More sprite cleanup, add 'house' sprite.

world.lua

@@ -99,33 +99,31 @@ function init_world()
       [tile_bush] = {
          replacement = tile_empty_bush,
          sfx = 13,
-         drop = 68
+         drop = 81
       },
 
       [tile_tree] = {
          replacement = tile_tree_stump,
          sfx = 11,
-         drop = 64
+         drop = 66
       },
 
       [tile_big_mushroom] = {
          replacement = tile_mushroom_stump,
          sfx = 12,
-         drop = 65
+         drop = 64
       },
 
-      -- cactus w/ flower
       [tile_flowering_cactus] = {
          replacement = tile_cactus_stump,
          sfx = 12,
-         drop = 67
+         drop = 80
       },
 
-      -- cactus
       [tile_cactus] = {
          replacement = tile_cactus_stump,
          sfx = 12,
-         drop = 66
+         drop = 65
       }
    }