update entities.spawn(...) semantics to the docs state

res/content/base/scripts/components/drop.lua

@@ -7,7 +7,7 @@ ready = false
 target = -1
 
 ARGS = ARGS or {}
-local dropitem = ARGS.item or {}
+local dropitem = ARGS
 if SAVED_DATA.item then
     dropitem.id = item.index(SAVED_DATA.item)
     dropitem.count = SAVED_DATA.count

res/content/base/scripts/components/falling_block.lua

@@ -26,7 +26,7 @@ function on_grounded()
         block.set(ix, iy, iz, block.index(blockid))
     else
         local picking_item = block.get_picking_item(block.index(blockid))
-        local drop = entities.spawn("base:drop", pos, {item={id=picking_item, count=1}})
+        local drop = entities.spawn("base:drop", pos, {base__drop={id=picking_item, count=1}})
         drop.rigidbody:set_vel(vec3.spherical_rand(5.0))
     end
     entity:despawn()

res/content/base/scripts/hud.lua

@@ -17,7 +17,7 @@ function on_hud_open()
         local pvel = {player.get_vel(pid)}
         local ppos = vec3.add({player.get_pos(pid)}, {0, 0.7, 0})
         local throw_force = vec3.mul(player.get_dir(pid), DROP_FORCE)
-        local drop = entities.spawn("base:drop", ppos, {item={
+        local drop = entities.spawn("base:drop", ppos, {base__drop={
             id=itemid,
             count=1
         }})

res/content/base/scripts/sand.lua

@@ -1,6 +1,7 @@
 local function update(x, y, z)
     if block.is_replaceable_at(x, y-1, z) then
-        entities.spawn("base:falling_block", {x+0.5, y+0.5, z+0.5}, {block='base:sand'})
+        entities.spawn("base:falling_block", {x+0.5, y+0.5, z+0.5}, 
+            {base__falling_block={block='base:sand'}})
         block.set(x, y, z, 0)
     end
 end