1 files changed, 70 insertions, 0 deletions
diff --git a/elements/merc.cpp b/elements/merc.cpp
new file mode 100644
index 0000000..2df113b
--- /dev/null
+++ b/elements/merc.cpp
@@ -0,0 +1,70 @@
+#include "element.h"
+
+int update_MERC(UPDATE_FUNC_ARGS) {
+	int r, rx, ry, trade, np;
+	int maxtmp = ((10000/(parts[i].temp + 1))-1);
+	if ((10000%((int)parts[i].temp+1))>rand()%((int)parts[i].temp+1))
+		maxtmp ++;
+	if (parts[i].tmp < maxtmp)
+	{
+		for (rx=-1; rx<2; rx++)
+			for (ry=-1; ry<2; ry++)
+				if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
+				{
+					r = pmap[y+ry][x+rx];
+					if (!r || (parts[i].tmp >=maxtmp))
+						continue;
+					if ((r&0xFF)==PT_MERC&&33>=rand()/(RAND_MAX/100)+1)
+					{
+						if ((parts[i].tmp + parts[r>>8].tmp + 1) <= maxtmp)
+						{
+							parts[i].tmp += parts[r>>8].tmp + 1;
+							sim->kill_part(r>>8);
+						}
+					}
+				}
+	}
+	else
+		for (rx=-1; rx<2; rx++)
+			for (ry=-1; ry<2; ry++)
+				if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
+				{
+					r = pmap[y+ry][x+rx];
+					if (parts[i].tmp<=maxtmp)
+						continue;
+					if ((!r)&&parts[i].tmp>=1)//if nothing then create deut
+					{
+						np = sim->create_part(-1,x+rx,y+ry,PT_MERC);
+						if (np<0) continue;
+						parts[i].tmp--;
+						parts[np].temp = parts[i].temp;
+						parts[np].tmp = 0;
+					}
+				}
+	for ( trade = 0; trade<4; 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)
+				continue;
+			if ((r&0xFF)==PT_MERC&&(parts[i].tmp>parts[r>>8].tmp)&&parts[i].tmp>0)//diffusion
+			{
+				int temp = parts[i].tmp - parts[r>>8].tmp;
+				if (temp ==1)
+				{
+					parts[r>>8].tmp ++;
+					parts[i].tmp --;
+				}
+				else if (temp>0)
+				{
+					parts[r>>8].tmp += temp/2;
+					parts[i].tmp -= temp/2;
+				}
+			}
+		}
+	}
+	return 0;
+}