Improve log messages (#422)

- Add log messages wherever required/useful
- Remove unnecessary log messages and print statements
- Convert print statements to minetest.log
- Fix incorrect log level for some messages
- Trivial code-style fixes

mods/pvp/dropondie/init.lua

@@ -6,7 +6,7 @@ local function drop(pos, itemstack)
 
 	for _, item in pairs(blacklist_drop) do
 		if sname == item then
-			minetest.log("info", "Not dropping " .. item)
+			minetest.log("info", "[dropondie] Not dropping " .. sname)
 			return
 		end
 	end
@@ -14,13 +14,12 @@ local function drop(pos, itemstack)
 	local obj = minetest.add_item(pos, it)
 
 	if obj then
-		obj:set_velocity({x=math.random(-1,1), y=5, z=math.random(-1,1)})
+		obj:set_velocity({ x = math.random(-1, 1), y = 5, z = math.random(-1, 1) })
 
 		local remi = minetest.settings:get("remove_items")
 		if minetest.is_yes(remi) then
 			obj:remove()
 		end
-
 	end
 	return itemstack
 end

mods/pvp/gauges/init.lua

@@ -22,13 +22,13 @@ end
 function hp_bar:on_step(dtime)
 	local wielder = self.wielder and minetest.get_player_by_name(self.wielder)
 	if wielder == nil then
-		print("[gauges] Gauge removed as null wielder! " .. dump(self.wielder))
+		minetest.log("warning", "[gauges] Gauge removed as null wielder! " .. dump(self.wielder))
 		self.object:remove()
 		return
 	end
 
 	if vector.sqdist(wielder:get_pos(), self.object:get_pos()) > 3 then
-		print("[gauges] Gauge removed as not attached! " .. dump(self.wielder))
+		minetest.log("warning", "[gauges] Gauge removed as not attached! " .. dump(self.wielder))
 		self.object:remove()
 		return
 	end
@@ -80,7 +80,7 @@ function gauges.check_gauges()
 		end
 
 		if not found then
-			print("Gauge not found!")
+			minetest.log("warning", "[gauges] Gauge not found for player " .. pname)
 			gauges.add_HP_gauge(pname)
 		end
 	end