Added A_QuakeEx(intensity x, y, z, duration, damrad, tremrad, sound, flags)

- Unlocks the full potential of using quakes, including the Z axis. Each intensity applies to X/Y/Z planes whenever a player is experiencing it.
- Flags:
- QF_RELATIVE - Adjusts the quaking of the camera to go in the direction its aiming (X: forward/backward. Y: Left/right.)
- Plans for including pitch will be implemented in the future for the Z axis with relativity.

src/g_shared/a_quake.cpp

@@ -33,8 +33,8 @@ DEarthquake::DEarthquake()
 //
 //==========================================================================
 
-DEarthquake::DEarthquake (AActor *center, int intensity, int duration,
-						  int damrad, int tremrad, FSoundID quakesound)
+DEarthquake::DEarthquake (AActor *center, int intensityX, int intensityY, int intensityZ, int duration,
+						  int damrad, int tremrad, FSoundID quakesound, int flags)
 						  : DThinker(STAT_EARTHQUAKE)
 {
 	m_QuakeSFX = quakesound;
@@ -42,8 +42,12 @@ DEarthquake::DEarthquake (AActor *center, int intensity, int duration,
 	// Radii are specified in tile units (64 pixels)
 	m_DamageRadius = damrad << (FRACBITS);
 	m_TremorRadius = tremrad << (FRACBITS);
-	m_Intensity = intensity;
+	m_Intensity = intensityX;
 	m_Countdown = duration;
+	m_Flags = flags;
+	m_iX = intensityX;
+	m_iY = intensityY;
+	m_iZ = intensityZ;
 }
 
 //==========================================================================
@@ -54,10 +58,10 @@ DEarthquake::DEarthquake (AActor *center, int intensity, int duration,
 
 void DEarthquake::Serialize (FArchive &arc)
 {
-	Super::Serialize (arc);
+	Super::Serialize (arc); //[MC] m_Intensity is unused now but I don't want to break compatibility...
 	arc << m_Spot << m_Intensity << m_Countdown
 		<< m_TremorRadius << m_DamageRadius
-		<< m_QuakeSFX;
+		<< m_QuakeSFX << m_Flags << m_iX << m_iY << m_iZ;
 }
 
 //==========================================================================
@@ -126,9 +130,10 @@ void DEarthquake::Tick ()
 //
 //==========================================================================
 
-int DEarthquake::StaticGetQuakeIntensity (AActor *victim)
+int DEarthquake::StaticGetQuakeIntensity (AActor *victim, int selector)
 {
 	int intensity = 0;
+	int quakeIntensity = 0;
 	TThinkerIterator<DEarthquake> iterator (STAT_EARTHQUAKE);
 	DEarthquake *quake;
 
@@ -145,32 +150,84 @@ int DEarthquake::StaticGetQuakeIntensity (AActor *victim)
 				victim->y - quake->m_Spot->y);
 			if (dist < quake->m_TremorRadius)
 			{
-				if (intensity < quake->m_Intensity)
-					intensity = quake->m_Intensity;
+				switch (selector)
+				{
+				default:
+				case 0:				
+					quakeIntensity = quake->m_iX;
+					break;
+				case 1:
+					quakeIntensity = quake->m_iY;
+					break;
+				case 2:
+					quakeIntensity = quake->m_iZ;
+					break;
+				
+				}
+
+				if (intensity < quakeIntensity)
+					intensity = quakeIntensity;
 			}
 		}
 	}
 	return intensity;
 }
 
+//==========================================================================
+//
+// DEarthquake::StaticGetQuakeIntensity
+//
+// Searches for all quakes near the victim and returns their combined
+// intensity.
+//
+//==========================================================================
+
+int DEarthquake::StaticGetQuakeFlags(AActor *victim)
+{
+	int flags = 0;
+	TThinkerIterator<DEarthquake> iterator(STAT_EARTHQUAKE);
+	DEarthquake *quake;
+
+	if (victim->player != NULL && (victim->player->cheats & CF_NOCLIP))
+	{
+		return 0;
+	}
+
+	while ((quake = iterator.Next()) != NULL)
+	{
+		if (quake->m_Spot != NULL)
+		{
+			fixed_t dist = P_AproxDistance(victim->x - quake->m_Spot->x,
+				victim->y - quake->m_Spot->y);
+			if (dist < quake->m_TremorRadius)
+			{
+				if (!(flags & QF_RELATIVE) && (quake->m_Flags & QF_RELATIVE))
+					flags += QF_RELATIVE;
+			}
+		}
+	}
+	return flags;
+}
 //==========================================================================
 //
 // P_StartQuake
 //
 //==========================================================================
 
-bool P_StartQuake (AActor *activator, int tid, int intensity, int duration, int damrad, int tremrad, FSoundID quakesfx)
+bool P_StartQuakeXYZ(AActor *activator, int tid, int intensityX, int intensityY, int intensityZ, int duration, int damrad, int tremrad, FSoundID quakesfx, int flags)
 {
 	AActor *center;
 	bool res = false;
 
-	intensity = clamp (intensity, 1, 9);
+	if (intensityX)		intensityX = clamp(intensityX, 1, 9);
+	if (intensityY)		intensityY = clamp(intensityY, 1, 9);
+	if (intensityZ)		intensityZ = clamp(intensityZ, 1, 9);
 
 	if (tid == 0)
 	{
 		if (activator != NULL)
 		{
-			new DEarthquake(activator, intensity, duration, damrad, tremrad, quakesfx);
+			new DEarthquake(activator, intensityX, intensityY, intensityZ, duration, damrad, tremrad, quakesfx, flags);
 			return true;
 		}
 	}
@@ -180,9 +237,14 @@ bool P_StartQuake (AActor *activator, int tid, int intensity, int duration, int
 		while ( (center = iterator.Next ()) )
 		{
 			res = true;
-			new DEarthquake (center, intensity, duration, damrad, tremrad, quakesfx);
+			new DEarthquake(center, intensityX, intensityY, intensityZ, duration, damrad, tremrad, quakesfx, flags);
 		}
 	}
 	
 	return res;
 }
+
+bool P_StartQuake(AActor *activator, int tid, int intensity, int duration, int damrad, int tremrad, FSoundID quakesfx)
+{	//Maintains original behavior by passing 0 to intensityZ, and flags.
+	return P_StartQuakeXYZ(activator, tid, intensity, intensity, 0, duration, damrad, tremrad, quakesfx, 0);
+}

src/g_shared/a_sharedglobal.h

@@ -131,23 +131,31 @@ protected:
 	DFlashFader ();
 };
 
+enum
+{
+	QF_RELATIVE = 1,
+};
+
 class DEarthquake : public DThinker
 {
 	DECLARE_CLASS (DEarthquake, DThinker)
 	HAS_OBJECT_POINTERS
 public:
-	DEarthquake (AActor *center, int intensity, int duration, int damrad, int tremrad, FSoundID quakesfx);
+	DEarthquake(AActor *center, int intensityX, int intensityY, int intensityZ, int duration, int damrad, int tremrad, FSoundID quakesfx, int flags);
 
 	void Serialize (FArchive &arc);
 	void Tick ();
-
 	TObjPtr<AActor> m_Spot;
 	fixed_t m_TremorRadius, m_DamageRadius;
 	int m_Intensity;
 	int m_Countdown;
 	FSoundID m_QuakeSFX;
+	int m_Flags;
+	int m_iX, m_iY, m_iZ;
+
+	static int StaticGetQuakeFlags(AActor *viewer);
+	static int StaticGetQuakeIntensity (AActor *viewer, int selector);
 	
-	static int StaticGetQuakeIntensity (AActor *viewer);
 
 private:
 	DEarthquake ();

src/p_spec.h

@@ -929,6 +929,7 @@ void P_DoDeferedScripts (void);
 //
 // [RH] p_quake.c
 //
-bool P_StartQuake (AActor *activator, int tid, int intensity, int duration, int damrad, int tremrad, FSoundID quakesfx);
+bool P_StartQuakeXYZ(AActor *activator, int tid, int intensityX, int intensityY, int intensityZ, int duration, int damrad, int tremrad, FSoundID quakesfx, int flags);
+bool P_StartQuake(AActor *activator, int tid, int intensity, int duration, int damrad, int tremrad, FSoundID quakesfx);
 
 #endif

src/r_utility.cpp

@@ -875,13 +875,37 @@ void R_SetupFrame (AActor *actor)
 
 	if (!paused)
 	{
-		int intensity = DEarthquake::StaticGetQuakeIntensity (camera);
-		if (intensity != 0)
+		int intensityX = DEarthquake::StaticGetQuakeIntensity(camera, 0);
+		int intensityY = DEarthquake::StaticGetQuakeIntensity(camera, 1);
+		int intensityZ = DEarthquake::StaticGetQuakeIntensity(camera, 2);
+		int quakeflags = DEarthquake::StaticGetQuakeFlags(camera);
+		if (intensityX || intensityY || intensityZ)
 		{
 			fixed_t quakefactor = FLOAT2FIXED(r_quakeintensity);
 
-			viewx += quakefactor * ((pr_torchflicker() % (intensity<<2)) - (intensity<<1));
-			viewy += quakefactor * ((pr_torchflicker() % (intensity<<2)) - (intensity<<1));
+			if ((quakeflags & QF_RELATIVE) && (intensityX != intensityY))
+			{
+				if (intensityX)
+				{
+					int ang = (camera->angle) >> ANGLETOFINESHIFT;
+					int tflicker = pr_torchflicker();
+					viewx += FixedMul(finecosine[ang], (quakefactor * ((tflicker % (intensityX << 2)) - (intensityX << 1))));
+					viewy += FixedMul(finesine[ang], (quakefactor * ((tflicker % (intensityX << 2)) - (intensityX << 1))));
+				}
+				if (intensityY)
+				{
+					int ang = (camera->angle + ANG90) >> ANGLETOFINESHIFT;
+					int tflicker = pr_torchflicker();
+					viewx += FixedMul(finecosine[ang], (quakefactor * ((tflicker % (intensityY << 2)) - (intensityY << 1))));
+					viewy += FixedMul(finesine[ang], (quakefactor * ((tflicker % (intensityY << 2)) - (intensityY << 1))));
+				}
+			}
+			else
+			{
+				if (intensityX)	viewx += quakefactor * ((pr_torchflicker() % (intensityX << 2)) - (intensityX << 1));
+				if (intensityY)	viewy += quakefactor * ((pr_torchflicker() % (intensityY << 2)) - (intensityY << 1));
+			}
+			if (intensityZ)	viewz += quakefactor * ((pr_torchflicker() % (intensityZ << 2)) - (intensityZ << 1));
 		}
 	}
 

src/thingdef/thingdef_codeptr.cpp

@@ -4403,6 +4403,28 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_Quake)
 	P_StartQuake(self, 0, intensity, duration, damrad, tremrad, sound);
 }
 
+//===========================================================================
+//
+// A_QuakeEx
+//
+// Extended version of A_Quake. Takes individual axis into account and can
+// take a flag.
+//===========================================================================
+
+DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_QuakeEx)
+{
+	ACTION_PARAM_START(8);
+	ACTION_PARAM_INT(intensityX, 0);
+	ACTION_PARAM_INT(intensityY, 1);
+	ACTION_PARAM_INT(intensityZ, 2);
+	ACTION_PARAM_INT(duration, 3);
+	ACTION_PARAM_INT(damrad, 4);
+	ACTION_PARAM_INT(tremrad, 5);
+	ACTION_PARAM_SOUND(sound, 6);
+	ACTION_PARAM_INT(flags, 7);
+	P_StartQuakeXYZ(self, 0, intensityX, intensityY, intensityZ, duration, damrad, tremrad, sound, flags);
+}
+
 //===========================================================================
 //
 // A_Weave

wadsrc/static/actors/actor.txt

@@ -299,6 +299,7 @@ ACTOR Actor native //: Thinker
 	action native A_SetUserArray(name varname, int index, int value);
 	action native A_SetSpecial(int spec, int arg0 = 0, int arg1 = 0, int arg2 = 0, int arg3 = 0, int arg4 = 0);
 	action native A_Quake(int intensity, int duration, int damrad, int tremrad, sound sfx = "world/quake");
+	action native A_QuakeEx(int intensityX, int intensityY, int intensityZ, int duration, int damrad, int tremrad, sound sfx = "world/quake", int flags = 0);
 	action native A_SetTics(int tics);
 	action native A_SetDamageType(name damagetype);
 	action native A_DropItem(class<Actor> item, int dropamount = -1, int chance = 256);

wadsrc/static/actors/constants.txt

@@ -457,6 +457,11 @@ enum
 	FAF_NODISTFACTOR = 8,
 };
 
+// Flags for A_QuakeEx
+enum
+{
+	QF_RELATIVE = 1,
+};
 
 // This is only here to provide one global variable for testing.
 native int testglobalvar;