From 0df2cb80cf03d7259746834220d209b306a8c503 Mon Sep 17 00:00:00 2001
From: Simon Howard
Date: Thu, 4 Sep 2008 23:15:36 +0000
Subject: Add GPLed Heretic/Hexen source.

Subversion-branch: /branches/raven-branch
Subversion-revision: 1195
---
 src/heretic/p_lights.c | 258 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 258 insertions(+)
 create mode 100644 src/heretic/p_lights.c

(limited to 'src/heretic/p_lights.c')

diff --git a/src/heretic/p_lights.c b/src/heretic/p_lights.c
new file mode 100644
index 00000000..30d3c409
--- /dev/null
+++ b/src/heretic/p_lights.c
@@ -0,0 +1,258 @@
+#include "DoomDef.h"
+#include "P_local.h"
+
+//==================================================================
+//==================================================================
+//
+//							BROKEN LIGHT FLASHING
+//
+//==================================================================
+//==================================================================
+
+//==================================================================
+//
+//	T_LightFlash
+//
+//	After the map has been loaded, scan each sector for specials
+//	that spawn thinkers
+//
+//==================================================================
+void T_LightFlash (lightflash_t *flash)
+{
+	if (--flash->count)
+		return;
+	
+	if (flash->sector->lightlevel == flash->maxlight)
+	{
+		flash-> sector->lightlevel = flash->minlight;
+		flash->count = (P_Random()&flash->mintime)+1;
+	}
+	else
+	{
+		flash-> sector->lightlevel = flash->maxlight;
+		flash->count = (P_Random()&flash->maxtime)+1;
+	}
+
+}
+
+
+//==================================================================
+//
+//	P_SpawnLightFlash
+//
+//	After the map has been loaded, scan each sector for specials that spawn thinkers
+//
+//==================================================================
+void P_SpawnLightFlash (sector_t *sector)
+{
+	lightflash_t	*flash;
+	
+	sector->special = 0;		// nothing special about it during gameplay
+	
+	flash = Z_Malloc ( sizeof(*flash), PU_LEVSPEC, 0);
+	P_AddThinker (&flash->thinker);
+	flash->thinker.function = T_LightFlash;
+	flash->sector = sector;
+	flash->maxlight = sector->lightlevel;
+
+	flash->minlight = P_FindMinSurroundingLight(sector,sector->lightlevel);
+	flash->maxtime = 64;
+	flash->mintime = 7;
+	flash->count = (P_Random()&flash->maxtime)+1;
+}
+
+//==================================================================
+//
+//							STROBE LIGHT FLASHING
+//
+//==================================================================
+
+//==================================================================
+//
+//	T_StrobeFlash
+//
+//	After the map has been loaded, scan each sector for specials that spawn thinkers
+//
+//==================================================================
+void T_StrobeFlash (strobe_t *flash)
+{
+	if (--flash->count)
+		return;
+	
+	if (flash->sector->lightlevel == flash->minlight)
+	{
+		flash-> sector->lightlevel = flash->maxlight;
+		flash->count = flash->brighttime;
+	}
+	else
+	{
+		flash-> sector->lightlevel = flash->minlight;
+		flash->count =flash->darktime;
+	}
+
+}
+
+//==================================================================
+//
+//	P_SpawnLightFlash
+//
+//	After the map has been loaded, scan each sector for specials that spawn thinkers
+//
+//==================================================================
+void P_SpawnStrobeFlash (sector_t *sector,int fastOrSlow, int inSync)
+{
+	strobe_t	*flash;
+	
+	flash = Z_Malloc ( sizeof(*flash), PU_LEVSPEC, 0);
+	P_AddThinker (&flash->thinker);
+	flash->sector = sector;
+	flash->darktime = fastOrSlow;
+	flash->brighttime = STROBEBRIGHT;
+	flash->thinker.function = T_StrobeFlash;
+	flash->maxlight = sector->lightlevel;
+	flash->minlight = P_FindMinSurroundingLight(sector, sector->lightlevel);
+		
+	if (flash->minlight == flash->maxlight)
+		flash->minlight = 0;
+	sector->special = 0;		// nothing special about it during gameplay
+
+	if (!inSync)
+		flash->count = (P_Random()&7)+1;
+	else
+		flash->count = 1;
+}
+
+//==================================================================
+//
+//	Start strobing lights (usually from a trigger)
+//
+//==================================================================
+void EV_StartLightStrobing(line_t *line)
+{
+	int	secnum;
+	sector_t	*sec;
+	
+	secnum = -1;
+	while ((secnum = P_FindSectorFromLineTag(line,secnum)) >= 0)
+	{
+		sec = &sectors[secnum];
+		if (sec->specialdata)
+			continue;
+	
+		P_SpawnStrobeFlash (sec,SLOWDARK, 0);
+	}
+}
+
+//==================================================================
+//
+//	TURN LINE'S TAG LIGHTS OFF
+//
+//==================================================================
+void EV_TurnTagLightsOff(line_t	*line)
+{
+	int			i;
+	int			j;
+	int			min;
+	sector_t	*sector;
+	sector_t	*tsec;
+	line_t		*templine;
+	
+	sector = sectors;
+	for (j = 0;j < numsectors; j++, sector++)
+		if (sector->tag == line->tag)
+		{
+			min = sector->lightlevel;
+			for (i = 0;i < sector->linecount; i++)
+			{
+				templine = sector->lines[i];
+				tsec = getNextSector(templine,sector);
+				if (!tsec)
+					continue;
+				if (tsec->lightlevel < min)
+					min = tsec->lightlevel;
+			}
+			sector->lightlevel = min;
+		}
+}
+
+//==================================================================
+//
+//	TURN LINE'S TAG LIGHTS ON
+//
+//==================================================================
+void EV_LightTurnOn(line_t *line, int bright)
+{
+	int			i;
+	int			j;
+	sector_t	*sector;
+	sector_t	*temp;
+	line_t		*templine;
+	
+	sector = sectors;
+	
+	for (i=0;i<numsectors;i++, sector++)
+		if (sector->tag == line->tag)
+		{
+			//
+			// bright = 0 means to search for highest
+			// light level surrounding sector
+			//
+			if (!bright)
+			{
+				for (j = 0;j < sector->linecount; j++)
+				{
+					templine = sector->lines[j];
+					temp = getNextSector(templine,sector);
+					if (!temp)
+						continue;
+					if (temp->lightlevel > bright)
+						bright = temp->lightlevel;
+				}
+			}
+			sector-> lightlevel = bright;
+		}
+}
+
+//==================================================================
+//
+//	Spawn glowing light
+//
+//==================================================================
+void T_Glow(glow_t *g)
+{
+	switch(g->direction)
+	{
+		case -1:		// DOWN
+			g->sector->lightlevel -= GLOWSPEED;
+			if (g->sector->lightlevel <= g->minlight)
+			{
+				g->sector->lightlevel += GLOWSPEED;
+				g->direction = 1;
+			}
+			break;
+		case 1:			// UP
+			g->sector->lightlevel += GLOWSPEED;
+			if (g->sector->lightlevel >= g->maxlight)
+			{
+				g->sector->lightlevel -= GLOWSPEED;
+				g->direction = -1;
+			}
+			break;
+	}
+}
+
+void P_SpawnGlowingLight(sector_t *sector)
+{
+	glow_t	*g;
+	
+	g = Z_Malloc( sizeof(*g), PU_LEVSPEC, 0);
+	P_AddThinker(&g->thinker);
+	g->sector = sector;
+	g->minlight = P_FindMinSurroundingLight(sector,sector->lightlevel);
+	g->maxlight = sector->lightlevel;
+	g->thinker.function = T_Glow;
+	g->direction = -1;
+
+	sector->special = 0;
+}
+
-- 
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