrorCounter++;
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break;
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}
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// Read the optional variable name
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if (!sc.CheckToken(',') && !sc.CheckToken(')'))
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{
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sc.MustGetToken(TK_Identifier);
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}
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else
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{
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sc.UnGet();
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}
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if (sc.CheckToken('='))
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{
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flags |= VARF_Optional;
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FxExpression *def = ParseParameter(sc, cls, type, true);
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delete def;
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}
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args.Push(type);
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argflags.Push(flags);
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sc.MustGetAnyToken();
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if (sc.TokenType != ',' && sc.TokenType != ')')
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{
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sc.ScriptError ("Expected ',' or ')' but got %s instead", sc.TokenName(sc.TokenType, sc.String).GetChars());
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}
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}
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}
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sc.MustGetToken(';');
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}
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//==========================================================================
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//
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// SetImplicitArgs
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//
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// Adds the parameters implied by the function flags.
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//
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//==========================================================================
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void SetImplicitArgs(TArray<PType *> *args, TArray<DWORD> *argflags, PClassActor *cls, DWORD funcflags)
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{
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// Must be called before adding any other arguments.
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assert(args == NULL || args->Size() == 0);
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assert(argflags == NULL || argflags->Size() == 0);
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if (funcflags & VARF_Method)
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{
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// implied self pointer
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if (args != NULL) args->Push(NewClassPointer(cls));
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if (argflags != NULL) argflags->Push(0);
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}
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if (funcflags & VARF_Action)
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{
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// implied stateowner and callingstate pointers
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if (args != NULL)
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{
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args->Push(NewClassPointer(RUNTIME_CLASS(AActor)));
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args->Push(TypeState);
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}
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if (argflags != NULL)
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{
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argflags->Push(0);
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argflags->Push(0);
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}
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}
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}
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//==========================================================================
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//
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// ParseFunctionDef
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//
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// Parses a native function's parameters and adds it to the class,
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// if possible.
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//
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//==========================================================================
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void ParseFunctionDef(FScanner &sc, PClassActor *cls, FName funcname,
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TArray<PType *> &rets, DWORD funcflags)
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{
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assert(cls != NULL);
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|
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const AFuncDesc *afd;
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TArray<PType *> args;
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TArray<DWORD> argflags;
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|
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afd = FindFunction(funcname);
|
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if (afd == NULL)
|
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{
|
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sc.ScriptMessage ("The function '%s' has not been exported from the executable.", funcname.GetChars());
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FScriptPosition::ErrorCounter++;
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}
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sc.MustGetToken('(');
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|
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SetImplicitArgs(&args, &argflags, cls, funcflags);
|
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ParseArgListDef(sc, cls, args, argflags);
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|
|
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if (afd != NULL)
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{
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PFunction *sym = new PFunction(funcname);
|
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sym->AddVariant(NewPrototype(rets, args), argflags, *(afd->VMPointer));
|
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sym->Flags = funcflags;
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if (cls->Symbols.AddSymbol(sym) == NULL)
|
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{
|
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delete sym;
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sc.ScriptMessage ("'%s' is already defined in class '%s'.",
|
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funcname.GetChars(), cls->TypeName.GetChars());
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// ParseNativeFunction
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|
//
|
|
// Parses a non-action function declaration.
|
|
//
|
|
//==========================================================================
|
|
|
|
static void ParseNativeFunction(FScanner &sc, PClassActor *cls)
|
|
{
|
|
TArray<PType *> rets(1);
|
|
|
|
if (sc.LumpNum == -1 || Wads.GetLumpFile(sc.LumpNum) > 0)
|
|
{
|
|
sc.ScriptMessage ("functions can only be declared by native actors!");
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
|
|
// Read the type and make sure it's int or float.
|
|
sc.MustGetAnyToken();
|
|
switch (sc.TokenType)
|
|
{
|
|
case TK_Int:
|
|
case TK_Bool:
|
|
rets.Push(TypeSInt32);
|
|
break;
|
|
|
|
case TK_Float:
|
|
rets.Push(TypeFloat64);
|
|
break;
|
|
|
|
case TK_Angle_t:
|
|
rets.Push(TypeAngle);
|
|
break;
|
|
|
|
case TK_Fixed_t:
|
|
rets.Push(TypeFixed);
|
|
break;
|
|
|
|
case TK_State:
|
|
rets.Push(TypeState);
|
|
break;
|
|
|
|
case TK_Identifier:
|
|
rets.Push(NewPointer(RUNTIME_CLASS(DObject)));
|
|
// Todo: Object type
|
|
sc.ScriptError("Object type variables not implemented yet!");
|
|
break;
|
|
|
|
default:
|
|
sc.ScriptError("Invalid return type %s", sc.String);
|
|
return;
|
|
}
|
|
sc.MustGetToken(TK_Identifier);
|
|
ParseFunctionDef(sc, cls, sc.String, rets, VARF_Method);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// ParseUserVariable
|
|
//
|
|
// Parses a user variable declaration.
|
|
//
|
|
//==========================================================================
|
|
|
|
static void ParseUserVariable (FScanner &sc, PSymbolTable *symt, PClassActor *cls)
|
|
{
|
|
PType *type;
|
|
int maxelems = 1;
|
|
|
|
// Only non-native classes may have user variables.
|
|
if (!cls->bRuntimeClass)
|
|
{
|
|
sc.ScriptError("Native classes may not have user variables");
|
|
}
|
|
|
|
// Read the type and make sure it's acceptable.
|
|
sc.MustGetAnyToken();
|
|
if (sc.TokenType != TK_Int && sc.TokenType != TK_Float)
|
|
{
|
|
sc.ScriptMessage("User variables must be of type 'int' or 'float'");
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
type = sc.TokenType == TK_Int ? (PType *)TypeSInt32 : (PType *)TypeFloat64;
|
|
|
|
sc.MustGetToken(TK_Identifier);
|
|
// For now, restrict user variables to those that begin with "user_" to guarantee
|
|
// no clashes with internal member variable names.
|
|
if (sc.StringLen < 6 || strnicmp("user_", sc.String, 5) != 0)
|
|
{
|
|
sc.ScriptMessage("User variable names must begin with \"user_\"");
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
|
|
FName symname = sc.String;
|
|
|
|
// We must ensure that we do not define duplicates, even when they come from a parent table.
|
|
if (symt->FindSymbol(symname, true) != NULL)
|
|
{
|
|
sc.ScriptMessage ("'%s' is already defined in '%s' or one of its ancestors.",
|
|
symname.GetChars(), cls ? cls->TypeName.GetChars() : "Global");
|
|
FScriptPosition::ErrorCounter++;
|
|
return;
|
|
}
|
|
|
|
if (sc.CheckToken('['))
|
|
{
|
|
FxExpression *expr = ParseExpression(sc, cls, true);
|
|
if (!expr->isConstant())
|
|
{
|
|
sc.ScriptMessage("Array size must be a constant");
|
|
FScriptPosition::ErrorCounter++;
|
|
maxelems = 1;
|
|
}
|
|
else
|
|
{
|
|
maxelems = static_cast<FxConstant *>(expr)->GetValue().GetInt();
|
|
}
|
|
sc.MustGetToken(']');
|
|
if (maxelems <= 0)
|
|
{
|
|
sc.ScriptMessage("Array size must be positive");
|
|
FScriptPosition::ErrorCounter++;
|
|
maxelems = 1;
|
|
}
|
|
type = NewArray(type, maxelems);
|
|
}
|
|
sc.MustGetToken(';');
|
|
|
|
PField *sym = new PField(symname, type, 0);
|
|
sym->Offset = cls->Extend(type);
|
|
if (symt->AddSymbol(sym) == NULL)
|
|
{
|
|
sc.ScriptMessage ("'%s' is already defined in '%s'.",
|
|
symname.GetChars(), cls ? cls->TypeName.GetChars() : "Global");
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Parses a flag name
|
|
//
|
|
//==========================================================================
|
|
static void ParseActorFlag (FScanner &sc, Baggage &bag, int mod)
|
|
{
|
|
sc.MustGetString ();
|
|
|
|
FString part1 = sc.String;
|
|
const char *part2 = NULL;
|
|
if (sc.CheckString ("."))
|
|
{
|
|
sc.MustGetString ();
|
|
part2 = sc.String;
|
|
}
|
|
HandleActorFlag(sc, bag, part1, part2, mod);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Processes a flag. Also used by olddecorations.cpp
|
|
//
|
|
//==========================================================================
|
|
void HandleActorFlag(FScanner &sc, Baggage &bag, const char *part1, const char *part2, int mod)
|
|
{
|
|
FFlagDef *fd;
|
|
|
|
if ( (fd = FindFlag (bag.Info, part1, part2)) )
|
|
{
|
|
AActor *defaults = (AActor*)bag.Info->Defaults;
|
|
if (fd->structoffset == -1) // this is a deprecated flag that has been changed into a real property
|
|
{
|
|
HandleDeprecatedFlags(defaults, bag.Info, mod=='+', fd->flagbit);
|
|
}
|
|
else
|
|
{
|
|
ModActorFlag(defaults, fd, mod == '+');
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (part2 == NULL)
|
|
{
|
|
sc.ScriptMessage("\"%s\" is an unknown flag\n", part1);
|
|
}
|
|
else
|
|
{
|
|
sc.ScriptMessage("\"%s.%s\" is an unknown flag\n", part1, part2);
|
|
}
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// [MH] parses a morph style expression
|
|
//
|
|
//==========================================================================
|
|
|
|
struct FParseValue
|
|
{
|
|
const char *Name;
|
|
int Flag;
|
|
};
|
|
|
|
int ParseFlagExpressionString(FScanner &sc, const FParseValue *vals)
|
|
{
|
|
// May be given flags by number...
|
|
if (sc.CheckNumber())
|
|
{
|
|
sc.MustGetNumber();
|
|
return sc.Number;
|
|
}
|
|
|
|
// ... else should be flags by name.
|
|
// NOTE: Later this should be removed and a normal expression used.
|
|
// The current DECORATE parser can't handle this though.
|
|
bool gotparen = sc.CheckString("(");
|
|
int style = 0;
|
|
do
|
|
{
|
|
sc.MustGetString();
|
|
style |= vals[sc.MustMatchString(&vals->Name, sizeof (*vals))].Flag;
|
|
}
|
|
while (sc.CheckString("|"));
|
|
if (gotparen)
|
|
{
|
|
sc.MustGetStringName(")");
|
|
}
|
|
|
|
return style;
|
|
}
|
|
|
|
|
|
|
|
static int ParseMorphStyle (FScanner &sc)
|
|
{
|
|
static const FParseValue morphstyles[]={
|
|
{ "MRF_ADDSTAMINA", MORPH_ADDSTAMINA},
|
|
{ "MRF_FULLHEALTH", MORPH_FULLHEALTH},
|
|
{ "MRF_UNDOBYTOMEOFPOWER", MORPH_UNDOBYTOMEOFPOWER},
|
|
{ "MRF_UNDOBYCHAOSDEVICE", MORPH_UNDOBYCHAOSDEVICE},
|
|
{ "MRF_FAILNOTELEFRAG", MORPH_FAILNOTELEFRAG},
|
|
{ "MRF_FAILNOLAUGH", MORPH_FAILNOLAUGH},
|
|
{ "MRF_WHENINVULNERABLE", MORPH_WHENINVULNERABLE},
|
|
{ "MRF_LOSEACTUALWEAPON", MORPH_LOSEACTUALWEAPON},
|
|
{ "MRF_NEWTIDBEHAVIOUR", MORPH_NEWTIDBEHAVIOUR},
|
|
{ "MRF_UNDOBYDEATH", MORPH_UNDOBYDEATH},
|
|
{ "MRF_UNDOBYDEATHFORCED", MORPH_UNDOBYDEATHFORCED},
|
|
{ "MRF_UNDOBYDEATHSAVES", MORPH_UNDOBYDEATHSAVES},
|
|
{ "MRF_UNDOALWAYS", MORPH_UNDOALWAYS },
|
|
{ NULL, 0 }
|
|
};
|
|
|
|
return ParseFlagExpressionString(sc, morphstyles);
|
|
}
|
|
|
|
static int ParseThingActivation (FScanner &sc)
|
|
{
|
|
static const FParseValue activationstyles[]={
|
|
|
|
{ "THINGSPEC_Default", THINGSPEC_Default},
|
|
{ "THINGSPEC_ThingActs", THINGSPEC_ThingActs},
|
|
{ "THINGSPEC_ThingTargets", THINGSPEC_ThingTargets},
|
|
{ "THINGSPEC_TriggerTargets", THINGSPEC_TriggerTargets},
|
|
{ "THINGSPEC_MonsterTrigger", THINGSPEC_MonsterTrigger},
|
|
{ "THINGSPEC_MissileTrigger", THINGSPEC_MissileTrigger},
|
|
{ "THINGSPEC_ClearSpecial", THINGSPEC_ClearSpecial},
|
|
{ "THINGSPEC_NoDeathSpecial", THINGSPEC_NoDeathSpecial},
|
|
{ "THINGSPEC_TriggerActs", THINGSPEC_TriggerActs},
|
|
{ "THINGSPEC_Activate", THINGSPEC_Activate},
|
|
{ "THINGSPEC_Deactivate", THINGSPEC_Deactivate},
|
|
{ "THINGSPEC_Switch", THINGSPEC_Switch},
|
|
{ NULL, 0 }
|
|
};
|
|
|
|
return ParseFlagExpressionString(sc, activationstyles);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// For getting a state address from the parent
|
|
// No attempts have been made to add new functionality here
|
|
// This is strictly for keeping compatibility with old WADs!
|
|
//
|
|
//==========================================================================
|
|
|
|
static FState *CheckState(FScanner &sc, PClass *type)
|
|
{
|
|
int v = 0;
|
|
|
|
if (sc.GetString() && !sc.Crossed)
|
|
{
|
|
if (sc.Compare("0")) return NULL;
|
|
else if (sc.Compare("PARENT"))
|
|
{
|
|
FState *state = NULL;
|
|
sc.MustGetString();
|
|
|
|
PClassActor *info = dyn_cast<PClassActor>(type->ParentClass);
|
|
|
|
if (info != NULL)
|
|
{
|
|
state = info->FindState(FName(sc.String));
|
|
}
|
|
|
|
if (sc.GetString ())
|
|
{
|
|
if (sc.Compare ("+"))
|
|
{
|
|
sc.MustGetNumber ();
|
|
v = sc.Number;
|
|
}
|
|
else
|
|
{
|
|
sc.UnGet ();
|
|
}
|
|
}
|
|
|
|
if (state == NULL && v==0)
|
|
{
|
|
return NULL;
|
|
}
|
|
if (v != 0 && state==NULL)
|
|
{
|
|
sc.ScriptMessage("Attempt to get invalid state from actor %s\n", type->ParentClass->TypeName.GetChars());
|
|
FScriptPosition::ErrorCounter++;
|
|
return NULL;
|
|
}
|
|
state += v;
|
|
return state;
|
|
}
|
|
else
|
|
{
|
|
sc.ScriptMessage("Invalid state assignment");
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Parses an actor property's parameters and calls the handler
|
|
//
|
|
//==========================================================================
|
|
|
|
static bool ParsePropertyParams(FScanner &sc, FPropertyInfo *prop, AActor *defaults, Baggage &bag)
|
|
{
|
|
static TArray<FPropParam> params;
|
|
static TArray<FString> strings;
|
|
|
|
params.Clear();
|
|
strings.Clear();
|
|
params.Reserve(1);
|
|
params[0].i = 0;
|
|
if (prop->params[0] != '0')
|
|
{
|
|
const char * p = prop->params;
|
|
bool nocomma;
|
|
bool optcomma;
|
|
while (*p)
|
|
{
|
|
FPropParam conv;
|
|
FPropParam pref;
|
|
|
|
nocomma = false;
|
|
conv.s = NULL;
|
|
pref.s = NULL;
|
|
pref.i = -1;
|
|
switch ((*p) & 223)
|
|
{
|
|
case 'X': // Expression in parentheses or number.
|
|
{
|
|
FxExpression *x = NULL;
|
|
|
|
if (sc.CheckString ("("))
|
|
{
|
|
x = new FxDamageValue(new FxIntCast(ParseExpression(sc, bag.Info)), true);
|
|
sc.MustGetStringName(")");
|
|
}
|
|
else
|
|
{
|
|
sc.MustGetNumber();
|
|
if (sc.Number != 0)
|
|
{
|
|
x = new FxDamageValue(new FxConstant(sc.Number, bag.ScriptPosition), false);
|
|
}
|
|
}
|
|
conv.exp = x;
|
|
params.Push(conv);
|
|
}
|
|
break;
|
|
|
|
case 'I':
|
|
sc.MustGetNumber();
|
|
conv.i = sc.Number;
|
|
break;
|
|
|
|
case 'F':
|
|
sc.MustGetFloat();
|
|
conv.d = sc.Float;
|
|
break;
|
|
|
|
case 'Z': // an optional string. Does not allow any numerical value.
|
|
if (sc.CheckFloat())
|
|
{
|
|
nocomma = true;
|
|
sc.UnGet();
|
|
break;
|
|
}
|
|
// fall through
|
|
|
|
case 'S':
|
|
sc.MustGetString();
|
|
conv.s = strings[strings.Reserve(1)] = sc.String;
|
|
break;
|
|
|
|
case 'T':
|
|
sc.MustGetString();
|
|
conv.s = strings[strings.Reserve(1)] = strbin1(sc.String);
|
|
break;
|
|
|
|
case 'C':
|
|
if (sc.CheckNumber ())
|
|
{
|
|
int R, G, B;
|
|
R = clamp (sc.Number, 0, 255);
|
|
sc.CheckString (",");
|
|
sc.MustGetNumber ();
|
|
G = clamp (sc.Number, 0, 255);
|
|
sc.CheckString (",");
|
|
sc.MustGetNumber ();
|
|
B = clamp (sc.Number, 0, 255);
|
|
conv.i = MAKERGB(R, G, B);
|
|
pref.i = 0;
|
|
}
|
|
else
|
|
{
|
|
sc.MustGetString ();
|
|
conv.s = strings[strings.Reserve(1)] = sc.String;
|
|
pref.i = 1;
|
|
}
|
|
break;
|
|
|
|
case 'M': // special case. An expression-aware parser will not need this.
|
|
conv.i = ParseMorphStyle(sc);
|
|
break;
|
|
|
|
case 'N': // special case. An expression-aware parser will not need this.
|
|
conv.i = ParseThingActivation(sc);
|
|
break;
|
|
|
|
case 'L': // Either a number or a list of strings
|
|
if (sc.CheckNumber())
|
|
{
|
|
pref.i = 0;
|
|
conv.i = sc.Number;
|
|
}
|
|
else
|
|
{
|
|
pref.i = 1;
|
|
params.Push(pref);
|
|
params[0].i++;
|
|
|
|
do
|
|
{
|
|
sc.MustGetString ();
|
|
conv.s = strings[strings.Reserve(1)] = sc.String;
|
|
params.Push(conv);
|
|
params[0].i++;
|
|
}
|
|
while (sc.CheckString(","));
|
|
goto endofparm;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
assert(false);
|
|
break;
|
|
|
|
}
|
|
if (pref.i != -1)
|
|
{
|
|
params.Push(pref);
|
|
params[0].i++;
|
|
}
|
|
params.Push(conv);
|
|
params[0].i++;
|
|
endofparm:
|
|
p++;
|
|
// Hack for some properties that have to allow comma less
|
|
// parameter lists for compatibility.
|
|
if ((optcomma = (*p == '_')))
|
|
p++;
|
|
|
|
if (nocomma)
|
|
{
|
|
continue;
|
|
}
|
|
else if (*p == 0)
|
|
{
|
|
break;
|
|
}
|
|
else if (*p >= 'a')
|
|
{
|
|
if (!sc.CheckString(","))
|
|
{
|
|
if (optcomma)
|
|
{
|
|
if (!sc.CheckFloat()) break;
|
|
else sc.UnGet();
|
|
}
|
|
else break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!optcomma) sc.MustGetStringName(",");
|
|
else sc.CheckString(",");
|
|
}
|
|
}
|
|
}
|
|
// call the handler
|
|
try
|
|
{
|
|
prop->Handler(defaults, bag.Info, bag, ¶ms[0]);
|
|
}
|
|
catch (CRecoverableError &error)
|
|
{
|
|
sc.ScriptError("%s", error.GetMessage());
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Parses an actor property
|
|
//
|
|
//==========================================================================
|
|
|
|
static void ParseActorProperty(FScanner &sc, Baggage &bag)
|
|
{
|
|
static const char *statenames[] = {
|
|
"Spawn", "See", "Melee", "Missile", "Pain", "Death", "XDeath", "Burn",
|
|
"Ice", "Raise", "Crash", "Crush", "Wound", "Disintegrate", "Heal", NULL };
|
|
|
|
strlwr (sc.String);
|
|
|
|
FString propname = sc.String;
|
|
|
|
if (sc.CheckString ("."))
|
|
{
|
|
sc.MustGetString ();
|
|
propname += '.';
|
|
strlwr (sc.String);
|
|
propname += sc.String;
|
|
}
|
|
else
|
|
{
|
|
sc.UnGet ();
|
|
}
|
|
|
|
FPropertyInfo *prop = FindProperty(propname);
|
|
|
|
if (prop != NULL)
|
|
{
|
|
if (bag.Info->IsDescendantOf(*prop->cls))
|
|
{
|
|
ParsePropertyParams(sc, prop, (AActor *)bag.Info->Defaults, bag);
|
|
}
|
|
else
|
|
{
|
|
sc.ScriptMessage("\"%s\" requires an actor of type \"%s\"\n", propname.GetChars(), (*prop->cls)->TypeName.GetChars());
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
}
|
|
else if (MatchString(propname, statenames) != -1)
|
|
{
|
|
bag.statedef.SetStateLabel(propname, CheckState (sc, bag.Info));
|
|
}
|
|
else
|
|
{
|
|
sc.ScriptError("\"%s\" is an unknown actor property\n", propname.GetChars());
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// ActorActionDef
|
|
//
|
|
// Parses an action function definition. A lot of this is essentially
|
|
// documentation in the declaration for when I have a proper language
|
|
// ready.
|
|
//
|
|
//==========================================================================
|
|
|
|
static void ParseActionDef (FScanner &sc, PClassActor *cls)
|
|
{
|
|
unsigned int error = 0;
|
|
FName funcname;
|
|
TArray<PType *> rets;
|
|
|
|
if (sc.LumpNum == -1 || Wads.GetLumpFile(sc.LumpNum) > 0)
|
|
{
|
|
sc.ScriptMessage ("Action functions can only be imported by internal class and actor definitions!");
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
|
|
sc.MustGetToken(TK_Native);
|
|
// check for a return value
|
|
do
|
|
{
|
|
if (sc.CheckToken(TK_Int) || sc.CheckToken(TK_Bool))
|
|
{
|
|
rets.Push(TypeSInt32);
|
|
}
|
|
else if (sc.CheckToken(TK_State))
|
|
{
|
|
rets.Push(TypeState);
|
|
}
|
|
else if (sc.CheckToken(TK_Float))
|
|
{
|
|
rets.Push(TypeFloat64);
|
|
}
|
|
}
|
|
while (sc.CheckToken(','));
|
|
sc.MustGetToken(TK_Identifier);
|
|
funcname = sc.String;
|
|
ParseFunctionDef(sc, cls, funcname, rets, VARF_Method | VARF_Action);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Starts a new actor definition
|
|
//
|
|
//==========================================================================
|
|
static PClassActor *ParseActorHeader(FScanner &sc, Baggage *bag)
|
|
{
|
|
FName typeName;
|
|
FName parentName;
|
|
FName replaceName;
|
|
bool native = false;
|
|
int DoomEdNum = -1;
|
|
|
|
// Get actor name
|
|
sc.MustGetString();
|
|
|
|
char *colon = strchr(sc.String, ':');
|
|
if (colon != NULL)
|
|
{
|
|
*colon++ = 0;
|
|
}
|
|
|
|
typeName = sc.String;
|
|
|
|
// Do some tweaking so that a definition like 'Actor:Parent' which is read as a single token is recognized as well
|
|
// without having resort to C-mode (which disallows periods in actor names.)
|
|
if (colon == NULL)
|
|
{
|
|
sc.MustGetString ();
|
|
if (sc.String[0]==':')
|
|
{
|
|
colon = sc.String + 1;
|
|
}
|
|
}
|
|
|
|
if (colon != NULL)
|
|
{
|
|
if (colon[0] == 0)
|
|
{
|
|
sc.MustGetString ();
|
|
colon = sc.String;
|
|
}
|
|
}
|
|
|
|
if (colon == NULL)
|
|
{
|
|
sc.UnGet();
|
|
}
|
|
|
|
parentName = colon;
|
|
|
|
// Check for "replaces"
|
|
if (sc.CheckString ("replaces"))
|
|
{
|
|
// Get actor name
|
|
sc.MustGetString ();
|
|
replaceName = sc.String;
|
|
|
|
if (replaceName == typeName)
|
|
{
|
|
sc.ScriptMessage ("Cannot replace class %s with itself", typeName.GetChars());
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
}
|
|
|
|
// Now, after the actor names have been parsed, it is time to switch to C-mode
|
|
// for the rest of the actor definition.
|
|
sc.SetCMode (true);
|
|
if (sc.CheckNumber())
|
|
{
|
|
if (sc.Number>=-1 && sc.Number<32768) DoomEdNum = sc.Number;
|
|
else
|
|
{
|
|
// does not need to be fatal.
|
|
sc.ScriptMessage ("DoomEdNum must be in the range [-1,32767]");
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
}
|
|
|
|
if (sc.CheckString("native"))
|
|
{
|
|
native = true;
|
|
}
|
|
|
|
try
|
|
{
|
|
PClassActor *info = CreateNewActor(sc, typeName, parentName, native);
|
|
info->DoomEdNum = DoomEdNum > 0 ? DoomEdNum : -1;
|
|
info->SourceLumpName = Wads.GetLumpFullPath(sc.LumpNum);
|
|
|
|
SetReplacement(sc, info, replaceName);
|
|
|
|
ResetBaggage (bag, info == RUNTIME_CLASS(AActor) ? NULL : static_cast<PClassActor *>(info->ParentClass));
|
|
bag->Info = info;
|
|
bag->Lumpnum = sc.LumpNum;
|
|
#ifdef _DEBUG
|
|
bag->ClassName = typeName;
|
|
#endif
|
|
return info;
|
|
}
|
|
catch (CRecoverableError &err)
|
|
{
|
|
sc.ScriptError("%s", err.GetMessage());
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Reads an actor definition
|
|
//
|
|
//==========================================================================
|
|
static void ParseActor(FScanner &sc)
|
|
{
|
|
PClassActor *info = NULL;
|
|
Baggage bag;
|
|
|
|
info = ParseActorHeader(sc, &bag);
|
|
sc.MustGetToken('{');
|
|
while (sc.MustGetAnyToken(), sc.TokenType != '}')
|
|
{
|
|
switch (sc.TokenType)
|
|
{
|
|
case TK_Action:
|
|
ParseActionDef (sc, info);
|
|
break;
|
|
|
|
case TK_Const:
|
|
ParseConstant (sc, &info->Symbols, info);
|
|
break;
|
|
|
|
case TK_Enum:
|
|
ParseEnum (sc, &info->Symbols, info);
|
|
break;
|
|
|
|
case TK_Native:
|
|
ParseNativeFunction (sc, info);
|
|
break;
|
|
|
|
case TK_Var:
|
|
ParseUserVariable (sc, &info->Symbols, info);
|
|
break;
|
|
|
|
case TK_Identifier:
|
|
ParseActorProperty(sc, bag);
|
|
break;
|
|
|
|
case TK_States:
|
|
if (bag.StateSet)
|
|
{
|
|
sc.ScriptMessage("'%s' contains multiple state declarations", bag.Info->TypeName.GetChars());
|
|
FScriptPosition::ErrorCounter++;
|
|
}
|
|
ParseStates(sc, bag.Info, (AActor *)bag.Info->Defaults, bag);
|
|
bag.StateSet = true;
|
|
break;
|
|
|
|
case '+':
|
|
case '-':
|
|
ParseActorFlag(sc, bag, sc.TokenType);
|
|
break;
|
|
|
|
default:
|
|
sc.ScriptError("Unexpected '%s' in definition of '%s'", sc.String, bag.Info->TypeName.GetChars());
|
|
break;
|
|
}
|
|
}
|
|
FinishActor(sc, info, bag);
|
|
sc.SetCMode (false);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// Reads a damage definition
|
|
//
|
|
//==========================================================================
|
|
|
|
static void ParseDamageDefinition(FScanner &sc)
|
|
{
|
|
sc.SetCMode (true); // This may be 100% irrelevant for such a simple syntax, but I don't know
|
|
|
|
// Get DamageType
|
|
|
|
sc.MustGetString();
|
|
FName damageType = sc.String;
|
|
|
|
DamageTypeDefinition dtd;
|
|
|
|
sc.MustGetToken('{');
|
|
while (sc.MustGetAnyToken(), sc.TokenType != '}')
|
|
{
|
|
if (sc.Compare("FACTOR"))
|
|
{
|
|
sc.MustGetFloat();
|
|
dtd.DefaultFactor = FLOAT2FIXED(sc.Float);
|
|
if (!dtd.DefaultFactor) dtd.ReplaceFactor = true; // Multiply by 0 yields 0: FixedMul(damage, FixedMul(factor, 0)) is more wasteful than FixedMul(factor, 0)
|
|
}
|
|
else if (sc.Compare("REPLACEFACTOR"))
|
|
{
|
|
dtd.ReplaceFactor = true;
|
|
}
|
|
else if (sc.Compare("NOARMOR"))
|
|
{
|
|
dtd.NoArmor = true;
|
|
}
|
|
else
|
|
{
|
|
sc.ScriptError("Unexpected data (%s) in damagetype definition.", sc.String);
|
|
}
|
|
}
|
|
|
|
dtd.Apply(damageType);
|
|
|
|
sc.SetCMode (false); // (set to true earlier in function)
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// ParseDecorate
|
|
//
|
|
// Parses a single DECORATE lump
|
|
//
|
|
//==========================================================================
|
|
|
|
void ParseDecorate (FScanner &sc)
|
|
{
|
|
// Get actor class name.
|
|
for(;;)
|
|
{
|
|
FScanner::SavedPos pos = sc.SavePos();
|
|
if (!sc.GetToken ())
|
|
{
|
|
return;
|
|
}
|
|
switch (sc.TokenType)
|
|
{
|
|
case TK_Include:
|
|
{
|
|
sc.MustGetString();
|
|
// This check needs to remain overridable for testing purposes.
|
|
if (Wads.GetLumpFile(sc.LumpNum) == 0 && !Args->CheckParm("-allowdecoratecrossincludes"))
|
|
{
|
|
int includefile = Wads.GetLumpFile(Wads.CheckNumForFullName(sc.String, true));
|
|
if (includefile != 0)
|
|
{
|
|
I_FatalError("File %s is overriding core lump %s.",
|
|
Wads.GetWadFullName(includefile), sc.String);
|
|
}
|
|
}
|
|
FScanner newscanner;
|
|
newscanner.Open(sc.String);
|
|
ParseDecorate(newscanner);
|
|
break;
|
|
}
|
|
|
|
case TK_Const:
|
|
ParseConstant (sc, &GlobalSymbols, NULL);
|
|
break;
|
|
|
|
case TK_Enum:
|
|
ParseEnum (sc, &GlobalSymbols, NULL);
|
|
break;
|
|
|
|
case ';':
|
|
// ';' is the start of a comment in the non-cmode parser which
|
|
// is used to parse parts of the DECORATE lump. If we don't add
|
|
// a check here the user will only get weird non-informative
|
|
// error messages if a semicolon is found.
|
|
sc.ScriptError("Unexpected ';'");
|
|
break;
|
|
|
|
case TK_Identifier:
|
|
// 'ACTOR' cannot be a keyword because it is also needed as a class identifier
|
|
// so let's do a special case for this.
|
|
if (sc.Compare("ACTOR"))
|
|
{
|
|
ParseActor (sc);
|
|
break;
|
|
}
|
|
else if (sc.Compare("PICKUP"))
|
|
{
|
|
ParseOldDecoration (sc, DEF_Pickup);
|
|
break;
|
|
}
|
|
else if (sc.Compare("BREAKABLE"))
|
|
{
|
|
ParseOldDecoration (sc, DEF_BreakableDecoration);
|
|
break;
|
|
}
|
|
else if (sc.Compare("PROJECTILE"))
|
|
{
|
|
ParseOldDecoration (sc, DEF_Projectile);
|
|
break;
|
|
}
|
|
else if (sc.Compare("DAMAGETYPE"))
|
|
{
|
|
ParseDamageDefinition(sc);
|
|
break;
|
|
}
|
|
default:
|
|
sc.RestorePos(pos);
|
|
ParseOldDecoration(sc, DEF_Decoration);
|
|
break;
|
|
}
|
|
}
|
|
}
|