remove random pickaxe or stick and add digged node and throwing:arrow_dig

fix crash if not player in function throwing_shoot_arrow()
    "LuaEntity name "" not defined" and "functions.lua:34: attempt to index a nil value"
fix crash,  "self.*" not defined after self.object:remove()
    "dig_arrow.lua:67: attempt to index field 'player' (a nil value)"

mods/throwing/dig_arrow.lua

@@ -55,12 +55,7 @@ THROWING_ARROW_ENTITY.on_step = function(self, dtime)
 						damage_groups={fleshy=damage},
 					}, nil)
 					self.object:remove()
-					local toughness = 0.9
-					if math.random() < toughness then
-						minetest.add_item(self.lastpos, 'throwing:arrow_dig')
-					else
-						minetest.add_item(self.lastpos, 'default:stick')
-					end
+					minetest.add_item(self.lastpos, "throwing:arrow_dig")
 				end
 			end
 		end
@@ -68,18 +63,15 @@ THROWING_ARROW_ENTITY.on_step = function(self, dtime)
 
 	if self.lastpos.x~=nil then
 		if node.name ~= "air" then
-			self.object:remove()
+
 			if minetest.get_item_group(node.name, "unbreakable") == 0
 				and areas:canInteract(self.lastpos, self.player:get_player_name())
 				and node.diggable ~= false then
 				minetest.set_node(pos, {name = "air"})
 			end
-			local toughness = 0.65
-			if math.random() < toughness then
-				minetest.add_item(self.lastpos, 'default:pick_steel')
-			else
-				minetest.add_item(self.lastpos, 'default:stick')
-			end
+			minetest.add_item(self.lastpos, node.name)
+			minetest.add_item(self.lastpos, "throwing:arrow_dig")
+			self.object:remove()
 		end
 	end
 	self.lastpos={x=pos.x, y=pos.y, z=pos.z}

mods/throwing/functions.lua

@@ -17,11 +17,13 @@ minetest.register_on_leaveplayer(function(player)
 end)
 
 function throwing_shoot_arrow (itemstack, player, stiffness, is_cross)
+	if not player then return end
 	local arrow = itemstack:get_metadata()
 	itemstack:set_metadata("")
 	player:set_wielded_item(itemstack)
 	local playerpos = player:getpos()
 	local obj = minetest.add_entity({x=playerpos.x,y=playerpos.y+1.5,z=playerpos.z}, arrow)
+	if not obj then return end
 	local dir = player:get_look_dir()
 	obj:setvelocity({x=dir.x*stiffness, y=dir.y*stiffness, z=dir.z*stiffness})
 	obj:setacceleration({x=dir.x*-3, y=-10, z=dir.z*-3})
@@ -44,6 +46,7 @@ function throwing_unload (itemstack, player, unloaded, wear)
 				if not minetest.setting_getbool("creative_mode") then
 					player:get_inventory():add_item("main", arrow[1])
 				end
+				break
 			end
 		end
 	end