minetest/builtin/game/statbars.lua
Wuzzy 6e1372bd89
Add support for statbar “off state” icons ()
This adds support for optional “off state” icons for statbars. “off state icons” can be used to denote the lack of something, like missing hearts or bubbles.

Add "off state" textures to the builtin statbars.

Co-authored-by: SmallJoker <mk939@ymail.com>
2020-05-11 21:40:45 +02:00

185 lines
4.7 KiB
Lua

-- 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)