Rework throwing code, add egg

mods/default/tools.lua

@@ -412,17 +412,4 @@ minetest.register_tool("default:shears", {
     }
 })
 
--- Snowball
-minetest.register_craftitem("default:snowball", {
-	description = "Snowball",
-	inventory_image = "default_snowball.png",
-	stack_max = 64,
-	on_use = snow_shoot_snowball,
-	groups = { weapon_ranged = 1 },
-	on_construct = function(pos)
-	pos.y = pos.y - 1
-		if minetest.get_node(pos).name == "default:dirt_with_grass" then
-			minetest.set_node(pos, {name="default:dirt_with_snow"})
-		end
-	end,
-})
+