quests/hud.lua

321 lines
10 KiB
Lua

--- Quests HUD.
-- @module hud
-- Boilerplate to support localized strings if intllib mod is installed.
local S
if minetest.get_modpath("intllib") then
S = intllib.Getter()
else
-- If you don't use insertions (@1, @2, etc) you can use this:
S = function(s) return s end
end
local show_max = 10 -- the maximum visible quests.
local hud_config = { position = {x = 1, y = 0.2},
offset = { x = -200, y = 0},
number = quests.colors.new }
--- Set the HUD position (not offset).
-- Supplied positions may be `nil` and will be skipped.
-- @note Calling this function while quests are already displayed will result
-- in undefined behaviour. Call it beforehand.
function quests.set_hud_position(x, y)
hud_config.position.x = x or hud_config.position.x
hud_config.position.y = y or hud_config.position.y
end
--- Set the HUD offset (not position).
-- Supplied positions may be `nil` and will be skipped.
-- @note Calling this function while quests are already displayed will result
-- in undefined behaviour. Call it beforehand.
function quests.set_hud_offset(x, y)
hud_config.offset.x = x or hud_config.offset.x
hud_config.offset.y = y or hud_config.offset.y
end
--- Show quests HUD to player.
-- The HUD can only show up to `show_max` quests
-- @param playername Player whose quests HUD must be shown
-- @param autohide Whether to automatically hide the HUD once it's empty
function quests.show_hud(playername, autohide)
if quests.hud[playername] == nil then
quests.hud[playername] = { autohide = autohide }
end
if quests.hud[playername].list ~= nil then
return
end
local player = minetest.get_player_by_name(playername)
if player == nil then
return false
end
quests.hud[playername].header = player:hud_add({
hud_elem_type = "text",
alignment = {x=1, y=1},
position = {x = hud_config.position.x, y = hud_config.position.y},
offset = {x = hud_config.offset.x, y = hud_config.offset.y - 20},
number = hud_config.number,
text = S("Quests:")
})
quests.hud[playername].list = {}
quests.update_hud(playername)
end
--- Hide quests HUD to player.
-- @param playername Player whose quests HUD must be hidden
function quests.hide_hud(playername)
local player = minetest.get_player_by_name(playername)
if player == nil or quests.hud[playername] == nil or quests.hud[playername].list == nil then
return
end
for _,quest in pairs(quests.hud[playername].list) do
if quest.text and quest.text.id then
player:hud_remove(quest.text.id)
end
if quest.background and quest.background.id then
player:hud_remove(quest.background.id)
end
if quest.bar and quest.bar.id then
player:hud_remove(quest.bar.id)
end
end
player:hud_remove(quests.hud[playername].header)
quests.hud[playername].list = nil
end
local function get_quest_hud_string(title, value, max)
return title .. "\n ("..quests.round(value, 2).."/"..max..")"
end
local function get_hud_list(playername)
local deftable = {}
local counter = 0
for questname, plr_quest in quests.sorted_pairs(quests.active_quests[playername]) do
local quest = quests.registered_quests[questname]
local hide_from_hud
if quests.info_quests[playername] and quests.info_quests[playername][questname] then
hide_from_hud = quests.info_quests[playername][questname].hide_from_hud
else
hide_from_hud = false
end
if quest and not hide_from_hud then -- Quest might have been deleted
local function get_table(name, value, max)
local def = {
text = {
hud_elem_type = "text",
alignment = { x=1, y= 1 },
position = {x = hud_config.position.x, y = hud_config.position.y},
offset = {x = hud_config.offset.x, y = hud_config.offset.y + counter * 40},
number = hud_config.number,
text = name
}
}
if plr_quest.finished then
if quests.failed_quests[playername] and quests.failed_quests[playername][questname] then
def.text.number = quests.colors.failed
else
def.text.number = quests.colors.success
end
else
def.text.number = hud_config.number
end
if value and max then
def.bar = {
hud_elem_type = "image",
scale = { x = math.floor(20 * value / max), y = 1 },
alignment = { x = 1, y = 1 },
position = { x = hud_config.position.x, y = hud_config.position.y },
offset = { x = hud_config.offset.x + 2, y = hud_config.offset.y + counter * 40 + 24 },
text = "quests_questbar.png"
}
def.background = {
hud_elem_type = "image",
scale = { x = 1, y = 1 },
size = { x = 2, y = 4 },
alignment = { x = 1, y = 1 },
position = { x = hud_config.position.x, y = hud_config.position.y },
offset = { x = hud_config.offset.x, y = hud_config.offset.y + counter * 40 + 22 },
text = "quests_questbar_background.png"
}
end
return def
end
if quest.simple then
deftable[questname] = get_table(get_quest_hud_string(quest.title, plr_quest.value, quest.max), plr_quest.value, quest.max)
counter = counter + 1
else
deftable[questname] = get_table(quest.title)
counter = counter + 0.5
for taskname, task in pairs(quest.tasks) do
local plr_task = quests.active_quests[playername][questname][taskname]
if plr_task.visible and not plr_task.disabled and not plr_task.finished then
deftable[questname .. "#" .. taskname] = get_table("- " .. get_quest_hud_string(task.title, plr_task.value, task.max), plr_task.value, task.max)
counter = counter + 1
if counter >= show_max + 1 then
break
end
end
end
end
if counter >= show_max + 1 then
break
end
end
end
return deftable
end
local DELETED = {}
-- only for internal use
-- updates the hud
function quests.update_hud(playername)
if quests.hud[playername] == nil or quests.active_quests[playername] == nil then
return
end
if quests.hud[playername].list == nil then
if quests.hud[playername].autohide and next(quests.active_quests[playername]) ~= nil then
quests.show_hud(playername)
end
return
end
local player = minetest.get_player_by_name(playername)
if player == nil then
return
end
if quests.hud[playername].autohide then
if next(quests.active_quests[playername]) == nil then
player:hud_change(quests.hud[playername].header, "text", S("No more Quests"))
minetest.after(3, function(playername)
if next(quests.active_quests[playername]) ~= nil then
player:hud_change(quests.hud[playername].header, "text", S("Quests:"))
quests.update_hud(playername)
else
quests.hide_hud(playername)
end
end, playername)
end
end
-- Check for changes in the hud
local function table_diff(tab1, tab2)
local result_tab
for k, v in pairs(tab2) do
if not tab1[k] or tab1[k] ~= v then
if type(tab1[k]) == "table" and type(v) == "table" then
local diff = table_diff(tab1[k], v)
if diff ~= nil then
if not result_tab then
result_tab = {}
end
result_tab[k] = diff
end
else
if not result_tab then
result_tab = {}
end
result_tab[k] = v
end
end
end
for k, _ in pairs(tab1) do
if tab2[k] == nil then
if not result_tab then
result_tab = {}
end
result_tab[k] = DELETED
end
end
return result_tab
end
-- Merge `from` into table `into`
local function table_merge(from, into)
for k, v in pairs(from) do
if type(v) == "table" and type(into[k]) == "table" then
table_merge(v, into[k])
else
into[k] = v
end
end
end
local old_hud = quests.hud[playername].list
local new_hud = get_hud_list(playername)
local diff = table_diff(old_hud, new_hud)
-- Copy the HUD IDs from the old table to the new one, to avoid loosing them
for questname, hud_elms in pairs(old_hud) do
for elm_name, elm_def in pairs(hud_elms) do
if new_hud[questname] and new_hud[questname][elm_name] then
new_hud[questname][elm_name].id = elm_def.id
end
end
end
--[[ Disabled because it had issues with MT engine and too much quests. HUD elements sometimes won't update.
if diff ~= nil then
for questname, hud_elms in pairs(diff) do
if hud_elms == DELETED then
for elm_name, elm_def in pairs(old_hud[questname]) do
player:hud_remove(elm_def.id)
end
else
for elm_name, elm_def in pairs(hud_elms) do
if not old_hud[questname] or not old_hud[questname][elm_name] or not old_hud[questname][elm_name].id then
new_hud[questname][elm_name].id = player:hud_add(elm_def)
else
for elm_prop_name, elm_prop in pairs(elm_def) do
if elm_prop_name ~= "id" then
if type(elm_prop) == "table" then
-- For table-based properties, MT expects a full table to be specified,
-- so we must create a merged table. Just merge the changes with the old
-- HUD table, since it will disappear.
table_merge(elm_prop, old_hud[questname][elm_name][elm_prop_name])
else
old_hud[questname][elm_name][elm_prop_name] = elm_prop
end
player:hud_change(new_hud[questname][elm_name].id, elm_prop_name, old_hud[questname][elm_name][elm_prop_name])
end
end
end
end
end
end
end]]
for questname, hud_elms in pairs(old_hud) do
for elm_name, elm_def in pairs(hud_elms) do
player:hud_remove(elm_def.id)
end
end
for questname, hud_elms in pairs(new_hud) do
for elm_name, elm_def in pairs(hud_elms) do
elm_def.id = player:hud_add(elm_def)
end
end
quests.hud[playername].list = new_hud
end
minetest.register_on_joinplayer(function(player)
local playername = player:get_player_name()
if quests.hud[playername] ~= nil then
if not quests.hud[playername].first then
return
end
local list = quests.hud[playername].list
local autohide = quests.hud[playername].autohide
local central_message_enabled = quests.hud[playername].central_message_enabled
quests.hud[playername] = {
autohide = autohide,
central_message_enabled = central_message_enabled
}
else -- new player
quests.hud[playername] = {
autohide = true,
central_message_enabled = true
}
quests.active_quests[playername] = {}
end
minetest.after(1, function(playername)
quests.show_hud(playername)
end, playername)
end)