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317 lines
8.2 KiB
C++
317 lines
8.2 KiB
C++
//---------------------------------------------------------------------------
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//
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// Copyright(C) 2002-2017 Christoph Oelckers
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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//--------------------------------------------------------------------------
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//
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// FraggleScript loader
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//
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//---------------------------------------------------------------------------
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//
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#include "w_wad.h"
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#include "g_level.h"
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#include "s_sound.h"
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#include "r_sky.h"
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#include "t_script.h"
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#include "cmdlib.h"
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#include "gi.h"
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#include "g_levellocals.h"
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#include "xlat/xlat.h"
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#include "maploader/maploader.h"
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class FScriptLoader
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{
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enum
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{
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RT_SCRIPT,
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RT_INFO,
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RT_OTHER,
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} readtype;
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int drownflag;
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bool HasScripts;
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bool IgnoreInfo;
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FLevelLocals *Level;
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void ParseInfoCmd(char *line, FString &scriptsrc);
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public:
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FScriptLoader(FLevelLocals *l)
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{
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Level = l;
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}
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bool ParseInfo(MapData * map);
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};
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//-----------------------------------------------------------------------------
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//
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// Process the lump to strip all unneeded information from it
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//
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//-----------------------------------------------------------------------------
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void FScriptLoader::ParseInfoCmd(char *line, FString &scriptsrc)
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{
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char *temp;
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// clear any control chars
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for(temp=line; *temp; temp++) if (*temp<32) *temp=32;
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if(readtype != RT_SCRIPT) // not for scripts
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{
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temp = line+strlen(line)-1;
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// strip spaces at the beginning and end of the line
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while(*temp == ' ') *temp-- = 0;
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while(*line == ' ') line++;
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if(!*line) return;
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if((line[0] == '/' && line[1] == '/') || // comment
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line[0] == '#' || line[0] == ';') return;
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}
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if(*line == '[') // a new section seperator
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{
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line++;
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if(!strnicmp(line, "scripts", 7))
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{
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readtype = RT_SCRIPT;
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HasScripts = true; // has scripts
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}
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else if (!strnicmp(line, "level info", 10))
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{
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readtype = RT_INFO;
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}
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return;
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}
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if (readtype==RT_SCRIPT)
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{
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scriptsrc << line << '\n';
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}
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else if (readtype==RT_INFO)
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{
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// Read the usable parts of the level info header
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// and ignore the rest.
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FScanner sc;
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sc.OpenMem("LEVELINFO", line, (int)strlen(line));
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sc.SetCMode(true);
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sc.MustGetString();
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if (sc.Compare("levelname"))
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{
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char * beg = strchr(line, '=')+1;
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while (*beg<=' ') beg++;
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char * comm = strstr(beg, "//");
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if (comm) *comm=0;
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Level->LevelName = beg;
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}
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else if (sc.Compare("partime"))
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{
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sc.MustGetStringName("=");
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sc.MustGetNumber();
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Level->partime=sc.Number;
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}
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else if (sc.Compare("music"))
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{
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bool FS_ChangeMusic(const char * string);
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sc.MustGetStringName("=");
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sc.MustGetString();
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if (!FS_ChangeMusic(sc.String))
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{
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S_ChangeMusic(Level->Music, Level->musicorder);
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}
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}
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else if (sc.Compare("skyname"))
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{
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sc.MustGetStringName("=");
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sc.MustGetString();
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Level->skytexture1 = Level->skytexture2 = TexMan.GetTextureID (sc.String, ETextureType::Wall, FTextureManager::TEXMAN_Overridable|FTextureManager::TEXMAN_ReturnFirst);
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InitSkyMap (Level);
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}
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else if (sc.Compare("interpic"))
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{
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sc.MustGetStringName("=");
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sc.MustGetString();
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Level->info->ExitPic = sc.String;
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}
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else if (sc.Compare("gravity"))
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{
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sc.MustGetStringName("=");
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sc.MustGetNumber();
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Level->gravity=sc.Number*8.f;
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}
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else if (sc.Compare("nextlevel"))
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{
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sc.MustGetStringName("=");
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sc.MustGetString();
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Level->NextMap = sc.String;
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}
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else if (sc.Compare("nextsecret"))
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{
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sc.MustGetStringName("=");
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sc.MustGetString();
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Level->NextSecretMap = sc.String;
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}
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else if (sc.Compare("drown"))
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{
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sc.MustGetStringName("=");
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sc.MustGetNumber();
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drownflag=!!sc.Number;
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}
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else if (sc.Compare("consolecmd"))
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{
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char * beg = strchr(line, '=')+1;
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while (*beg<' ') beg++;
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char * comm = strstr(beg, "//");
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if (comm) *comm=0;
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FS_EmulateCmd(Level, beg);
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}
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else if (sc.Compare("ignore"))
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{
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sc.MustGetStringName("=");
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sc.MustGetNumber();
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IgnoreInfo=!!sc.Number;
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}
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// Ignore anything unknows
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sc.Close();
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}
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}
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//-----------------------------------------------------------------------------
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//
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// Loads the scripts for the current map
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// Initializes all FS data
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//
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//-----------------------------------------------------------------------------
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bool FScriptLoader::ParseInfo(MapData * map)
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{
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char *lump;
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char *rover;
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char *startofline;
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int lumpsize;
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bool fsglobal=false;
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FString scriptsrc;
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// Global initializazion if not done yet.
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static bool done=false;
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// Load the script lump
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IgnoreInfo = false;
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lumpsize = map->Size(0);
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if (lumpsize==0)
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{
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// Try a global FS lump
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int lumpnum=Wads.CheckNumForName("FSGLOBAL");
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if (lumpnum<0) return false;
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lumpsize=Wads.LumpLength(lumpnum);
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if (lumpsize==0) return false;
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fsglobal=true;
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lump=new char[lumpsize+3];
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Wads.ReadLump(lumpnum,lump);
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}
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else
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{
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lump=new char[lumpsize+3];
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map->Read(0, lump);
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}
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// Append a new line. The parser likes to crash when the last character is a valid token.
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lump[lumpsize]='\n';
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lump[lumpsize+1]='\r';
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lump[lumpsize+2]=0;
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lumpsize+=2;
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rover = startofline = lump;
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HasScripts=false;
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drownflag=-1;
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readtype = RT_OTHER;
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while(rover < lump+lumpsize)
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{
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if(*rover == '\n') // end of line
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{
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*rover = 0; // make it an end of string (0)
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if (!IgnoreInfo) ParseInfoCmd(startofline, scriptsrc);
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startofline = rover+1; // next line
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*rover = '\n'; // back to end of line
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}
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rover++;
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}
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if (HasScripts)
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{
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if (Level->FraggleScriptThinker)
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{
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I_Error("Only one FraggleThinker is allowed to exist at a time.\nCheck your code.");
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}
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auto th = Level->CreateThinker<DFraggleThinker>();
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th->LevelScript->data = copystring(scriptsrc.GetChars());
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Level->FraggleScriptThinker = th;
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if (drownflag==-1) drownflag = (Level->maptype != MAPTYPE_DOOM || fsglobal);
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if (!drownflag) Level->airsupply=0; // Legacy doesn't to water damage so we need to check if it has to be disabled here.
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}
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delete[] lump;
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return HasScripts;
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}
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//-----------------------------------------------------------------------------
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//
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// Starts the level info parser
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// and patches the global linedef translation table
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//
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//-----------------------------------------------------------------------------
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void T_LoadScripts(FLevelLocals *Level, MapData *map)
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{
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FScriptLoader parser(Level);
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bool HasScripts = parser.ParseInfo(map);
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// Hack for Legacy compatibility: Since 272 is normally an MBF sky transfer we have to patch it.
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// It could be done with an additional translator but that would be sub-optimal for the user.
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// To handle this the default translator defines the proper Legacy type at index 270.
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// This code then then swaps 270 and 272 - but only if this is either Doom or Heretic and
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// the default translator is being used.
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// Custom translators will not be patched.
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if ((gameinfo.gametype == GAME_Doom || gameinfo.gametype == GAME_Heretic) && Level->info->Translator.IsEmpty() &&
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Level->maptype == MAPTYPE_DOOM && Level->Translator->SimpleLineTranslations.Size() > 272 && Level->Translator->SimpleLineTranslations[272 - 2*HasScripts].special == FS_Execute)
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{
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std::swap(Level->Translator->SimpleLineTranslations[270], Level->Translator->SimpleLineTranslations[272]);
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}
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}
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//-----------------------------------------------------------------------------
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//
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// Adds an actor to the list of spawned things
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//
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//-----------------------------------------------------------------------------
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void T_AddSpawnedThing(FLevelLocals *Level, AActor * ac)
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{
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if (Level->FraggleScriptThinker)
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{
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auto &SpawnedThings = Level->FraggleScriptThinker->SpawnedThings;
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SpawnedThings.Push(GC::ReadBarrier(ac));
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}
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}
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