- Changed the earthquake view shaking so that it works for anything and not

just players.


SVN r235 (trunk)

docs/rh-log.txt

@@ -1,3 +1,7 @@
+June 30, 2006
+- Changed the earthquake view shaking so that it works for anything and not
+  just players.
+
 July 1, 2006 (Changes by Graf Zahl)
 - Fixed: In multiplayer games, when trying to change targets, A_Chase forgot
   to check whether the new target was the same as the old one and treated 

src/d_player.h

@@ -222,7 +222,6 @@ public:
 	AActor		*attacker;				// who did damage (NULL for floors)
 	int			extralight;				// so gun flashes light up areas
 	int			fixedcolormap;			// can be set to REDCOLORMAP, etc.
-	int			xviewshift;				// [RH] view shift (for earthquakes)
 	pspdef_t	psprites[NUMPSPRITES];	// view sprites (gun, etc)
 	int			morphTics;				// player is a chicken/pig if > 0
 	AWeapon		*PremorphWeapon;		// ready weapon before morphing

src/g_shared/a_quake.cpp

@@ -6,32 +6,51 @@
 #include "m_bbox.h"
 #include "m_random.h"
 #include "s_sound.h"
+#include "a_sharedglobal.h"
+#include "statnums.h"
 
 static FRandom pr_quake ("Quake");
 
-class DEarthquake : public DThinker
-{
-	DECLARE_CLASS (DEarthquake, DThinker)
-	HAS_OBJECT_POINTERS
-public:
-	DEarthquake (AActor *center, int intensity, int duration, int damrad, int tremrad);
-
-	void Serialize (FArchive &arc);
-	void Tick ();
-
-	AActor *m_Spot;
-	fixed_t m_TremorRadius, m_DamageRadius;
-	int m_Intensity;
-	int m_Countdown;
-	int m_QuakeSFX;
-private:
-	DEarthquake () {}
-};
-
 IMPLEMENT_POINTY_CLASS (DEarthquake)
  DECLARE_POINTER (m_Spot)
 END_POINTERS
 
+//==========================================================================
+//
+// DEarthquake :: DEarthquake private constructor
+//
+//==========================================================================
+
+DEarthquake::DEarthquake()
+: DThinker(STAT_EARTHQUAKE)
+{
+}
+
+//==========================================================================
+//
+// DEarthquake :: DEarthquake public constructor
+//
+//==========================================================================
+
+DEarthquake::DEarthquake (AActor *center, int intensity, int duration,
+						  int damrad, int tremrad)
+						  : DThinker(STAT_EARTHQUAKE)
+{
+	m_QuakeSFX = S_FindSound ("world/quake");
+	m_Spot = center;
+	// Radii are specified in tile units (64 pixels)
+	m_DamageRadius = damrad << (FRACBITS+6);
+	m_TremorRadius = tremrad << (FRACBITS+6);
+	m_Intensity = intensity;
+	m_Countdown = duration;
+}
+
+//==========================================================================
+//
+// DEarthquake :: Serialize
+//
+//==========================================================================
+
 void DEarthquake::Serialize (FArchive &arc)
 {
 	Super::Serialize (arc);
@@ -40,6 +59,15 @@ void DEarthquake::Serialize (FArchive &arc)
 	m_QuakeSFX = S_FindSound ("world/quake");
 }
 
+//==========================================================================
+//
+// DEarthquake :: Tick
+//
+// Deals damage to any players near the earthquake and makes sure it's
+// making noise.
+//
+//==========================================================================
+
 void DEarthquake::Tick ()
 {
 	int i;
@@ -53,29 +81,27 @@ void DEarthquake::Tick ()
 	if (!S_GetSoundPlayingInfo (m_Spot, m_QuakeSFX))
 		S_SoundID (m_Spot, CHAN_BODY, m_QuakeSFX, 1, ATTN_NORM);
 
-	for (i = 0; i < MAXPLAYERS; i++)
+	if (m_DamageRadius > 0)
 	{
-		if (playeringame[i] && !(players[i].cheats & CF_NOCLIP))
+		for (i = 0; i < MAXPLAYERS; i++)
 		{
-			AActor *victim = players[i].mo;
-			fixed_t dist;
+			if (playeringame[i] && !(players[i].cheats & CF_NOCLIP))
+			{
+				AActor *victim = players[i].mo;
+				fixed_t dist;
 
-			dist = P_AproxDistance (victim->x - m_Spot->x, victim->y - m_Spot->y);
-			// Tested in tile units (64 pixels)
-			if (dist < m_TremorRadius)
-			{
-				players[i].xviewshift = m_Intensity;
-			}
-			// Check if in damage radius
-			if (dist < m_DamageRadius && victim->z <= victim->floorz)
-			{
-				if (pr_quake() < 50)
+				dist = P_AproxDistance (victim->x - m_Spot->x, victim->y - m_Spot->y);
+				// Check if in damage radius
+				if (dist < m_DamageRadius && victim->z <= victim->floorz)
 				{
-					P_DamageMobj (victim, NULL, NULL, pr_quake.HitDice (1), MOD_UNKNOWN);
+					if (pr_quake() < 50)
+					{
+						P_DamageMobj (victim, NULL, NULL, pr_quake.HitDice (1), MOD_UNKNOWN);
+					}
+					// Thrust player around
+					angle_t an = victim->angle + ANGLE_1*pr_quake();
+					P_ThrustMobj (victim, an, m_Intensity << (FRACBITS-1));
 				}
-				// Thrust player around
-				angle_t an = victim->angle + ANGLE_1*pr_quake();
-				P_ThrustMobj (victim, an, m_Intensity << (FRACBITS-1));
 			}
 		}
 	}
@@ -85,17 +111,44 @@ void DEarthquake::Tick ()
 	}
 }
 
-DEarthquake::DEarthquake (AActor *center, int intensity, int duration,
-						  int damrad, int tremrad)
+//==========================================================================
+//
+// DEarthquake::StaticGetQuakeIntensity
+//
+// Searches for all quakes near the victim and returns their combined
+// intensity.
+//
+//==========================================================================
+
+int DEarthquake::StaticGetQuakeIntensity (AActor *victim)
 {
-	m_QuakeSFX = S_FindSound ("world/quake");
-	m_Spot = center;
-	m_DamageRadius = damrad << (FRACBITS+6);
-	m_TremorRadius = tremrad << (FRACBITS+6);
-	m_Intensity = intensity;
-	m_Countdown = duration;
+	int intensity = 0;
+	TThinkerIterator<DEarthquake> iterator (STAT_EARTHQUAKE);
+	DEarthquake *quake;
+
+	if (victim->player != NULL && (victim->player->cheats & CF_NOCLIP))
+	{
+		return 0;
+	}
+
+	while ( (quake = iterator.Next()) != NULL)
+	{
+		fixed_t dist = P_AproxDistance (victim->x - quake->m_Spot->x,
+			victim->y - quake->m_Spot->y);
+		if (dist < quake->m_TremorRadius)
+		{
+			intensity += quake->m_Intensity;
+		}
+	}
+	return intensity;
 }
 
+//==========================================================================
+//
+// P_StartQuake
+//
+//==========================================================================
+
 bool P_StartQuake (int tid, int intensity, int duration, int damrad, int tremrad)
 {
 	AActor *center;

src/g_shared/a_sharedglobal.h

@@ -182,4 +182,26 @@ protected:
 	DFlashFader ();
 };
 
+class DEarthquake : public DThinker
+{
+	DECLARE_CLASS (DEarthquake, DThinker)
+	HAS_OBJECT_POINTERS
+public:
+	DEarthquake (AActor *center, int intensity, int duration, int damrad, int tremrad);
+
+	void Serialize (FArchive &arc);
+	void Tick ();
+
+	AActor *m_Spot;
+	fixed_t m_TremorRadius, m_DamageRadius;
+	int m_Intensity;
+	int m_Countdown;
+	int m_QuakeSFX;
+
+	static int StaticGetQuakeIntensity (AActor *viewer);
+
+private:
+	DEarthquake ();
+};
+
 #endif //__A_SHAREDGLOBAL_H__

src/p_user.cpp

@@ -115,7 +115,6 @@ player_s::player_s()
   poisoner(0),
   attacker(0),
   extralight(0),
-  xviewshift(0),
   morphTics(0),
   PremorphWeapon(0),
   chickenPeck(0),
@@ -1348,8 +1347,6 @@ void P_PlayerThink (player_t *player)
 			player->cmd.ucmd.sidemove, player->cmd.ucmd.upmove);
 	}
 
-	player->xviewshift = 0;		// [RH] Make sure view is in right place
-
 	// [RH] Zoom the player's FOV
 	if (player->FOV != player->DesiredFOV)
 	{
@@ -1728,14 +1725,12 @@ void P_PredictPlayer (player_t *player)
 	}
 	act->BlockNode = NULL;
 
-	int xviewshift = player->xviewshift;
 	for (int i = gametic; i < maxtic; ++i)
 	{
 		player->cmd = localcmds[i % LOCALCMDTICS];
 		P_PlayerThink (player);
 		player->mo->Tick ();
 	}
-	player->xviewshift = xviewshift;
 }
 
 extern msecnode_t *P_AddSecnode (sector_t *s, AActor *thing, msecnode_t *nextnode);
@@ -1825,9 +1820,13 @@ void player_s::Serialize (FArchive &arc)
 		<< poisoner
 		<< attacker
 		<< extralight
-		<< fixedcolormap
-		<< xviewshift
-		<< morphTics
+		<< fixedcolormap;
+	if (SaveVersion < 233)
+	{
+		int xviewshift;
+		arc << xviewshift;
+	}
+	arc << morphTics
 		<< PremorphWeapon
 		<< chickenPeck
 		<< jumpTics

src/r_main.cpp

@@ -45,6 +45,7 @@
 #include "i_video.h"
 #include "i_system.h"
 #include "vectors.h"
+#include "a_sharedglobal.h"
 
 // MACROS ------------------------------------------------------------------
 
@@ -1082,13 +1083,16 @@ void R_SetupFrame (AActor *actor)
 		viewz = theZ;
 	}
 
-	if (player && player->xviewshift && !paused)
+	if (!paused)
 	{
-		int intensity = player->xviewshift;
-		viewx += ((pr_torchflicker() % (intensity<<2))
-					-(intensity<<1))<<FRACBITS;
-		viewy += ((pr_torchflicker() % (intensity<<2))
-					-(intensity<<1))<<FRACBITS;
+		int intensity = DEarthquake::StaticGetQuakeIntensity (camera);
+		if (intensity != 0)
+		{
+			viewx += ((pr_torchflicker() % (intensity<<2))
+						-(intensity<<1))<<FRACBITS;
+			viewy += ((pr_torchflicker() % (intensity<<2))
+						-(intensity<<1))<<FRACBITS;
+		}
 	}
 
 	extralight = camera->player ? camera->player->extralight : 0;

src/statnums.h

@@ -54,4 +54,5 @@ enum
 	STAT_INVENTORY,							// An inventory item
 	STAT_LIGHT,								// A sector light effect
 	STAT_LIGHTTRANSFER,						// A sector light transfer. These must be ticked after the light effects!!!
+	STAT_EARTHQUAKE,						// Earthquake actors
 };

src/version.h

@@ -73,8 +73,8 @@
 // SAVEVER is the version of the information stored in level snapshots.
 // Note that SAVEVER is not directly comparable to VERSION.
 // SAVESIG should match SAVEVER.
-#define SAVEVER 232
-#define SAVESIG "ZDOOMSAVE232"
+#define SAVEVER 233
+#define SAVESIG "ZDOOMSAVE233"
 
 // This is so that derivates can use the same savegame versions without worrying about engine compatibility
 #define GAMESIG "ZDOOM"