- Added endsize parameter and SPF_NOTIMEFREEZE for A_SpawnParticle.

SPF_NOTIMEFREEZE processes particles with this flag regardless of time freeze. The endsize parameter changes the scale of the particle to that size throughout its lifetime linearly.

src/p_acs.cpp

@@ -6048,7 +6048,7 @@ doplaysound:			if (funcIndex == ACSF_PlayActorSound)
 			PalEntry color = args[0];
 			bool fullbright = argCount > 1 ? !!args[1] : false;
 			int lifetime = argCount > 2 ? args[2] : 35;
-			int size = argCount > 3 ? args[3] : 1;
+			double size = argCount > 3 ? args[3] : 1.;
 			int x = argCount > 4 ? args[4] : 0;
 			int y = argCount > 5 ? args[5] : 0;
 			int z = argCount > 6 ? args[6] : 0;
@@ -6060,17 +6060,18 @@ doplaysound:			if (funcIndex == ACSF_PlayActorSound)
 			int accelz = argCount > 12 ? args[12] : 0;
 			int startalpha = argCount > 13 ? args[13] : 0xFF; // Byte trans			
 			int fadestep = argCount > 14 ? args[14] : -1;
+			double endsize = argCount > 15 ? args[15] : -1.;
 
 			startalpha = clamp<int>(startalpha, 0, 255); // Clamp to byte
 			lifetime = clamp<int>(lifetime, 0, 255); // Clamp to byte
 			fadestep = clamp<int>(fadestep, -1, 255); // Clamp to byte inc. -1 (indicating automatic)
-			size = clamp<int>(size, 0, 65535); // Clamp to word
+			size = fabs(size);
 
 			if (lifetime != 0)
 				P_SpawnParticle(DVector3(ACSToDouble(x), ACSToDouble(y), ACSToDouble(z)), 
 								DVector3(ACSToDouble(xvel), ACSToDouble(yvel), ACSToDouble(zvel)),
 								DVector3(ACSToDouble(accelx), ACSToDouble(accely), ACSToDouble(accelz)),
-								color, fullbright, startalpha/255., lifetime, size, fadestep/255.);
+								color, startalpha/255., lifetime, size, endsize, fadestep/255., fullbright);
 		}
 		break;
 

src/p_effect.cpp

@@ -252,7 +252,6 @@ void P_InitEffects ()
 	blood2 = ParticleColor(RPART(kind)/3, GPART(kind)/3, BPART(kind)/3);
 }
 
-
 void P_ThinkParticles ()
 {
 	int i;
@@ -262,13 +261,19 @@ void P_ThinkParticles ()
 	prev = NULL;
 	while (i != NO_PARTICLE)
 	{
-		BYTE oldtrans;
-
 		particle = Particles + i;
 		i = particle->tnext;
+
+		if (!particle->notimefreeze && ((bglobal.freeze) || (level.flags2 & LEVEL2_FROZEN)))
+		{
+			continue;
+		}
+
+		BYTE oldtrans;
 		oldtrans = particle->trans;
 		particle->trans -= particle->fade;
-		if (oldtrans < particle->trans || --particle->ttl == 0)
+		particle->size += particle->sizestep;
+		if (oldtrans < particle->trans || --particle->ttl <= 0 || (particle->size <= 0))
 		{ // The particle has expired, so free it
 			memset (particle, 0, sizeof(particle_t));
 			if (prev)
@@ -309,8 +314,14 @@ void P_ThinkParticles ()
 	}
 }
 
+enum PSFlag
+{
+	PS_FULLBRIGHT =		1,
+	PS_NOTIMEFREEZE =	1 << 5,
+};
 
-void P_SpawnParticle(const DVector3 &pos, const DVector3 &vel, const DVector3 &accel, PalEntry color, bool fullbright, double startalpha, int lifetime, WORD size, double fadestep)
+void P_SpawnParticle(const DVector3 &pos, const DVector3 &vel, const DVector3 &accel, PalEntry color, double startalpha, int lifetime, double size, 
+	double fadestep, double endsize, int flags)
 {
 	particle_t *particle = NewParticle();
 
@@ -324,8 +335,10 @@ void P_SpawnParticle(const DVector3 &pos, const DVector3 &vel, const DVector3 &a
 		if (fadestep < 0) particle->fade = FADEFROMTTL(lifetime);
 		else particle->fade = int(fadestep * 255);
 		particle->ttl = lifetime;
-		particle->bright = fullbright;
+		particle->bright = !!(flags & PS_FULLBRIGHT);
-		particle->size = (WORD)size;
+		particle->size = size;
+		particle->sizestep = (lifetime == 0) ? 0 : ((endsize - size) / lifetime);
+		particle->notimefreeze = !!(flags & PS_NOTIMEFREEZE);
 	}
 }
 

src/p_effect.h

@@ -59,13 +59,15 @@ struct particle_t
 	DVector3 Acc;
 	BYTE	ttl;
 	BYTE	trans;
-	WORD	size;
+	double	size;
+	double	sizestep;
 	BYTE	bright;
 	BYTE	fade;
 	int		color;
 	WORD	tnext;
 	WORD	snext;
 	subsector_t * subsector;
+	bool	notimefreeze;
 };
 
 extern particle_t *Particles;
@@ -83,7 +85,7 @@ particle_t *JitterParticle (int ttl);
 particle_t *JitterParticle (int ttl, double drift);
 
 void P_ThinkParticles (void);
-void P_SpawnParticle(const DVector3 &pos, const DVector3 &vel, const DVector3 &accel, PalEntry color, bool fullbright, double startalpha, int lifetime, WORD size, double fadestep);
+void P_SpawnParticle(const DVector3 &pos, const DVector3 &vel, const DVector3 &accel, PalEntry color, double startalpha, int lifetime, double size, double fadestep, double endsize, int flags = 0);
 void P_InitEffects (void);
 void P_RunEffects (void);
 

src/p_tick.cpp

@@ -117,10 +117,7 @@ void P_Ticker (void)
 	// Since things will be moving, it's okay to interpolate them in the renderer.
 	r_NoInterpolate = false;
 
-	if (!bglobal.freeze && !(level.flags2 & LEVEL2_FROZEN))
-	{
 	P_ThinkParticles();	// [RH] make the particles think
-	}
 
 	for (i = 0; i<MAXPLAYERS; i++)
 		if (playeringame[i] &&

src/thingdef/thingdef_codeptr.cpp

@@ -3147,6 +3147,7 @@ enum SPFflag
 	SPF_RELVEL =			1 << 2,
 	SPF_RELACCEL =			1 << 3,
 	SPF_RELANG =			1 << 4,
+	SPF_NOTIMEFREEZE =		1 << 5,
 };
 
 DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SpawnParticle)
@@ -3155,7 +3156,7 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SpawnParticle)
 	PARAM_COLOR		(color);
 	PARAM_INT_OPT	(flags)			{ flags = 0; }
 	PARAM_INT_OPT	(lifetime)		{ lifetime = 35; }
-	PARAM_INT_OPT	(size)			{ size = 1; }
+	PARAM_FLOAT_OPT	(size)			{ size = 1.; }
 	PARAM_ANGLE_OPT	(angle)			{ angle = 0.; }
 	PARAM_FLOAT_OPT	(xoff)			{ xoff = 0; }
 	PARAM_FLOAT_OPT	(yoff)			{ yoff = 0; }
@@ -3168,11 +3169,11 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SpawnParticle)
 	PARAM_FLOAT_OPT	(accelz)		{ accelz = 0; }
 	PARAM_FLOAT_OPT	(startalpha)	{ startalpha = 1.; }
 	PARAM_FLOAT_OPT	(fadestep)		{ fadestep = -1.; }
+	PARAM_FLOAT_OPT (endsize)		{ endsize = -1.; }
 
 	startalpha = clamp(startalpha, 0., 1.);
 	if (fadestep > 0) fadestep = clamp(fadestep, 0., 1.);
-	size = clamp<int>(size, 0, 65535);			// Clamp to word
+	size = fabs(size);
-
 	if (lifetime != 0)
 	{
 		if (flags & SPF_RELANG) angle += self->Angles.Yaw;
@@ -3199,7 +3200,7 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SpawnParticle)
 			acc.X = accelx * c + accely * s;
 			acc.Y = accelx * s - accely * c;
 		}
-		P_SpawnParticle(self->Vec3Offset(pos), vel, acc, color, !!(flags & SPF_FULLBRIGHT), startalpha, lifetime, size, fadestep);
+		P_SpawnParticle(self->Vec3Offset(pos), vel, acc, color, startalpha, lifetime, size, fadestep, endsize, flags);
 	}
 	return 0;
 }

wadsrc/static/actors/actor.txt

@@ -214,7 +214,7 @@ ACTOR Actor native //: Thinker
 	native void A_SetScale(float scalex, float scaley = 0, int ptr = AAPTR_DEFAULT, bool usezero = false);
 	native void A_SetMass(int mass);
 	native void A_SpawnDebris(class<Actor> spawntype, bool transfer_translation = false, float mult_h = 1, float mult_v = 1);
-	native void A_SpawnParticle(color color1, int flags = 0, int lifetime = 35, int size = 1, float angle = 0, float xoff = 0, float yoff = 0, float zoff = 0, float velx = 0, float vely = 0, float velz = 0, float accelx = 0, float accely = 0, float accelz = 0, float startalphaf = 1, float fadestepf = -1);
+	native void A_SpawnParticle(color color1, int flags = 0, int lifetime = 35, float size = 1, float angle = 0, float xoff = 0, float yoff = 0, float zoff = 0, float velx = 0, float vely = 0, float velz = 0, float accelx = 0, float accely = 0, float accelz = 0, float startalphaf = 1, float fadestepf = -1, float endsize = -1);
 	native state A_CheckSight(state label);
 	native void A_ExtChase(bool usemelee, bool usemissile, bool playactive = true, bool nightmarefast = false);
 	native void A_DropInventory(class<Inventory> itemtype);

wadsrc/static/actors/constants.txt

@@ -539,6 +539,7 @@ enum
 	SPF_RELVEL =		1 << 2,
 	SPF_RELACCEL =		1 << 3,
 	SPF_RELANG =		1 << 4,
+	SPF_NOTIMEFREEZE =	1 << 5,
 
 	SPF_RELATIVE =	SPF_RELPOS|SPF_RELVEL|SPF_RELACCEL|SPF_RELANG
 };