From d0445258c5b4109de0b90e70ece559d938cd519a Mon Sep 17 00:00:00 2001
From: jacksonmj <mj-pt@jacksonmj.co.uk>
Date: Tue, 13 Oct 2015 00:59:41 +0100
Subject: [PATCH] CONV tmp value can now be used to restrict which elements get
 converted. Requires version bump to 92.

---
 src/client/GameSave.cpp          | 20 ++++++++++++++++++++
 src/gui/game/GameView.cpp        |  4 ++--
 src/simulation/Simulation.cpp    |  9 +++++++--
 src/simulation/elements/CONV.cpp | 16 ++++++++--------
 4 files changed, 37 insertions(+), 12 deletions(-)

diff --git a/src/client/GameSave.cpp b/src/client/GameSave.cpp
index 6391fe99e2..31df486b68 100644
--- a/src/client/GameSave.cpp
+++ b/src/client/GameSave.cpp
@@ -1085,6 +1085,15 @@ void GameSave::readOPS(char * data, int dataLength)
 								particles[newIndex].tmp2 = 0;
 							}
 						}
+					case PT_CONV:
+						if (savedVersion < 92)
+						{
+							if (particles[newIndex].tmp)
+							{
+								particles[newIndex].ctype |= particles[newIndex].tmp<<8;
+								particles[newIndex].tmp = 0;
+							}
+						}
 					}
 					//note: PSv was used in version 77.0 and every version before, add something in PSv too if the element is that old
 					newIndex++;
@@ -1738,6 +1747,17 @@ void GameSave::readPSv(char * data, int dataLength)
 				if (particles[i-1].type == PT_VINE)
 					particles[i-1].tmp = 1;
 			}
+			if (ver < 92)
+			{
+				if (particles[i-1].type == PT_CONV)
+				{
+					if (particles[i-1].tmp)
+					{
+						particles[i-1].ctype |= particles[i-1].tmp<<8;
+						particles[i-1].tmp = 0;
+					}
+				}
+			}
 		}
 	}
 
diff --git a/src/gui/game/GameView.cpp b/src/gui/game/GameView.cpp
index af4755f2b2..0bdb1767ea 100644
--- a/src/gui/game/GameView.cpp
+++ b/src/gui/game/GameView.cpp
@@ -2267,8 +2267,8 @@ void GameView::OnDraw()
 					sampleInfo << c->ElementResolve(sample.particle.type, sample.particle.ctype);
 					if (wavelengthGfx)
 						sampleInfo << " (" << ctype << ")";
-					// CRAY and DRAY store extra LIFE info in upper bits of ctype, instead of tmp2
-					else if (sample.particle.type == PT_CRAY || sample.particle.type == PT_DRAY)
+					// Some elements store extra LIFE info in upper bits of ctype, instead of tmp/tmp2
+					else if (sample.particle.type == PT_CRAY || sample.particle.type == PT_DRAY || sample.particle.type == PT_CONV)
 						sampleInfo << " (" << c->ElementResolve(ctype&0xFF, ctype>>8) << ")";
 					else if (c->IsValidElement(ctype))
 						sampleInfo << " (" << c->ElementResolve(ctype, -1) << ")";
diff --git a/src/simulation/Simulation.cpp b/src/simulation/Simulation.cpp
index 06499299df..bf4bc7b0f1 100644
--- a/src/simulation/Simulation.cpp
+++ b/src/simulation/Simulation.cpp
@@ -2847,8 +2847,13 @@ int Simulation::create_part(int p, int x, int y, int tv)
 				&& (!(elements[t].Properties & PROP_NOCTYPEDRAW)))
 			{
 				parts[pmap[y][x]>>8].ctype = t;
-				if (t == PT_LIFE && v >= 0 && v < NGOL && drawOn != PT_STOR)
-					parts[pmap[y][x]>>8].tmp = v;
+				if (t == PT_LIFE && v >= 0 && v < NGOL)
+				{
+					if (drawOn == PT_CONV)
+						parts[pmap[y][x]>>8].ctype |= v<<8;
+					else if (drawOn != PT_STOR)
+						parts[pmap[y][x]>>8].tmp = v;
+				}
 			}
 			else if ((drawOn == PT_DTEC || (drawOn == PT_PSTN && t != PT_FRME) || drawOn == PT_DRAY) && drawOn != t)
 			{
diff --git a/src/simulation/elements/CONV.cpp b/src/simulation/elements/CONV.cpp
index 24baa906f8..39fadcc3f7 100644
--- a/src/simulation/elements/CONV.cpp
+++ b/src/simulation/elements/CONV.cpp
@@ -50,7 +50,8 @@ Element_CONV::Element_CONV()
 int Element_CONV::update(UPDATE_FUNC_ARGS)
  {
 	int r, rx, ry;
-	if (parts[i].ctype<=0 || parts[i].ctype>=PT_NUM || !sim->elements[parts[i].ctype].Enabled || parts[i].ctype==PT_CONV || (parts[i].ctype==PT_LIFE && (parts[i].tmp<0 || parts[i].tmp>=NGOL)))
+	int ctype = parts[i].ctype&0xFF, ctypeExtra = parts[i].ctype>>8;
+	if (ctype<=0 || ctype>=PT_NUM || !sim->elements[ctype].Enabled || ctype==PT_CONV || (ctype==PT_LIFE && (ctypeExtra<0 || ctypeExtra>=NGOL)))
 	{
 		for (rx=-1; rx<2; rx++)
 			for (ry=-1; ry<2; ry++)
@@ -68,26 +69,25 @@ int Element_CONV::update(UPDATE_FUNC_ARGS)
 					{
 						parts[i].ctype = r&0xFF;
 						if ((r&0xFF)==PT_LIFE)
-							parts[i].tmp = parts[r>>8].ctype;
+							parts[i].ctype |= (parts[r>>8].ctype << 8);
 					}
 				}
 	}
 	else 
 	{
-		bool life = parts[i].ctype==PT_LIFE;
+		int restrictElement = sim->IsValidElement(parts[i].tmp) ? parts[i].tmp : 0;
 		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)
 				{
 					r = sim->photons[y+ry][x+rx];
-					if (!r)
+					if (!r || (restrictElement && (r&0xFF)!=restrictElement))
 						r = pmap[y+ry][x+rx];
-					if (!r)
+					if (!r || (restrictElement && (r&0xFF)!=restrictElement))
 						continue;
-					if((r&0xFF)!=PT_CONV && (r&0xFF)!=PT_DMND && (r&0xFF)!=parts[i].ctype)
+					if((r&0xFF)!=PT_CONV && (r&0xFF)!=PT_DMND && (r&0xFF)!=ctype)
 					{
-						if (life) sim->create_part(r>>8, x+rx, y+ry, parts[i].ctype|(parts[i].tmp<<8));
-						else sim->create_part(r>>8, x+rx, y+ry, parts[i].ctype);
+						sim->create_part(r>>8, x+rx, y+ry, parts[i].ctype);
 					}
 				}
 	}