Prevent THDR from counting towards stacked particle limit

1 files changed, 4 insertions, 1 deletions

diff --git a/src/powder.c b/src/powder.c
index 2e55f49..de06b16 100644
--- a/src/powder.c
+++ b/src/powder.c
@@ -2864,7 +2864,10 @@ void update_particles(pixel *vid)//doesn't update the particles themselves, but
 					// 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]++;
+					// Count number of particles at each location, for excess stacking check
+					// (does not include energy particles or THDR - currently no limit on stacking those)
+					if (t!=PT_THDR)
+						pmap_count[y][x]++;
 				}
 			}
 			lastPartUsed = i;