Some minor changes

1 files changed, 120 insertions, 0 deletions

diff --git a/src/elements/legacy.cpp b/src/elements/legacy.cpp
new file mode 100644
index 0000000..dd58173
--- /dev/null
+++ b/src/elements/legacy.cpp
@@ -0,0 +1,120 @@
+#include "element.h"
+
+// Interactions which only occur when legacy_enable is on
+int update_legacy_all(UPDATE_FUNC_ARGS) {
+	int r, rx, ry, rt;
+	int t = parts[i].type;
+	if (!sim->legacy_enable) return 0;
+	if (t==PT_WTRV) {
+		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_WATR||(r&0xFF)==PT_DSTW||(r&0xFF)==PT_SLTW) && 1>(rand()%1000))
+					{
+						sim->part_change_type(i,x,y,PT_WATR);
+						sim->part_change_type(r>>8,x+rx,y+ry,PT_WATR);
+					}
+					if (((r&0xFF)==PT_ICEI || (r&0xFF)==PT_SNOW) && 1>(rand()%1000))
+					{
+						sim->part_change_type(i,x,y,PT_WATR);
+						if (1>(rand()%1000))
+							sim->part_change_type(r>>8,x+rx,y+ry,PT_WATR);
+					}
+				}
+	}
+	else if (t==PT_WATR) {
+		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_FIRE || (r&0xFF)==PT_LAVA) && 1>(rand()%10))
+					{
+						sim->part_change_type(i,x,y,PT_WTRV);
+					}
+				}
+	}
+	else if (t==PT_SLTW) {
+		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_FIRE || (r&0xFF)==PT_LAVA) && 1>(rand()%10))
+					{
+						sim->part_change_type(i,x,y,PT_SALT);
+						sim->part_change_type(r>>8,x+rx,y+ry,PT_WTRV);
+					}
+				}
+	}
+	else if (t==PT_DSTW) {
+		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_FIRE || (r&0xFF)==PT_LAVA) && 1>(rand()%10))
+					{
+						sim->part_change_type(i,x,y,PT_WTRV);
+					}
+				}
+	}
+	else if (t==PT_ICEI) {
+		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_WATR || (r&0xFF)==PT_DSTW) && 1>(rand()%1000))
+					{
+						sim->part_change_type(i,x,y,PT_ICEI);
+						sim->part_change_type(r>>8,x+rx,y+ry,PT_ICEI);
+					}
+				}
+	}
+	else if (t==PT_SNOW) {
+		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_WATR || (r&0xFF)==PT_DSTW) && 1>(rand()%1000))
+					{
+						sim->part_change_type(i,x,y,PT_ICEI);
+						sim->part_change_type(r>>8,x+rx,y+ry,PT_ICEI);
+					}
+					if (((r&0xFF)==PT_WATR || (r&0xFF)==PT_DSTW) && 15>(rand()%1000))
+						sim->part_change_type(i,x,y,PT_WATR);
+				}
+	}
+	if (t==PT_WTRV && sim->pv[y/CELL][x/CELL]>4.0f)
+		sim->part_change_type(i,x,y,PT_DSTW);
+	if (t==PT_OIL && sim->pv[y/CELL][x/CELL]<-6.0f)
+		sim->part_change_type(i,x,y,PT_GAS);
+	if (t==PT_GAS && sim->pv[y/CELL][x/CELL]>6.0f)
+		sim->part_change_type(i,x,y,PT_OIL);
+	if (t==PT_DESL && sim->pv[y/CELL][x/CELL]>12.0f)
+	{
+		sim->part_change_type(i,x,y,PT_FIRE);
+		parts[i].life = rand()%50+120;
+	}
+	return 0;
+}