From 7a844f51ff7673aa49aee0f04517235c9a4da84a Mon Sep 17 00:00:00 2001
From: jacksonmj <mj-pt@jacksonmj.co.uk>
Date: Sat, 14 Apr 2012 19:12:08 +0100
Subject: [PATCH] Fix crash when flood fill deleting life

---
 src/powder.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/src/powder.c b/src/powder.c
index ceab90e16..6dc06554d 100644
--- a/src/powder.c
+++ b/src/powder.c
@@ -592,11 +592,20 @@ void kill_part(int i)//kills particle number i
 {
 	int x, y;
 
+	// Remove from pmap even if type==0, otherwise infinite recursion occurs when flood fill deleting
+	// a particle which sets type to 0 without calling kill_part (such as LIFE)
+	x = (int)(parts[i].x+0.5f);
+	y = (int)(parts[i].y+0.5f);
+	if (x>=0 && y>=0 && x<XRES && y<YRES) {
+		if ((pmap[y][x]>>8)==i)
+			pmap[y][x] = 0;
+		else if ((photons[y][x]>>8)==i)
+			photons[y][x] = 0;
+	}
+
 	if (parts[i].type == PT_NONE) //This shouldn't happen anymore, but it's here just in case
 		return;
 
-	x = (int)(parts[i].x+0.5f);
-	y = (int)(parts[i].y+0.5f);
 	if (parts[i].type == PT_STKM)
 	{
 		player.spwn = 0;
@@ -622,12 +631,6 @@ void kill_part(int i)//kills particle number i
 	{
 		detach(i);
 	}
-	if (x>=0 && y>=0 && x<XRES && y<YRES) {
-		if ((pmap[y][x]>>8)==i)
-			pmap[y][x] = 0;
-		else if ((photons[y][x]>>8)==i)
-			photons[y][x] = 0;
-	}
 
 	parts[i].type = PT_NONE;
 	parts[i].life = pfree;