diff --git a/src/simulation/Simulation.cpp b/src/simulation/Simulation.cpp
index e46681dae..8dff706f8 100644
--- a/src/simulation/Simulation.cpp
+++ b/src/simulation/Simulation.cpp
@@ -3230,34 +3230,12 @@ void Simulation::update_particles_i(int start, int inc)
 	int h_count = 0;
 	int surround[8];
 	int surround_hconduct[8];
-	int lighting_ok=1;
 	unsigned int elem_properties;
 	float pGravX, pGravY, pGravD;
 	int excessive_stacking_found = 0;
 
 	currentTick++;
 
-	if (lighting_recreate>0)
-    {
-        for (i=0; i<=parts_lastActiveIndex; i++)
-        {
-            if (parts[i].type==PT_LIGH && parts[i].tmp2>0)
-            {
-                lighting_ok=0;
-                break;
-            }
-        }
-    }
-
-	if (lighting_ok)
-        lighting_recreate--;
-
-    if (lighting_recreate<0)
-        lighting_recreate=1;
-
-    if (lighting_recreate>21)
-        lighting_recreate=21;
-
 	//if (sys_pause&&!framerender)//do nothing if paused
 	//	return;
 
@@ -3815,7 +3793,7 @@ void Simulation::update_particles_i(int start, int inc)
 					if ((t==PT_ICEI || t==PT_SNOW) && (parts[i].ctype<=0 || parts[i].ctype>=PT_NUM || parts[i].ctype==PT_ICEI || parts[i].ctype==PT_SNOW || !elements[parts[i].ctype].Enabled))
 						parts[i].ctype = PT_WATR;
 
-					if (ctemph>elements[t].HighTemperature && elements[t].HighTemperatureTransition>-1)
+					if (elements[t].HighTemperatureTransition>-1 && ctemph>elements[t].HighTemperature)
 					{
 						// particle type change due to high temperature
 #ifdef REALISTIC
@@ -3911,7 +3889,7 @@ void Simulation::update_particles_i(int start, int inc)
 						else
 							s = 0;
 					}
-					else if (ctempl<elements[t].LowTemperature && elements[t].LowTemperatureTransition > -1)
+					else if (elements[t].LowTemperatureTransition > -1 && ctempl<elements[t].LowTemperature)
 					{
 						// particle type change due to low temperature
 #ifdef REALISTIC
@@ -4095,7 +4073,7 @@ void Simulation::update_particles_i(int start, int inc)
 
 			s = 1;
 			gravtot = fabs(gravy[(y/CELL)*(XRES/CELL)+(x/CELL)])+fabs(gravx[(y/CELL)*(XRES/CELL)+(x/CELL)]);
-			if (pv[y/CELL][x/CELL]>elements[t].HighPressure&&elements[t].HighPressureTransition>-1) {
+			if (elements[t].HighPressureTransition>-1 && pv[y/CELL][x/CELL]>elements[t].HighPressure) {
 				// particle type change due to high pressure
 				if (elements[t].HighPressureTransition!=PT_NUM)
 					t = elements[t].HighPressureTransition;
@@ -4107,12 +4085,12 @@ void Simulation::update_particles_i(int start, int inc)
 					else s = 0;
 				}
 				else s = 0;
-			} else if (pv[y/CELL][x/CELL]<elements[t].LowPressure&&elements[t].LowPressureTransition>-1) {
+			} else if (elements[t].LowPressureTransition>-1 && pv[y/CELL][x/CELL]<elements[t].LowPressure) {
 				// particle type change due to low pressure
 				if (elements[t].LowPressureTransition!=PT_NUM)
 					t = elements[t].LowPressureTransition;
 				else s = 0;
-			} else if (gravtot>(elements[t].HighPressure/4.0f)&&elements[t].HighPressureTransition>-1) {
+			} else if (elements[t].HighPressureTransition>-1 && gravtot>(elements[t].HighPressure/4.0f)) {
 				// particle type change due to high gravity
 				if (elements[t].HighPressureTransition!=PT_NUM)
 					t = elements[t].HighPressureTransition;
@@ -4125,12 +4103,16 @@ void Simulation::update_particles_i(int start, int inc)
 				}
 				else s = 0;
 			} else s = 0;
-			if (s) { // particle type change occurred
+
+			// particle type change occurred
+			if (s)
+			{
 				parts[i].life = 0;
 				part_change_type(i,x,y,t);
 				if (t==PT_FIRE)
 					parts[i].life = rand()%50+120;
-				if (t==PT_NONE) {
+				if (t==PT_NONE)
+				{
 					kill_part(i);
 					goto killed;
 				}
@@ -4781,7 +4763,6 @@ Simulation::Simulation():
 	pretty_powder(0),
 	sandcolour_frame(0),
 	emp_decor(0),
-	lighting_recreate(0),
 	force_stacking_check(0),
 	ISWIRE(0),
 	gravWallChanged(false),
diff --git a/src/simulation/Simulation.h b/src/simulation/Simulation.h
index 4c4ee953c..31185f614 100644
--- a/src/simulation/Simulation.h
+++ b/src/simulation/Simulation.h
@@ -66,7 +66,6 @@ public:
 	playerst player2;
 	playerst fighters[256]; //255 is the maximum number of fighters
 	unsigned char fighcount; //Contains the number of fighters
-	int lighting_recreate;
 	bool gravWallChanged;
 	//Portals and Wifi
 	Particle portalp[CHANNELS][8][80];