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-- cache setting
local enable_damage = core.settings:get_bool("enable_damage")
local health_bar_definition = {
hud_elem_type = "statbar",
position = {x = 0.5, y = 1},
text = "heart.png",
text2 = "heart_gone.png",
number = core.PLAYER_MAX_HP_DEFAULT,
item = core.PLAYER_MAX_HP_DEFAULT,
direction = 0,
size = {x = 24, y = 24},
offset = {x = (-10 * 24) - 25, y = -(48 + 24 + 16)},
}
local breath_bar_definition = {
hud_elem_type = "statbar",
position = {x = 0.5, y = 1},
text = "bubble.png",
text2 = "bubble_gone.png",
number = core.PLAYER_MAX_BREATH_DEFAULT,
item = core.PLAYER_MAX_BREATH_DEFAULT * 2,
direction = 0,
size = {x = 24, y = 24},
offset = {x = 25, y= -(48 + 24 + 16)},
}
local hud_ids = {}
local function scaleToDefault(player, field)
-- Scale "hp" or "breath" to the default dimensions
local current = player["get_" .. field](player)
local nominal = core["PLAYER_MAX_" .. field:upper() .. "_DEFAULT"]
local max_display = math.max(nominal,
math.max(player:get_properties()[field .. "_max"], current))
return current / max_display * nominal
end
local function update_builtin_statbars(player)
local name = player:get_player_name()
if name == "" then
return
end
local flags = player:hud_get_flags()
if not hud_ids[name] then
hud_ids[name] = {}
-- flags are not transmitted to client on connect, we need to make sure
-- our current flags are transmitted by sending them actively
player:hud_set_flags(flags)
end
local hud = hud_ids[name]
local immortal = player:get_armor_groups().immortal == 1
if flags.healthbar and enable_damage and not immortal then
local number = scaleToDefault(player, "hp")
if hud.id_healthbar == nil then
local hud_def = table.copy(health_bar_definition)
hud_def.number = number
hud.id_healthbar = player:hud_add(hud_def)
else
player:hud_change(hud.id_healthbar, "number", number)
end
elseif hud.id_healthbar then
player:hud_remove(hud.id_healthbar)
hud.id_healthbar = nil
end
local show_breathbar = flags.breathbar and enable_damage and not immortal
local breath = player:get_breath()
local breath_max = player:get_properties().breath_max
if show_breathbar and breath <= breath_max then
local number = 2 * scaleToDefault(player, "breath")
if not hud.id_breathbar and breath < breath_max then
local hud_def = table.copy(breath_bar_definition)
hud_def.number = number
hud.id_breathbar = player:hud_add(hud_def)
elseif hud.id_breathbar then
player:hud_change(hud.id_breathbar, "number", number)
end
end
if hud.id_breathbar and (not show_breathbar or breath == breath_max) then
minetest.after(1, function(player_name, breath_bar)
local player = minetest.get_player_by_name(player_name)
if player then
player:hud_remove(breath_bar)
end
end, name, hud.id_breathbar)
hud.id_breathbar = nil
end
end
local function cleanup_builtin_statbars(player)
local name = player:get_player_name()
if name == "" then
return
end
hud_ids[name] = nil
end
local function player_event_handler(player,eventname)
assert(player:is_player())
local name = player:get_player_name()
if name == "" or not hud_ids[name] then
return
end
if eventname == "health_changed" then
update_builtin_statbars(player)
if hud_ids[name].id_healthbar then
return true
end
end
if eventname == "breath_changed" then
update_builtin_statbars(player)
if hud_ids[name].id_breathbar then
return true
end
end
if eventname == "hud_changed" or eventname == "properties_changed" then
update_builtin_statbars(player)
return true
end
return false
end
function core.hud_replace_builtin(hud_name, definition)
if type(definition) ~= "table" or
definition.hud_elem_type ~= "statbar" then
return false
end
if hud_name == "health" then
health_bar_definition = definition
for name, ids in pairs(hud_ids) do
local player = core.get_player_by_name(name)
if player and ids.id_healthbar then
player:hud_remove(ids.id_healthbar)
ids.id_healthbar = nil
update_builtin_statbars(player)
end
end
return true
end
if hud_name == "breath" then
breath_bar_definition = definition
for name, ids in pairs(hud_ids) do
local player = core.get_player_by_name(name)
if player and ids.id_breathbar then
player:hud_remove(ids.id_breathbar)
ids.id_breathbar = nil
update_builtin_statbars(player)
end
end
return true
end
return false
end
-- Append "update_builtin_statbars" as late as possible
-- This ensures that the HUD is hidden when the flags are updated in this callback
core.register_on_mods_loaded(function()
core.register_on_joinplayer(update_builtin_statbars)
end)
core.register_on_leaveplayer(cleanup_builtin_statbars)
core.register_playerevent(player_event_handler)
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