From f0778c20332cc837a0d05996292a6e5e6265a9d7 Mon Sep 17 00:00:00 2001
From: Simon Robertshaw <simon@hardwired.org.uk>
Date: Wed, 13 Jun 2012 01:28:33 +0100
Subject: [PATCH] TPT: Prevent THDR from counting towards stacked particle
 limit

---
 src/simulation/Simulation.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/simulation/Simulation.cpp b/src/simulation/Simulation.cpp
index 6477fd4af..f92affb1a 100644
--- a/src/simulation/Simulation.cpp
+++ b/src/simulation/Simulation.cpp
@@ -4156,7 +4156,8 @@ void Simulation::update_particles()//doesn't update the particles themselves, bu
 					// To make particles collide correctly when inside these elements, these elements must not overwrite an existing pmap entry from particles inside them
 					if (!pmap[y][x] || (t!=PT_INVIS && t!= PT_FILT))
 						pmap[y][x] = t|(i<<8);
-					pmap_count[y][x]++;
+					if (t!=PT_THDR)
+						pmap_count[y][x]++;
 				}
 			}
 			lastPartUsed = i;