Item Entity: Add message to moveresult assertion (#9797)

diff --git a/builtin/game/item_entity.lua b/builtin/game/item_entity.lua
index a85eba977b585608a0a30ce1c8a742b4435735ae..5d2cd7c76cce8762d59f5f722d711dc0eedafd8f 100644 (file)
--- a/builtin/game/item_entity.lua
+++ b/builtin/game/item_entity.lua
@@ -200,7 +200,9 @@ core.register_entity(":__builtin:item", {
                        return -- Don't do anything
                end
 
-               assert(moveresult)
+               assert(moveresult,
+                       "Collision info missing, this is caused by an out-of-date/buggy mod or game")
+
                if not moveresult.collides then
                        -- future TODO: items should probably decelerate in air
                        return