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

if hp_change <= 0 then
newhp = oldhp - hp_change
else
newhp = oldhp + hp_change
end

if newhp > maxhp[name] then
newhp = tonumber(maxhp)
end

minetest.log("action",name.." -> ("..hp_change..")")

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

hp_change = 0

end)