1 files changed, 76 insertions, 0 deletions
diff --git a/elements/acid.cpp b/elements/acid.cpp
new file mode 100644
index 0000000..3a72b9d
--- /dev/null
+++ b/elements/acid.cpp
@@ -0,0 +1,76 @@
+#include "element.h"
+
+int update_ACID(UPDATE_FUNC_ARGS) {
+	int r, rx, ry, trade, np;
+	for (rx=-2; rx<3; rx++)
+		for (ry=-2; ry<3; ry++)
+			if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
+			{
+				r = pmap[y+ry][x+rx];
+				if (!r)
+					continue;
+				if ((r&0xFF)!=PT_ACID && (r&0xFF)!=PT_CAUS)
+				{
+					if ((r&0xFF)==PT_PLEX || (r&0xFF)==PT_NITR || (r&0xFF)==PT_GUNP || (r&0xFF)==PT_RBDM || (r&0xFF)==PT_LRBD)
+					{
+						sim->part_change_type(i,x,y,PT_FIRE);
+						sim->part_change_type(r>>8,x+rx,y+ry,PT_FIRE);
+						parts[i].life = 4;
+						parts[r>>8].life = 4;
+					}
+					else if ((r&0xFF)==PT_WTRV)
+					{
+						if(!(rand()%250))
+						{
+							sim->part_change_type(i, x, y, PT_CAUS);
+							parts[i].life = (rand()%50)+25;
+							sim->kill_part(r>>8);
+						}
+					}
+					else if (((r&0xFF)!=PT_CLNE && (r&0xFF)!=PT_PCLN && sim->ptypes[r&0xFF].hardness>(rand()%1000))&&parts[i].life>=50)
+					{
+						if (sim->parts_avg(i, r>>8,PT_GLAS)!= PT_GLAS)//GLAS protects stuff from acid
+						{
+							float newtemp = ((60.0f-(float)sim->ptypes[r&0xFF].hardness))*7.0f;
+							if(newtemp < 0){
+								newtemp = 0;
+							}
+							parts[i].temp += newtemp;
+							parts[i].life--;
+							sim->kill_part(r>>8);
+						}
+					}
+					else if (parts[i].life<=50)
+					{
+						sim->kill_part(i);
+						return 1;
+					}
+				}
+			}
+	for ( trade = 0; trade<2; trade ++)
+	{
+		rx = rand()%5-2;
+		ry = rand()%5-2;
+		if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
+		{
+			r = pmap[y+ry][x+rx];
+			if ((r>>8)>=NPART || !r)
+				continue;
+			if ((r&0xFF)==PT_ACID&&(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 --;
+				}
+				else if (temp>0)
+				{
+					parts[r>>8].life += temp/2;
+					parts[i].life -= temp/2;
+				}
+			}
+		}
+	}
+	return 0;
+}