mirror of
https://github.com/ZDoom/gzdoom.git
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e89a598b31
This was done mainly to reduce the amount of occurences of the word FTexture but it immediately helped detect two small and mostly harmless bugs that were found due to the stricter type checks.
743 lines
17 KiB
C++
743 lines
17 KiB
C++
/*
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** p_terrain.cpp
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** Terrain maintenance
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**
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**---------------------------------------------------------------------------
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** Copyright 1998-2006 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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// HEADER FILES ------------------------------------------------------------
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#include <string.h>
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#include "doomtype.h"
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#include "cmdlib.h"
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#include "p_terrain.h"
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#include "gi.h"
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#include "r_state.h"
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#include "w_wad.h"
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#include "sc_man.h"
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#include "s_sound.h"
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#include "p_local.h"
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#include "templates.h"
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#include "actor.h"
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#include "vm.h"
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// MACROS ------------------------------------------------------------------
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#define SET_FIELD(type,val) *((type*)((uint8_t *)fields + \
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parser[keyword].u.Offset)) = val;
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// TYPES -------------------------------------------------------------------
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enum EOuterKeywords
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{
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OUT_SPLASH,
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OUT_TERRAIN,
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OUT_FLOOR,
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OUT_IFDOOM,
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OUT_IFHERETIC,
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OUT_IFHEXEN,
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OUT_IFSTRIFE,
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OUT_ENDIF,
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OUT_DEFAULTTERRAIN
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};
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enum ETerrainKeywords
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{
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TR_CLOSE,
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TR_SPLASH,
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TR_DAMAGEAMOUNT,
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TR_DAMAGETYPE,
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TR_DAMAGETIMEMASK,
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TR_FOOTCLIP,
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TR_STEPVOLUME,
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TR_WALKINGSTEPTIME,
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TR_RUNNINGSTEPTIME,
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TR_LEFTSTEPSOUNDS,
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TR_RIGHTSTEPSOUNDS,
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TR_LIQUID,
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TR_FRICTION,
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TR_ALLOWPROTECTION
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};
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enum EGenericType
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{
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GEN_End,
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GEN_Sound,
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GEN_Byte,
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GEN_Class,
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GEN_Splash,
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GEN_Float,
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GEN_Double,
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GEN_Time,
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GEN_Bool,
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GEN_Int,
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GEN_Custom,
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};
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struct FGenericParse
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{
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EGenericType Type;
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union {
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size_t Offset;
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void (*Handler) (FScanner &sc, int type, void *fields);
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} u;
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};
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// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
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// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
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// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
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static void MakeDefaultTerrain ();
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static void ParseOuter (FScanner &sc);
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static void ParseSplash (FScanner &sc);
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static void ParseTerrain (FScanner &sc);
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static void ParseFloor (FScanner &sc);
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static int FindSplash (FName name);
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static void GenericParse (FScanner &sc, FGenericParse *parser, const char **keywords,
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void *fields, const char *type, FName name);
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static void ParseDamage (FScanner &sc, int keyword, void *fields);
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static void ParseFriction (FScanner &sc, int keyword, void *fields);
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static void ParseDefault (FScanner &sc);
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// EXTERNAL DATA DECLARATIONS ----------------------------------------------
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// PUBLIC DATA DEFINITIONS -------------------------------------------------
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FTerrainTypeArray TerrainTypes;
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TArray<FSplashDef> Splashes;
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TArray<FTerrainDef> Terrains;
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uint16_t DefaultTerrainType;
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// PRIVATE DATA DEFINITIONS ------------------------------------------------
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static const char *OuterKeywords[] =
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{
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"splash",
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"terrain",
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"floor",
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"ifdoom",
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"ifheretic",
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"ifhexen",
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"ifstrife",
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"endif",
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"defaultterrain",
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NULL
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};
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static const char *SplashKeywords[] =
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{
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"}",
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"smallsound",
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"smallclip",
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"sound",
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"smallclass",
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"baseclass",
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"chunkclass",
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"chunkxvelshift",
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"chunkyvelshift",
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"chunkzvelshift",
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"chunkbasezvel",
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"noalert",
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NULL
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};
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static const char *TerrainKeywords[] =
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{
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"}",
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"splash",
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"damageamount",
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"damagetype",
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"damagetimemask",
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"footclip",
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"stepvolume",
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"walkingsteptime",
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"runningsteptime",
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"leftstepsounds",
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"rightstepsounds",
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"liquid",
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"friction",
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"allowprotection",
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NULL
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};
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static FGenericParse SplashParser[] =
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{
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{ GEN_End, {0} },
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{ GEN_Sound, {myoffsetof(FSplashDef, SmallSplashSound)} },
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{ GEN_Double, {myoffsetof(FSplashDef, SmallSplashClip)} },
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{ GEN_Sound, {myoffsetof(FSplashDef, NormalSplashSound)} },
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{ GEN_Class, {myoffsetof(FSplashDef, SmallSplash)} },
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{ GEN_Class, {myoffsetof(FSplashDef, SplashBase)} },
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{ GEN_Class, {myoffsetof(FSplashDef, SplashChunk)} },
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{ GEN_Byte, {myoffsetof(FSplashDef, ChunkXVelShift)} },
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{ GEN_Byte, {myoffsetof(FSplashDef, ChunkYVelShift)} },
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{ GEN_Byte, {myoffsetof(FSplashDef, ChunkZVelShift)} },
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{ GEN_Double, {myoffsetof(FSplashDef, ChunkBaseZVel)} },
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{ GEN_Bool, {myoffsetof(FSplashDef, NoAlert)} }
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};
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static FGenericParse TerrainParser[] =
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{
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{ GEN_End, {0} },
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{ GEN_Splash, {myoffsetof(FTerrainDef, Splash)} },
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{ GEN_Int, {myoffsetof(FTerrainDef, DamageAmount)} },
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{ GEN_Custom, {(size_t)ParseDamage} },
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{ GEN_Int, {myoffsetof(FTerrainDef, DamageTimeMask)} },
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{ GEN_Double, {myoffsetof(FTerrainDef, FootClip)} },
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{ GEN_Float, {myoffsetof(FTerrainDef, StepVolume)} },
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{ GEN_Time, {myoffsetof(FTerrainDef, WalkStepTics)} },
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{ GEN_Time, {myoffsetof(FTerrainDef, RunStepTics)} },
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{ GEN_Sound, {myoffsetof(FTerrainDef, LeftStepSound)} },
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{ GEN_Sound, {myoffsetof(FTerrainDef, RightStepSound)} },
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{ GEN_Bool, {myoffsetof(FTerrainDef, IsLiquid)} },
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{ GEN_Custom, {(size_t)ParseFriction} },
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{ GEN_Bool, {myoffsetof(FTerrainDef, AllowProtection)} },
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};
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// CODE --------------------------------------------------------------------
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//==========================================================================
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//
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// P_InitTerrainTypes
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//
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//==========================================================================
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void P_InitTerrainTypes ()
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{
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int lastlump;
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int lump;
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int size;
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Splashes.Clear();
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Terrains.Clear();
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size = (TexMan.NumTextures()+1);
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TerrainTypes.Resize(size);
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TerrainTypes.Clear();
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MakeDefaultTerrain ();
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lastlump = 0;
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while (-1 != (lump = Wads.FindLump ("TERRAIN", &lastlump)) )
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{
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FScanner sc(lump);
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ParseOuter (sc);
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}
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Splashes.ShrinkToFit ();
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Terrains.ShrinkToFit ();
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}
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//==========================================================================
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//
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// MakeDefaultTerrain
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//
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//==========================================================================
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static void MakeDefaultTerrain ()
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{
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FTerrainDef def;
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memset (&def, 0, sizeof(def));
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def.Name = "Solid";
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def.Splash = -1;
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Terrains.Push (def);
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}
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//==========================================================================
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//
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// ParseOuter
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//
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//==========================================================================
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static void ParseOuter (FScanner &sc)
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{
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int bracedepth = 0;
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bool ifskip = false;
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while (sc.GetString ())
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{
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if (ifskip)
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{
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if (bracedepth > 0)
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{
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if (sc.Compare ("}"))
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{
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bracedepth--;
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continue;
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}
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}
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else if (sc.Compare ("endif"))
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{
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ifskip = false;
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continue;
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}
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if (sc.Compare ("{"))
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{
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bracedepth++;
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}
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else if (sc.Compare ("}"))
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{
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sc.ScriptError ("Too many left braces ('}')");
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}
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}
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else
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{
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switch (sc.MustMatchString (OuterKeywords))
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{
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case OUT_SPLASH:
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ParseSplash (sc);
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break;
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case OUT_TERRAIN:
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ParseTerrain (sc);
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break;
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case OUT_FLOOR:
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ParseFloor (sc);
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break;
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case OUT_DEFAULTTERRAIN:
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ParseDefault (sc);
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break;
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case OUT_IFDOOM:
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case OUT_IFHERETIC:
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case OUT_IFHEXEN:
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case OUT_IFSTRIFE:
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ifskip = !CheckGame(sc.String+2, true);
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break;
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case OUT_ENDIF:
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break;
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}
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}
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}
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}
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//==========================================================================
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//
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// SetSplashDefaults
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//
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//==========================================================================
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static void SetSplashDefaults (FSplashDef *splashdef)
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{
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splashdef->SmallSplashSound =
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splashdef->NormalSplashSound = 0;
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splashdef->SmallSplash =
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splashdef->SplashBase =
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splashdef->SplashChunk = NULL;
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splashdef->ChunkXVelShift =
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splashdef->ChunkYVelShift =
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splashdef->ChunkZVelShift = 8;
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splashdef->ChunkBaseZVel = 1;
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splashdef->SmallSplashClip = 12.;
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splashdef->NoAlert = false;
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}
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//==========================================================================
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//
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// ParseSplash
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//
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//==========================================================================
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void ParseSplash (FScanner &sc)
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{
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int splashnum;
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FSplashDef *splashdef;
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bool isnew = false;
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FName name;
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sc.MustGetString ();
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name = sc.String;
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splashnum = (int)FindSplash (name);
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if (splashnum < 0)
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{
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FSplashDef def;
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SetSplashDefaults (&def);
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def.Name = name;
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splashnum = (int)Splashes.Push (def);
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isnew = true;
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}
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splashdef = &Splashes[splashnum];
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sc.MustGetString ();
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if (!sc.Compare ("modify"))
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{ // Set defaults
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if (!isnew)
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{ // New ones already have their defaults set before they're pushed.
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SetSplashDefaults (splashdef);
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}
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}
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else
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{
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sc.MustGetString();
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}
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if (!sc.Compare ("{"))
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{
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sc.ScriptError ("Expected {");
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}
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else
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{
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GenericParse (sc, SplashParser, SplashKeywords, splashdef, "splash",
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splashdef->Name);
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}
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}
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//==========================================================================
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//
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// ParseTerrain
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//
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//==========================================================================
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void ParseTerrain (FScanner &sc)
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{
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int terrainnum;
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FName name;
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sc.MustGetString ();
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name = sc.String;
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terrainnum = (int)P_FindTerrain (name);
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if (terrainnum < 0)
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{
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FTerrainDef def;
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memset (&def, 0, sizeof(def));
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def.Splash = -1;
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def.Name = name;
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terrainnum = (int)Terrains.Push (def);
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}
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// Set defaults
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sc.MustGetString ();
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if (!sc.Compare ("modify"))
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{
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name = Terrains[terrainnum].Name;
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memset (&Terrains[terrainnum], 0, sizeof(FTerrainDef));
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Terrains[terrainnum].Splash = -1;
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Terrains[terrainnum].Name = name;
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}
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else
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{
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sc.MustGetString ();
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}
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if (sc.Compare ("{"))
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{
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GenericParse (sc, TerrainParser, TerrainKeywords, &Terrains[terrainnum],
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"terrain", Terrains[terrainnum].Name);
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}
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else
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{
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sc.ScriptError ("Expected {");
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}
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}
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//==========================================================================
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//
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// ParseDamage
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//
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//==========================================================================
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static void ParseDamage (FScanner &sc, int keyword, void *fields)
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{
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FTerrainDef *def = (FTerrainDef *)fields;
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sc.MustGetString ();
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// Lava is synonymous with Fire here!
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if (sc.Compare("Lava")) def->DamageMOD=NAME_Fire;
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else def->DamageMOD=sc.String;
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}
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//==========================================================================
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//
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// ParseFriction
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//
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//==========================================================================
|
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static void ParseFriction (FScanner &sc, int keyword, void *fields)
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{
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FTerrainDef *def = (FTerrainDef *)fields;
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double friction, movefactor;
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sc.MustGetFloat ();
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// These calculations should match those in P_SetSectorFriction().
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// A friction of 1.0 is equivalent to ORIG_FRICTION.
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friction = (0x1EB8*(sc.Float*100))/0x80 + 0xD001;
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friction = clamp<double> (friction, 0, 65536.);
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if (friction > ORIG_FRICTION * 65536.) // ice
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movefactor = ((0x10092 - friction) * 1024) / 4352 + 568;
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else
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movefactor = ((friction - 0xDB34)*(0xA))/0x80;
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|
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if (movefactor < 32)
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movefactor = 32;
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|
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def->Friction = friction / 65536.;
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def->MoveFactor = movefactor / 65536.;
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}
|
|
|
|
//==========================================================================
|
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//
|
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// GenericParse
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//
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//==========================================================================
|
|
|
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static void GenericParse (FScanner &sc, FGenericParse *parser, const char **keywords,
|
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void *fields, const char *type, FName name)
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|
{
|
|
bool notdone = true;
|
|
int keyword;
|
|
int val = 0;
|
|
const PClass *info;
|
|
|
|
do
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|
{
|
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sc.MustGetString ();
|
|
keyword = sc.MustMatchString (keywords);
|
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switch (parser[keyword].Type)
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{
|
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case GEN_End:
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notdone = false;
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break;
|
|
|
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case GEN_Sound:
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sc.MustGetString ();
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SET_FIELD (FSoundID, FSoundID(sc.String));
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|
/* unknown sounds never produce errors anywhere else so they shouldn't here either.
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|
if (val == 0)
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|
{
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|
Printf ("Unknown sound %s in %s %s\n",
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sc.String, type, name.GetChars());
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|
}
|
|
*/
|
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break;
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|
|
|
case GEN_Byte:
|
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sc.MustGetNumber ();
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SET_FIELD (uint8_t, sc.Number);
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break;
|
|
|
|
case GEN_Class:
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sc.MustGetString ();
|
|
if (sc.Compare ("None"))
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|
{
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info = NULL;
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|
}
|
|
else
|
|
{
|
|
info = PClass::FindClass (sc.String);
|
|
if (!info->IsDescendantOf (RUNTIME_CLASS(AActor)))
|
|
{
|
|
Printf ("%s is not an Actor (in %s %s)\n",
|
|
sc.String, type, name.GetChars());
|
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info = NULL;
|
|
}
|
|
else if (info == NULL)
|
|
{
|
|
Printf ("Unknown actor %s in %s %s\n",
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|
sc.String, type, name.GetChars());
|
|
}
|
|
}
|
|
SET_FIELD (const PClass *, info);
|
|
break;
|
|
|
|
case GEN_Splash:
|
|
sc.MustGetString ();
|
|
val = FindSplash (sc.String);
|
|
SET_FIELD (int, val);
|
|
if (val == -1)
|
|
{
|
|
Printf ("Splash %s is not defined yet (in %s %s)\n",
|
|
sc.String, type, name.GetChars());
|
|
}
|
|
break;
|
|
|
|
case GEN_Float:
|
|
sc.MustGetFloat ();
|
|
SET_FIELD (float, float(sc.Float));
|
|
break;
|
|
|
|
case GEN_Double:
|
|
sc.MustGetFloat();
|
|
SET_FIELD(double, sc.Float);
|
|
break;
|
|
|
|
case GEN_Time:
|
|
sc.MustGetFloat ();
|
|
SET_FIELD (int, (int)(sc.Float * TICRATE));
|
|
break;
|
|
|
|
case GEN_Bool:
|
|
SET_FIELD (bool, true);
|
|
break;
|
|
|
|
case GEN_Int:
|
|
sc.MustGetNumber ();
|
|
SET_FIELD (int, sc.Number);
|
|
break;
|
|
|
|
case GEN_Custom:
|
|
parser[keyword].u.Handler (sc, keyword, fields);
|
|
break;
|
|
}
|
|
} while (notdone);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// ParseFloor
|
|
//
|
|
//==========================================================================
|
|
|
|
static void ParseFloor (FScanner &sc)
|
|
{
|
|
FTextureID picnum;
|
|
int terrain;
|
|
|
|
bool opt = sc.CheckString("optional");
|
|
sc.MustGetString ();
|
|
|
|
picnum = TexMan.CheckForTexture (sc.String, ETextureType::Flat,
|
|
FTextureManager::TEXMAN_Overridable|FTextureManager::TEXMAN_TryAny);
|
|
|
|
if (!picnum.Exists())
|
|
{
|
|
if (!opt)
|
|
{
|
|
Printf("Unknown flat %s\n", sc.String);
|
|
}
|
|
sc.MustGetString();
|
|
return;
|
|
}
|
|
sc.MustGetString ();
|
|
terrain = P_FindTerrain (sc.String);
|
|
if (terrain == -1)
|
|
{
|
|
Printf ("Unknown terrain %s\n", sc.String);
|
|
terrain = 0;
|
|
}
|
|
TerrainTypes.Set(picnum.GetIndex(), terrain);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// ParseDefault
|
|
//
|
|
//==========================================================================
|
|
|
|
static void ParseDefault (FScanner &sc)
|
|
{
|
|
int terrain;
|
|
|
|
sc.MustGetString ();
|
|
terrain = P_FindTerrain (sc.String);
|
|
if (terrain == -1)
|
|
{
|
|
Printf ("Unknown terrain %s\n", sc.String);
|
|
terrain = 0;
|
|
}
|
|
DefaultTerrainType = terrain;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// FindSplash
|
|
//
|
|
//==========================================================================
|
|
|
|
int FindSplash (FName name)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < Splashes.Size (); i++)
|
|
{
|
|
if (Splashes[i].Name == name)
|
|
{
|
|
return (int)i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// FindTerrain
|
|
//
|
|
//==========================================================================
|
|
|
|
int P_FindTerrain (FName name)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (name == NAME_Null) return -1;
|
|
for (i = 0; i < Terrains.Size (); i++)
|
|
{
|
|
if (Terrains[i].Name == name)
|
|
{
|
|
return (int)i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
FName P_GetTerrainName(int terrainnum)
|
|
{
|
|
if (terrainnum < 0 || terrainnum >= (int)Terrains.Size())
|
|
{
|
|
return NAME_Null;
|
|
}
|
|
else
|
|
{
|
|
return Terrains[terrainnum].Name;
|
|
}
|
|
}
|
|
|
|
DEFINE_FIELD_NAMED(FTerrainDef, Name, TerrainName)
|
|
DEFINE_FIELD(FTerrainDef, Splash)
|
|
DEFINE_FIELD(FTerrainDef, DamageAmount)
|
|
DEFINE_FIELD(FTerrainDef, DamageMOD)
|
|
DEFINE_FIELD(FTerrainDef, DamageTimeMask)
|
|
DEFINE_FIELD(FTerrainDef, FootClip)
|
|
DEFINE_FIELD(FTerrainDef, StepVolume)
|
|
DEFINE_FIELD(FTerrainDef, WalkStepTics)
|
|
DEFINE_FIELD(FTerrainDef, RunStepTics)
|
|
DEFINE_FIELD(FTerrainDef, LeftStepSound)
|
|
DEFINE_FIELD(FTerrainDef, RightStepSound)
|
|
DEFINE_FIELD(FTerrainDef, IsLiquid)
|
|
DEFINE_FIELD(FTerrainDef, AllowProtection)
|
|
DEFINE_FIELD(FTerrainDef, Friction)
|
|
DEFINE_FIELD(FTerrainDef, MoveFactor)
|