Exaggerate convection, misc rearrangement + fixes

includes/powder.h

@@ -222,9 +222,9 @@
 #define PROP_RADIOACTIVE	0x2000 //8192 Radioactive 
 #define FLAG_STAGNANT	1
 
-#define UPDATE_FUNC_ARGS int i, int x, int y, int a
+#define UPDATE_FUNC_ARGS int i, int x, int y, int surround_space
 // to call another update function with same arguments:
-#define UPDATE_FUNC_SUBCALL_ARGS i, x, y, a
+#define UPDATE_FUNC_SUBCALL_ARGS i, x, y, surround_space
 
 int update_ACID(UPDATE_FUNC_ARGS);
 int update_AMTR(UPDATE_FUNC_ARGS);
@@ -461,8 +461,8 @@ static const part_type ptypes[PT_NUM] =
 	{"LLIF",	PIXPACK(0x505050),	0.0f,	0.00f * CFDS,	0.90f,	0.00f,	0.0f,	0.0f,	0.00f,	0.000f	* CFDS,	0,	0,		0,	0,	0,	1,	100,	SC_LIFE,		9000.0f,				40,		"Long Life! B345/S5", TYPE_SOLID|PROP_LIFE, NULL},
 	{"STAN",	PIXPACK(0x5000FF),	0.0f,	0.00f * CFDS,	0.90f,	0.00f,	0.0f,	0.0f,	0.00f,	0.000f	* CFDS,	0,	0,		0,	0,	0,	1,	100,	SC_LIFE,		9000.0f,				40,		"Stains! B3678/S235678", TYPE_SOLID|PROP_LIFE, NULL},
 	{"SPNG",  	PIXPACK(0xFFBE30),	0.00f, 	0.00f * CFDS,   0.00f,  1.00f,   0.00f, 0.0f,   0.00f,  0.000f  * CFDS, 0, 	20, 	0,  1, 	30,	1, 	100,    SC_SOLIDS,  	R_TEMP+0.0f +273.15f,   251,    "A sponge, absorbs water.",TYPE_SOLID, &update_SPNG},
-	{"RIME",  	PIXPACK(0xCCCCCC),	0.00f, 	0.00f * CFDS,   0.00f,  1.00f,   0.00f, 0.0f,   0.00f,  0.000f  * CFDS, 0, 	0, 		0, 	0, 	30,	1,  100,    SC_CRACKER2,  	243.15f,				100,    "Not quite Ice",TYPE_SOLID, &update_FOG},
+	{"RIME",  	PIXPACK(0xCCCCCC),	0.00f, 	0.00f * CFDS,   0.00f,  1.00f,   0.00f, 0.0f,   0.00f,  0.000f  * CFDS, 0, 	0, 		0, 	0, 	30,	1,  100,    SC_CRACKER2,  	243.15f,				100,    "Not quite Ice",TYPE_SOLID, &update_RIME},
-	{"FOG",  	PIXPACK(0xAAAAAA),	0.8f,	0.00f * CFDS,	0.4f,	0.70f,	-0.1f,	0.0f,	0.99f,	0.000f	* CFDS, 0, 	0, 		0,  0,  30, 1,  1,		SC_CRACKER2,  	243.15f,				100,    "Not quite Steam",TYPE_GAS, &update_RIME},
+	{"FOG",  	PIXPACK(0xAAAAAA),	0.8f,	0.00f * CFDS,	0.4f,	0.70f,	-0.1f,	0.0f,	0.99f,	0.000f	* CFDS, 0, 	0, 		0,  0,  30, 1,  1,		SC_CRACKER2,  	243.15f,				100,    "Not quite Steam",TYPE_GAS, &update_FOG},
 	{"BCLN",	PIXPACK(0xFFD040),	0.0f,	0.00f * CFDS,	0.97f,	0.50f,	0.0f,	0.0f,	0.00f,	0.000f	* CFDS,	0,	0,		0,	0,	12,	1,	100,	SC_SPECIAL,		R_TEMP+0.0f	+273.15f,	251,	"Breakable Clone.", TYPE_SOLID, &update_BCLN},
 	{"LOVE",	PIXPACK(0xFF30FF),	0.0f,	0.00f * CFDS,	0.00f,	0.00f,	0.0f,	0.0f,	0.0f,	0.000f	* CFDS,	0,	0,		0,	0,	0,	1,	100,	SC_CRACKER2,	373.0f,					40,		"Love...", TYPE_SOLID, &update_MISC},
 	{"DEUT",  	PIXPACK(0x00153F),	0.6f,	0.01f * CFDS,	0.98f,	0.95f,	0.0f,	0.1f,	0.00f,	0.000f	* CFDS,	2,	0,		0,	0,	20,	1,	31,		SC_NUCLEAR,		R_TEMP-2.0f	+273.15f,	251,	"Deuterium oxide. Volume changes with temp, radioactive with neutrons.", TYPE_LIQUID|PROP_NEUTPENETRATE, &update_DEUT},

src/air.c

@@ -33,6 +33,52 @@ void update_air(void)
 {
 	int x, y, i, j;
 	float dp, dx, dy, f, tx, ty;
+	for (i=0; i<YRES/CELL; i++)
+	{
+		pv[i][0] = pv[i][0]*0.8f;
+		pv[i][1] = pv[i][1]*0.8f;
+		pv[i][2] = pv[i][2]*0.8f;
+		pv[i][XRES/CELL-2] = pv[i][XRES/CELL-2]*0.8f;
+		pv[i][XRES/CELL-1] = pv[i][XRES/CELL-1]*0.8f;
+		vx[i][0] = vx[i][1]*0.9f;
+		vx[i][1] = vx[i][2]*0.9f;
+		vx[i][XRES/CELL-2] = vx[i][XRES/CELL-3]*0.9f;
+		vx[i][XRES/CELL-1] = vx[i][XRES/CELL-2]*0.9f;
+		vy[i][0] = vy[i][1]*0.9f;
+		vy[i][1] = vy[i][2]*0.9f;
+		vy[i][XRES/CELL-2] = vy[i][XRES/CELL-3]*0.9f;
+		vy[i][XRES/CELL-1] = vy[i][XRES/CELL-2]*0.9f;
+	}
+	for (i=0; i<XRES/CELL; i++)
+	{
+		pv[0][i] = pv[0][i]*0.8f;
+		pv[1][i] = pv[1][i]*0.8f;
+		pv[2][i] = pv[2][i]*0.8f;
+		pv[YRES/CELL-2][i] = pv[YRES/CELL-2][i]*0.8f;
+		pv[YRES/CELL-1][i] = pv[YRES/CELL-1][i]*0.8f;
+		vx[0][i] = vx[1][i]*0.9f;
+		vx[1][i] = vx[2][i]*0.9f;
+		vx[YRES/CELL-2][i] = vx[YRES/CELL-3][i]*0.9f;
+		vx[YRES/CELL-1][i] = vx[YRES/CELL-2][i]*0.9f;
+		vy[0][i] = vy[1][i]*0.9f;
+		vy[1][i] = vy[2][i]*0.9f;
+		vy[YRES/CELL-2][i] = vy[YRES/CELL-3][i]*0.9f;
+		vy[YRES/CELL-1][i] = vy[YRES/CELL-2][i]*0.9f;
+	}
+
+	for (j=1; j<YRES/CELL; j++)
+	{
+		for (i=1; i<XRES/CELL; i++)
+		{
+			if (bmap[j][i]==WL_WALL || bmap[j][i]==WL_WALLELEC || (bmap[j][i]==WL_EWALL && !emap[j][i]))
+			{
+				vx[j][i] = 0.0f;
+				vx[j][i-1] = 0.0f;
+				vy[j][i] = 0.0f;
+				vy[j-1][i] = 0.0f;
+			}
+		}
+	}
 
 	for (y=1; y<YRES/CELL; y++)
 		for (x=1; x<XRES/CELL; x++)

src/elements/pyro.c

@@ -24,7 +24,7 @@ int update_PYRO(UPDATE_FUNC_ARGS) {
 				if (bmap[(y+ry)/CELL][(x+rx)/CELL] && bmap[(y+ry)/CELL][(x+rx)/CELL]!=WL_STREAM)
 					continue;
 				rt = parts[r>>8].type;
-				if ((a || ptypes[rt].explosive) && (t!=PT_SPRK || (rt!=PT_RBDM && rt!=PT_LRBD && rt!=PT_INSL && rt!=PT_SWCH)) &&
+				if ((surround_space || ptypes[rt].explosive) && (t!=PT_SPRK || (rt!=PT_RBDM && rt!=PT_LRBD && rt!=PT_INSL && rt!=PT_SWCH)) &&
 				        !(t==PT_PHOT && rt==PT_INSL) &&
 				        (t!=PT_LAVA || parts[i].life>0 || (rt!=PT_STNE && rt!=PT_PSCN && rt!=PT_NSCN && rt!=PT_NTCT && rt!=PT_PTCT && rt!=PT_METL  && rt!=PT_IRON && rt!=PT_ETRD && rt!=PT_BMTL && rt!=PT_BRMT && rt!=PT_SWCH && rt!=PT_INWR && rt!=PT_QRTZ))
 				        && !(rt==PT_SPNG && parts[r>>8].life>0) &&

src/main.c

@@ -1192,53 +1192,6 @@ int main(int argc, char *argv[])
 
 	while (!sdl_poll())
 	{
-		for (i=0; i<YRES/CELL; i++)
-		{
-			pv[i][0] = pv[i][0]*0.8f;
-			pv[i][1] = pv[i][1]*0.8f;
-			pv[i][2] = pv[i][2]*0.8f;
-			pv[i][XRES/CELL-2] = pv[i][XRES/CELL-2]*0.8f;
-			pv[i][XRES/CELL-1] = pv[i][XRES/CELL-1]*0.8f;
-			vx[i][0] = vx[i][1]*0.9f;
-			vx[i][1] = vx[i][2]*0.9f;
-			vx[i][XRES/CELL-2] = vx[i][XRES/CELL-3]*0.9f;
-			vx[i][XRES/CELL-1] = vx[i][XRES/CELL-2]*0.9f;
-			vy[i][0] = vy[i][1]*0.9f;
-			vy[i][1] = vy[i][2]*0.9f;
-			vy[i][XRES/CELL-2] = vy[i][XRES/CELL-3]*0.9f;
-			vy[i][XRES/CELL-1] = vy[i][XRES/CELL-2]*0.9f;
-		}
-		for (i=0; i<XRES/CELL; i++)
-		{
-			pv[0][i] = pv[0][i]*0.8f;
-			pv[1][i] = pv[1][i]*0.8f;
-			pv[2][i] = pv[2][i]*0.8f;
-			pv[YRES/CELL-2][i] = pv[YRES/CELL-2][i]*0.8f;
-			pv[YRES/CELL-1][i] = pv[YRES/CELL-1][i]*0.8f;
-			vx[0][i] = vx[1][i]*0.9f;
-			vx[1][i] = vx[2][i]*0.9f;
-			vx[YRES/CELL-2][i] = vx[YRES/CELL-3][i]*0.9f;
-			vx[YRES/CELL-1][i] = vx[YRES/CELL-2][i]*0.9f;
-			vy[0][i] = vy[1][i]*0.9f;
-			vy[1][i] = vy[2][i]*0.9f;
-			vy[YRES/CELL-2][i] = vy[YRES/CELL-3][i]*0.9f;
-			vy[YRES/CELL-1][i] = vy[YRES/CELL-2][i]*0.9f;
-		}
-
-		for (j=1; j<YRES/CELL; j++)
-		{
-			for (i=1; i<XRES/CELL; i++)
-			{
-				if (bmap[j][i]==WL_WALL || bmap[j][i]==WL_WALLELEC || (bmap[j][i]==WL_EWALL && !emap[j][i]))
-				{
-					vx[j][i] = 0.0f;
-					vx[j][i-1] = 0.0f;
-					vy[j][i] = 0.0f;
-					vy[j-1][i] = 0.0f;
-				}
-			}
-		}
-
 		if (!sys_pause||framerender)
 		{
 			update_air();

src/powder.c

@@ -1094,14 +1094,14 @@ int nearest_part(int ci, int t)
 
 void update_particles_i(pixel *vid, int start, int inc)
 {
-	int i, j, x, y, t, nx, ny, r, a, s, lt, rt, fe, nt, lpv, nearp, pavg, nnx, nny, q, golnum, goldelete, z, ctype, temp, trade, docontinue, nxx, nyy, nxi, nyi, ct, conduct_sprk;
+	int i, j, x, y, t, nx, ny, r, surround_space, s, lt, rt, nt, nnx, nny, q, golnum, goldelete, z;
-	float mv, dx, dy, ix, iy, lx, ly, d, pp, nrx, nry, dp, rr, rrr;
+	float mv, dx, dy, ix, iy, lx, ly, nrx, nry, dp;
 	float nn, ct1, ct2;
 	float pt = R_TEMP;
 	float c_heat = 0.0f;
 	int h_count = 0;
 	int starti = (start*-1);
-	int surround[24];
+	int surround[8];
 	int surround_hconduct[8];
 	float pGravX, pGravY, pGravD;
 
@@ -1341,7 +1341,8 @@ void update_particles_i(pixel *vid, int start, int inc)
 
 
 			if (x<CELL || y<CELL || x>=XRES-CELL || y>=YRES-CELL ||
-			        ((bmap[y/CELL][x/CELL]==WL_WALL ||
+			        (bmap[y/CELL][x/CELL] &&
+			         (bmap[y/CELL][x/CELL]==WL_WALL ||
 			          bmap[y/CELL][x/CELL]==WL_WALLELEC ||
 			          bmap[y/CELL][x/CELL]==WL_ALLOWAIR ||
 			          (bmap[y/CELL][x/CELL]==WL_DESTROYALL) ||
@@ -1387,19 +1388,6 @@ void update_particles_i(pixel *vid, int start, int inc)
 				}
 			}
 
-			if ((ptypes[t].explosive&2) && pv[y/CELL][x/CELL]>2.5f)
-			{
-				parts[i].life = rand()%80+180;
-				parts[i].temp = restrict_flt(ptypes[PT_FIRE].heat + (ptypes[t].flammable/2), MIN_TEMP, MAX_TEMP);
-				t = PT_FIRE;
-				part_change_type(i,x,y,t);
-				pv[y/CELL][x/CELL] += 0.25f * CFDS;
-			}
-
-			parts[i].vx *= ptypes[t].loss;
-			parts[i].vy *= ptypes[t].loss;
-
-
 			//Gravity mode by Moach
 			switch (gravityMode)
 			{
@@ -1420,6 +1408,9 @@ void update_particles_i(pixel *vid, int start, int inc)
 
 			}
 
+			parts[i].vx *= ptypes[t].loss;
+			parts[i].vy *= ptypes[t].loss;
+
 			parts[i].vx += ptypes[t].advection*vx[y/CELL][x/CELL] + pGravX;
 			parts[i].vy += ptypes[t].advection*vy[y/CELL][x/CELL] + pGravY;
 
@@ -1430,7 +1421,7 @@ void update_particles_i(pixel *vid, int start, int inc)
 				parts[i].vy += ptypes[t].diffusion*(rand()/(0.5f*RAND_MAX)-1.0f);
 			}
 
-			j = a = nt = 0;
+			j = surround_space = nt = 0;
 			for (nx=-1; nx<2; nx++)
 				for (ny=-1; ny<2; ny++) {
 					if (nx||ny) {
@@ -1439,7 +1430,7 @@ void update_particles_i(pixel *vid, int start, int inc)
 						if (!bmap[(y+ny)/CELL][(x+nx)/CELL] || bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_STREAM)
 						{
 							if (!(r&0xFF))
-								a = 1;
+								surround_space = 1;
 							if ((r&0xFF)!=t)
 								nt = 1;
 						}
@@ -1448,13 +1439,25 @@ void update_particles_i(pixel *vid, int start, int inc)
 
 			if (!legacy_enable)
 			{
+				if (y-2 >= 0 && y-2 < YRES && (ptypes[t].properties&TYPE_LIQUID)) {
+					float swappage;
+					r = pmap[y-2][x];
+					if (!((r>>8)>=NPART || !r || parts[i].type != (r&0xFF))) {
+						if (parts[i].temp>parts[r>>8].temp) {
+							swappage = parts[i].temp;
+							parts[i].temp = parts[r>>8].temp;
+							parts[r>>8].temp = swappage;
+						}
+					}
+				}
+
 				c_heat = 0.0f;
 				h_count = 0;
 				if (t&&(t!=PT_HSWC||parts[i].life==10)&&ptypes[t].hconduct>(rand()%250))
 				{
 					for (j=0; j<8; j++)
 					{
-						surround_hconduct[j] = -1;
+						surround_hconduct[j] = i;
 						r = surround[j];
 						if ((r>>8)>=NPART || !r)
 							continue;
@@ -1472,24 +1475,12 @@ void update_particles_i(pixel *vid, int start, int inc)
 					pt = parts[i].temp = (c_heat+parts[i].temp)/(h_count+1);
 					for (j=0; j<8; j++)
 					{
-						if (surround_hconduct[j]>=0)
 						parts[surround_hconduct[j]].temp = pt;
 					}
 
-					if (y-2 >= 0 && y-2 < YRES && ptypes[t].properties&TYPE_LIQUID) {
-						float swappage;
-						r = pmap[y-2][x];
-						if (!((r>>8)>=NPART || !r || parts[i].type != (r&0xFF))) {
-							if (parts[i].temp>parts[r>>8].temp) {
-								swappage = parts[i].temp;
-								parts[i].temp = parts[r>>8].temp;
-								parts[r>>8].temp = swappage;
-							}
-						}
-					}
-
 					s = 1;
 					if (pt>ptransitions[t].thv&&ptransitions[t].tht>-1) {
+						// particle type change due to high temperature
 						if (ptransitions[t].tht!=PT_NUM)
 							t = ptransitions[t].tht;
 						else if (t==PT_ICEI) {
@@ -1510,6 +1501,7 @@ void update_particles_i(pixel *vid, int start, int inc)
 						}
 						else s = 0;
 					} else if (pt<ptransitions[t].tlv&&ptransitions[t].tlt>-1) {
+						// particle type change due to low temperature
 						if (ptransitions[t].tlt!=PT_NUM)
 							t = ptransitions[t].tlt;
 						else if (t==PT_WTRV) {
@@ -1541,7 +1533,7 @@ void update_particles_i(pixel *vid, int start, int inc)
 						if (s) parts[i].life = 0;
 					}
 					else s = 0;
-					if (s) {
+					if (s) { // particle type change occurred
 						if (t==PT_ICEI||t==PT_LAVA)
 							parts[i].ctype = parts[i].type;
 						if (pstates[t].state==ST_GAS&&pstates[parts[i].type].state!=ST_GAS)
@@ -1617,8 +1609,20 @@ void update_particles_i(pixel *vid, int start, int inc)
 				}
 			}
 
+
+			if ((ptypes[t].explosive&2) && pv[y/CELL][x/CELL]>2.5f)
+			{
+				parts[i].life = rand()%80+180;
+				parts[i].temp = restrict_flt(ptypes[PT_FIRE].heat + (ptypes[t].flammable/2), MIN_TEMP, MAX_TEMP);
+				t = PT_FIRE;
+				part_change_type(i,x,y,t);
+				pv[y/CELL][x/CELL] += 0.25f * CFDS;
+			}
+
+
 			s = 1;
 			if (pv[y/CELL][x/CELL]>ptransitions[t].phv&&ptransitions[t].pht>-1) {
+				// particle type change due to high pressure
 				if (ptransitions[t].pht!=PT_NUM)
 					t = ptransitions[t].pht;
 				else if (t==PT_BMTL) {
@@ -1630,12 +1634,13 @@ void update_particles_i(pixel *vid, int start, int inc)
 				}
 				else s = 0;
 			} else if (pv[y/CELL][x/CELL]<ptransitions[t].plv&&ptransitions[t].plt>-1) {
+				// particle type change due to low pressure
 				if (ptransitions[t].plt!=PT_NUM)
 					t = ptransitions[t].plt;
 				else s = 0;
 			}
 			else s = 0;
-			if (s) {
+			if (s) { // particle type change occurred
 				parts[i].type = t;
 				if (t==PT_FIRE)
 					parts[i].life = rand()%50+120;
@@ -1647,11 +1652,11 @@ void update_particles_i(pixel *vid, int start, int inc)
 
 			if (ptypes[t].update_func)
 			{
-				if ((*(ptypes[t].update_func))(i,x,y,a))
+				if ((*(ptypes[t].update_func))(i,x,y,surround_space))
 					continue;
 			}
 			if (legacy_enable)
-				update_legacy_all(i,x,y,a);
+				update_legacy_all(i,x,y,surround_space);
 
 killed:
 			if (parts[i].type == PT_NONE)
@@ -1752,7 +1757,7 @@ killed:
 				}
 			}
 
-			// TODO: some particles use flags for unrelated purposes
+			// TODO: some particles (pipe, fwrk) use flags for unrelated purposes
 			rt = parts[i].flags & FLAG_STAGNANT;
 			parts[i].flags &= ~FLAG_STAGNANT;
 			if (!try_move(i, x, y, nx, ny))