add module 'base:util' & fix attack

res/content/base/modules/util.lua

@@ -0,0 +1,10 @@
+local base_entities = {}
+
+function base_entities.drop(ppos, itemid, count)
+    return entities.spawn("base:drop", ppos, {base__drop={
+        id=itemid,
+        count=count
+    }})
+end
+
+return base_entities

res/content/base/scripts/hud.lua

@@ -1,3 +1,5 @@
+local base_util = require "util"
+
 local DROP_FORCE = 8
 local DROP_INIT_VEL = {0, 3, 0}
 
@@ -17,10 +19,7 @@ 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, {base__drop={
-            id=itemid,
-            count=1
-        }})
+        local drop = base_util.drop(ppos, itemid, 1)
         local velocity = vec3.add(throw_force, vec3.add(pvel, DROP_INIT_VEL))
         drop.rigidbody:set_vel(velocity)
     end)