sim: Remove "continue physics" code

This was left over from 2.4x days and is not used anymore.
Now simulations are always interactive.

source/blender/blenkernel/BKE_pointcache.h

@@ -294,10 +294,6 @@ int     BKE_ptcache_read(PTCacheID *pid, float cfra);
 /* Main cache writing call. */
 int     BKE_ptcache_write(PTCacheID *pid, unsigned int cfra);
 
-/****************** Continue physics ***************/
-void BKE_ptcache_set_continue_physics(struct Main *bmain, struct Scene *scene, int enable);
-int BKE_ptcache_get_continue_physics(void);
-
 /******************* Allocate & free ***************/
 struct PointCache *BKE_ptcache_add(struct ListBase *ptcaches);
 void BKE_ptcache_free_mem(struct ListBase *mem_cache);

source/blender/blenkernel/intern/cloth.c

@@ -483,7 +483,7 @@ void clothModifier_do(ClothModifierData *clmd, Scene *scene, Object *ob, Derived
 	clmd->sim_parms->dt = clmd->sim_parms->timescale / clmd->sim_parms->stepsPerFrame;
 
 	/* handle continuous simulation with the play button */
-	if (BKE_ptcache_get_continue_physics() || ((clmd->sim_parms->preroll > 0) && (framenr > startframe - clmd->sim_parms->preroll) && (framenr < startframe))) {
+	if ((clmd->sim_parms->preroll > 0) && (framenr > startframe - clmd->sim_parms->preroll) && (framenr < startframe)) {
 		BKE_ptcache_invalidate(cache);
 
 		/* do simulation */

source/blender/blenkernel/intern/particle_system.c

@@ -4500,7 +4500,7 @@ static void system_step(ParticleSimulationData *sim, float cfra)
 	int startframe = 0, endframe = 100, oldtotpart = 0;
 
 	/* cache shouldn't be used for hair or "continue physics" */
-	if (part->type != PART_HAIR && BKE_ptcache_get_continue_physics() == 0) {
+	if (part->type != PART_HAIR) {
 		psys_clear_temp_pointcache(psys);
 
 		/* set suitable cache range automatically */

source/blender/blenkernel/intern/pointcache.c

@@ -2536,7 +2536,7 @@ int  BKE_ptcache_id_reset(Scene *scene, PTCacheID *pid, int mode)
 	after= 0;
 
 	if (mode == PTCACHE_RESET_DEPSGRAPH) {
-		if (!(cache->flag & PTCACHE_BAKED) && !BKE_ptcache_get_continue_physics()) {
+		if (!(cache->flag & PTCACHE_BAKED)) {
 
 			after= 1;
 		}
@@ -2544,12 +2544,7 @@ int  BKE_ptcache_id_reset(Scene *scene, PTCacheID *pid, int mode)
 		cache->flag |= PTCACHE_OUTDATED;
 	}
 	else if (mode == PTCACHE_RESET_BAKED) {
-		if (!BKE_ptcache_get_continue_physics()) {
+		cache->flag |= PTCACHE_OUTDATED;
-			reset= 1;
-			clear= 1;
-		}
-		else
-			cache->flag |= PTCACHE_OUTDATED;
 	}
 	else if (mode == PTCACHE_RESET_OUTDATED) {
 		reset = 1;
@@ -2695,30 +2690,6 @@ void BKE_ptcache_remove(void)
 	}
 }
 
-/* Continuous Interaction */
-
-static int CONTINUE_PHYSICS = 0;
-
-void BKE_ptcache_set_continue_physics(Main *bmain, Scene *scene, int enable)
-{
-	Object *ob;
-
-	if (CONTINUE_PHYSICS != enable) {
-		CONTINUE_PHYSICS = enable;
-
-		if (CONTINUE_PHYSICS == 0) {
-			for (ob=bmain->object.first; ob; ob=ob->id.next)
-				if (BKE_ptcache_object_reset(scene, ob, PTCACHE_RESET_OUTDATED))
-					DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
-		}
-	}
-}
-
-int  BKE_ptcache_get_continue_physics(void)
-{
-	return CONTINUE_PHYSICS;
-}
-
 /* Point Cache handling */
 
 PointCache *BKE_ptcache_add(ListBase *ptcaches)

source/blender/blenkernel/intern/softbody.c

@@ -4108,18 +4108,6 @@ void sbObjectStep(Scene *scene, Object *ob, float cfra, float (*vertexCos)[3], i
 		softbody_reset(ob, sb, vertexCos, numVerts);
 	}
 
-	/* continue physics special case */
-	if (BKE_ptcache_get_continue_physics()) {
-		BKE_ptcache_invalidate(cache);
-		/* do simulation */
-		dtime = timescale;
-		softbody_update_positions(ob, sb, vertexCos, numVerts);
-		softbody_step(scene, ob, sb, dtime);
-		softbody_to_object(ob, vertexCos, numVerts, 0);
-		sb->last_frame = framenr;
-		return;
-	}
-
 	/* still no points? go away */
 	if (sb->totpoint==0) {
 		return;

source/blender/editors/transform/transform.c

@@ -2124,12 +2124,6 @@ void transformApply(bContext *C, TransInfo *t)
 		t->state = TRANS_CONFIRM;
 	}
 
-	if (BKE_ptcache_get_continue_physics()) {
-		// TRANSFORM_FIX_ME
-		//do_screenhandlers(G.curscreen);
-		t->redraw |= TREDRAW_HARD;
-	}
-
 	t->context = NULL;
 }
 

source/blender/makesdna/DNA_space_types.h

@@ -434,7 +434,7 @@ typedef enum eScreen_Redraws_Flag {
 	TIME_WITH_SEQ_AUDIO    = (1 << 4), /* DEPRECATED */
 	TIME_SEQ               = (1 << 5),
 	TIME_ALL_IMAGE_WIN     = (1 << 6),
-	TIME_CONTINUE_PHYSICS  = (1 << 7),
+	TIME_CONTINUE_PHYSICS  = (1 << 7), /* UNUSED */
 	TIME_NODES             = (1 << 8),
 	TIME_CLIPS             = (1 << 9),
 } eScreen_Redraws_Flag;

source/blender/modifiers/intern/MOD_collision.c

@@ -137,7 +137,7 @@ static void deformVerts(ModifierData *md, Object *ob,
 		
 		numverts = dm->getNumVerts(dm);
 		
-		if ((current_time > collmd->time_xnew) || (BKE_ptcache_get_continue_physics())) {
+		if (current_time > collmd->time_xnew) {
 			unsigned int i;
 
 			/* check if mesh has changed */