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2dff0e7309
This gets called from several places, and the only one passing in potentially byte swapped values is P_LoadLineDefs. All other uses of this function were essentially broken on PowerPC.
507 lines
No EOL
12 KiB
C++
507 lines
No EOL
12 KiB
C++
/*
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** p_xlat.cpp
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** Translate old Doom format maps to the Hexen format
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**
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**---------------------------------------------------------------------------
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** Copyright 1998-2007 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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**
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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 "g_level.h"
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#include "p_lnspec.h"
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#include "doomdata.h"
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#include "m_swap.h"
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#include "p_spec.h"
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#include "p_local.h"
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#include "a_sharedglobal.h"
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#include "gi.h"
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#include "w_wad.h"
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#include "sc_man.h"
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#include "cmdlib.h"
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#include "g_levellocals.h"
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#include "actorinlines.h"
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#include "xlat/xlat.h"
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// define names for the TriggerType field of the general linedefs
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typedef enum
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{
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WalkOnce,
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WalkMany,
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SwitchOnce,
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SwitchMany,
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GunOnce,
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GunMany,
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PushOnce,
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PushMany,
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} triggertype_e;
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void P_TranslateLineDef (line_t *ld, maplinedef_t *mld, int lineindexforid)
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{
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uint32_t special = mld->special;
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short tag = mld->tag;
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uint32_t flags =mld->flags;
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INTBOOL passthrough = 0;
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uint32_t flags1 = flags;
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uint32_t newflags = 0;
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for(int i=0;i<16;i++)
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{
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if ((flags & (1<<i)) && LineFlagTranslations[i].ismask)
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{
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flags1 &= LineFlagTranslations[i].newvalue;
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}
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}
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for(int i=0;i<16;i++)
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{
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if ((flags1 & (1<<i)) && !LineFlagTranslations[i].ismask)
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{
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switch (LineFlagTranslations[i].newvalue)
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{
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case -1:
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passthrough = true;
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break;
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case -2:
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ld->alpha = 0.75;
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break;
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case -3:
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ld->alpha = 0.25;
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break;
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default:
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newflags |= LineFlagTranslations[i].newvalue;
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break;
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}
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}
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}
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flags = newflags;
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if (lineindexforid >= 0)
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{
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// For purposes of maintaining BOOM compatibility, each
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// line also needs to have its ID set to the same as its tag.
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// An external conversion program would need to do this more
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// intelligently.
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tagManager.AddLineID(lineindexforid, tag);
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}
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// 0 specials are never translated.
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if (special == 0)
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{
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ld->special = 0;
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ld->flags = flags;
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ld->args[0] = mld->tag;
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memset (ld->args+1, 0, sizeof(ld->args)-sizeof(ld->args[0]));
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return;
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}
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FLineTrans *linetrans = NULL;
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if (special < SimpleLineTranslations.Size()) linetrans = &SimpleLineTranslations[special];
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if (linetrans != NULL && linetrans->special != 0)
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{
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ld->special = linetrans->special;
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ld->flags = flags | ((linetrans->flags & 0x1f) << 9);
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if (linetrans->flags & 0x20) ld->flags |= ML_FIRSTSIDEONLY;
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ld->activation = 1 << GET_SPAC(ld->flags);
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if (ld->activation == SPAC_AnyCross)
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{ // this is really PTouch
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ld->activation = SPAC_Impact|SPAC_PCross;
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}
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else if (ld->activation == SPAC_Impact)
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{ // In non-UMDF maps, Impact implies PCross
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ld->activation = SPAC_Impact | SPAC_PCross;
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}
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ld->flags &= ~ML_SPAC_MASK;
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if (passthrough && ld->activation == SPAC_Use)
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{
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ld->activation = SPAC_UseThrough;
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}
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// Set special arguments.
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FXlatExprState state;
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state.tag = tag;
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state.linetype = special;
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for (int t = 0; t < LINETRANS_MAXARGS; ++t)
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{
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int arg = linetrans->args[t];
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int argop = (linetrans->flags >> (LINETRANS_TAGSHIFT + t*TAGOP_NUMBITS)) & TAGOP_MASK;
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switch (argop)
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{
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case ARGOP_Const:
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ld->args[t] = arg;
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break;
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case ARGOP_Tag:
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ld->args[t] = tag;
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break;
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case ARGOP_Expr:
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{
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int *xnode = &XlatExpressions[arg];
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state.bIsConstant = true;
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XlatExprEval[*xnode](&ld->args[t], xnode, &state);
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}
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break;
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default:
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assert(0);
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ld->args[t] = 0;
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break;
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}
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}
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if ((ld->flags & ML_SECRET) && ld->activation & (SPAC_Use|SPAC_UseThrough))
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{
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ld->flags &= ~ML_MONSTERSCANACTIVATE;
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}
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return;
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}
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for(int i=0;i<NumBoomish;i++)
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{
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FBoomTranslator *b = &Boomish[i];
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if (special >= b->FirstLinetype && special <= b->LastLinetype)
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{
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ld->special = b->NewSpecial;
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switch (special & 0x0007)
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{
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case WalkMany:
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flags |= ML_REPEAT_SPECIAL;
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case WalkOnce:
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ld->activation = SPAC_Cross;
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break;
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case SwitchMany:
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case PushMany:
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flags |= ML_REPEAT_SPECIAL;
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case SwitchOnce:
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case PushOnce:
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if (passthrough)
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ld->activation = SPAC_UseThrough;
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else
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ld->activation = SPAC_Use;
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break;
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case GunMany:
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flags |= ML_REPEAT_SPECIAL;
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case GunOnce:
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ld->activation = SPAC_Impact;
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break;
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}
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ld->args[0] = tag;
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ld->args[1] = ld->args[2] = ld->args[3] = ld->args[4] = 0;
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for(unsigned j=0; j < b->Args.Size(); j++)
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{
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FBoomArg *arg = &b->Args[j];
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int *destp;
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int flagtemp;
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uint8_t val = 0; // quiet, GCC
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bool found;
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if (arg->ArgNum < 4)
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{
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destp = &ld->args[arg->ArgNum+1];
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}
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else
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{
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flagtemp = ((flags >> 9) & 0x3f);
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destp = &flagtemp;
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}
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if (arg->ListSize == 0)
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{
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val = arg->ConstantValue;
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found = true;
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}
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else
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{
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found = false;
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for (int k = 0; k < arg->ListSize; k++)
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{
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if ((special & arg->AndValue) == arg->ResultFilter[k])
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{
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val = arg->ResultValue[k];
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found = true;
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}
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}
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}
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if (found)
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{
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if (arg->bOrExisting)
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{
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*destp |= val;
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}
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else
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{
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*destp = val;
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}
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if (arg->ArgNum == 4)
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{
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flags = (flags & ~0x7e00) | (flagtemp << 9);
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}
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}
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}
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// We treat push triggers like switch triggers with zero tags.
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if ((special & 7) == PushMany || (special & 7) == PushOnce)
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{
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if (ld->special == Generic_Door)
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{
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ld->args[2] |= 128;
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}
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else
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{
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ld->args[0] = 0;
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}
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}
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ld->flags = flags;
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if (flags & ML_MONSTERSCANACTIVATE && ld->activation == SPAC_Cross)
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{
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// In Boom anything can activate such a line so set the proper type here.
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ld->activation = SPAC_AnyCross;
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}
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return;
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}
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}
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// Don't know what to do, so 0 it
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ld->special = 0;
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ld->flags = flags;
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memset (ld->args, 0, sizeof(ld->args));
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}
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// Now that ZDoom again gives the option of using Doom's original teleport
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// behavior, only teleport dests in a sector with a 0 tag need to be
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// given a TID. And since Doom format maps don't have TIDs, we can safely
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// give them TID 1.
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void P_TranslateTeleportThings ()
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{
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AActor *dest;
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TThinkerIterator<AActor> iterator(NAME_TeleportDest);
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bool foundSomething = false;
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while ( (dest = iterator.Next()) )
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{
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if (!tagManager.SectorHasTags(dest->Sector))
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{
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dest->tid = 1;
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dest->AddToHash ();
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foundSomething = true;
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}
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}
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if (foundSomething)
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{
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for (auto &line : level.lines)
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{
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if (line.special == Teleport)
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{
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if (line.args[1] == 0)
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{
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line.args[0] = 1;
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}
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}
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else if (line.special == Teleport_NoFog)
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{
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if (line.args[2] == 0)
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{
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line.args[0] = 1;
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}
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}
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else if (line.special == Teleport_ZombieChanger)
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{
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if (line.args[1] == 0)
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{
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line.args[0] = 1;
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}
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}
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}
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}
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}
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int P_TranslateSectorSpecial (int special)
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{
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int mask = 0;
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for(int i = SectorMasks.Size()-1; i>=0; i--)
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{
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int newmask = special & SectorMasks[i].mask;
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if (newmask)
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{
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special &= ~newmask;
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if (SectorMasks[i].op == 1)
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newmask <<= SectorMasks[i].shift;
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else if (SectorMasks[i].op == -1)
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newmask >>= SectorMasks[i].shift;
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else if (SectorMasks[i].op == 0 && SectorMasks[i].shift == 1)
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newmask = 0;
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mask |= newmask;
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}
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}
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if ((unsigned)special < SectorTranslations.Size())
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{
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if (!SectorTranslations[special].bitmask_allowed && mask)
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special = 0;
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else
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special = SectorTranslations[special].newtype;
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}
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return special | mask;
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}
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static const int *Expr_Const(int *dest, const int *xnode, FXlatExprState *state)
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{
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*dest = xnode[-1];
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return xnode - 2;
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}
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static const int *Expr_Tag(int *dest, const int *xnode, FXlatExprState *state)
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{
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*dest = state->tag;
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state->bIsConstant = false;
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return xnode - 1;
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}
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static const int *Expr_Add(int *dest, const int *xnode, FXlatExprState *state)
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{
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int op1, op2;
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xnode = XlatExprEval[xnode[-1]](&op2, xnode-1, state);
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xnode = XlatExprEval[xnode[0]](&op1, xnode, state);
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*dest = op1 + op2;
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return xnode;
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}
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static const int *Expr_Sub(int *dest, const int *xnode, FXlatExprState *state)
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{
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int op1, op2;
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xnode = XlatExprEval[xnode[-1]](&op2, xnode-1, state);
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xnode = XlatExprEval[xnode[0]](&op1, xnode, state);
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*dest = op1 - op2;
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return xnode;
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}
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static const int *Expr_Mul(int *dest, const int *xnode, FXlatExprState *state)
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{
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int op1, op2;
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xnode = XlatExprEval[xnode[-1]](&op2, xnode-1, state);
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xnode = XlatExprEval[xnode[0]](&op1, xnode, state);
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*dest = op1 * op2;
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return xnode;
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}
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static void Div0Check(int &op1, int &op2, const FXlatExprState *state)
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{
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if (op2 == 0)
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{
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Printf("Xlat: Division by 0 for line type %d\n", state->linetype);
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// Set some safe values
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op1 = 0;
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op2 = 1;
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}
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}
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static const int *Expr_Div(int *dest, const int *xnode, FXlatExprState *state)
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{
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int op1, op2;
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xnode = XlatExprEval[xnode[-1]](&op2, xnode-1, state);
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xnode = XlatExprEval[xnode[0]](&op1, xnode, state);
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Div0Check(op1, op2, state);
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*dest = op1 / op2;
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return xnode;
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}
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static const int *Expr_Mod(int *dest, const int *xnode, FXlatExprState *state)
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{
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int op1, op2;
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xnode = XlatExprEval[xnode[-1]](&op2, xnode-1, state);
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xnode = XlatExprEval[xnode[0]](&op1, xnode, state);
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Div0Check(op1, op2, state);
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*dest = op1 % op2;
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return xnode;
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}
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static const int *Expr_And(int *dest, const int *xnode, FXlatExprState *state)
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{
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int op1, op2;
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xnode = XlatExprEval[xnode[-1]](&op2, xnode-1, state);
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xnode = XlatExprEval[xnode[0]](&op1, xnode, state);
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*dest = op1 & op2;
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return xnode;
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}
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static const int *Expr_Or(int *dest, const int *xnode, FXlatExprState *state)
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{
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int op1, op2;
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xnode = XlatExprEval[xnode[-1]](&op2, xnode-1, state);
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xnode = XlatExprEval[xnode[0]](&op1, xnode, state);
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*dest = op1 | op2;
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return xnode;
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}
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static const int *Expr_Xor(int *dest, const int *xnode, FXlatExprState *state)
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{
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int op1, op2;
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xnode = XlatExprEval[xnode[-1]](&op2, xnode-1, state);
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xnode = XlatExprEval[xnode[0]](&op1, xnode, state);
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*dest = op1 ^ op2;
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return xnode;
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}
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static const int *Expr_Neg(int *dest, const int *xnode, FXlatExprState *state)
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{
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int op;
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xnode = XlatExprEval[xnode[-1]](&op, xnode-1, state);
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*dest = -op;
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return xnode;
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}
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const int* (*XlatExprEval[XEXP_COUNT])(int *dest, const int *xnode, FXlatExprState *state) =
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{
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Expr_Const,
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Expr_Tag,
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Expr_Add,
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Expr_Sub,
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Expr_Mul,
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Expr_Div,
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Expr_Mod,
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Expr_And,
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Expr_Or,
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Expr_Xor,
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Expr_Neg
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}; |