local player_state_channels = {}

minetest.register_on_modchannel_message(function(channel_name, sender, message)
	local channel_decyphered = channel_name:gsub(sender,"")
	if sender ~= "" and channel_decyphered == ":player_movement_state" then
		local player = minetest.get_player_by_name(sender)
		local meta = player:get_meta()
		meta:set_string("player.player_movement_state", message)
	end
end)

local send_running_cancellation = function(player,sneaking)
	local name = player:get_player_name()
	player_state_channels[name]:send_all(minetest.serialize({stop_running=true,state=sneaking}))
end

minetest.register_on_joinplayer(function(player)
	local name = player:get_player_name()
	player_state_channels[name] = minetest.mod_channel_join(name..":player_movement_state")
	player:set_physics_override({jump=1.25,gravity=1.25})
	local meta = player:get_meta()
	meta:set_string("player.player_movement_state", "0")
	meta:set_string("player.old_player_movement_state", "0")
end)

minetest.register_on_dieplayer(function(player)
	local meta = player:get_meta()
	meta:set_string("player.player_movement_state", "0")
	send_running_cancellation(player,sneaking)
end)

minetest.register_globalstep(function(dtime)
	for _,player in ipairs(minetest.get_connected_players()) do
		local meta = player:get_meta()
		local hunger = meta:get_int("hunger")
		local state = meta:get_string("player.player_movement_state")
		local old_state = meta:get_string("player.old_player_movement_state")
		
		if state ~= old_state or ((state == "1" or state == "2") and hunger <= 6) then
			local running = (state == "1")
			local bunny_hopping = (state == "2")
			local sneaking = (state == "3")

			--running FOV modifier
			if hunger > 6 and (running or bunny_hopping) then
				player:set_fov(1.25, true,0.15)
				
				if bunny_hopping == true then
					--player:set_fov(1.45, true,0.15)
					player:set_physics_override({speed=1.75})
				else
					--player:set_fov(1.25, true,0.15)
					player:set_physics_override({speed=1.5})
				end
			elseif not (running or bunny_hopping) and (old_state == "1" or old_state == "2")  then
				player:set_fov(1, true,0.15)
				player:set_physics_override({speed=1})
				send_running_cancellation(player,sneaking) --preserve network data
			end

			--sneaking
			if sneaking then
				--player:set_fov(0.8, true,0.1)
				player:set_eye_offset({x=0,y=-1,z=0},{x=0,y=-1,z=0})
			else
				player:set_eye_offset({x=0,y=0,z=0},{x=0,y=0,z=0})
			end
		end

		meta:set_string("player.old_player_movement_state", state)
		
		--eating
		if player:get_player_control().RMB then
		
			local item = player:get_wielded_item():get_name()
			local satiation = minetest.get_item_group(item, "satiation")
			local hunger = minetest.get_item_group(item, "hunger")
			
			local meta = player:get_meta()
			if meta:get_int("hunger") == 20 then
				return 
			end
			
			if hunger > 0 and satiation > 0  then				
				local eating = meta:get_float("eating")
				local eating_timer = meta:get_float("eating_timer")
				
				eating = eating + dtime
				eating_timer = eating_timer + dtime
				
				local pos = player:get_pos()

				if sneaking then
					pos.y = pos.y + 1.425
				else
					pos.y = pos.y + 1.625
				end

				local dir = vector.multiply(player:get_look_dir(),0.3)
				local newpos = vector.add(pos,dir)

				local vel = player:get_player_velocity()

				local ps = minetest.add_particlespawner({
					amount = 6,
					time = 0.00001,
					minpos = {x=newpos.x-0.1, y=newpos.y-0.1, z=newpos.z-0.1},
					maxpos = {x=newpos.x+0.1, y=newpos.y-0.3, z=newpos.z+0.1},
					minvel = vector.new(vel.x-0.5,0.2,vel.z-0.5),
					maxvel = vector.new(vel.x+0.5,0.6,vel.z+0.5),
					minacc = {x=0, y=-9.81, z=1},
					maxacc = {x=0, y=-9.81, z=1},
					minexptime = 0.5,
					maxexptime = 1.5,
					minsize = 0,
					maxsize = 0,
					--attached = player,
					collisiondetection = true,
					collision_removal = true,
					vertical = false,
					node = {name= item.."node"},
					--texture = "eat_particles_1.png"
				})


				if eating_timer + dtime > 0.25 then
					minetest.sound_play("eat", {
						to_player = player:get_player_name(),
						gain = 1.0,  -- default
						pitch = math.random(60,100)/100,
					})
					eating_timer = 0
				end
				
				if eating + dtime >= 1 then
					local stack = player:get_wielded_item()
					stack:take_item(1)
					minetest.eat_food(player,item)
					eating = 0
					minetest.sound_play("eat_finish", {
						to_player = player:get_player_name(),
						gain = 0.2,  -- default
						pitch = math.random(60,85)/100,
					})
				end
				
				meta:set_float("eating_timer", eating_timer)
				meta:set_float("eating", eating)
			else
				local meta = player:get_meta()
				meta:set_float("eating", 0)
				meta:set_float("eating_timer", 0)
				
			end
		else
			local meta = player:get_meta()
			meta:set_float("eating", 0)
			meta:set_float("eating_timer", 0)
		end
		
	end
end)