advanced_npc/chat.lua

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-- NPC dialogue code by Zorman2000
npc.dialogue = {}
npc.dialogue.POSITIVE_GIFT_ANSWER_PREFIX = "Yes, give "
npc.dialogue.NEGATIVE_ANSWER_LABEL = "Nevermind"
-- This table contains the answers of dialogue boxes
npc.dialogue.dialogue_results = {
yes_no_dialogue = {}
}
-- Dialogue box definitions
-- The dialogue boxes are used for the player to interact with the
-- NPC in dialogues.
--------------------------------------------------------------------
-- Multi-option dialogue
local function create_formspec(options, close_option)
local options_length = table.getn(options) + 1
local formspec_height = (options_length * 0.7) + 1
local formspec = "size[7,"..tostring(formspec_height).."]"
for i, opt in ipairs(options) do
local y = 0.7;
if i > 1 then
y = (y * i)
end
formspec = formspec.."button[0.5,"..y..";6,0.5;opt"..tostring(i)..";"..options[i].opt.."]"
end
formspec = formspec.."button_exit[0.5,"..(formspec_height - 1)..";6,0.5;exit;"..close_option.."]"
return formspec
end
-- New function for getting dialogue formspec
function npc.dialogue.show_yes_no_dialogue(prompt,
positive_answer_label,
positive_callback,
negative_answer_label,
negative_callback,
player_name)
local formspec = "size[7,3]"..
"label[0.5,0.1;"..prompt.."]"..
"button_exit[0.5,1.15;6,0.5;yes_option;"..positive_answer_label.."]"..
"button_exit[0.5,1.95;6,0.5;no_option;"..negative_answer_label.."]"
-- Create entry into responses table
npc.dialogue.dialogue_results.yes_no_dialogue[1] = {
name = player_name,
response = "",
yes_callback = positive_callback,
no_callback = negative_callback
}
minetest.show_formspec(player_name, "advanced_npc:yes_no", formspec)
end
-- Dialogue methods
-- Returns all chatlines for a specific NPC
function npc.dialogue.select_random_dialogues_for_npc(sex, )
local result = {}
for i,chatline in ipairs(chat_options) do
if chatline.name == npc_name then
table.insert(result, chatline)
end
end
return result
end
-----------------------------------------------------------------------------
-- Functions for rotating NPC to look at player (taken from the API itself)
-----------------------------------------------------------------------------
local atan = function(x)
if x ~= x then
return 0
else
return math.atan(x)
end
end
local function rotate_npc_to_player(self)
local s = self.object:getpos()
local objs = minetest.get_objects_inside_radius(s, 4)
local lp = nil
local yaw = 0
for n = 1, #objs do
if objs[n]:is_player() then
lp = objs[n]:getpos()
break
end
end
if lp then
local vec = {
x = lp.x - s.x,
y = lp.y - s.y,
z = lp.z - s.z
}
yaw = (atan(vec.z / vec.x) + math.pi / 2) - self.rotate
if lp.x > s.x then
yaw = yaw + math.pi
end
end
self.object:setyaw(yaw)
end
---------------------------------------------------------------------
-- Drives conversation
---------------------------------------------------------------------
local function show_chat_option(npc_name, self, player_name, chat_options, close_option)
rotate_npc_to_player(self)
self.order = "stand"
local chatline = get_random_chatline(chat_options)
minetest.chat_send_player(player_name, chatline.text)
if chatline.options ~= nil then
minetest.log("Current options: "..dump(chatline.options))
local formspec = create_formspec(chatline.options, close_option)
minetest.show_formspec(player_name, "rndform", formspec)
end
self.order = "follow"
2016-11-26 20:30:24 +01:00
end
-- Function to get response by player name
local function get_yes_no_dialogue_response_by_player_name(player_name)
for i = 1,#npc.dialogue.dialogue_results.yes_no_dialogue do
local current_result = npc.dialogue.dialogue_results.yes_no_dialogue[i]
if current_result.name == player_name then
return current_result
end
end
return nil
end
-- Handler for chat formspec
minetest.register_on_player_receive_fields(function (player, formname, fields)
-- Additional checks for other forms should be handled here
if formname == "advanced_npc:yes_no" then
local player_name = player:get_player_name()
if fields then
local player_response = get_yes_no_dialogue_response_by_player_name(player_name)
if fields.yes_option then
player_response.response = true
player_response.yes_callback()
elseif fields.no_option then
player_response.response = false
player_response.no_callback()
end
minetest.log(player_name.." chose response: "
..dump(get_yes_no_dialogue_response_by_player_name(player_name).response))
end
end
end)