Merge branch 'i-can-see-myself' into 'master'

Don't draw yourself in first person!

See merge request STJr/SRB2!697

src/hardware/hw_main.c

@@ -5399,7 +5399,7 @@ static void HWR_AddSprites(sector_t *sec)
 #ifdef HWPRECIP
 	precipmobj_t *precipthing;
 #endif
-	fixed_t approx_dist, limit_dist, hoop_limit_dist;
+	fixed_t limit_dist, hoop_limit_dist;
 
 	// BSP is traversed by subsector.
 	// A sector might have been split into several
@@ -5418,35 +5418,10 @@ static void HWR_AddSprites(sector_t *sec)
 	// If a limit exists, handle things a tiny bit different.
 	limit_dist = (fixed_t)(cv_drawdist.value) << FRACBITS;
 	hoop_limit_dist = (fixed_t)(cv_drawdist_nights.value) << FRACBITS;
-	if (limit_dist || hoop_limit_dist)
+	for (thing = sec->thinglist; thing; thing = thing->snext)
 	{
-		for (thing = sec->thinglist; thing; thing = thing->snext)
+		if (R_ThingVisibleWithinDist(thing, limit_dist, hoop_limit_dist))
-		{
-			if (thing->sprite == SPR_NULL || thing->flags2 & MF2_DONTDRAW)
-				continue;
-
-			approx_dist = P_AproxDistance(viewx-thing->x, viewy-thing->y);
-
-			if (thing->sprite == SPR_HOOP)
-			{
-				if (hoop_limit_dist && approx_dist > hoop_limit_dist)
-					continue;
-			}
-			else
-			{
-				if (limit_dist && approx_dist > limit_dist)
-					continue;
-			}
-
 			HWR_ProjectSprite(thing);
-		}
-	}
-	else
-	{
-		// Draw everything in sector, no checks
-		for (thing = sec->thinglist; thing; thing = thing->snext)
-			if (!(thing->sprite == SPR_NULL || thing->flags2 & MF2_DONTDRAW))
-				HWR_ProjectSprite(thing);
 	}
 
 #ifdef HWPRECIP
@@ -5455,15 +5430,8 @@ static void HWR_AddSprites(sector_t *sec)
 	{
 		for (precipthing = sec->preciplist; precipthing; precipthing = precipthing->snext)
 		{
-			if (precipthing->precipflags & PCF_INVISIBLE)
+			if (R_PrecipThingVisible(precipthing, limit_dist))
-				continue;
+				HWR_ProjectPrecipitationSprite(precipthing);
-
-			approx_dist = P_AproxDistance(viewx-precipthing->x, viewy-precipthing->y);
-
-			if (approx_dist > limit_dist)
-				continue;
-
-			HWR_ProjectPrecipitationSprite(precipthing);
 		}
 	}
 #endif
@@ -5727,7 +5695,7 @@ static void HWR_ProjectSprite(mobj_t *thing)
 	if ((thing->flags2 & MF2_LINKDRAW) && thing->tracer)
 	{
 		// bodge support - not nearly as comprehensive as r_things.c, but better than nothing
-		if (thing->tracer->sprite == SPR_NULL || thing->tracer->flags2 & MF2_DONTDRAW)
+		if (! R_ThingVisible(thing->tracer))
 			return;
 	}
 

src/r_main.c

@@ -71,6 +71,7 @@ angle_t viewangle, aimingangle;
 fixed_t viewcos, viewsin;
 sector_t *viewsector;
 player_t *viewplayer;
+mobj_t *r_viewmobj;
 
 //
 // precalculated math tables
@@ -741,8 +742,6 @@ subsector_t *R_IsPointInSubsector(fixed_t x, fixed_t y)
 // R_SetupFrame
 //
 
-static mobj_t *viewmobj;
-
 // WARNING: a should be unsigned but to add with 2048, it isn't!
 #define AIMINGTODY(a) FixedDiv((FINETANGENT((2048+(((INT32)a)>>ANGLETOFINESHIFT)) & FINEMASK)*160)>>FRACBITS, fovtan)
 
@@ -799,16 +798,16 @@ void R_SetupFrame(player_t *player)
 	if (player->awayviewtics)
 	{
 		// cut-away view stuff
-		viewmobj = player->awayviewmobj; // should be a MT_ALTVIEWMAN
+		r_viewmobj = player->awayviewmobj; // should be a MT_ALTVIEWMAN
-		I_Assert(viewmobj != NULL);
+		I_Assert(r_viewmobj != NULL);
-		viewz = viewmobj->z + 20*FRACUNIT;
+		viewz = r_viewmobj->z + 20*FRACUNIT;
 		aimingangle = player->awayviewaiming;
-		viewangle = viewmobj->angle;
+		viewangle = r_viewmobj->angle;
 	}
 	else if (!player->spectator && chasecam)
 	// use outside cam view
 	{
-		viewmobj = NULL;
+		r_viewmobj = NULL;
 		viewz = thiscam->z + (thiscam->height>>1);
 		aimingangle = thiscam->aiming;
 		viewangle = thiscam->angle;
@@ -818,11 +817,11 @@ void R_SetupFrame(player_t *player)
 	{
 		viewz = player->viewz;
 
-		viewmobj = player->mo;
+		r_viewmobj = player->mo;
-		I_Assert(viewmobj != NULL);
+		I_Assert(r_viewmobj != NULL);
 
 		aimingangle = player->aiming;
-		viewangle = viewmobj->angle;
+		viewangle = r_viewmobj->angle;
 
 		if (!demoplayback && player->playerstate != PST_DEAD)
 		{
@@ -856,13 +855,13 @@ void R_SetupFrame(player_t *player)
 	}
 	else
 	{
-		viewx = viewmobj->x;
+		viewx = r_viewmobj->x;
-		viewy = viewmobj->y;
+		viewy = r_viewmobj->y;
 		viewx += quake.x;
 		viewy += quake.y;
 
-		if (viewmobj->subsector)
+		if (r_viewmobj->subsector)
-			viewsector = viewmobj->subsector->sector;
+			viewsector = r_viewmobj->subsector->sector;
 		else
 			viewsector = R_PointInSubsector(viewx, viewy)->sector;
 	}
@@ -884,12 +883,12 @@ void R_SkyboxFrame(player_t *player)
 		thiscam = &camera;
 
 	// cut-away view stuff
-	viewmobj = skyboxmo[0];
+	r_viewmobj = skyboxmo[0];
 #ifdef PARANOIA
-	if (!viewmobj)
+	if (!r_viewmobj)
 	{
 		const size_t playeri = (size_t)(player - players);
-		I_Error("R_SkyboxFrame: viewmobj null (player %s)", sizeu1(playeri));
+		I_Error("R_SkyboxFrame: r_viewmobj null (player %s)", sizeu1(playeri));
 	}
 #endif
 	if (player->awayviewtics)
@@ -920,13 +919,13 @@ void R_SkyboxFrame(player_t *player)
 			}
 		}
 	}
-	viewangle += viewmobj->angle;
+	viewangle += r_viewmobj->angle;
 
 	viewplayer = player;
 
-	viewx = viewmobj->x;
+	viewx = r_viewmobj->x;
-	viewy = viewmobj->y;
+	viewy = r_viewmobj->y;
-	viewz = viewmobj->z; // 26/04/17: use actual Z position instead of spawnpoint angle!
+	viewz = r_viewmobj->z; // 26/04/17: use actual Z position instead of spawnpoint angle!
 
 	if (mapheaderinfo[gamemap-1])
 	{
@@ -966,29 +965,29 @@ void R_SkyboxFrame(player_t *player)
 			else if (mh->skybox_scaley < 0)
 				y = (campos.y - skyboxmo[1]->y) * -mh->skybox_scaley;
 
-			if (viewmobj->angle == 0)
+			if (r_viewmobj->angle == 0)
 			{
 				viewx += x;
 				viewy += y;
 			}
-			else if (viewmobj->angle == ANGLE_90)
+			else if (r_viewmobj->angle == ANGLE_90)
 			{
 				viewx -= y;
 				viewy += x;
 			}
-			else if (viewmobj->angle == ANGLE_180)
+			else if (r_viewmobj->angle == ANGLE_180)
 			{
 				viewx -= x;
 				viewy -= y;
 			}
-			else if (viewmobj->angle == ANGLE_270)
+			else if (r_viewmobj->angle == ANGLE_270)
 			{
 				viewx += y;
 				viewy -= x;
 			}
 			else
 			{
-				angle_t ang = viewmobj->angle>>ANGLETOFINESHIFT;
+				angle_t ang = r_viewmobj->angle>>ANGLETOFINESHIFT;
 				viewx += FixedMul(x,FINECOSINE(ang)) - FixedMul(y,  FINESINE(ang));
 				viewy += FixedMul(x,  FINESINE(ang)) + FixedMul(y,FINECOSINE(ang));
 			}
@@ -999,8 +998,8 @@ void R_SkyboxFrame(player_t *player)
 			viewz += campos.z * -mh->skybox_scalez;
 	}
 
-	if (viewmobj->subsector)
+	if (r_viewmobj->subsector)
-		viewsector = viewmobj->subsector->sector;
+		viewsector = r_viewmobj->subsector->sector;
 	else
 		viewsector = R_PointInSubsector(viewx, viewy)->sector;
 

src/r_state.h

@@ -83,6 +83,7 @@ extern fixed_t viewx, viewy, viewz;
 extern angle_t viewangle, aimingangle;
 extern sector_t *viewsector;
 extern player_t *viewplayer;
+extern mobj_t *r_viewmobj;
 
 extern consvar_t cv_allowmlook;
 extern consvar_t cv_maxportals;

src/r_things.c

@@ -1413,7 +1413,7 @@ static void R_ProjectSprite(mobj_t *thing)
 
 		thing = thing->tracer;
 
-		if (thing->sprite == SPR_NULL || thing->flags2 & MF2_DONTDRAW)
+		if (! R_ThingVisible(thing))
 			return;
 
 		tr_x = thing->x - viewx;
@@ -1808,7 +1808,7 @@ void R_AddSprites(sector_t *sec, INT32 lightlevel)
 	mobj_t *thing;
 	precipmobj_t *precipthing; // Tails 08-25-2002
 	INT32 lightnum;
-	fixed_t approx_dist, limit_dist, hoop_limit_dist;
+	fixed_t limit_dist, hoop_limit_dist;
 
 	if (rendermode != render_soft)
 		return;
@@ -1841,35 +1841,10 @@ void R_AddSprites(sector_t *sec, INT32 lightlevel)
 	// If a limit exists, handle things a tiny bit different.
 	limit_dist = (fixed_t)(cv_drawdist.value) << FRACBITS;
 	hoop_limit_dist = (fixed_t)(cv_drawdist_nights.value) << FRACBITS;
-	if (limit_dist || hoop_limit_dist)
+	for (thing = sec->thinglist; thing; thing = thing->snext)
 	{
-		for (thing = sec->thinglist; thing; thing = thing->snext)
+		if (R_ThingVisibleWithinDist(thing, limit_dist, hoop_limit_dist))
-		{
-			if (thing->sprite == SPR_NULL || thing->flags2 & MF2_DONTDRAW)
-				continue;
-
-			approx_dist = P_AproxDistance(viewx-thing->x, viewy-thing->y);
-
-			if (thing->sprite == SPR_HOOP)
-			{
-				if (hoop_limit_dist && approx_dist > hoop_limit_dist)
-					continue;
-			}
-			else
-			{
-				if (limit_dist && approx_dist > limit_dist)
-					continue;
-			}
-
 			R_ProjectSprite(thing);
-		}
-	}
-	else
-	{
-		// Draw everything in sector, no checks
-		for (thing = sec->thinglist; thing; thing = thing->snext)
-			if (!(thing->sprite == SPR_NULL || thing->flags2 & MF2_DONTDRAW))
-				R_ProjectSprite(thing);
 	}
 
 	// no, no infinite draw distance for precipitation. this option at zero is supposed to turn it off
@@ -1877,15 +1852,8 @@ void R_AddSprites(sector_t *sec, INT32 lightlevel)
 	{
 		for (precipthing = sec->preciplist; precipthing; precipthing = precipthing->snext)
 		{
-			if (precipthing->precipflags & PCF_INVISIBLE)
+			if (R_PrecipThingVisible(precipthing, limit_dist))
-				continue;
+				R_ProjectPrecipitationSprite(precipthing);
-
-			approx_dist = P_AproxDistance(viewx-precipthing->x, viewy-precipthing->y);
-
-			if (approx_dist > limit_dist)
-				continue;
-
-			R_ProjectPrecipitationSprite(precipthing);
 		}
 	}
 }
@@ -2580,6 +2548,55 @@ void R_ClipSprites(drawseg_t* dsstart, portal_t* portal)
 	}
 }
 
+/* Check if thing may be drawn from our current view. */
+boolean R_ThingVisible (mobj_t *thing)
+{
+	return (!(
+				thing->sprite == SPR_NULL ||
+				( thing->flags2 & (MF2_DONTDRAW) ) ||
+				thing == r_viewmobj
+	));
+}
+
+boolean R_ThingVisibleWithinDist (mobj_t *thing,
+		fixed_t      limit_dist,
+		fixed_t hoop_limit_dist)
+{
+	fixed_t approx_dist;
+
+	if (! R_ThingVisible(thing))
+		return false;
+
+	approx_dist = P_AproxDistance(viewx-thing->x, viewy-thing->y);
+
+	if (thing->sprite == SPR_HOOP)
+	{
+		if (hoop_limit_dist && approx_dist > hoop_limit_dist)
+			return false;
+	}
+	else
+	{
+		if (limit_dist && approx_dist > limit_dist)
+			return false;
+	}
+
+	return true;
+}
+
+/* Check if precipitation may be drawn from our current view. */
+boolean R_PrecipThingVisible (precipmobj_t *precipthing,
+		fixed_t limit_dist)
+{
+	fixed_t approx_dist;
+
+	if (( precipthing->precipflags & PCF_INVISIBLE ))
+		return false;
+
+	approx_dist = P_AproxDistance(viewx-precipthing->x, viewy-precipthing->y);
+
+	return ( approx_dist <= limit_dist );
+}
+
 //
 // R_DrawMasked
 //

src/r_things.h

@@ -61,6 +61,15 @@ void R_InitSprites(void);
 void R_ClearSprites(void);
 void R_ClipSprites(drawseg_t* dsstart, portal_t* portal);
 
+boolean R_ThingVisible (mobj_t *thing);
+
+boolean R_ThingVisibleWithinDist (mobj_t *thing,
+		fixed_t        draw_dist,
+		fixed_t nights_draw_dist);
+
+boolean R_PrecipThingVisible (precipmobj_t *precipthing,
+		fixed_t precip_draw_dist);
+
 /** Used to count the amount of masked elements
  * per portal to later group them in separate
  * drawnode lists.