diff --git a/includes/graphics.h b/includes/graphics.h
index d028e9bfa..6d9a27311 100644
--- a/includes/graphics.h
+++ b/includes/graphics.h
@@ -114,6 +114,8 @@ void xor_rect(pixel *vid, int x, int y, int w, int h);
 
 void draw_parts(pixel *vid);
 
+void draw_walls(pixel *vid);
+
 void draw_decorations(pixel *vid_buf,pixel *decorations);
 
 void draw_wavelengths(pixel *vid, int x, int y, int h, int wl);
diff --git a/includes/interface.h b/includes/interface.h
index 9dc07f886..cadffd930 100644
--- a/includes/interface.h
+++ b/includes/interface.h
@@ -12,36 +12,6 @@ struct menu_section
 };
 typedef struct menu_section menu_section;
 
-struct menu_wall
-{
-	pixel colour;
-	const char *descs;
-};
-typedef struct menu_wall menu_wall;
-
-static menu_wall mwalls[] =
-{
-	{PIXPACK(0xC0C0C0), "Wall. Indestructible. Blocks everything. Conductive."},
-	{PIXPACK(0x808080), "E-Wall. Becomes transparent when electricity is connected."},
-	{PIXPACK(0xFF8080), "Detector. Generates electricity when a particle is inside."},
-	{PIXPACK(0x808080), "Streamline. Set start point of a streamline."},
-	{PIXPACK(0x808080), "Sign. Click on a sign to edit it or anywhere else to place a new one."},
-	{PIXPACK(0x8080FF), "Fan. Accelerates air. Use line tool to set direction and strength."},
-	{PIXPACK(0xC0C0C0), "Wall. Blocks most particles but lets liquids through. Conductive."},
-	{PIXPACK(0x808080), "Wall. Absorbs particles but lets air currents through."},
-	{PIXPACK(0x808080), "Erases walls."},
-	{PIXPACK(0x808080), "Wall. Indestructible. Blocks everything."},
-	{PIXPACK(0x3C3C3C), "Wall. Indestructible. Blocks particles, allows air"},
-	{PIXPACK(0x575757), "Wall. Indestructible. Blocks liquids and gasses, allows solids"},
-	{PIXPACK(0xFFFF22), "Conductor, allows particles, conducts electricity"},
-	{PIXPACK(0x242424), "E-Hole, absorbs particles, release them when powered"},
-	{PIXPACK(0xFFFFFF), "Air, creates airflow and pressure"},
-	{PIXPACK(0xFFBB00), "Heats the targetted element."},
-	{PIXPACK(0x00BBFF), "Cools the targetted element."},
-	{PIXPACK(0x303030), "Vacuum, reduces air pressure."},
-	{PIXPACK(0x579777), "Wall. Indestructible. Blocks liquids and solids, allows gasses"},
-};
-
 #define SC_WALL 0
 #define SC_SPECIAL 8
 #define SC_POWDERS 5
diff --git a/includes/powder.h b/includes/powder.h
index 5d71e8f19..66c7f8a07 100644
--- a/includes/powder.h
+++ b/includes/powder.h
@@ -782,6 +782,39 @@ static int lolzrule[9][9] =
 	{0,1,0,0,0,0,0,1,0},
 	{0,1,0,0,0,0,0,1,0},
 };
+
+struct wall_type
+{
+	pixel colour;
+	pixel eglow; // if emap set, add this to fire glow
+	int drawstyle;
+	const char *descs;
+};
+typedef struct wall_type wall_type;
+
+static wall_type wtypes[] =
+{
+	{PIXPACK(0xC0C0C0), PIXPACK(0x101010), 0, "Wall. Indestructible. Blocks everything. Conductive."},
+	{PIXPACK(0x808080), PIXPACK(0x808080), 0, "E-Wall. Becomes transparent when electricity is connected."},
+	{PIXPACK(0xFF8080), PIXPACK(0xFF2008), 1, "Detector. Generates electricity when a particle is inside."},
+	{PIXPACK(0x808080), PIXPACK(0x000000), 0, "Streamline. Set start point of a streamline."},
+	{PIXPACK(0x808080), PIXPACK(0x000000), 0, "Sign. Click on a sign to edit it or anywhere else to place a new one."},
+	{PIXPACK(0x8080FF), PIXPACK(0x000000), 1, "Fan. Accelerates air. Use line tool to set direction and strength."},
+	{PIXPACK(0xC0C0C0), PIXPACK(0x101010), 2, "Wall. Blocks most particles but lets liquids through. Conductive."},
+	{PIXPACK(0x808080), PIXPACK(0x000000), 1, "Wall. Absorbs particles but lets air currents through."},
+	{PIXPACK(0x808080), PIXPACK(0x000000), 1, "Erases walls."},
+	{PIXPACK(0x808080), PIXPACK(0x000000), 3, "Wall. Indestructible. Blocks everything."},
+	{PIXPACK(0x3C3C3C), PIXPACK(0x000000), 1, "Wall. Indestructible. Blocks particles, allows air"},
+	{PIXPACK(0x575757), PIXPACK(0x000000), 1, "Wall. Indestructible. Blocks liquids and gasses, allows solids"},
+	{PIXPACK(0xFFFF22), PIXPACK(0x101010), 2, "Conductor, allows particles, conducts electricity"},
+	{PIXPACK(0x242424), PIXPACK(0x101010), 0, "E-Hole, absorbs particles, release them when powered"},
+	{PIXPACK(0xFFFFFF), PIXPACK(0x000000), -1, "Air, creates airflow and pressure"},
+	{PIXPACK(0xFFBB00), PIXPACK(0x000000), -1, "Heats the targetted element."},
+	{PIXPACK(0x00BBFF), PIXPACK(0x000000), -1, "Cools the targetted element."},
+	{PIXPACK(0x303030), PIXPACK(0x000000), -1, "Vacuum, reduces air pressure."},
+	{PIXPACK(0x579777), PIXPACK(0x000000), 1, "Wall. Indestructible. Blocks liquids and solids, allows gasses"},
+};
+
 #define CHANNELS ((int)(MAX_TEMP-73.15f)/100+2)
 particle portalp[CHANNELS][8][80];
 const particle emptyparticle;
diff --git a/src/graphics.c b/src/graphics.c
index 8a52e16a5..a3fde2c49 100644
--- a/src/graphics.c
+++ b/src/graphics.c
@@ -3063,6 +3063,174 @@ void draw_parts(pixel *vid)
 #endif
 
 }
+void draw_walls(pixel *vid)
+{
+	int x, y, i, j, cr, cg, cb;
+	unsigned char wt;
+	pixel pc;
+	for (y=0; y<YRES/CELL; y++)
+		for (x=0; x<XRES/CELL; x++)
+			if (bmap[y][x])
+			{
+				wt = bmap[y][x]-UI_ACTUALSTART;
+				pc = wtypes[wt].colour;
+
+				// standard wall patterns
+				if (wtypes[wt].drawstyle==1)
+				{
+					for (j=0; j<CELL; j+=2)
+						for (i=(j>>1)&1; i<CELL; i+=2)
+							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = pc;
+				}
+				else if (wtypes[wt].drawstyle==2)
+				{
+					for (j=0; j<CELL; j+=2)
+						for (i=0; i<CELL; i+=2)
+							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = pc;
+				}
+				else if (wtypes[wt].drawstyle==3)
+				{
+					for (j=0; j<CELL; j++)
+						for (i=0; i<CELL; i++)
+							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = pc;
+				}
+
+				// special rendering for some walls
+				if (bmap[y][x]==WL_EWALL)
+				{
+					if (emap[y][x])
+					{
+						for (j=0; j<CELL; j++)
+							for (i=0; i<CELL; i++)
+								if (i&j&1)
+									vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = pc;
+					}
+					else
+					{
+						for (j=0; j<CELL; j++)
+							for (i=0; i<CELL; i++)
+								if (!(i&j&1))
+									vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = pc;
+					}
+				}
+				else if (bmap[y][x]==WL_WALLELEC)
+				{
+					for (j=0; j<CELL; j++)
+						for (i=0; i<CELL; i++)
+						{
+							if (!((y*CELL+j)%2) && !((x*CELL+i)%2))
+								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = pc;
+							else
+								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x808080);
+						}
+				}
+				else if (bmap[y][x]==WL_EHOLE)
+				{
+					if (emap[y][x])
+					{
+						for (j=0; j<CELL; j++)
+							for (i=0; i<CELL; i++)
+								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x242424);
+						for (j=0; j<CELL; j+=2)
+							for (i=0; i<CELL; i+=2)
+								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x000000);
+					}
+					else
+					{
+						for (j=0; j<CELL; j+=2)
+							for (i=0; i<CELL; i+=2)
+								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x242424);
+					}
+				}
+				
+				if (cmode==CM_BLOB)
+				{
+					// when in blob view, draw some blobs...
+					if (wtypes[wt].drawstyle==1)
+					{
+						for (j=0; j<CELL; j+=2)
+							for (i=(j>>1)&1; i<CELL; i+=2)
+								drawblob(vid, (x*CELL+i), (y*CELL+j), PIXR(pc), PIXG(pc), PIXB(pc));
+					}
+					else if (wtypes[wt].drawstyle==2)
+					{
+						for (j=0; j<CELL; j+=2)
+							for (i=0; i<CELL; i+=2)
+								drawblob(vid, (x*CELL+i), (y*CELL+j), PIXR(pc), PIXG(pc), PIXB(pc));
+					}
+					else if (wtypes[wt].drawstyle==3)
+					{
+						for (j=0; j<CELL; j++)
+							for (i=0; i<CELL; i++)
+								drawblob(vid, (x*CELL+i), (y*CELL+j), PIXR(pc), PIXG(pc), PIXB(pc));
+					}
+
+					if (bmap[y][x]==WL_EWALL)
+					{
+						if (emap[y][x])
+						{
+							for (j=0; j<CELL; j++)
+								for (i=0; i<CELL; i++)
+									if (i&j&1)
+										drawblob(vid, (x*CELL+i), (y*CELL+j), 0x80, 0x80, 0x80);
+						}
+						else
+						{
+							for (j=0; j<CELL; j++)
+								for (i=0; i<CELL; i++)
+									if (!(i&j&1))
+										drawblob(vid, (x*CELL+i), (y*CELL+j), 0x80, 0x80, 0x80);
+						}
+					}
+					else if (bmap[y][x]==WL_WALLELEC)
+					{
+						for (j=0; j<CELL; j++)
+							for (i=0; i<CELL; i++)
+							{
+								if (!((y*CELL+j)%2) && !((x*CELL+i)%2))
+									drawblob(vid, (x*CELL+i), (y*CELL+j), PIXR(pc), PIXG(pc), PIXB(pc));
+								else
+									drawblob(vid, (x*CELL+i), (y*CELL+j), 0x80, 0x80, 0x80);
+							}
+					}
+					else if (bmap[y][x]==WL_EHOLE)
+					{
+						if (emap[y][x])
+						{
+							for (j=0; j<CELL; j++)
+								for (i=0; i<CELL; i++)
+									drawblob(vid, (x*CELL+i), (y*CELL+j), 0x24, 0x24, 0x24);
+							for (j=0; j<CELL; j+=2)
+								for (i=0; i<CELL; i+=2)
+									vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x000000);
+						}
+						else
+						{
+							for (j=0; j<CELL; j+=2)
+								for (i=0; i<CELL; i+=2)
+									drawblob(vid, (x*CELL+i), (y*CELL+j), 0x24, 0x24, 0x24);
+						}
+					}
+				}
+
+				if (wtypes[wt].eglow && emap[y][x])
+				{
+					// glow if electrified
+					pc = wtypes[wt].eglow;
+					cr = fire_r[y][x] + PIXR(pc);
+					if (cr > 255) cr = 255;
+					fire_r[y][x] = cr;
+					cg = fire_g[y][x] + PIXG(pc);
+					if (cg > 255) cg = 255;
+					fire_g[y][x] = cg;
+					cb = fire_b[y][x] + PIXB(pc);
+					if (cb > 255) cb = 255;
+					fire_b[y][x] = cb;
+					
+				}
+			}
+}
+
 void draw_decorations(pixel *vid_buf,pixel *decorations)
 {
 	int i,r,g,b;
diff --git a/src/interface.c b/src/interface.c
index a60e2aa34..fd4e7ff68 100644
--- a/src/interface.c
+++ b/src/interface.c
@@ -1725,7 +1725,7 @@ void menu_ui_v3(pixel *vid_buf, int i, int *sl, int *sr, int *dae, int b, int bq
 					x = XRES-BARSIZE-18;
 					y += 19;
 				}*/
-				x -= draw_tool_xy(vid_buf, x, y, n, mwalls[n-UI_WALLSTART].colour)+5;
+				x -= draw_tool_xy(vid_buf, x, y, n, wtypes[n-UI_WALLSTART].colour)+5;
 				if (!bq && mx>=x+32 && mx<x+58 && my>=y && my< y+15)
 				{
 					drawrect(vid_buf, x+30, y-1, 29, 17, 255, 55, 55, 255);
@@ -1762,7 +1762,7 @@ void menu_ui_v3(pixel *vid_buf, int i, int *sl, int *sr, int *dae, int b, int bq
 					x = XRES-BARSIZE-18;
 					y += 19;
 				}*/
-				x -= draw_tool_xy(vid_buf, x, y, n, mwalls[n-UI_WALLSTART].colour)+5;
+				x -= draw_tool_xy(vid_buf, x, y, n, wtypes[n-UI_WALLSTART].colour)+5;
 				if (!bq && mx>=x+32 && mx<x+58 && my>=y && my< y+15)
 				{
 					drawrect(vid_buf, x+30, y-1, 29, 17, 255, 55, 55, 255);
@@ -1869,7 +1869,7 @@ void menu_ui_v3(pixel *vid_buf, int i, int *sl, int *sr, int *dae, int b, int bq
 	}
 	else if (i==SC_WALL||(i==SC_SPECIAL&&h>=UI_WALLSTART))
 	{
-		drawtext(vid_buf, XRES-textwidth((char *)mwalls[h-UI_WALLSTART].descs)-BARSIZE, sy-10, (char *)mwalls[h-UI_WALLSTART].descs, 255, 255, 255, 255);
+		drawtext(vid_buf, XRES-textwidth((char *)wtypes[h-UI_WALLSTART].descs)-BARSIZE, sy-10, (char *)wtypes[h-UI_WALLSTART].descs, 255, 255, 255, 255);
 	}
 	else
 	{
@@ -4598,4 +4598,4 @@ void simulation_ui(pixel * vid_buf)
 		if (!b)
 			break;
 	}
-}
\ No newline at end of file
+}
diff --git a/src/main.c b/src/main.c
index 3464d4636..ca968d2bd 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1310,6 +1310,7 @@ int main(int argc, char *argv[])
 		
 		for(i=0; i<30; i++){
 			memset(vid_buf, 0, (XRES+BARSIZE)*YRES*PIXELSIZE);
+			draw_walls(vid_buf);
 			update_particles(vid_buf);
 			draw_parts(vid_buf);
 			render_fire(vid_buf);
@@ -1616,8 +1617,10 @@ int main(int argc, char *argv[])
 
 		if (!sys_pause||framerender) //Only update if not paused
 			memset(gravmap, 0, sizeof(gravmap)); //Clear the old gravmap
+		
 		if(ngrav_enable)
 			draw_grav(vid_buf);
+		draw_walls(vid_buf);
 		update_particles(vid_buf); //update everything
 		draw_parts(vid_buf); //draw particles
 
diff --git a/src/powder.c b/src/powder.c
index f31e1159b..2264f09f8 100644
--- a/src/powder.c
+++ b/src/powder.c
@@ -2118,481 +2118,22 @@ void update_particles(pixel *vid)//doesn't update the particles themselves, but
 		}
 	}
 	pfree=l;
-	if (cmode==CM_BLOB)//draw walls in BLOB mode differently, this should be moved elsewhere
+	for (y=0; y<YRES/CELL; y++)
 	{
-		for (y=0; y<YRES/CELL; y++)
+		for (x=0; x<XRES/CELL; x++)
 		{
-			for (x=0; x<XRES/CELL; x++)
-			{
-				if (bmap[y][x]==WL_WALL)
-					for (j=0; j<CELL; j++)
-						for (i=0; i<CELL; i++)
-						{
-							pmap[y*CELL+j][x*CELL+i] = 0x7FFFFFFF;
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x808080);
-							drawblob(vid, (x*CELL+i), (y*CELL+j), 0x80, 0x80, 0x80);
-
-						}
-				if (bmap[y][x]==WL_DESTROYALL)
-					for (j=0; j<CELL; j+=2)
-						for (i=(j>>1)&1; i<CELL; i+=2)
-						{
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x808080);
-							drawblob(vid, (x*CELL+i), (y*CELL+j), 0x80, 0x80, 0x80);
-						}
-				if (bmap[y][x]==WL_ALLOWLIQUID)
-				{
-					for (j=0; j<CELL; j++)
-						for (i=0; i<CELL; i++)
-							if (!((y*CELL+j)%2) && !((x*CELL+i)%2))
-							{
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0xC0C0C0);
-								drawblob(vid, (x*CELL+i), (y*CELL+j), 0xC0, 0xC0, 0xC0);
-							}
-					if (emap[y][x])
-					{
-						cr = cg = cb = 16;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-					}
-				}
-				if (bmap[y][x]==WL_FAN)
-					for (j=0; j<CELL; j+=2)
-						for (i=(j>>1)&1; i<CELL; i+=2)
-						{
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x8080FF);
-							drawblob(vid, (x*CELL+i), (y*CELL+j), 0x80, 0x80, 0xFF);
-						}
-				if (bmap[y][x]==WL_DETECT)
-				{
-					for (j=0; j<CELL; j+=2)
-						for (i=(j>>1)&1; i<CELL; i+=2)
-						{
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0xFF8080);
-							drawblob(vid, (x*CELL+i), (y*CELL+j), 0xFF, 0x80, 0x80);
-						}
-					if (emap[y][x])
-					{
-						cr = 255;
-						cg = 32;
-						cb = 8;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-					}
-				}
-				if (bmap[y][x]==WL_EWALL)
-				{
-					if (emap[y][x])
-					{
-						cr = cg = cb = 128;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-						for (j=0; j<CELL; j++)
-							for (i=0; i<CELL; i++)
-								if (i&j&1)
-								{
-									vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x808080);
-									drawblob(vid, (x*CELL+i), (y*CELL+j), 0x80, 0x80, 0x80);
-								}
-					}
-					else
-					{
-						for (j=0; j<CELL; j++)
-							for (i=0; i<CELL; i++)
-								pmap[y*CELL+j][x*CELL+i] = 0x7FFFFFFF;
-						for (j=0; j<CELL; j++)
-							for (i=0; i<CELL; i++)
-								if (!(i&j&1))
-								{
-									vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x808080);
-									drawblob(vid, (x*CELL+i), (y*CELL+j), 0x80, 0x80, 0x80);
-								}
-					}
-				}
-				if (bmap[y][x]==WL_WALLELEC)
-				{
-					for (j=0; j<CELL; j++)
-						for (i=0; i<CELL; i++)
-						{
-							pmap[y*CELL+j][x*CELL+i] = 0x7FFFFFFF;
-							if (!((y*CELL+j)%2) && !((x*CELL+i)%2))
-							{
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0xC0C0C0);
-								drawblob(vid, (x*CELL+i), (y*CELL+j), 0xC0, 0xC0, 0xC0);
-							}
-							else
-							{
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x808080);
-								drawblob(vid, (x*CELL+i), (y*CELL+j), 0x80, 0x80, 0x80);
-							}
-						}
-					if (emap[y][x])
-					{
-						cr = cg = cb = 16;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-					}
-				}
-				if (bmap[y][x]==WL_ALLOWALLELEC)
-				{
-					for (j=0; j<CELL; j++)
-						for (i=0; i<CELL; i++)
-						{
-							//pmap[y*CELL+j][x*CELL+i] = 0x7FFFFFFF;
-							if (!((y*CELL+j)%2) && !((x*CELL+i)%2))
-							{
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0xFFFF22);
-								drawblob(vid, (x*CELL+i), (y*CELL+j), 0xFF, 0xFF, 0x22);
-							}
-
-						}
-					if (emap[y][x])
-					{
-						cr = cg = cb = 16;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-					}
-				}
-				if (bmap[y][x]==WL_ALLOWGAS)
-				{
-					for (j=0; j<CELL; j+=2)
-					{
-						for (i=(j>>1)&1; i<CELL; i+=2)
-						{
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x579777);
-							drawblob(vid, (x*CELL+i), (y*CELL+j), 0x57, 0x97, 0x77);
-						}
-					}
-				}
-				if (bmap[y][x]==WL_ALLOWAIR)
-				{
-					for (j=0; j<CELL; j+=2)
-					{
-						for (i=(j>>1)&1; i<CELL; i+=2)
-						{
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x3C3C3C);
-							drawblob(vid, (x*CELL+i), (y*CELL+j), 0x3C, 0x3C, 0x3C);
-						}
-					}
-				}
-				if (bmap[y][x]==WL_ALLOWSOLID)
-				{
-					for (j=0; j<CELL; j+=2)
-					{
-						for (i=(j>>1)&1; i<CELL; i+=2)
-						{
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x575757);
-							drawblob(vid, (x*CELL+i), (y*CELL+j), 0x57, 0x57, 0x57);
-						}
-					}
-				}
-				if (bmap[y][x]==WL_EHOLE)
-				{
-					if (emap[y][x])
-					{
-						for (j=0; j<CELL; j++)
-						{
-							for (i=(j)&1; i<CELL; i++)
-							{
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x242424);
-								drawblob(vid, (x*CELL+i), (y*CELL+j), 0x24, 0x24, 0x24);
-							}
-						}
-						for (j=0; j<CELL; j+=2)
-						{
-							for (i=(j)&1; i<CELL; i+=2)
-							{
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x000000);
-							}
-						}
-					}
-					else
-					{
-						for (j=0; j<CELL; j+=2)
-						{
-							for (i=(j)&1; i<CELL; i+=2)
-							{
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x242424);
-								drawblob(vid, (x*CELL+i), (y*CELL+j), 0x24, 0x24, 0x24);
-							}
-						}
-					}
-					if (emap[y][x])
-					{
-						cr = cg = cb = 16;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-					}
-				}
-				if (emap[y][x] && (!sys_pause||framerender))
-					emap[y][x] --;
-			}
-		}
-	}
-	else //draw walls in other modes, this should be elsewhere
-	{
-		for (y=0; y<YRES/CELL; y++)
-		{
-			for (x=0; x<XRES/CELL; x++)
-			{
-				if (bmap[y][x]==WL_WALL)
-					for (j=0; j<CELL; j++)
-						for (i=0; i<CELL; i++)
-						{
-							pmap[y*CELL+j][x*CELL+i] = 0x7FFFFFFF;
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x808080);
-						}
-				if (bmap[y][x]==WL_DESTROYALL)
-					for (j=0; j<CELL; j+=2)
-						for (i=(j>>1)&1; i<CELL; i+=2)
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x808080);
-				if (bmap[y][x]==WL_ALLOWLIQUID)
-				{
-					for (j=0; j<CELL; j++)
-						for (i=0; i<CELL; i++)
-							if (!((y*CELL+j)%2) && !((x*CELL+i)%2))
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0xC0C0C0);
-					if (emap[y][x])
-					{
-						cr = cg = cb = 16;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-					}
-				}
-				if (bmap[y][x]==WL_FAN)
-					for (j=0; j<CELL; j+=2)
-						for (i=(j>>1)&1; i<CELL; i+=2)
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x8080FF);
-				if (bmap[y][x]==WL_DETECT)
-				{
-					for (j=0; j<CELL; j+=2)
-						for (i=(j>>1)&1; i<CELL; i+=2)
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0xFF8080);
-					if (emap[y][x])
-					{
-						cr = 255;
-						cg = 32;
-						cb = 8;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-					}
-				}
-				if (bmap[y][x]==WL_EWALL)
-				{
-					if (emap[y][x])
-					{
-						cr = cg = cb = 128;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-						for (j=0; j<CELL; j++)
-							for (i=0; i<CELL; i++)
-								if (i&j&1)
-									vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x808080);
-					}
-					else
-					{
-						for (j=0; j<CELL; j++)
-							for (i=0; i<CELL; i++)
-								pmap[y*CELL+j][x*CELL+i] = 0x7FFFFFFF;
-						for (j=0; j<CELL; j++)
-							for (i=0; i<CELL; i++)
-								if (!(i&j&1))
-									vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x808080);
-					}
-				}
-				if (bmap[y][x]==WL_WALLELEC)
-				{
-					for (j=0; j<CELL; j++)
-						for (i=0; i<CELL; i++)
-						{
-							pmap[y*CELL+j][x*CELL+i] = 0x7FFFFFFF;
-							if (!((y*CELL+j)%2) && !((x*CELL+i)%2))
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0xC0C0C0);
-							else
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x808080);
-						}
-					if (emap[y][x])
-					{
-						cr = cg = cb = 16;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-					}
-				}
-				if (bmap[y][x]==WL_ALLOWALLELEC)
-				{
-					for (j=0; j<CELL; j++)
-						for (i=0; i<CELL; i++)
-						{
-							//pmap[y*CELL+j][x*CELL+i] = 0x7FFFFFFF;
-							if (!((y*CELL+j)%2) && !((x*CELL+i)%2))
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0xFFFF22);
-
-						}
-					if (emap[y][x])
-					{
-						cr = cg = cb = 16;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-					}
-				}
-				if (bmap[y][x]==WL_ALLOWAIR)
-				{
-					for (j=0; j<CELL; j+=2)
-					{
-						for (i=(j>>1)&1; i<CELL; i+=2)
-						{
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x3C3C3C);
-						}
-					}
-				}
-				if (bmap[y][x]==WL_ALLOWGAS)
-				{
-					for (j=0; j<CELL; j+=2)
-					{
-						for (i=(j>>1)&1; i<CELL; i+=2)
-						{
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x579777);
-						}
-					}
-				}
-				if (bmap[y][x]==WL_ALLOWSOLID)
-				{
-					for (j=0; j<CELL; j+=2)
-					{
-						for (i=(j>>1)&1; i<CELL; i+=2)
-						{
-							vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x575757);
-						}
-					}
-				}
-				if (bmap[y][x]==WL_EHOLE)
-				{
-					if (emap[y][x])
-					{
-						for (j=0; j<CELL; j++)
-						{
-							for (i=(j)&1; i<CELL; i++)
-							{
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x242424);
-							}
-						}
-						for (j=0; j<CELL; j+=2)
-						{
-							for (i=(j)&1; i<CELL; i+=2)
-							{
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x000000);
-							}
-						}
-					}
-					else
-					{
-						for (j=0; j<CELL; j+=2)
-						{
-							for (i=(j)&1; i<CELL; i+=2)
-							{
-								vid[(y*CELL+j)*(XRES+BARSIZE)+(x*CELL+i)] = PIXPACK(0x242424);
-							}
-						}
-					}
-					if (emap[y][x])
-					{
-						cr = cg = cb = 16;
-						cr += fire_r[y][x];
-						if (cr > 255) cr = 255;
-						fire_r[y][x] = cr;
-						cg += fire_g[y][x];
-						if (cg > 255) cg = 255;
-						fire_g[y][x] = cg;
-						cb += fire_b[y][x];
-						if (cb > 255) cb = 255;
-						fire_b[y][x] = cb;
-					}
-				}
-				if (emap[y][x] && (!sys_pause||framerender))
-					emap[y][x] --;
-			}
+			if (bmap[y][x]==WL_WALL || bmap[y][x]==WL_WALLELEC || (bmap[y][x]==WL_EWALL&&!emap[y][x]))
+				for (j=0; j<CELL; j++)
+					for (i=0; i<CELL; i++)
+						pmap[y*CELL+j][x*CELL+i] = 0x7FFFFFFF;
+			if (emap[y][x] && (!sys_pause||framerender))
+				emap[y][x] --;
 		}
 	}
 
 	update_particles_i(vid, 0, 1);
 
+	// this should probably be elsewhere
 	for (y=0; y<YRES/CELL; y++)
 		for (x=0; x<XRES/CELL; x++)
 			if (bmap[y][x]==WL_STREAM)