diff --git a/world.lua b/world.lua
index 66e4fa3..af828ea 100644
--- a/world.lua
+++ b/world.lua
@@ -3,13 +3,14 @@ function world_init()
   --test start
   bob = build(3,2,buildings.jam_workshop)
   bob = replace(bob, buildings.city)
-  destroy(bob)
+  --destroy(get_worldtile(3,2))
   --test end
 end
 
 function world_update()
     if (btnp(4)) build(3,2,buildings.jam_workshop)
     if (btnp(5)) compute_effect_array(worldtiles)
+    if (time()%1 == 0) compute_effect_array(worldtiles)
 end
 
 function world_draw()