-- Adds health bars above players. -- Code by 4aiman, textures by Calinou. Licensed under CC0. gauges = {} local hp_bar = { physical = false, collisionbox = {x = 0, y = 0, z = 0}, visual = "sprite", textures = {"20.png"}, -- The texture is changed later in the code. visual_size = {x = 1.5, y = 0.09375, z = 1.5}, -- Y value is (1 / 16) * 1.5. wielder = nil, } function vector.sqdist(a, b) local dx = a.x - b.x local dy = a.y - b.y local dz = a.z - b.z return dx*dx + dy*dy + dz*dz end function hp_bar:on_step(dtime) local wielder = self.wielder and minetest.get_player_by_name(self.wielder) if wielder == nil then 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 minetest.log("warning", "[gauges] Gauge removed as not attached! " .. dump(self.wielder)) self.object:remove() return end local hp = math.floor(20 * wielder:get_hp() / wielder:get_properties().hp_max) local breath = math.floor(11 * wielder:get_breath() / wielder:get_properties().breath_max) self.object:set_properties({ textures = { "health_" .. tostring(hp) .. ".png^breath_" .. tostring(breath) .. ".png", }, }) end minetest.register_entity("gauges:hp_bar", hp_bar) function gauges.add_HP_gauge(name) local player = minetest.get_player_by_name(name) if player then local pos = player:get_pos() local ent = minetest.add_entity(pos, "gauges:hp_bar") assert(ent) if ent ~= nil then ent:set_attach(player, "", {x = 0, y = 19, z = 0}, {x = 0, y = 0, z = 0}) ent = ent:get_luaentity() ent.wielder = player:get_player_name() end end end -- If health_bars not defined or set to true if minetest.settings:get_bool("health_bars") ~= false and minetest.settings:get_bool("enable_damage") then minetest.register_on_joinplayer(function(player) minetest.after(2, gauges.add_HP_gauge, player:get_player_name()) end) end function gauges.check_gauges() for _, player in pairs(minetest.get_connected_players()) do local pname = player:get_player_name() local found = false local objects = minetest.get_objects_inside_radius(player:get_pos(), 1) for _, object in pairs(objects) do local le = object:get_luaentity() if le and le.wielder == pname then found = true break end end if not found then minetest.log("warning", "[gauges] Gauge not found for player " .. pname) gauges.add_HP_gauge(pname) end end minetest.after(9.3, gauges.check_gauges) end minetest.after(2, gauges.check_gauges)