From 7fc8d5f388039da885b3432cdfe7d5b7f4ace07c Mon Sep 17 00:00:00 2001
From: Simon Robertshaw <simon@hardwired.org.uk>
Date: Mon, 20 Aug 2012 13:41:03 +0100
Subject: [PATCH] Add missing legacy update function

---
 src/simulation/Simulation.cpp       |   4 +-
 src/simulation/elements/Element.cpp | 117 ++++++++++++++++++++++++++++
 src/simulation/elements/Element.h   |   1 +
 3 files changed, 120 insertions(+), 2 deletions(-)

diff --git a/src/simulation/Simulation.cpp b/src/simulation/Simulation.cpp
index ba248939a..d9da20630 100644
--- a/src/simulation/Simulation.cpp
+++ b/src/simulation/Simulation.cpp
@@ -3851,8 +3851,8 @@ void Simulation::update_particles_i(int start, int inc)
 				y = (int)(parts[i].y+0.5f);
 			}
 #endif
-			//if (legacy_enable)//if heat sim is off
-			//update_legacy_all(this, i,x,y,surround_space,nt, parts, pmap); //TODO:pop
+			if(legacy_enable)//if heat sim is off
+				Element::legacyUpdate(this, i,x,y,surround_space,nt, parts, pmap);
 
 killed:
 			if (parts[i].type == PT_NONE)//if its dead, skip to next particle
diff --git a/src/simulation/elements/Element.cpp b/src/simulation/elements/Element.cpp
index ff2918abf..4ec33a6d1 100644
--- a/src/simulation/elements/Element.cpp
+++ b/src/simulation/elements/Element.cpp
@@ -48,6 +48,123 @@ Element::Element():
 {
 }
 
+int Element::legacyUpdate(UPDATE_FUNC_ARGS) {
+	int r, rx, ry, rt;
+	int t = parts[i].type;
+	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))
+					{
+						if (rand()%4==0) sim->part_change_type(i,x,y,PT_SALT);
+						else sim->part_change_type(i,x,y,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;
+}
+
 int Element::defaultGraphics(GRAPHICS_FUNC_ARGS)
 {
 	int t = cpart->type;
diff --git a/src/simulation/elements/Element.h b/src/simulation/elements/Element.h
index 65e389890..72b6c2b01 100644
--- a/src/simulation/elements/Element.h
+++ b/src/simulation/elements/Element.h
@@ -53,6 +53,7 @@ public:
 	Element();
 	virtual ~Element() {}
 	static int defaultGraphics(GRAPHICS_FUNC_ARGS);
+	static int legacyUpdate(UPDATE_FUNC_ARGS);
 };
 
 #endif