minetest.register_on_player_hpchange(function(player, hp_change)

local name = player:get_player_name()
local oldhp = tonumber(player:get_attribute("hp:hp"))
local newhp = 0

newhp = oldhp + hp_change

if newhp > maxhp[name] then
newhp = maxhp[name]
end

if newhp <= 0 then
newhp = maxhp[name]
minetest.chat_send_player(name,"You died.")
player:set_pos({x=0,y=0,z=0})
--player:set_hp(0)
minetest.log("action",name.." died")
end

minetest.log("action",name.." -> "..newhp.."/"..maxhp[name].." ("..hp_change..")")
player:hud_change(hphuds[name], "text",newhp.." / "..maxhp[name])
player:set_attribute("hp:hp",newhp)

if hp_change ~= 20 then
return 0
else
return 20
end

end, true)