diff --git a/.luacheckrc b/.luacheckrc
new file mode 100644
index 0000000..076aa9e
--- /dev/null
+++ b/.luacheckrc
@@ -0,0 +1,16 @@
+globals = {
+	'x_bows'
+}
+
+read_globals = {
+	'minetest',
+	'default',
+	'vector',
+	'table',
+	'ItemStack',
+	'armor',
+	'playerphysics',
+	'hb',
+	'mesecon',
+	'player_monoids'
+}
diff --git a/arrow.lua b/arrow.lua
index 0709520..a69d2b9 100644
--- a/arrow.lua
+++ b/arrow.lua
@@ -40,7 +40,17 @@ function x_bows.poison_effect(tick, time, time_left, arrow_obj, target_obj, old_
 	time_left = time_left + tick
 
 	if time_left <= time then
-		minetest.after(tick, x_bows.poison_effect, tick, time, time_left, arrow_obj, target_obj, old_damage_texture_modifier, punch_def)
+		minetest.after(
+			tick,
+			x_bows.poison_effect,
+			tick,
+			time,
+			time_left,
+			arrow_obj,
+			target_obj,
+			old_damage_texture_modifier,
+			punch_def
+		)
 	elseif target_obj:is_player() then
 		if x_bows.hbhunger then
 			-- Reset HUD bar color
@@ -135,7 +145,7 @@ minetest.register_entity('x_bows:arrow_entity', {
 		})
 	end,
 
-	on_death = function(self, killer)
+	on_death = function(self, killer) --luacheck:ignore
 		if not self._old_pos then
 			self.object:remove()
 			return
@@ -221,7 +231,14 @@ minetest.register_entity('x_bows:arrow_entity', {
 			if pointed_thing.type == 'object'
 				and pointed_thing.ref ~= self.object
 				and pointed_thing.ref:get_hp() > 0
-				and ((pointed_thing.ref:is_player() and pointed_thing.ref:get_player_name() ~= self.user:get_player_name()) or (pointed_thing.ref:get_luaentity() and pointed_thing.ref:get_luaentity().physical and pointed_thing.ref:get_luaentity().name ~= '__builtin:item'))
+				and (
+					(pointed_thing.ref:is_player() and pointed_thing.ref:get_player_name() ~= self.user:get_player_name())
+					or (
+						pointed_thing.ref:get_luaentity()
+						and pointed_thing.ref:get_luaentity().physical
+						and pointed_thing.ref:get_luaentity().name ~= '__builtin:item'
+					)
+				)
 				and self.object:get_attach() == nil
 			then
 				if pointed_thing.ref:is_player() then
@@ -402,12 +419,20 @@ minetest.register_entity('x_bows:arrow_entity', {
 						-- @TODO missing `active` posion arrow check for player (see lua_ent below)
 						if x_bows.hbhunger then
 							-- Set poison bar
-							hb.change_hudbar(pointed_thing.ref, 'health', nil, nil, 'hbhunger_icon_health_poison.png', nil, 'hbhunger_bar_health_poison.png')
+							hb.change_hudbar(
+								pointed_thing.ref,
+								'health',
+								nil,
+								nil,
+								'hbhunger_icon_health_poison.png',
+								nil,
+								'hbhunger_bar_health_poison.png'
+							)
 						end
 
 						x_bows.poison_effect(1, 5, 0, self, pointed_thing.ref, old_damage_texture_modifier, punch_def)
 					else
-						local lua_ent = pointed_thing.ref:get_luaentity()
+						-- local lua_ent = pointed_thing.ref:get_luaentity()
 						-- if not lua_ent[self.arrow .. '_active'] or lua_ent[self.arrow .. '_active'] == 'false' then
 							-- lua_ent[self.arrow .. '_active'] = true
 							x_bows.poison_effect(1, 5, 0, self, pointed_thing.ref, old_damage_texture_modifier, punch_def)
@@ -493,7 +518,7 @@ minetest.register_entity('x_bows:arrow_entity', {
 					-- remove last arrow when too many already attached
 					local children = {}
 
-					for k, object in ipairs(minetest.get_objects_inside_radius(pointed_thing.under, 1)) do
+					for _, object in ipairs(minetest.get_objects_inside_radius(pointed_thing.under, 1)) do
 						if not object:is_player() and object:get_luaentity() and object:get_luaentity().name == 'x_bows:arrow_entity' then
 							table.insert(children ,object)
 						end
diff --git a/bitbucket-pipelines.yml b/bitbucket-pipelines.yml
new file mode 100644
index 0000000..f194e6f
--- /dev/null
+++ b/bitbucket-pipelines.yml
@@ -0,0 +1,13 @@
+image: atlassian/default-image:3
+
+pipelines:
+  pull-requests:
+    "**":
+      - step:
+          name: Lint code
+          script:
+            - apt-get update
+            - apt-get -y install lua5.1
+            - apt-get -y install luarocks
+            - luarocks install luacheck
+            - luacheck .
diff --git a/init.lua b/init.lua
index c244a93..c014443 100644
--- a/init.lua
+++ b/init.lua
@@ -6,6 +6,8 @@ x_bows = {
 	creative = minetest.settings:get_bool('creative_mode') or false,
 	mesecons = minetest.get_modpath('mesecons'),
 	hbhunger = minetest.get_modpath('hbhunger'),
+	playerphysics = minetest.get_modpath('playerphysics'),
+	player_monoids = minetest.get_modpath('player_monoids'),
 	registered_arrows = {},
 	registered_bows = {},
 	player_bow_sneak = {},
@@ -32,7 +34,8 @@ function x_bows.register_bow(name, def)
 
 	-- not charged bow
 	minetest.register_tool(def.name, {
-		description = def.description .. '\n' .. minetest.colorize('#00FF00', 'Critical Arrow Chance: ' .. (1 / def.crit_chance) * 100 .. '%'),
+		description = def.description .. '\n' .. minetest.colorize('#00FF00', 'Critical Arrow Chance: '
+			.. (1 / def.crit_chance) * 100 .. '%'),
 		inventory_image = def.inventory_image or 'x_bows_bow_wood.png',
 		-- on_use = function(itemstack, user, pointed_thing)
 		-- end,
@@ -44,7 +47,8 @@ function x_bows.register_bow(name, def)
 
 	-- charged bow
 	minetest.register_tool(def.name_charged, {
-		description = def.description .. '\n' .. minetest.colorize('#00FF00', 'Critical Arrow Chance: ' .. (1 / def.crit_chance) * 100 .. '%'),
+		description = def.description .. '\n' .. minetest.colorize('#00FF00', 'Critical Arrow Chance: '
+			.. (1 / def.crit_chance) * 100 .. '%'),
 		inventory_image = def.inventory_image_charged or 'x_bows_bow_wood_charged.png',
 		on_use = x_bows.shoot,
 		groups = {bow = 1, flammable = 1, not_in_creative_inventory = 1},
@@ -70,7 +74,9 @@ function x_bows.register_arrow(name, def)
 	x_bows.registered_arrows[def.name] = def
 
 	minetest.register_craftitem('x_bows:' .. name, {
-		description = def.description .. '\n' .. minetest.colorize('#00FF00', 'Damage: ' .. def.tool_capabilities.damage_groups.fleshy) .. '\n' .. minetest.colorize('#00BFFF', 'Charge Time: ' .. def.tool_capabilities.full_punch_interval .. 's'),
+		description = def.description .. '\n' .. minetest.colorize('#00FF00', 'Damage: '
+			.. def.tool_capabilities.damage_groups.fleshy) .. '\n' .. minetest.colorize('#00BFFF', 'Charge Time: '
+			.. def.tool_capabilities.full_punch_interval .. 's'),
 		inventory_image = def.inventory_image,
 		groups = {arrow = 1, flammable = 1}
 	})
@@ -101,7 +107,7 @@ function x_bows.load(itemstack, user, pointed_thing)
 		end
 	end
 
-	for k, st in ipairs(inv_list) do
+	for _, st in ipairs(inv_list) do
 		if not st:is_empty() and x_bows.registered_arrows[st:get_name()] then
 			table.insert(itemstack_arrows, st)
 		end
@@ -154,7 +160,7 @@ function x_bows.load(itemstack, user, pointed_thing)
 	end
 end
 
-function x_bows.shoot(itemstack, user, pointed_thing)
+function x_bows.shoot(itemstack, user, pointed_thing) --luacheck:ignore
 	local time_shoot = minetest.get_us_time();
 	local meta = itemstack:get_meta()
 	local meta_arrow = meta:get_string('arrow')
@@ -196,13 +202,20 @@ function x_bows.shoot(itemstack, user, pointed_thing)
 
 	local pos = user:get_pos()
 	local dir = user:get_look_dir()
-	local obj = minetest.add_entity({x = pos.x, y = pos.y + 1.5, z = pos.z}, 'x_bows:arrow_entity', minetest.serialize(staticdata))
+	local obj = minetest.add_entity(
+		{
+			x = pos.x,
+			y = pos.y + 1.5,
+			z = pos.z
+		},
+		'x_bows:arrow_entity',
+		minetest.serialize(staticdata)
+	)
 
 	if not obj then
 		return itemstack
 	end
 
-	local lua_ent = obj:get_luaentity()
 	local strength_multiplier = tflp
 
 	if strength_multiplier > _tool_capabilities.full_punch_interval then
@@ -328,15 +341,19 @@ minetest.register_globalstep(function(dtime)
 			end
 
 			if item == 'x_bows:bow_wood_charged' and not x_bows.player_bow_sneak[name].sneak then
-				if minetest.get_modpath('playerphysics') then
+				if x_bows.playerphysics then
 					playerphysics.add_physics_factor(player, 'speed', 'x_bows:bow_wood_charged', 0.25)
+				elseif x_bows.player_monoids then
+					player_monoids.speed:add_change(player, 0.25, 'x_bows:bow_wood_charged')
 				end
 
 				x_bows.player_bow_sneak[name].sneak = true
 				player:set_fov(0.9, true, 0.4)
 			elseif item ~= 'x_bows:bow_wood_charged' and x_bows.player_bow_sneak[name].sneak then
-				if minetest.get_modpath('playerphysics') then
+				if x_bows.playerphysics then
 					playerphysics.remove_physics_factor(player, 'speed', 'x_bows:bow_wood_charged')
+				elseif x_bows.player_monoids then
+					player_monoids.speed:del_change(player, 'x_bows:bow_wood_charged')
 				end
 
 				x_bows.player_bow_sneak[name].sneak = false
diff --git a/mod.conf b/mod.conf
index f5c7e0d..58df3cf 100644
--- a/mod.conf
+++ b/mod.conf
@@ -1,5 +1,5 @@
 name = x_bows
 description = Adds bow and arrows to Minetest.
 depends =
-optional_depends = default, farming, 3d_armor, hbhunger, mesecons, playerphysics
+optional_depends = default, farming, 3d_armor, hbhunger, mesecons, playerphysics, player_monoids
 min_minetest_version = 5.0
\ No newline at end of file
diff --git a/nodes.lua b/nodes.lua
index 9c8200c..6dfe303 100644
--- a/nodes.lua
+++ b/nodes.lua
@@ -32,7 +32,7 @@ minetest.register_node('x_bows:target', {
 	groups = {snappy=3, flammable=4, fall_damage_add_percent=-30},
 	sounds = default.node_sound_leaves_defaults(),
 	mesecons = {receptor = {state = 'off'}},
-	on_timer = function (pos, elapsed)
+	on_timer = function (pos, elapsed) --luacheck:ignore
 		mesecon.receptor_off(pos)
 		return false
 	end,