From 56b45c982b49a83a21e69a53b5ec00478b32675a Mon Sep 17 00:00:00 2001
From: jacksonmj <mj-pt@jacksonmj.co.uk>
Date: Wed, 4 Jan 2012 22:09:05 +0800
Subject: [PATCH] eval_move in create_part if a particle already exists in the
 requested position

To allow Lua tpt.create to create photons in glass
---
 src/powder.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/powder.c b/src/powder.c
index ca629cf5f..289c3a7fb 100644
--- a/src/powder.c
+++ b/src/powder.c
@@ -791,7 +791,7 @@ inline int create_part(int p, int x, int y, int tv)//the function for creating a
 		return -1;
 	if (p==-1)//creating from anything but brush
 	{
-		if (pmap[y][x] || (bmap[y/CELL][x/CELL] && !eval_move(t, x, y, NULL)))
+		if ((pmap[y][x] || bmap[y/CELL][x/CELL]) && !eval_move(t, x, y, NULL))
 		{
 			if ((pmap[y][x]&0xFF)!=PT_SPAWN&&(pmap[y][x]&0xFF)!=PT_SPAWN2)
 			{