More function pointers.

1 files changed, 97 insertions, 0 deletions

diff --git a/src/elements/spng.c b/src/elements/spng.c
new file mode 100644
index 0000000..4f0675d
--- /dev/null
+++ b/src/elements/spng.c
@@ -0,0 +1,97 @@
+#include <powder.h>
+
+int update_SPNG(UPDATE_FUNC_ARGS) {
+	int r, trade;
+	if (pv[y/CELL][x/CELL]<=3&&pv[y/CELL][x/CELL]>=-3)
+	{
+		for (nx=-1; nx<2; nx++)
+			for (ny=-1; ny<2; ny++)
+				if (x+nx>=0 && y+ny>0 && x+nx<XRES && y+ny<YRES && (nx || ny))
+				{
+					r = pmap[y+ny][x+nx];
+					if ((r>>8)>=NPART || !r || parts[i].temp>374.0f)
+						continue;
+					if (parts[r>>8].type==PT_WATR&&33>=rand()/(RAND_MAX/100)+1)
+					{
+						parts[i].life++;
+						parts[r>>8].type=PT_NONE;
+					}
+				}
+	}
+	else
+		for (nx=-1; nx<2; nx++)
+			for (ny=-1; ny<2; ny++)
+				if (x+nx>=0 && y+ny>0 && x+nx<XRES && y+ny<YRES && (nx || ny))
+				{
+					r = pmap[y+ny][x+nx];
+					if ((r>>8)>=NPART)
+						continue;
+					if ((bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_WALLELEC||bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_EWALL||bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_DESTROYALL||bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_WALL||
+					        bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_ALLOWAIR||bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_ALLOWSOLID||bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_ALLOWGAS))
+						continue;
+					if ((!r)&&parts[i].life>=1)//if nothing then create water
+					{
+						create_part(-1,x+nx,y+ny,PT_WATR);
+						parts[i].life--;
+					}
+				}
+	for ( trade = 0; trade<9; trade ++)
+	{
+		nx = rand()%5-2;
+		ny = rand()%5-2;
+		if (x+nx>=0 && y+ny>0 && x+nx<XRES && y+ny<YRES && (nx || ny))
+		{
+			r = pmap[y+ny][x+nx];
+			if ((r>>8)>=NPART || !r)
+				continue;
+			if (parts[r>>8].type==PT_SPNG&&(parts[i].life>parts[r>>8].life)&&parts[i].life>0)//diffusion
+			{
+				int temp = parts[i].life - parts[r>>8].life;
+				if (temp ==1)
+				{
+					parts[r>>8].life ++;
+					parts[i].life --;
+					trade = 9;
+				}
+				else if (temp>0)
+				{
+					parts[r>>8].life += temp/2;
+					parts[i].life -= temp/2;
+					trade = 9;
+				}
+			}
+		}
+	}
+	for (nx=-1; nx<2; nx++)
+		for (ny=-1; ny<2; ny++)
+			if (x+nx>=0 && y+ny>0 && x+nx<XRES && y+ny<YRES && (nx || ny))
+			{
+				r = pmap[y+ny][x+nx];
+				if ((r>>8)>=NPART || !r)
+					continue;
+				if (parts[r>>8].type==PT_FIRE&&parts[i].life>0)
+				{
+					if (parts[i].life<=2)
+						parts[i].life --;
+					parts[i].life -= parts[i].life/3;
+				}
+			}
+	if (parts[i].temp>=374)
+		for (nx=-1; nx<2; nx++)
+			for (ny=-1; ny<2; ny++)
+				if (x+nx>=0 && y+ny>0 && x+nx<XRES && y+ny<YRES && (nx || ny))
+				{
+					r = pmap[y+ny][x+nx];
+					if ((r>>8)>=NPART)
+						continue;
+					if ((bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_WALLELEC||bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_ALLOWLIQUID||bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_DESTROYALL||bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_WALL||bmap[(y+ny)/CELL][(x+nx)/CELL]==WL_ALLOWSOLID))
+						continue;
+					if ((!r)&&parts[i].life>=1)//if nothing then create steam
+					{
+						create_part(-1,x+nx,y+ny,PT_WTRV);
+						parts[i].life--;
+						parts[i].temp -= 40.0f;
+					}
+				}
+	return 0;
+}