
//**************************************************************************
//**
//** p_spec.c : Heretic 2 : Raven Software, Corp.
//**
//** $RCSfile: p_spec.c,v $
//** $Revision: 1.67 $
//** $Date: 96/01/06 18:37:33 $
//** $Author: bgokey $
//**
//**************************************************************************

// HEADER FILES ------------------------------------------------------------

#include "h2def.h"
#include "p_local.h"
#include "soundst.h"

// MACROS ------------------------------------------------------------------

#define MAX_TAGGED_LINES 64

// TYPES -------------------------------------------------------------------

// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------

// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------

// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------

static boolean CheckedLockedDoor(mobj_t *mo, byte lock);

// EXTERNAL DATA DECLARATIONS ----------------------------------------------

// PUBLIC DATA DEFINITIONS -------------------------------------------------

int *TerrainTypes;
struct
{
	char *name;
	int type;
} STRUCTSPACKED TerrainTypeDefs[] =
{
	{ "X_005", FLOOR_WATER },
	{ "X_001", FLOOR_LAVA },
	{ "X_009", FLOOR_SLUDGE },
	{ "F_033", FLOOR_ICE },
	{ "END", -1 }
};

// PRIVATE DATA DEFINITIONS ------------------------------------------------

static struct
{
	line_t *line;
	int lineTag;
} STRUCTSPACKED TaggedLines[MAX_TAGGED_LINES];
static int TaggedLineCount;

mobj_t LavaInflictor;

// CODE --------------------------------------------------------------------

//==========================================================================
//
// P_InitLava
//
//==========================================================================

void P_InitLava(void)
{
	memset(&LavaInflictor, 0, sizeof(mobj_t));
	LavaInflictor.type = MT_CIRCLEFLAME;
	LavaInflictor.flags2 = MF2_FIREDAMAGE|MF2_NODMGTHRUST;
}

//==========================================================================
//
// P_InitTerrainTypes
//
//==========================================================================

void P_InitTerrainTypes(void)
{
	int i;
	int lump;
	int size;

	size = (numflats+1)*sizeof(int);
	TerrainTypes = Z_Malloc(size, PU_STATIC, 0);
	memset(TerrainTypes, 0, size);
	for(i = 0; TerrainTypeDefs[i].type != -1; i++)
	{
		lump = W_CheckNumForName(TerrainTypeDefs[i].name);
		if(lump != -1)
		{
			TerrainTypes[lump-firstflat] = TerrainTypeDefs[i].type;
		}
	}
}

//==========================================================================
//
// getSide
//
// Will return a side_t* given the number of the current sector, the
// line number, and the side (0/1) that you want.
//
//==========================================================================

/*
side_t *getSide(int currentSector, int line, int side)
{
	return &sides[ (sectors[currentSector].lines[line])->sidenum[side] ];
}
*/

//==========================================================================
//
// getSector
//
// Will return a sector_t* given the number of the current sector, the
// line number, and the side (0/1) that you want.
//
//==========================================================================

/*
sector_t *getSector(int currentSector, int line, int side)
{
	return sides[ (sectors[currentSector].lines[line])->sidenum[side] ].sector;
}
*/

//==========================================================================
//
// twoSided
//
// Given the sector number and the line number, will tell you whether
// the line is two-sided or not.
//
//==========================================================================

/*
int     twoSided(int sector, int line)
{
	return (sectors[sector].lines[line])->flags & ML_TWOSIDED;
}
*/

//==================================================================
//
//      Return sector_t * of sector next to current. NULL if not two-sided line
//
//==================================================================
sector_t *getNextSector(line_t *line,sector_t *sec)
{
	if (!(line->flags & ML_TWOSIDED))
		return NULL;

	if (line->frontsector == sec)
		return line->backsector;

	return line->frontsector;
}

//==================================================================
//
//      FIND LOWEST FLOOR HEIGHT IN SURROUNDING SECTORS
//
//==================================================================
fixed_t P_FindLowestFloorSurrounding(sector_t *sec)
{
	int                     i;
	line_t          *check;
	sector_t        *other;
	fixed_t         floor = sec->floorheight;

	for (i=0 ;i < sec->linecount ; i++)
	{
		check = sec->lines[i];
		other = getNextSector(check,sec);
		if (!other)
			continue;
		if (other->floorheight < floor)
			floor = other->floorheight;
	}
	return floor;
}

//==================================================================
//
//      FIND HIGHEST FLOOR HEIGHT IN SURROUNDING SECTORS
//
//==================================================================
fixed_t P_FindHighestFloorSurrounding(sector_t *sec)
{
	int                     i;
	line_t          *check;
	sector_t        *other;
	fixed_t         floor = -500*FRACUNIT;

	for (i=0 ;i < sec->linecount ; i++)
	{
		check = sec->lines[i];
		other = getNextSector(check,sec);
		if (!other)
			continue;
		if (other->floorheight > floor)
			floor = other->floorheight;
	}
	return floor;
}

//==================================================================
//
//      FIND NEXT HIGHEST FLOOR IN SURROUNDING SECTORS
//
//==================================================================
fixed_t P_FindNextHighestFloor(sector_t *sec,int currentheight)
{
	int                     i;
	int                     h;
	int                     min;
	line_t          *check;
	sector_t        *other;
	fixed_t         height = currentheight;
	fixed_t         heightlist[20];         // 20 adjoining sectors max!

	for (i =0,h = 0 ;i < sec->linecount ; i++)
	{
		check = sec->lines[i];
		other = getNextSector(check,sec);
		if (!other)
			continue;
		if (other->floorheight > height)
			heightlist[h++] = other->floorheight;
	}

	//
	// Find lowest height in list
	//
	min = heightlist[0];
	for (i = 1;i < h;i++)
		if (heightlist[i] < min)
			min = heightlist[i];

	return min;
}

//==================================================================
//
//      FIND LOWEST CEILING IN THE SURROUNDING SECTORS
//
//==================================================================
fixed_t P_FindLowestCeilingSurrounding(sector_t *sec)
{
	int                     i;
	line_t          *check;
	sector_t        *other;
	fixed_t         height = MAXINT;

	for (i=0 ;i < sec->linecount ; i++)
	{
		check = sec->lines[i];
		other = getNextSector(check,sec);
		if (!other)
			continue;
		if (other->ceilingheight < height)
			height = other->ceilingheight;
	}
	return height;
}

//==================================================================
//
//      FIND HIGHEST CEILING IN THE SURROUNDING SECTORS
//
//==================================================================
fixed_t P_FindHighestCeilingSurrounding(sector_t *sec)
{
	int     i;
	line_t  *check;
	sector_t        *other;
	fixed_t height = 0;

	for (i=0 ;i < sec->linecount ; i++)
	{
		check = sec->lines[i];
		other = getNextSector(check,sec);
		if (!other)
			continue;
		if (other->ceilingheight > height)
			height = other->ceilingheight;
	}
	return height;
}

//==================================================================
//
//      RETURN NEXT SECTOR # THAT LINE TAG REFERS TO
//
//==================================================================

/*
int     P_FindSectorFromLineTag(line_t  *line,int start)
{
	int     i;

	for (i=start+1;i<numsectors;i++)
		if (sectors[i].tag == line->arg1)
			return i;
	return -1;
}
*/

//=========================================================================
//
// P_FindSectorFromTag
//
//=========================================================================

int P_FindSectorFromTag(int tag, int start)
{
	int i;
	
	for(i = start+1; i < numsectors; i++)
	{
		if(sectors[i].tag == tag)
		{
			return i;
		}
	}
	return -1;
}

//==================================================================
//
//      Find minimum light from an adjacent sector
//
//==================================================================

/*
int     P_FindMinSurroundingLight(sector_t *sector,int max)
{
	int                     i;
	int                     min;
	line_t          *line;
	sector_t        *check;

	min = max;
	for (i=0 ; i < sector->linecount ; i++)
	{
		line = sector->lines[i];
		check = getNextSector(line,sector);
		if (!check)
			continue;
		if (check->lightlevel < min)
			min = check->lightlevel;
	}
	return min;
}
*/

//=========================================================================
//
// EV_SectorSoundChange
//
//=========================================================================

boolean EV_SectorSoundChange(byte *args)
{
	int secNum;
	boolean rtn;

	if(!args[0])
	{
		return false;
	}
	secNum = -1;
	rtn = false;
	while((secNum = P_FindSectorFromTag(args[0], secNum)) >= 0)
	{
		sectors[secNum].seqType = args[1];
		rtn = true;
	}
	return rtn;
}

//============================================================================
//
// CheckedLockedDoor
//
//============================================================================

static boolean CheckedLockedDoor(mobj_t *mo, byte lock)
{
	extern char *TextKeyMessages[11];
	char LockedBuffer[80];

	if(!mo->player)
	{
		return false;
	}
	if(!lock)
	{	
		return true;
	}
	if(!(mo->player->keys&(1<<(lock-1))))
	{
		sprintf(LockedBuffer, "YOU NEED THE %s\n", 
			TextKeyMessages[lock-1]);
		P_SetMessage(mo->player, LockedBuffer, true);
		S_StartSound(mo, SFX_DOOR_LOCKED);
		return false;
	}
	return true;
}


//==========================================================================
//
// EV_LineSearchForPuzzleItem
//
//==========================================================================

boolean EV_LineSearchForPuzzleItem(line_t *line, byte *args, mobj_t *mo)
{
	player_t *player;
	int i;
	artitype_t type,arti;

	if (!mo) return false;
	player = mo->player;
	if (!player) return false;

	// Search player's inventory for puzzle items
	for (i=0; i<player->artifactCount; i++)
	{
		arti = player->inventory[i].type;
		type = arti - arti_firstpuzzitem;
		if (type < 0) continue;
		if (type == line->arg1)
		{
			// A puzzle item was found for the line
			if (P_UseArtifact(player, arti))
			{
				// A puzzle item was found for the line
				P_PlayerRemoveArtifact(player, i);
				if(player == &players[consoleplayer])
				{
					if(arti < arti_firstpuzzitem)
					{
						S_StartSound(NULL, SFX_ARTIFACT_USE);
					}
					else
					{
						S_StartSound(NULL, SFX_PUZZLE_SUCCESS);
					}
					ArtifactFlash = 4;
				}
				return true;
			}
		}
	}
	return false;
}



/*
==============================================================================

							EVENTS

Events are operations triggered by using, crossing, or shooting special lines, or by timed thinkers

==============================================================================
*/
//============================================================================
//
// P_ExecuteLineSpecial
//
//============================================================================

boolean P_ExecuteLineSpecial(int special, byte *args, line_t *line, int side,
	mobj_t *mo)
{
	boolean buttonSuccess;

	buttonSuccess = false;
	switch(special)
	{
		case 1: // Poly Start Line
			break;
		case 2: // Poly Rotate Left
			buttonSuccess = EV_RotatePoly(line, args, 1, false);
			break;
		case 3: // Poly Rotate Right
			buttonSuccess = EV_RotatePoly(line, args, -1, false);
			break;
		case 4: // Poly Move
			buttonSuccess = EV_MovePoly(line, args, false, false);
			break;
		case 5: // Poly Explicit Line:  Only used in initialization
			break;
		case 6: // Poly Move Times 8
			buttonSuccess = EV_MovePoly(line, args, true, false);
			break;
		case 7: // Poly Door Swing
			buttonSuccess = EV_OpenPolyDoor(line, args, PODOOR_SWING);
			break;
		case 8: // Poly Door Slide
			buttonSuccess = EV_OpenPolyDoor(line, args, PODOOR_SLIDE);
			break;
		case 10: // Door Close
			buttonSuccess = EV_DoDoor(line, args, DREV_CLOSE);
			break;
		case 11: // Door Open
			if(!args[0])
			{
				buttonSuccess = EV_VerticalDoor(line, mo);
			}
			else
			{
				buttonSuccess = EV_DoDoor(line, args, DREV_OPEN);
			}
			break;
		case 12: // Door Raise
			if(!args[0])
			{
				buttonSuccess = EV_VerticalDoor(line, mo);
			}
			else
			{
				buttonSuccess = EV_DoDoor(line, args, DREV_NORMAL);
			}
			break;
		case 13: // Door Locked_Raise
			if(CheckedLockedDoor(mo, args[3]))
			{
				if(!args[0])
				{
					buttonSuccess = EV_VerticalDoor(line, mo);
				}
				else
				{
					buttonSuccess = EV_DoDoor(line, args, DREV_NORMAL);
				}
			}
			break;
		case 20: // Floor Lower by Value
			buttonSuccess = EV_DoFloor(line, args, FLEV_LOWERFLOORBYVALUE);
			break;
		case 21: // Floor Lower to Lowest
			buttonSuccess = EV_DoFloor(line, args, FLEV_LOWERFLOORTOLOWEST);
			break;
		case 22: // Floor Lower to Nearest
			buttonSuccess = EV_DoFloor(line, args, FLEV_LOWERFLOOR);
			break;
		case 23: // Floor Raise by Value
			buttonSuccess = EV_DoFloor(line, args, FLEV_RAISEFLOORBYVALUE);
			break;
		case 24: // Floor Raise to Highest
			buttonSuccess = EV_DoFloor(line, args, FLEV_RAISEFLOOR);
			break;
		case 25: // Floor Raise to Nearest
			buttonSuccess = EV_DoFloor(line, args, FLEV_RAISEFLOORTONEAREST);
			break;
		case 26: // Stairs Build Down Normal
			buttonSuccess = EV_BuildStairs(line, args, -1, STAIRS_NORMAL);
			break;
		case 27: // Build Stairs Up Normal
			buttonSuccess = EV_BuildStairs(line, args, 1, STAIRS_NORMAL);
			break;
		case 28: // Floor Raise and Crush
			buttonSuccess = EV_DoFloor(line, args, FLEV_RAISEFLOORCRUSH);
			break;
		case 29: // Build Pillar (no crushing)
			buttonSuccess = EV_BuildPillar(line, args, false);
			break;
		case 30: // Open Pillar
			buttonSuccess = EV_OpenPillar(line, args);
			break;
		case 31: // Stairs Build Down Sync
			buttonSuccess = EV_BuildStairs(line, args, -1, STAIRS_SYNC);
			break;
		case 32: // Build Stairs Up Sync
			buttonSuccess = EV_BuildStairs(line, args, 1, STAIRS_SYNC);
			break;
		case 35: // Raise Floor by Value Times 8
			buttonSuccess = EV_DoFloor(line, args, FLEV_RAISEBYVALUETIMES8);
			break;
		case 36: // Lower Floor by Value Times 8
			buttonSuccess = EV_DoFloor(line, args, FLEV_LOWERBYVALUETIMES8);
			break;
		case 40: // Ceiling Lower by Value
			buttonSuccess = EV_DoCeiling(line, args, CLEV_LOWERBYVALUE);
			break;
		case 41: // Ceiling Raise by Value
			buttonSuccess = EV_DoCeiling(line, args, CLEV_RAISEBYVALUE);
			break;
		case 42: // Ceiling Crush and Raise
			buttonSuccess = EV_DoCeiling(line, args, CLEV_CRUSHANDRAISE);
			break;
		case 43: // Ceiling Lower and Crush
			buttonSuccess = EV_DoCeiling(line, args, CLEV_LOWERANDCRUSH);
			break;
		case 44: // Ceiling Crush Stop
			buttonSuccess = EV_CeilingCrushStop(line, args);
			break;
		case 45: // Ceiling Crush Raise and Stay
			buttonSuccess = EV_DoCeiling(line, args, CLEV_CRUSHRAISEANDSTAY);
			break;
		case 46: // Floor Crush Stop
			buttonSuccess = EV_FloorCrushStop(line, args);
			break;
		case 60: // Plat Perpetual Raise
			buttonSuccess = EV_DoPlat(line, args, PLAT_PERPETUALRAISE, 0);
			break;
		case 61: // Plat Stop
			EV_StopPlat(line, args);
			break;
		case 62: // Plat Down-Wait-Up-Stay
			buttonSuccess = EV_DoPlat(line, args, PLAT_DOWNWAITUPSTAY, 0);
			break;
		case 63: // Plat Down-by-Value*8-Wait-Up-Stay
			buttonSuccess = EV_DoPlat(line, args, PLAT_DOWNBYVALUEWAITUPSTAY,
				0);
			break;
		case 64: // Plat Up-Wait-Down-Stay
			buttonSuccess = EV_DoPlat(line, args, PLAT_UPWAITDOWNSTAY, 0);
			break;
		case 65: // Plat Up-by-Value*8-Wait-Down-Stay
			buttonSuccess = EV_DoPlat(line, args, PLAT_UPBYVALUEWAITDOWNSTAY,
				0);
			break;
		case 66: // Floor Lower Instant * 8
			buttonSuccess = EV_DoFloor(line, args, FLEV_LOWERTIMES8INSTANT);
			break;
		case 67: // Floor Raise Instant * 8
			buttonSuccess = EV_DoFloor(line, args, FLEV_RAISETIMES8INSTANT);
			break;
		case 68: // Floor Move to Value * 8
			buttonSuccess = EV_DoFloor(line, args, FLEV_MOVETOVALUETIMES8);
			break;
		case 69: // Ceiling Move to Value * 8
			buttonSuccess = EV_DoCeiling(line, args, CLEV_MOVETOVALUETIMES8);
			break;
		case 70: // Teleport
			if(side == 0)
			{ // Only teleport when crossing the front side of a line
				buttonSuccess = EV_Teleport(args[0], mo, true);
			}
			break;
		case 71: // Teleport, no fog
			if(side == 0)
			{ // Only teleport when crossing the front side of a line
				buttonSuccess = EV_Teleport(args[0], mo, false);
			}
			break;
		case 72: // Thrust Mobj
			if(!side) // Only thrust on side 0
			{
				P_ThrustMobj(mo, args[0]*(ANGLE_90/64), args[1]<<FRACBITS);
				buttonSuccess = 1;
			}
			break;
		case 73: // Damage Mobj
			if(args[0])
			{
				P_DamageMobj(mo, NULL, NULL, args[0]);
			}
			else
			{ // If arg1 is zero, then guarantee a kill
				P_DamageMobj(mo, NULL, NULL, 10000);
			}
			buttonSuccess = 1;
			break;
		case 74: // Teleport_NewMap
			if(side == 0)
			{ // Only teleport when crossing the front side of a line
				if(!(mo && mo->player && mo->player->playerstate
					== PST_DEAD)) // Players must be alive to teleport
				{
					G_Completed(args[0], args[1]);
					buttonSuccess = true;
				}
			}
			break;
		case 75: // Teleport_EndGame
			if(side == 0)
			{ // Only teleport when crossing the front side of a line
				if(!(mo && mo->player && mo->player->playerstate
					== PST_DEAD)) // Players must be alive to teleport
				{
					buttonSuccess = true;
					if(deathmatch)
					{ // Winning in deathmatch just goes back to map 1
						G_Completed(1, 0);
					}
					else
					{ // Passing -1, -1 to G_Completed() starts the Finale
						G_Completed(-1, -1);
					}
				}
			}
			break;
		case 80: // ACS_Execute
			buttonSuccess =
				P_StartACS(args[0], args[1], &args[2], mo, line, side);
			break;
		case 81: // ACS_Suspend
			buttonSuccess = P_SuspendACS(args[0], args[1]);
			break;
		case 82: // ACS_Terminate
			buttonSuccess = P_TerminateACS(args[0], args[1]);
			break;
		case 83: // ACS_LockedExecute
			buttonSuccess = P_StartLockedACS(line, args, mo, side);
			break;
		case 90: // Poly Rotate Left Override
			buttonSuccess = EV_RotatePoly(line, args, 1, true);
			break;
		case 91: // Poly Rotate Right Override
			buttonSuccess = EV_RotatePoly(line, args, -1, true);
			break;
		case 92: // Poly Move Override
			buttonSuccess = EV_MovePoly(line, args, false, true);
			break;
		case 93: // Poly Move Times 8 Override
			buttonSuccess = EV_MovePoly(line, args, true, true);
			break;
		case 94: // Build Pillar Crush 
			buttonSuccess = EV_BuildPillar(line, args, true);
			break;
		case 95: // Lower Floor and Ceiling
			buttonSuccess = EV_DoFloorAndCeiling(line, args, false);
			break;
		case 96: // Raise Floor and Ceiling
			buttonSuccess = EV_DoFloorAndCeiling(line, args, true);
			break;
		case 109: // Force Lightning
			buttonSuccess = true;
			P_ForceLightning();
			break;
		case 110: // Light Raise by Value
			buttonSuccess = EV_SpawnLight(line, args, LITE_RAISEBYVALUE);
			break; 
		case 111: // Light Lower by Value
			buttonSuccess = EV_SpawnLight(line, args, LITE_LOWERBYVALUE);
			break; 
		case 112: // Light Change to Value
			buttonSuccess = EV_SpawnLight(line, args, LITE_CHANGETOVALUE);
			break; 
		case 113: // Light Fade
			buttonSuccess = EV_SpawnLight(line, args, LITE_FADE);
			break; 
		case 114: // Light Glow
			buttonSuccess = EV_SpawnLight(line, args, LITE_GLOW);
			break; 
		case 115: // Light Flicker
			buttonSuccess = EV_SpawnLight(line, args, LITE_FLICKER);
			break; 
		case 116: // Light Strobe
			buttonSuccess = EV_SpawnLight(line, args, LITE_STROBE);
			break; 
		case 120: // Quake Tremor
			buttonSuccess = A_LocalQuake(args, mo);
			break;
		case 129: // UsePuzzleItem
			buttonSuccess = EV_LineSearchForPuzzleItem(line, args, mo);
			break;
		case 130: // Thing_Activate
			buttonSuccess = EV_ThingActivate(args[0]);
			break;
		case 131: // Thing_Deactivate
			buttonSuccess = EV_ThingDeactivate(args[0]);
			break;
		case 132: // Thing_Remove
			buttonSuccess = EV_ThingRemove(args[0]);
			break;
		case 133: // Thing_Destroy
			buttonSuccess = EV_ThingDestroy(args[0]);
			break;
		case 134: // Thing_Projectile
			buttonSuccess = EV_ThingProjectile(args, 0);
			break;
		case 135: // Thing_Spawn
			buttonSuccess = EV_ThingSpawn(args, 1);
			break;
		case 136: // Thing_ProjectileGravity
			buttonSuccess = EV_ThingProjectile(args, 1);
			break;
		case 137: // Thing_SpawnNoFog
			buttonSuccess = EV_ThingSpawn(args, 0);
			break;
		case 138: // Floor_Waggle
			buttonSuccess = EV_StartFloorWaggle(args[0], args[1],
				args[2], args[3], args[4]);
			break;
		case 140: // Sector_SoundChange
			buttonSuccess = EV_SectorSoundChange(args);
			break;

		// Line specials only processed during level initialization
		// 100: Scroll_Texture_Left
		// 101: Scroll_Texture_Right
		// 102: Scroll_Texture_Up
		// 103: Scroll_Texture_Down
		// 121: Line_SetIdentification

		// Inert Line specials
		default:
			break;
	}
	return buttonSuccess;
}

//============================================================================
//
// P_ActivateLine
//
//============================================================================

boolean P_ActivateLine(line_t *line, mobj_t *mo, int side, int activationType)
{
	int lineActivation;
	boolean repeat;
	boolean buttonSuccess;

	lineActivation = GET_SPAC(line->flags);
	if(lineActivation != activationType)
	{
		return false;
	}
	if(!mo->player && !(mo->flags&MF_MISSILE))
	{
		if(lineActivation != SPAC_MCROSS)
		{ // currently, monsters can only activate the MCROSS activation type
 			return false;
		}
		if(line->flags & ML_SECRET)
			return false;           // never open secret doors
	}
	repeat = line->flags&ML_REPEAT_SPECIAL;
	buttonSuccess = false;

	buttonSuccess = P_ExecuteLineSpecial(line->special, &line->arg1, line,
		side, mo);
	if(!repeat && buttonSuccess)
	{ // clear the special on non-retriggerable lines
		line->special = 0;
	}
	if((lineActivation == SPAC_USE || lineActivation == SPAC_IMPACT) 
		&& buttonSuccess)
	{
		P_ChangeSwitchTexture(line, repeat);
	}
	return true;
}

//----------------------------------------------------------------------------
//
// PROC P_PlayerInSpecialSector
//
// Called every tic frame that the player origin is in a special sector.
//
//----------------------------------------------------------------------------

void P_PlayerInSpecialSector(player_t *player)
{
	sector_t *sector;
	static int pushTab[3] =
	{
		2048*5,
		2048*10,
		2048*25
	};

	sector = player->mo->subsector->sector;
	if(player->mo->z != sector->floorheight)
	{ // Player is not touching the floor
		return;
	}
	switch(sector->special)
	{
		case 9: // SecretArea
			player->secretcount++;
			sector->special = 0;
			break;

		case 201: case 202: case 203: // Scroll_North_xxx
			P_Thrust(player, ANG90, pushTab[sector->special-201]);
			break;
		case 204: case 205: case 206: // Scroll_East_xxx
			P_Thrust(player, 0, pushTab[sector->special-204]);
			break;
		case 207: case 208: case 209: // Scroll_South_xxx
			P_Thrust(player, ANG270, pushTab[sector->special-207]);
			break;
		case 210: case 211: case 212: // Scroll_West_xxx
			P_Thrust(player, ANG180, pushTab[sector->special-210]);
			break;
		case 213: case 214: case 215: // Scroll_NorthWest_xxx
			P_Thrust(player, ANG90+ANG45, pushTab[sector->special-213]);
			break;
		case 216: case 217: case 218: // Scroll_NorthEast_xxx
			P_Thrust(player, ANG45, pushTab[sector->special-216]);
			break;
		case 219: case 220: case 221: // Scroll_SouthEast_xxx
			P_Thrust(player, ANG270+ANG45, pushTab[sector->special-219]);
			break;
		case 222: case 223: case 224: // Scroll_SouthWest_xxx
			P_Thrust(player, ANG180+ANG45, pushTab[sector->special-222]);
			break;

		case 40: case 41: case 42: case 43: case 44: case 45:
		case 46: case 47: case 48: case 49: case 50: case 51:
			// Wind specials are handled in (P_mobj):P_XYMovement
			break;

		case 26: // Stairs_Special1
		case 27: // Stairs_Special2
			// Used in (P_floor):ProcessStairSector
			break;

		case 198: // Lightning Special
		case 199: // Lightning Flash special
		case 200: // Sky2
			// Used in (R_plane):R_Drawplanes
			break;
		default:
			I_Error("P_PlayerInSpecialSector: "
				"unknown special %i", sector->special);
	}
}

//============================================================================
//
// P_PlayerOnSpecialFlat
//
//============================================================================

void P_PlayerOnSpecialFlat(player_t *player, int floorType)
{
	if(player->mo->z != player->mo->floorz)
	{ // Player is not touching the floor
		return;
	}
	switch(floorType)
	{
		case FLOOR_LAVA:
			if(!(leveltime&31))
			{
				P_DamageMobj(player->mo, &LavaInflictor, NULL, 10);
				S_StartSound(player->mo, SFX_LAVA_SIZZLE);
			}
			break;
		default:
			break;
	}
}

//----------------------------------------------------------------------------
//
// PROC P_UpdateSpecials
//
//----------------------------------------------------------------------------

void P_UpdateSpecials(void)
{
	int i;

	// Handle buttons
	for(i = 0; i < MAXBUTTONS; i++)
	{
		if(buttonlist[i].btimer)
		{
			buttonlist[i].btimer--;
			if(!buttonlist[i].btimer)
			{
				switch(buttonlist[i].where)
				{
					case SWTCH_TOP:
						sides[buttonlist[i].line->sidenum[0]].toptexture =
							buttonlist[i].btexture;
						break;
					case SWTCH_MIDDLE:
						sides[buttonlist[i].line->sidenum[0]].midtexture =
							buttonlist[i].btexture;
						break;
					case SWTCH_BOTTOM:
						sides[buttonlist[i].line->sidenum[0]].bottomtexture =
							buttonlist[i].btexture;
						break;
				}
				//S_StartSound((mobj_t *)&buttonlist[i].soundorg, sfx_switch);
				memset(&buttonlist[i], 0, sizeof(button_t));
			}
		}
	}
}

/*
==============================================================================

							SPECIAL SPAWNING

==============================================================================
*/
/*
================================================================================
= P_SpawnSpecials
=
= After the map has been loaded, scan for specials that
= spawn thinkers
=
===============================================================================
*/

short   numlinespecials;
line_t  *linespeciallist[MAXLINEANIMS];

void P_SpawnSpecials (void)
{
	sector_t        *sector;
	int             i;

	//
	//      Init special SECTORs
	//
	sector = sectors;
	for (i=0 ; i<numsectors ; i++, sector++)
	{
		if (!sector->special)
			continue;
		switch (sector->special)
		{
			case 1: // Phased light
				// Hardcoded base, use sector->lightlevel as the index
				P_SpawnPhasedLight(sector, 80, -1);
				break;
			case 2: // Phased light sequence start
				P_SpawnLightSequence(sector, 1);
				break;
			// Specials 3 & 4 are used by the phased light sequences

			/*
			case 1:         // FLICKERING LIGHTS
				P_SpawnLightFlash (sector);
				break;
			case 2:         // STROBE FAST
				P_SpawnStrobeFlash(sector,FASTDARK,0);
				break;
			case 3:         // STROBE SLOW
				P_SpawnStrobeFlash(sector,SLOWDARK,0);
				break;
			case 4:         // STROBE FAST/DEATH SLIME
				P_SpawnStrobeFlash(sector,FASTDARK,0);
				sector->special = 4;
				break;
			case 8:         // GLOWING LIGHT
				P_SpawnGlowingLight(sector);
				break;
			case 9:         // SECRET SECTOR
				totalsecret++;
				break;
			case 10:        // DOOR CLOSE IN 30 SECONDS
				P_SpawnDoorCloseIn30 (sector);
				break;
			case 12:        // SYNC STROBE SLOW
				P_SpawnStrobeFlash (sector, SLOWDARK, 1);
				break;
			case 13:        // SYNC STROBE FAST
				P_SpawnStrobeFlash (sector, FASTDARK, 1);
				break;
			case 14:        // DOOR RAISE IN 5 MINUTES
				P_SpawnDoorRaiseIn5Mins (sector, i);
				break;
			*/
		}
	}


	//
	//      Init line EFFECTs
	//
	numlinespecials = 0;
	TaggedLineCount = 0;
	for(i = 0; i < numlines; i++)
	{
		switch(lines[i].special)
		{
			case 100: // Scroll_Texture_Left
			case 101: // Scroll_Texture_Right
			case 102: // Scroll_Texture_Up
			case 103: // Scroll_Texture_Down
				linespeciallist[numlinespecials] = &lines[i];
				numlinespecials++;
				break;
			case 121: // Line_SetIdentification
				if(lines[i].arg1)
				{
					if(TaggedLineCount == MAX_TAGGED_LINES)
					{
						I_Error("P_SpawnSpecials: MAX_TAGGED_LINES "
							"(%d) exceeded.", MAX_TAGGED_LINES);
					}
					TaggedLines[TaggedLineCount].line = &lines[i];
					TaggedLines[TaggedLineCount++].lineTag
						= lines[i].arg1;
				}
				lines[i].special = 0;
				break;
		}
	}

	//
	//      Init other misc stuff
	//
	for (i = 0;i < MAXCEILINGS;i++)
		activeceilings[i] = NULL;
	for (i = 0;i < MAXPLATS;i++)
		activeplats[i] = NULL;
	for (i = 0;i < MAXBUTTONS;i++)
		memset(&buttonlist[i],0,sizeof(button_t));

	// Initialize flat and texture animations
	P_InitFTAnims();
}

//==========================================================================
//
// P_FindLine
//
//==========================================================================

line_t *P_FindLine(int lineTag, int *searchPosition)
{
	int i;

	for(i = *searchPosition+1; i < TaggedLineCount; i++)
	{
		if(TaggedLines[i].lineTag == lineTag)
		{
			*searchPosition = i;
			return TaggedLines[i].line;
		}
	}
	*searchPosition = -1;
	return NULL;
}
