TNT: Fix multiple explosions erasing drops

Any second explosion near a first TNT explosion will punch all entities found nearby, including item drops. This causes the item pickup code to think the item was picked up, but by a `nil` player, thus removing the item. We query for the immortal entity group, and if the item is in the immortal group, do not punch the item.
minetest · Apr 30, 2016 · f14b411 · f14b411
1 parent 1a62989
commit f14b411
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/mods/tnt/init.lua b/mods/tnt/init.lua
@@ -160,10 +160,12 @@ local function entity_physics(pos, radius)
 			local obj_vel = obj:getvelocity()
 			obj:setvelocity(calc_velocity(pos, obj_pos,
 					obj_vel, radius * 10))
-			obj:punch(obj, 1.0, {
-				full_punch_interval = 1.0,
-				damage_groups = {fleshy = damage},
-			}, nil)
+			if not obj:get_armor_groups().immortal then
+				obj:punch(obj, 1.0, {
+					full_punch_interval = 1.0,
+					damage_groups = {fleshy = damage},
+				}, nil)
+			end
 		end
 	end
 end