/*
 * OpenClonk, http://www.openclonk.org
 *
 * Copyright (c) 1998-2000, 2007  Matthes Bender
 * Copyright (c) 2002, 2005-2007  Sven Eberhardt
 * Copyright (c) 2006-2007  Peter Wortmann
 * Copyright (c) 2006-2007  G?nther Brammer
 * Copyright (c) 2001-2009, RedWolf Design GmbH, http://www.clonk.de
 *
 * Portions might be copyrighted by other authors who have contributed
 * to OpenClonk.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 * See isc_license.txt for full license and disclaimer.
 *
 * "Clonk" is a registered trademark of Matthes Bender.
 * See clonk_trademark_license.txt for full license.
 */

/* Material definitions used by the landscape */

#include <C4Include.h>
#include <C4Material.h>
#include <C4Components.h>

#ifndef BIG_C4INCLUDE

#include <C4Group.h>
#include <C4PXS.h>
#include <C4Random.h>
#include <C4ToolsDlg.h> // For C4TLS_MatSky...
#include <C4Texture.h>
#include <C4Aul.h>
#include <C4Landscape.h>
#include <C4SoundSystem.h>
#include <C4Effects.h>
#include <C4Game.h>
#include <C4Log.h>
#include <C4Physics.h> // For GravAccel

#endif


int32_t MVehic=MNone,MTunnel=MNone,MWater=MNone,MSnow=MNone,MEarth=MNone,MGranite=MNone,MFlyAshes=MNone;
BYTE MCVehic=0;

// -------------------------------------- C4MaterialReaction


struct ReactionFuncMapEntry { const char *szRFName; C4MaterialReactionFunc pFunc; };

const ReactionFuncMapEntry ReactionFuncMap[] = {
	{ "Script",  &C4MaterialMap::mrfScript },
	{ "Convert", &C4MaterialMap::mrfConvert},
	{ "Poof",    &C4MaterialMap::mrfPoof },
	{ "Corrode", &C4MaterialMap::mrfCorrode },
	{ "Insert",  &C4MaterialMap::mrfInsert },
	{ NULL, &C4MaterialReaction::NoReaction } };


void C4MaterialReaction::CompileFunc(StdCompiler *pComp)
	{
	if (pComp->isCompiler()) pScriptFunc = NULL;
	// compile reaction func ptr
	StdStrBuf sReactionFuncName;
	int32_t i=0; while (ReactionFuncMap[i].szRFName && (ReactionFuncMap[i].pFunc != pFunc)) ++i;
	sReactionFuncName = ReactionFuncMap[i].szRFName;
	pComp->Value(mkNamingAdapt(sReactionFuncName,		"Type",              				StdStrBuf()	    ));
	i=0; while (ReactionFuncMap[i].szRFName && !SEqual(ReactionFuncMap[i].szRFName, sReactionFuncName.getData())) ++i;
	pFunc = ReactionFuncMap[i].pFunc;
	// compile the rest
	pComp->Value(mkNamingAdapt(TargetSpec,					"TargetSpec",								StdCopyStrBuf()	));
	pComp->Value(mkNamingAdapt(ScriptFunc,					"ScriptFunc",								StdCopyStrBuf()	));
	pComp->Value(mkNamingAdapt(iExecMask,           "ExecMask",                 ~0u             ));
	pComp->Value(mkNamingAdapt(fReverse,            "Reverse",                  false           ));
	pComp->Value(mkNamingAdapt(fInverseSpec,        "InverseSpec",              false           ));
	pComp->Value(mkNamingAdapt(fInsertionCheck,     "CheckSlide",               true            ));
	pComp->Value(mkNamingAdapt(iDepth,              "Depth",                    0               ));
	pComp->Value(mkNamingAdapt(sConvertMat,         "ConvertMat",               StdCopyStrBuf() ));
	pComp->Value(mkNamingAdapt(iCorrosionRate,      "CorrosionRate",            100             ));
	}


void C4MaterialReaction::ResolveScriptFuncs(const char *szMatName)
	{
	// get script func for script-defined behaviour
	if (pFunc == &C4MaterialMap::mrfScript)
		pScriptFunc = ::ScriptEngine.GetSFuncWarn(this->ScriptFunc.getData(), AA_PROTECTED, FormatString("Material reaction of \"%s\"", szMatName).getData());
	else
		pScriptFunc = NULL;
	}

// -------------------------------------- C4MaterialCore

C4MaterialCore::C4MaterialCore()
	{
	Clear();
	}

void C4MaterialCore::Clear()
	{
	CustomReactionList.clear();
	sTextureOverlay.Clear();
	sPXSGfx.Clear();
	sBlastShiftTo.Clear();
	sInMatConvert.Clear();
	sInMatConvertTo.Clear();
	sBelowTempConvertTo.Clear();
	sAboveTempConvertTo.Clear();
	*Name='\0';
	MapChunkType = 0;
	Density = 0;
	Friction = 0;
	DigFree = 0;
	BlastFree = 0;
	Dig2Object = 0;
	Dig2ObjectRatio = 0;
	Dig2ObjectOnRequestOnly = 0;
	Blast2Object = 0;
	Blast2ObjectRatio = 0;
	Blast2PXSRatio = 0;
	Instable = 0;
	MaxAirSpeed = 0;
	MaxSlide = 0;
	WindDrift = 0;
	Inflammable = 0;
	Incindiary = 0;
	Extinguisher = 0;
	Corrosive = 0;
	Corrode = 0;
	Soil = 0;
	Placement = 0;
	OverlayType = 0;
	PXSGfxRt.Default();
	PXSGfxSize = 0;
	InMatConvertDepth = 0;
	BelowTempConvert = 0;
	BelowTempConvertDir = 0;
	AboveTempConvert = 0;
	AboveTempConvertDir = 0;
	ColorAnimation = 0;
	TempConvStrength = 0;
	MinHeightCount = 0;
  SplashRate=10;
	}

void C4MaterialCore::Default()
	{
	Clear();
	}

bool C4MaterialCore::Load(C4Group &hGroup,
													const char *szEntryName)
	{
	StdStrBuf Source;
	if (!hGroup.LoadEntryString(szEntryName,Source))
		return false;
	StdStrBuf Name = hGroup.GetFullName() + DirSep + szEntryName;
  if(!CompileFromBuf_LogWarn<StdCompilerINIRead>(*this, Source, Name.getData()))
		return false;
	// adjust placement, if not specified
	if (!Placement)
		{
		if (DensitySolid(Density))
			{
			Placement=30;
			if (!DigFree) Placement+=20;
			if (!BlastFree) Placement+=10;
			if (!Dig2ObjectOnRequestOnly) Placement+=10;
			}
		else if (DensityLiquid(Density))
			Placement=10;
		else Placement=5;
		}
	return true;
	}

void C4MaterialCore::CompileFunc(StdCompiler *pComp)
	{
	if (pComp->isCompiler()) Clear();
	pComp->Name("Material");
	pComp->Value(mkNamingAdapt(toC4CStr(Name),					"Name",								""								));
	pComp->Value(mkNamingAdapt(ColorAnimation,					"ColorAnimation",			0									));
	pComp->Value(mkNamingAdapt(MapChunkType,						"Shape",							0									));
	pComp->Value(mkNamingAdapt(Density,									"Density",						0									));
	pComp->Value(mkNamingAdapt(Friction,								"Friction",						0									));
	pComp->Value(mkNamingAdapt(DigFree,									"DigFree",						0									));
	pComp->Value(mkNamingAdapt(BlastFree,								"BlastFree",					0									));
	pComp->Value(mkNamingAdapt(mkC4IDAdapt(Blast2Object),"Blast2Object",			0									));
	pComp->Value(mkNamingAdapt(mkC4IDAdapt(Dig2Object),	"Dig2Object",					0									));
	pComp->Value(mkNamingAdapt(Dig2ObjectRatio,					"Dig2ObjectRatio",		0									));
	pComp->Value(mkNamingAdapt(Dig2ObjectOnRequestOnly,	"Dig2ObjectRequest",	0									));
	pComp->Value(mkNamingAdapt(Blast2ObjectRatio,				"Blast2ObjectRatio",	0									));
	pComp->Value(mkNamingAdapt(Blast2PXSRatio,					"Blast2PXSRatio",			0									));
	pComp->Value(mkNamingAdapt(Instable,								"Instable",						0									));
	pComp->Value(mkNamingAdapt(MaxAirSpeed,							"MaxAirSpeed",				0									));
	pComp->Value(mkNamingAdapt(MaxSlide,								"MaxSlide",						0									));
	pComp->Value(mkNamingAdapt(WindDrift,								"WindDrift",					0									));
	pComp->Value(mkNamingAdapt(Inflammable,							"Inflammable",				0									));
	pComp->Value(mkNamingAdapt(Incindiary,							"Incindiary",					0									));
	pComp->Value(mkNamingAdapt(Corrode,									"Corrode",						0									));
	pComp->Value(mkNamingAdapt(Corrosive,								"Corrosive",					0									));
	pComp->Value(mkNamingAdapt(Extinguisher,						"Extinguisher",				0									));
	pComp->Value(mkNamingAdapt(Soil,										"Soil",								0									));
	pComp->Value(mkNamingAdapt(Placement,								"Placement",					0									));
	pComp->Value(mkNamingAdapt(mkParAdapt(sTextureOverlay, StdCompiler::RCT_IdtfAllowEmpty),"TextureOverlay",			""								));
	pComp->Value(mkNamingAdapt(OverlayType,							"OverlayType",				0									));
	pComp->Value(mkNamingAdapt(mkParAdapt(sPXSGfx, StdCompiler::RCT_IdtfAllowEmpty),				"PXSGfx",							""								));
	pComp->Value(mkNamingAdapt(PXSGfxRt,								"PXSGfxRt",						TargetRect0				));
	pComp->Value(mkNamingAdapt(PXSGfxSize,							"PXSGfxSize",					PXSGfxRt.Wdt			));
	pComp->Value(mkNamingAdapt(TempConvStrength,				"TempConvStrength",		0									));
	pComp->Value(mkNamingAdapt(mkParAdapt(sBlastShiftTo, StdCompiler::RCT_IdtfAllowEmpty),"BlastShiftTo",				""								));
	pComp->Value(mkNamingAdapt(mkParAdapt(sInMatConvert, StdCompiler::RCT_IdtfAllowEmpty),"InMatConvert",				""								));
	pComp->Value(mkNamingAdapt(mkParAdapt(sInMatConvertTo, StdCompiler::RCT_IdtfAllowEmpty),"InMatConvertTo",		""								));
	pComp->Value(mkNamingAdapt(InMatConvertDepth,				"InMatConvertDepth",	0									));
	pComp->Value(mkNamingAdapt(AboveTempConvert,				"AboveTempConvert",		0									));
	pComp->Value(mkNamingAdapt(AboveTempConvertDir,			"AboveTempConvertDir",0									));
	pComp->Value(mkNamingAdapt(mkParAdapt(sAboveTempConvertTo, StdCompiler::RCT_IdtfAllowEmpty),"AboveTempConvertTo", ""					));
	pComp->Value(mkNamingAdapt(BelowTempConvert,				"BelowTempConvert",		0									));
	pComp->Value(mkNamingAdapt(BelowTempConvertDir,			"BelowTempConvertDir",0									));
	pComp->Value(mkNamingAdapt(mkParAdapt(sBelowTempConvertTo, StdCompiler::RCT_IdtfAllowEmpty),"BelowTempConvertTo", ""					));
	pComp->Value(mkNamingAdapt(MinHeightCount,				   "MinHeightCount",	  0									));
  pComp->Value(mkNamingAdapt(SplashRate,	    			   "SplashRate",	      10								));
	pComp->NameEnd();
	// material reactions
	pComp->Value(mkNamingAdapt(
		mkSTLContainerAdapt(CustomReactionList),
			"Reaction", std::vector<C4MaterialReaction>()));
	}


// -------------------------------------- C4Material

C4Material::C4Material()
  {
  BlastShiftTo=0;
  InMatConvertTo=MNone;
  BelowTempConvertTo=0;
  AboveTempConvertTo=0;
  }

void C4Material::UpdateScriptPointers()
	{
	for (uint32_t i = 0; i < CustomReactionList.size(); ++i)
		CustomReactionList[i].ResolveScriptFuncs(Name);
	}


// -------------------------------------- C4MaterialMap


C4MaterialMap::C4MaterialMap() : DefReactConvert(&mrfConvert), DefReactPoof(&mrfPoof), DefReactCorrode(&mrfCorrode), DefReactIncinerate(&mrfIncinerate), DefReactInsert(&mrfInsert)
  {
	Default();
  }


C4MaterialMap::~C4MaterialMap()
  {
  Clear();
  }

void C4MaterialMap::Clear()
  {
  if (Map) delete [] Map; Map=NULL;
	delete [] ppReactionMap; ppReactionMap = NULL;
  }

int32_t C4MaterialMap::Load(C4Group &hGroup, C4Group* OverloadFile)
  {
	char entryname[256+1];

  // Determine number of materials in files
  int32_t mat_num=hGroup.EntryCount(C4CFN_MaterialFiles);

  // Allocate new map
	C4Material *pNewMap = new C4Material [mat_num + Num];
	if(!pNewMap) return 0;

  // Load material cores to map
  hGroup.ResetSearch(); int32_t cnt=0;
	while (hGroup.FindNextEntry(C4CFN_MaterialFiles,entryname))
		{
		// Load mat
		if (!pNewMap[cnt].Load(hGroup,entryname))
			{ delete [] pNewMap; return 0; }
		// A new material?
		if(Get(pNewMap[cnt].Name) == MNone)
			cnt++;
		}

	// Take over old materials.
	for(int32_t i = 0; i < Num; i++)
		{
		pNewMap[cnt+i] = Map[i];
		}
	delete [] Map;
	Map = pNewMap;

	// set material number
	Num+=cnt;

  return cnt;
  }

bool C4MaterialMap::HasMaterials(C4Group &hGroup) const
	{
	return !!hGroup.EntryCount(C4CFN_MaterialFiles);
	}

int32_t C4MaterialMap::Get(const char *szMaterial)
  {
  int32_t cnt;
  for (cnt=0; cnt<Num; cnt++)
    if (SEqualNoCase(szMaterial,Map[cnt].Name))
      return cnt;
  return MNone;
  }


bool C4MaterialMap::CrossMapMaterials() // Called after load
	{
	// Check material number
	if (::MaterialMap.Num>C4MaxMaterial)
		{ LogFatal(LoadResStr("IDS_PRC_TOOMANYMATS")); return false; }
	// build reaction function map
	delete [] ppReactionMap;
	typedef C4MaterialReaction * C4MaterialReactionPtr;
	ppReactionMap = new C4MaterialReactionPtr[(Num+1)*(Num+1)];
	for (int32_t iMatPXS=-1; iMatPXS<Num; iMatPXS++)
		{
		C4Material *pMatPXS = (iMatPXS+1) ? Map+iMatPXS : NULL;
		for (int32_t iMatLS=-1; iMatLS<Num; iMatLS++)
			{
			C4MaterialReaction *pReaction = NULL;
			C4Material *pMatLS  = ( iMatLS+1) ? Map+ iMatLS : NULL;
			// natural stuff: material conversion here?
			if (pMatPXS && pMatPXS->sInMatConvert.getLength() && SEqualNoCase(pMatPXS->sInMatConvert.getData(), pMatLS ? pMatLS->Name : C4TLS_MatSky))
				pReaction = &DefReactConvert;
			// the rest is happening for same/higher densities only
			else if ((MatDensity(iMatPXS) <= MatDensity(iMatLS)) && pMatPXS && pMatLS)
				{
				// incindiary vs extinguisher
				if ((pMatPXS->Incindiary && pMatLS->Extinguisher) || (pMatPXS->Extinguisher && pMatLS->Incindiary))
					pReaction = &DefReactPoof;
				// incindiary vs inflammable
				else if ((pMatPXS->Incindiary && pMatLS->Inflammable) || (pMatPXS->Inflammable && pMatLS->Incindiary))
					pReaction = &DefReactIncinerate;
				// corrosive vs corrode
				else if (pMatPXS->Corrosive && pMatLS->Corrode)
					pReaction = &DefReactCorrode;
				// otherwise, when hitting same or higher density: Material insertion
				else
					pReaction = &DefReactInsert;
				}
			// assign the function; or NULL for no reaction
			SetMatReaction(iMatPXS, iMatLS, pReaction);
			}
		}
	// material-specific initialization
	int32_t cnt;
	for (cnt=0; cnt<Num; cnt++)
		{
		C4Material *pMat = Map+cnt;
		const char *szTextureOverlay = NULL;
		// newgfx: init pattern
		if (Map[cnt].sTextureOverlay.getLength())
			if (::TextureMap.GetTexture(Map[cnt].sTextureOverlay.getLength()))
				{
				szTextureOverlay = Map[cnt].sTextureOverlay.getData();
				// backwards compatibility: if a pattern was specified although the no-pattern flag was set, overwrite that flag
				if (Map[cnt].OverlayType & C4MatOv_None)
					{
					DebugLogF("Error in overlay of material %s: Flag C4MatOv_None ignored because a custom overlay (%s) was specified!", Map[cnt].Name, szTextureOverlay);
					Map[cnt].OverlayType &= ~C4MatOv_None;
					}
				}
		// default to smooth
		if (!szTextureOverlay)
			szTextureOverlay = "Smooth";
		// search/create entry in texmap
		Map[cnt].DefaultMatTex = ::TextureMap.GetIndex(Map[cnt].Name, szTextureOverlay, true,
			FormatString("DefaultMatTex of mat %s", Map[cnt].Name).getData());
		// init PXS facet
		SURFACE sfcTexture;
		C4Texture * Texture;
		if (Map[cnt].sPXSGfx.getLength())
			if (Texture=::TextureMap.GetTexture(Map[cnt].sPXSGfx.getData()))
				if (sfcTexture=Texture->Surface32)
					Map[cnt].PXSFace.Set(sfcTexture, Map[cnt].PXSGfxRt.x, Map[cnt].PXSGfxRt.y, Map[cnt].PXSGfxRt.Wdt, Map[cnt].PXSGfxRt.Hgt);
		// evaluate reactions for that material
		for (unsigned int iRCnt = 0; iRCnt < pMat->CustomReactionList.size(); ++iRCnt)
			{
			C4MaterialReaction *pReact = &(pMat->CustomReactionList[iRCnt]);
			if (pReact->sConvertMat.getLength()) pReact->iConvertMat = Get(pReact->sConvertMat.getData()); else pReact->iConvertMat = -1;
			// evaluate target spec
			int32_t tmat;
			if (MatValid(tmat=Get(pReact->TargetSpec.getData())))
				{
				// single material target
				if (pReact->fInverseSpec)
					for (int32_t cnt2=-1; cnt2<Num; cnt2++) if (cnt2!=tmat) SetMatReaction(cnt, cnt2, pReact);
				else
					SetMatReaction(cnt, tmat, pReact);
				}
			else if (SEqualNoCase(pReact->TargetSpec.getData(), "All"))
				{
				// add to all materials, including sky
				if (!pReact->fInverseSpec) for (int32_t cnt2=-1; cnt2<Num; cnt2++) SetMatReaction(cnt, cnt2, pReact);
				}
			else if (SEqualNoCase(pReact->TargetSpec.getData(), "Solid"))
				{
				// add to all solid materials
				if (pReact->fInverseSpec) SetMatReaction(cnt, -1, pReact);
				for (int32_t cnt2=0; cnt2<Num; cnt2++) if (DensitySolid(Map[cnt2].Density) != pReact->fInverseSpec) SetMatReaction(cnt, cnt2, pReact);
				}
			else if (SEqualNoCase(pReact->TargetSpec.getData(), "SemiSolid"))
				{
				// add to all semisolid materials
				if (pReact->fInverseSpec) SetMatReaction(cnt, -1, pReact);
				for (int32_t cnt2=0; cnt2<Num; cnt2++) if (DensitySemiSolid(Map[cnt2].Density) != pReact->fInverseSpec) SetMatReaction(cnt, cnt2, pReact);
				}
			else if (SEqualNoCase(pReact->TargetSpec.getData(), "Background"))
				{
				// add to all BG materials, including sky
				if (!pReact->fInverseSpec) SetMatReaction(cnt, -1, pReact);
				for (int32_t cnt2=0; cnt2<Num; cnt2++) if (!Map[cnt2].Density != pReact->fInverseSpec) SetMatReaction(cnt, cnt2, pReact);
				}
			else if (SEqualNoCase(pReact->TargetSpec.getData(), "Sky"))
				{
				// add to sky
				if (!pReact->fInverseSpec)
					SetMatReaction(cnt, -1, pReact);
				else
					for (int32_t cnt2=0; cnt2<Num; cnt2++) SetMatReaction(cnt, cnt2, pReact);
				}
			else if (SEqualNoCase(pReact->TargetSpec.getData(), "Incindiary"))
				{
				// add to all incendiary materials
				if (pReact->fInverseSpec) SetMatReaction(cnt, -1, pReact);
				for (int32_t cnt2=0; cnt2<Num; cnt2++) if (!Map[cnt2].Incindiary == pReact->fInverseSpec) SetMatReaction(cnt, cnt2, pReact);
				}
			else if (SEqualNoCase(pReact->TargetSpec.getData(), "Extinguisher"))
				{
				// add to all incendiary materials
				if (pReact->fInverseSpec) SetMatReaction(cnt, -1, pReact);
				for (int32_t cnt2=0; cnt2<Num; cnt2++) if (!Map[cnt2].Extinguisher == pReact->fInverseSpec) SetMatReaction(cnt, cnt2, pReact);
				}
			else if (SEqualNoCase(pReact->TargetSpec.getData(), "Inflammable"))
				{
				// add to all incendiary materials
				if (pReact->fInverseSpec) SetMatReaction(cnt, -1, pReact);
				for (int32_t cnt2=0; cnt2<Num; cnt2++) if (!Map[cnt2].Inflammable == pReact->fInverseSpec) SetMatReaction(cnt, cnt2, pReact);
				}
			else if (SEqualNoCase(pReact->TargetSpec.getData(), "Corrosive"))
				{
				// add to all incendiary materials
				if (pReact->fInverseSpec) SetMatReaction(cnt, -1, pReact);
				for (int32_t cnt2=0; cnt2<Num; cnt2++) if (!Map[cnt2].Corrosive == pReact->fInverseSpec) SetMatReaction(cnt, cnt2, pReact);
				}
			else if (SEqualNoCase(pReact->TargetSpec.getData(), "Corrode"))
				{
				// add to all incendiary materials
				if (pReact->fInverseSpec) SetMatReaction(cnt, -1, pReact);
				for (int32_t cnt2=0; cnt2<Num; cnt2++) if (!Map[cnt2].Corrode == pReact->fInverseSpec) SetMatReaction(cnt, cnt2, pReact);
				}
			}
		}
	// second loop (DefaultMatTex is needed by GetIndexMatTex)
  for (cnt=0; cnt<Num; cnt++)
    {
    if (Map[cnt].sBlastShiftTo.getLength())
			Map[cnt].BlastShiftTo=::TextureMap.GetIndexMatTex(Map[cnt].sBlastShiftTo.getData(), NULL, true, FormatString("BlastShiftTo of mat %s", Map[cnt].Name).getData());
    if (Map[cnt].sInMatConvertTo.getLength())
      Map[cnt].InMatConvertTo=Get(Map[cnt].sInMatConvertTo.getData());
    if (Map[cnt].sBelowTempConvertTo.getLength())
      Map[cnt].BelowTempConvertTo=::TextureMap.GetIndexMatTex(Map[cnt].sBelowTempConvertTo.getData(), NULL, true, FormatString("BelowTempConvertTo of mat %s", Map[cnt].Name).getData());
    if (Map[cnt].sAboveTempConvertTo.getLength())
      Map[cnt].AboveTempConvertTo=::TextureMap.GetIndexMatTex(Map[cnt].sAboveTempConvertTo.getData(), NULL, true, FormatString("AboveTempConvertTo of mat %s", Map[cnt].Name).getData());
		}
#if 0
	int32_t i=0;
	while (ReactionFuncMap[i].szRFName) {printf("%s: %p\n", ReactionFuncMap[i].szRFName, ReactionFuncMap[i].pFunc);++i;}
	for (int32_t cnt=-1; cnt<Num; cnt++)
		for (int32_t cnt2=-1; cnt2<Num; cnt2++)
			if (ppReactionMap[(cnt2+1)*(Num+1) + cnt+1])
				printf("%s -> %s: %p\n", Map[cnt].Name, Map[cnt2].Name, ppReactionMap[(cnt2+1)*(Num+1) + cnt+1]->pFunc);
#endif
	// Get hardcoded system material indices
	MVehic   = Get("Vehicle"); MCVehic = Mat2PixColDefault(MVehic);
	MTunnel  = Get("Tunnel");
	MWater   = Get("Water");
	MSnow    = Get("Snow");
	MGranite = Get("Granite");
	MFlyAshes= Get("FlyAshes");
	MEarth   = Get(Game.C4S.Landscape.Material);
	if ((MVehic==MNone) || (MTunnel==MNone))
		{ LogFatal(LoadResStr("IDS_PRC_NOSYSMATS")); return false; }
	return true;
	}


void C4MaterialMap::SetMatReaction(int32_t iPXSMat, int32_t iLSMat, C4MaterialReaction *pReact)
	{
	// evaluate reaction swap
	if (pReact && pReact->fReverse) Swap(iPXSMat, iLSMat);
	// set it
	ppReactionMap[(iLSMat+1)*(Num+1) + iPXSMat+1] = pReact;
	}

bool C4MaterialMap::SaveEnumeration(C4Group &hGroup)
	{
	char *mapbuf = new char [1000];
	mapbuf[0]=0;
	SAppend("[Enumeration]",mapbuf); SAppend(LineFeed,mapbuf);
  for (int32_t cnt=0; cnt<Num; cnt++)
		{
		SAppend(Map[cnt].Name,mapbuf);
		SAppend(LineFeed,mapbuf);
		}
	SAppend(EndOfFile,mapbuf);
	return hGroup.Add(C4CFN_MatMap,mapbuf,SLen(mapbuf),false,true);
	}

bool C4MaterialMap::LoadEnumeration(C4Group &hGroup)
	{
	// Load enumeration map (from savegame), succeed if not present
	StdStrBuf mapbuf;
	if (!hGroup.LoadEntryString(C4CFN_MatMap, mapbuf)) return true;

	// Sort material array by enumeration map, fail if some missing
	const char *csearch;
	char cmatname[C4M_MaxName+1];
	int32_t cmat=0;
	if (!(csearch = SSearch(mapbuf.getData(),"[Enumeration]"))) { return false; }
	csearch=SAdvanceSpace(csearch);
	while (IsIdentifier(*csearch))
		{
		SCopyIdentifier(csearch,cmatname,C4M_MaxName);
		if (!SortEnumeration(cmat,cmatname))
			{
			// Output error message!
			return false;
			}
		cmat++;
		csearch+=SLen(cmatname);
		csearch=SAdvanceSpace(csearch);
		}

	return true;
	}

bool C4MaterialMap::SortEnumeration(int32_t iMat, const char *szMatName)
	{

	// Not enough materials loaded
	if (iMat>=Num) return false;

	// Find requested mat
	int32_t cmat;
	for (cmat=iMat; cmat<Num; cmat++)
		if (SEqual(szMatName,Map[cmat].Name))
			break;
	// Not found
	if (cmat>=Num) return false;

	// already the same?
	if (cmat == iMat) return true;

	// Move requested mat to indexed position
	C4Material mswap;
	mswap = Map[iMat];
	Map[iMat] = Map[cmat];
	Map[cmat] = mswap;

	return true;
	}

void C4MaterialMap::Default()
	{
  Num=0;
  Map=NULL;
	ppReactionMap=NULL;
	}

C4MaterialReaction *C4MaterialMap::GetReaction(int32_t iPXSMat, int32_t iLandscapeMat)
	{
	// safety
	if (!ppReactionMap) return NULL;
	if (!Inside<int32_t>(iPXSMat, -1, Num-1)) return NULL;
	if (!Inside<int32_t>(iLandscapeMat, -1, Num-1)) return NULL;
	// values OK; get func!
	return GetReactionUnsafe(iPXSMat, iLandscapeMat);
	}


bool mrfInsertCheck(int32_t &iX, int32_t &iY, FIXED &fXDir, FIXED &fYDir, int32_t &iPxsMat, int32_t iLsMat, bool *pfPosChanged)
	{
	// always manipulating pos/speed here
	if (pfPosChanged) *pfPosChanged = true;

	// Rough contact? May splash
	if (fYDir > itofix(1))
		if (::MaterialMap.Map[iPxsMat].SplashRate && !Random(::MaterialMap.Map[iPxsMat].SplashRate))
			{
			fYDir = -fYDir/8;
			fXDir = fXDir/8 + FIXED100(Random(200) - 100);
			if (fYDir) return false;
			}

	// Contact: Stop
	fYDir = 0;

	// Incindiary mats smoke on contact even before doing their slide
	if (::MaterialMap.Map[iPxsMat].Incindiary)
		if (!Random(25)) Smoke(iX, iY, 4+Rnd3() );

	// Move by mat path/slide
	int32_t iSlideX = iX, iSlideY = iY;
	if (::Landscape.FindMatSlide(iSlideX,iSlideY,Sign(GravAccel),::MaterialMap.Map[iPxsMat].Density,::MaterialMap.Map[iPxsMat].MaxSlide))
		{
		if(iPxsMat == iLsMat)
			{ iX = iSlideX; iY = iSlideY; fXDir = 0; return false; }
		// Accelerate into the direction
		fXDir = (fXDir * 10 + Sign(iSlideX - iX)) / 11 + FIXED10(Random(5)-2);
		// Slide target in range? Move there directly.
		if(Abs(iX - iSlideX) <= Abs(fixtoi(fXDir)))
			{
			iX = iSlideX;
			iY = iSlideY;
			if(fYDir <= 0) fXDir = 0;
			}
		// Continue existance
		return false;
		}
	// insertion OK
	return true;
	}

bool mrfUserCheck(C4MaterialReaction *pReaction, int32_t &iX, int32_t &iY, int32_t iLSPosX, int32_t iLSPosY, FIXED &fXDir, FIXED &fYDir, int32_t &iPxsMat, int32_t iLsMat, MaterialInteractionEvent evEvent, bool *pfPosChanged)
	{
	// check execution mask
	if ((1<<evEvent) & ~pReaction->iExecMask) return false;
	// do splash/slide check, if desired
	if (pReaction->fInsertionCheck && evEvent == meePXSMove)
		if (!mrfInsertCheck(iX, iY, fXDir, fYDir, iPxsMat, iLsMat, pfPosChanged))
			return false;
	// checks OK; reaction may be applied
	return true;
	}

bool C4MaterialMap::mrfConvert(C4MaterialReaction *pReaction, int32_t &iX, int32_t &iY, int32_t iLSPosX, int32_t iLSPosY, FIXED &fXDir, FIXED &fYDir, int32_t &iPxsMat, int32_t iLsMat, MaterialInteractionEvent evEvent, bool *pfPosChanged)
	{
	if (pReaction->fUserDefined) if (!mrfUserCheck(pReaction, iX, iY, iLSPosX, iLSPosY, fXDir, fYDir, iPxsMat, iLsMat, evEvent, pfPosChanged)) return false;
	switch (evEvent)
		{
		case meePXSMove: // PXS movement
			// for hardcoded stuff: only InMatConvert is Snow in Water, which does not have any collision proc
			if (!pReaction->fUserDefined) break;
			// user-defined conversions may also convert upon hitting materials

		case meePXSPos: // PXS check before movement
			{
			// Check depth
			int32_t iDepth = pReaction->fUserDefined ? pReaction->iDepth : ::MaterialMap.Map[iPxsMat].InMatConvertDepth;
			if (!iDepth || GBackMat(iX, iY - iDepth) == iLsMat)
				{
				// Convert
				iPxsMat = pReaction->fUserDefined ? pReaction->iConvertMat : ::MaterialMap.Map[iPxsMat].InMatConvertTo;
				if (!MatValid(iPxsMat))
					// Convert failure (target mat not be loaded, or target may be C4TLS_MatSky): Kill Pix
					return true;
				// stop movement after conversion
				fXDir = fYDir = 0;
				if (pfPosChanged) *pfPosChanged = true;
				}
			}
			break;

		case meeMassMove: // MassMover-movement
		  // Conversion-transfer to PXS
			::PXS.Create(iPxsMat,itofix(iX),itofix(iY));
			return true;
		}
	// not handled
	return false;
	}

bool C4MaterialMap::mrfPoof(C4MaterialReaction *pReaction, int32_t &iX, int32_t &iY, int32_t iLSPosX, int32_t iLSPosY, FIXED &fXDir, FIXED &fYDir, int32_t &iPxsMat, int32_t iLsMat, MaterialInteractionEvent evEvent, bool *pfPosChanged)
	{
	if (pReaction->fUserDefined) if (!mrfUserCheck(pReaction, iX, iY, iLSPosX, iLSPosY, fXDir, fYDir, iPxsMat, iLsMat, evEvent, pfPosChanged)) return false;
	switch (evEvent)
		{
		case meeMassMove: // MassMover-movement
		case meePXSPos: // PXS check before movement: Kill both landscape and PXS mat
			::Landscape.ExtractMaterial(iLSPosX,iLSPosY);
			if (!Rnd3()) Smoke(iX,iY,3);
			if (!Rnd3()) StartSoundEffectAt("Pshshsh", iX, iY);
			return true;

		case meePXSMove: // PXS movement
			// incindiary/extinguisher/corrosives are always same density proc; so do insertion check first
			if (!pReaction->fUserDefined)
				if (!mrfInsertCheck(iX, iY, fXDir, fYDir, iPxsMat, iLsMat, pfPosChanged))
					// either splash or slide prevented interaction
					return false;
			// Always kill both landscape and PXS mat
			::Landscape.ExtractMaterial(iLSPosX,iLSPosY);
			if (!Rnd3()) Smoke(iX,iY,3);
			if (!Rnd3()) StartSoundEffectAt("Pshshsh", iX, iY);
			return true;
		}
	// not handled
	return false;
	}

bool C4MaterialMap::mrfCorrode(C4MaterialReaction *pReaction, int32_t &iX, int32_t &iY, int32_t iLSPosX, int32_t iLSPosY, FIXED &fXDir, FIXED &fYDir, int32_t &iPxsMat, int32_t iLsMat, MaterialInteractionEvent evEvent, bool *pfPosChanged)
	{
	if (pReaction->fUserDefined) if (!mrfUserCheck(pReaction, iX, iY, iLSPosX, iLSPosY, fXDir, fYDir, iPxsMat, iLsMat, evEvent, pfPosChanged)) return false;
	switch (evEvent)
		{
		case meePXSPos: // PXS check before movement
			// No corrosion - it would make acid incredibly effective
			break;
		case meeMassMove: // MassMover-movement
			{
			// evaluate corrosion percentage
			bool fDoCorrode;
			if (pReaction->fUserDefined)
				fDoCorrode = (Random(100) < pReaction->iCorrosionRate);
			else
				fDoCorrode = (Random(100) < ::MaterialMap.Map[iPxsMat].Corrosive) && (Random(100) < ::MaterialMap.Map[iLsMat].Corrode);
			if (fDoCorrode)
				{
				ClearBackPix(iLSPosX,iLSPosY);
				//::Landscape.CheckInstabilityRange(iLSPosX,iLSPosY); - more correct, but makes acid too effective as well
				if (!Random(5)) Smoke(iX,iY,3+Random(3));
				if (!Random(20)) StartSoundEffectAt("Corrode", iX, iY);
				return true;
				}
			}
			break;

		case meePXSMove: // PXS movement
			{
			// corrodes to corrosives are always same density proc; so do insertion check first
			if (!pReaction->fUserDefined)
				if (!mrfInsertCheck(iX, iY, fXDir, fYDir, iPxsMat, iLsMat, pfPosChanged))
					// either splash or slide prevented interaction
					return false;
			// evaluate corrosion percentage
			bool fDoCorrode;
			if (pReaction->fUserDefined)
				fDoCorrode = (Random(100) < pReaction->iCorrosionRate);
			else
				fDoCorrode = (Random(100) < ::MaterialMap.Map[iPxsMat].Corrosive) && (Random(100) < ::MaterialMap.Map[iLsMat].Corrode);
			if (fDoCorrode)
				{
				ClearBackPix(iLSPosX,iLSPosY);
				::Landscape.CheckInstabilityRange(iLSPosX,iLSPosY);
				if (!Random(5)) Smoke(iX,iY,3+Random(3));
				if (!Random(20)) StartSoundEffectAt("Corrode", iX, iY);
				return true;
				}
			// Else: dead. Insert material here
			::Landscape.InsertMaterial(iPxsMat,iX,iY);
			return true;
			}
		}
	// not handled
	return false;
	}

bool C4MaterialMap::mrfIncinerate(C4MaterialReaction *pReaction, int32_t &iX, int32_t &iY, int32_t iLSPosX, int32_t iLSPosY, FIXED &fXDir, FIXED &fYDir, int32_t &iPxsMat, int32_t iLsMat, MaterialInteractionEvent evEvent, bool *pfPosChanged)
	{
	// not available as user reaction
	assert(!pReaction->fUserDefined);
	switch (evEvent)
		{
		case meeMassMove: // MassMover-movement
		case meePXSPos: // PXS check before movement
			if (::Landscape.Incinerate(iX, iY)) return true;
			break;

		case meePXSMove: // PXS movement
			// incinerate to inflammables are always same density proc; so do insertion check first
			if (!mrfInsertCheck(iX, iY, fXDir, fYDir, iPxsMat, iLsMat, pfPosChanged))
				// either splash or slide prevented interaction
				return false;
			// evaluate inflammation (should always succeed)
			if (::Landscape.Incinerate(iX, iY)) return true;
			// Else: dead. Insert material here
			::Landscape.InsertMaterial(iPxsMat,iX,iY);
			return true;
		}
	// not handled
	return false;
	}

bool C4MaterialMap::mrfInsert(C4MaterialReaction *pReaction, int32_t &iX, int32_t &iY, int32_t iLSPosX, int32_t iLSPosY, FIXED &fXDir, FIXED &fYDir, int32_t &iPxsMat, int32_t iLsMat, MaterialInteractionEvent evEvent, bool *pfPosChanged)
	{
	if (pReaction->fUserDefined) if (!mrfUserCheck(pReaction, iX, iY, iLSPosX, iLSPosY, fXDir, fYDir, iPxsMat, iLsMat, evEvent, pfPosChanged)) return false;
	switch (evEvent)
		{
		case meePXSPos: // PXS check before movement
			break;

		case meePXSMove: // PXS movement
			{
			// check for bounce/slide
			if (!pReaction->fUserDefined)
				if (!mrfInsertCheck(iX, iY, fXDir, fYDir, iPxsMat, iLsMat, pfPosChanged))
					// continue existing
					return false;
			// Else: dead. Insert material here
			::Landscape.InsertMaterial(iPxsMat,iX,iY);
			return true;
			}

		case meeMassMove: // MassMover-movement
			break;
		}
	// not handled
	return false;
	}

bool C4MaterialMap::mrfScript(C4MaterialReaction *pReaction, int32_t &iX, int32_t &iY, int32_t iLSPosX, int32_t iLSPosY, FIXED &fXDir, FIXED &fYDir, int32_t &iPxsMat, int32_t iLsMat, MaterialInteractionEvent evEvent, bool *pfPosChanged)
	{
	// do generic checks for user-defined reactions
	if (!mrfUserCheck(pReaction, iX, iY, iLSPosX, iLSPosY, fXDir, fYDir, iPxsMat, iLsMat, evEvent, pfPosChanged))
		return false;

	// check script func
	if (!pReaction->pScriptFunc) return false;
	// OK - let's call it!
	//                      0           1           2                3                        4                           5                      6               7              8
	int32_t iXDir1, iYDir1, iXDir2, iYDir2;
	C4AulParSet pars(C4VInt(iX), C4VInt(iY), C4VInt(iLSPosX), C4VInt(iLSPosY), C4VInt(iXDir1=fixtoi(fXDir, 100)), C4VInt(iYDir1=fixtoi(fYDir, 100)), C4VInt(iPxsMat), C4VInt(iLsMat), C4VInt(evEvent));
	if (!!pReaction->pScriptFunc->Exec(NULL, &pars, false))
		{
		// PXS shall be killed!
		return true;
		}
	// PXS shall exist further: write back parameters
	iPxsMat = pars[6].getInt();
	int32_t iX2 = pars[0].getInt(), iY2 = pars[1].getInt();
	iXDir2 = pars[4].getInt(); iYDir2 = pars[5].getInt();
	if (iX!=iX2 || iY!=iY2 || iXDir1!=iXDir2 || iYDir1!=iYDir2)
		{
		// changes to pos/speed detected
		if (pfPosChanged) *pfPosChanged = true;
		iX=iX2; iY=iY2;
		fXDir = FIXED100(iXDir2);
		fYDir = FIXED100(iYDir2);
		}
	// OK; done
	return false;
	}

void C4MaterialMap::UpdateScriptPointers()
	{
	// update in all materials
	for (int32_t i=0; i<Num; ++i) Map[i].UpdateScriptPointers();
	}


int32_t PixCol2MatOld(BYTE pixc)
	{
	const int C4M_ColsPerMat = 3;
	if (pixc < GBM) return MNone;
	pixc &= 63; // Substract GBM, ignore IFT
	if (pixc > ::MaterialMap.Num*C4M_ColsPerMat-1) return MNone;
	return pixc / C4M_ColsPerMat;
	}

int32_t PixCol2MatOld2(BYTE pixc)
  {
	int32_t iMat = ((int32_t) (pixc&0x7f)) -1;
	// if above MVehic, don't forget additional vehicle-colors
	if (iMat<=MVehic) return iMat;
	// equals middle vehicle-color
	if (iMat==MVehic+1) return MVehic;
	// above: range check
	iMat-=2; if (iMat >= ::MaterialMap.Num) return MNone;
	return iMat;
  }

C4MaterialMap MaterialMap;