310 lines
10 KiB
Lua
310 lines
10 KiB
Lua
quests = {}
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quests.registered_quests = {}
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quests.hud = {}
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local show_max = 10 -- the maximum visible quests.
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-- reading previous quests
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local file = io.open(minetest.get_worldpath().."/quests", "r")
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if file then
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print "Reading quests..."
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quests = minetest.deserialize(file:read("*all"))
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file:close()
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end
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quests.formspec_lists = {}
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-- call this function to enable the HUD for the player that shows his quests
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-- the HUD can only show up to show_max quests
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function quests.show_hud(playername)
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if (quests.hud[playername] ~= nil) then
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return
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end
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local hud = {
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hud_elem_type = "text",
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position = {x = 1, y = 0.3},
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offset = {x = -150, y = 0},
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scale = {x = 100, y = -50},
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number = 0xCACA00,
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text = "Open Quests:" }
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local player = minetest.get_player_by_name(playername)
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if (player == nil) then
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return
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end
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quests.hud[playername] = player:hud_add(hud)
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minetest.after(0, quests.update_hud, playername)
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end
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-- call this method to hide the hud
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function quests.hide_hud(playername)
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local player = minetest.get_player_by_name(playername)
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if (player == nil) then
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return
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end
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player:hud_remove(quests.hud[playername])
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quests.hud[playername] = nil
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end
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local function round(num, n)
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local mult = 10^(n or 0)
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return math.floor(num * mult + .5) / mult
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end
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-- only for internal use
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-- updates the hud
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function quests.update_hud(playername)
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if (quests.hud[playername] == nil) then
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return
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end
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local player = minetest.get_player_by_name(playername)
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if (player == nil) then
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return
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end
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local counter = 0
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local text = "Open Quests:\n\n"
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if (quests.registered_quests[playername] ~= nil) then
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for questname,questspecs in pairs(quests.registered_quests[playername]) do
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text = text .. questspecs["title"] .. "\n"
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if (questspecs["max"] ~= 1) then
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text = text .." (" .. round(questspecs["value"], 2) .. "/" .. questspecs["max"] .. ")\n"
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end
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counter = counter + 1
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if (counter >= show_max) then
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break
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end
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end
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end
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player:hud_change(quests.hud[playername], "text", text)
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end
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-- show the HUDs
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for playername,id in pairs(quests.hud) do
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if (id ~= nil) then
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quests.hud[playername] = nil
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minetest.after(10, function(playername)
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quests.show_hud(playername)
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quests.update_hud(playername)
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end, playername)
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end
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end
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-- registers a quest for the specified player
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--
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-- playername is the name of the player, who gets the quest
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-- questname is the name of the quest to identify it later
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-- it should follow the naming conventions: "modname:questname"
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-- quest is a table in the following format
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-- {
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-- title, -- is shown to the player and should contain usefull information about the quest.
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-- description, -- a small description of the mod.
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-- max, -- is the desired maximum. If max is 1, no maximum is displayed. defaults to 1
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-- autoaccept, -- is true or false, wether the result of the quest should be dealt by this mode or the registering mod.
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-- callback -- when autoaccept is true, at the end of the quest, it gets removed and callback is called.
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-- }
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--
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-- returns true, when the quest was successfully registered
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-- returns falls, when there was already such a quest
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function quests.register_quest(playername, questname, quest)
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if (quests.registered_quests[playername] == nil) then
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quests.registered_quests[playername] = {}
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end
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if (quests.registered_quests[playername][questname] ~=nil) then
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return false -- The quest was not registered since there already a quest with that name
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end
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quests.registered_quests[playername][questname] =
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{ value = 0,
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title = quest.title or "missing title",
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description = quest.description or "missing description",
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max = quest.max or 1,
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autoaccept = quest.autoaccept or false,
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callback = quest.callback, }
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quests.update_hud(playername)
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return true
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end
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-- when something happens that has effect on a quest, a mod should call this method
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-- playername is the name of the player
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-- questname is the quest which gets updated
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-- the quest gets updated by value
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-- this method calls a previously specified callback if autoaccept is true
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-- returns true if the quest is finished
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-- returns false if there is no such quest or the quest continues
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function quests.update_quest(playername, questname, value)
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if (quests.registered_quests[playername] == nil) then
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quests.registered_quests[playername] = {}
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end
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if (quests.registered_quests[playername][questname] == nil) then
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return false -- there is no such quest
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end
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if (value == nil) then
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return false -- no value given
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end
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quests.registered_quests[playername][questname]["value"] = quests.registered_quests[playername][questname]["value"] + value
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if (quests.registered_quests[playername][questname]["value"] >= quests.registered_quests[playername][questname]["max"]) then
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quests.registered_quests[playername][questname]["value"] = quests.registered_quests[playername][questname]["max"]
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if (quests.registered_quests[playername][questname]["autoaccept"]) then
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if (quests.registered_quests[playername][questname]["callback"] ~= nil) then
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quests.registered_quests[playername][questname]["callback"](playername, questname)
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end
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quests.registered_quests[playername][questname] = nil
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quests.update_hud(playername)
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end
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return true -- the quest is finished
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end
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quests.update_hud(playername)
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return false -- the quest continues
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end
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-- When the mod handels the end of quests himself, e.g. you have to talk to somebody to finish the quest,
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-- you have to call this method to end a quest
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-- returns true, when the quest is completed
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-- returns false, when the quest is still ongoing
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function quests.accept_quest(playername, questname)
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if (quests.registered_quests[playername][questname]) then
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quests.registered_quests[playername][questname] = nil
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quests.update_hud(playername)
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return true -- the quest is finished, the mod can give a reward
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end
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return false -- the quest hasn't finished
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end
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-- call this method, when you want to end a quest even when it was not finished
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-- example: the player failed
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function quests.abort_quest(playername, questname)
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if (questname == nil) then
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return
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end
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quests.registered_quests[playername][questname] = nil
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quests.update_hud(playername)
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end
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-- construct the questlog
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function quests.create_formspec(playername)
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local questlist = {}
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quests.formspec_lists[playername] = {}
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quests.formspec_lists[playername].id = 1
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quests.formspec_lists[playername].list = {}
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for questname,questspecs in pairs(quests.registered_quests[playername]) do
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local queststring = questspecs["title"]
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if (questspecs["max"] ~= 1) then
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local queststring = queststring .. " - (" .. round(questspecs["value"], 2) .. "/" .. questspecs["max"] .. ")"
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end
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table.insert(questlist, queststring)
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table.insert(quests.formspec_lists[playername].list, questname)
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end
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local formspec = "size[7,10]"..
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"textlist[0.25,0.25;6.5,7.5;questlist;"..table.concat(questlist, ",") .. ";1;false]" ..
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"button[0.25,8;3,.7;abort;Abort quest]" ..
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"button[3.75,8;3,.7;config;Configure]"..
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"button[.25,9;3,.7;info;Info]"..
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"button_exit[3.75,9;3,.7;exit;Exit]"
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return formspec
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end
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-- construct the configuration
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function quests.create_config(playername)
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local formspec = "size[7,3]" ..
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"checkbox[.25,.25;enable;Enable HUD;"
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if(quests.hud[playername] ~= nil) then
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formspec = formspec .. "true"
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else
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formspec = formspec .. "false"
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end
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formspec = formspec .. "]"..
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"button[.25,1.25;3,.7;return;Return]"
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return formspec
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end
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-- construct the info formspec
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function quests.create_info(playername, questname)
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local formspec = "size[7,6.5]" ..
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"label[0.5,0.5;" .. quests.registered_quests[playername][questname].title .. "]"..
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"textarea[.5,1.5;6,4.5;description;;" .. quests.registered_quests[playername][questname].description .. "]" ..
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"button[.5,6;3,.7;abort;Abort quest]"..
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"button[3.25,6;3,.7;return;Return]"
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return formspec
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end
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-- chatcommand to see a full list of quests:
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minetest.register_chatcommand("quests", {
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params = "",
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description = "Show all open quests",
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func = function(name, param)
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minetest.show_formspec(name, "quests:questlog", quests.create_formspec(name))
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return true
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end
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})
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-- Handle the return fields of the questlog
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minetest.register_on_player_receive_fields(function(player, formname, fields)
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if (player == nil) then
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return
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end
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local playername = player:get_player_name();
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if (playername == "") then
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return
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end
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if (formname == "quests:questlog") then
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if (fields["questlist"]) then
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local event = minetest.explode_textlist_event(fields["questlist"])
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if (event.type == "CHG") then
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quests.formspec_lists[playername].id = event.index
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end
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end
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if (fields["abort"]) then
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if (quests.formspec_lists[playername].id == nil) then
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return
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end
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quests.abort_quest(playername, quests.formspec_lists[playername]["list"][quests.formspec_lists[playername].id])
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minetest.show_formspec(playername, "quests:questlog", quests.create_formspec(playername))
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end
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if (fields["config"]) then
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minetest.show_formspec(playername, "quests:config", quests.create_config(playername))
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end
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if (fields["info"]) then
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minetest.show_formspec(playername, "quests:info", quests.create_info(playername, quests.formspec_lists[playername].list[quests.formspec_lists[playername].id]))
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end
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end
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if (formname == "quests:config") then
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if (fields["enable"]) then
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if (fields["enable"] == "true") then
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quests.show_hud(playername)
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else
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quests.hide_hud(playername)
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end
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end
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if (fields["return"]) then
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minetest.show_formspec(playername, "quests:questlog", quests.create_formspec(playername))
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end
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end
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if (formname == "quests:info") then
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if (fields["abort"]) then
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if (quests.formspec_lists[playername].id == nil) then
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return
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end
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quests.abort_quest(playername, quests.formspec_lists[playername]["list"][quests.formspec_lists[playername].id])
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minetest.show_formspec(playername, "quests:questlog", quests.create_formspec(playername))
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end
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if (fields["return"]) then
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minetest.show_formspec(playername, "quests:questlog", quests.create_formspec(playername))
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end
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end
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end)
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-- write the quests to file
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minetest.register_on_shutdown(function()
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print "Writing quests to file"
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local file = io.open(minetest.get_worldpath().."/quests", "w")
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if (file) then
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file:write(minetest.serialize({registered_quests = quests.registered_quests,
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hud = quests.hud}))
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file:close()
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end
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end)
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