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------------------------------------------------------------------------------
-- lm_tmsg.lua:
-- Messaging for timed Lua markers.
------------------------------------------------------------------------------
TimedMessaging = { CLASS = "TimedMessaging" }
TimedMessaging.__index = TimedMessaging
function TimedMessaging:new(m, nocheck)
m = m or { }
setmetatable(m, self)
self.__index = self
if not nocheck then
if not m.messages then
assert(m.noisemaker, "No noisemaker specified")
assert(m.verb, "No verb specified")
end
if m.visible and not m.messages then
error("No messages set for timer messager")
end
end
return m
end
function TimedMessaging:channel()
if not self.sound_channel then
self.sound_channel =
crawl.msgch_num(self.visible and 'default' or 'sound')
end
return self.sound_channel
end
function TimedMessaging:init(tmarker, cm, verbose)
self.entity = self.entity or tmarker.props.entity or tmarker.props.desc
if not self.ranges and not self.visible and not self.messages then
self.ranges = {
{ 5000, 'stately ' }, { 4000, '' },
{ 2500, 'brisk ' }, { 1500, 'urgent ' },
{ 0, 'frantic ' }
}
end
if not self.range_adjectives then
local function sqr(x)
return x * x
end
self.range_adjectives = {
{ sqr(30), '$F, a long way away' },
{ sqr(15), 'distant' },
{ sqr(7), '$F nearby' },
{ 0, '$F' }
}
end
self.check = self.check or tmarker.dur - 500
if self.check < 50 then
self.check = 50
end
if verbose and self.initmsg then
self:emit_message(cm, self.initmsg)
end
end
function TimedMessaging:perceptible(cm)
if not cm then
return true
end
if self.visible then
return you.see_cell(cm:pos())
else
return you.hear_pos(cm:pos())
end
end
function TimedMessaging:emit_message(cm, msg)
if not msg or not self:perceptible(cm) then
return
end
if type(msg) == 'table' then
util.foreach(msg,
function (m)
self:emit_message(cm, m)
end)
else
if #msg < 1 then
return
end
crawl.mpr(util.expand_entity(self.entity, msg), self:channel())
end
end
function TimedMessaging:proc_ranges(ranges, dur, fn)
if not ranges then
return
end
for _, chk in ipairs(ranges) do
if dur > chk[1] then
fn(chk, dur)
break
end
end
end
function TimedMessaging:player_distance2(cm)
local cx, cy = cm:pos()
local x, y = you.pos()
local dx, dy = cx - x, cy - y
return dx * dx + dy * dy
end
function TimedMessaging:choose_range_adjective(distance)
for _, dadj in ipairs(self.range_adjectives) do
if distance >= dadj[1] then
return dadj[2]
end
end
end
function TimedMessaging:range_adjective(cm, thing)
local adj = self:choose_range_adjective(self:player_distance2(cm))
if string.find(adj, '$F') then
return util.expand_entity(self.noisemaker, adj)
else
return crawl.article_a(#adj == 0 and self.noisemaker
or adj .. ' ' .. self.noisemaker)
end
end
function TimedMessaging:say_message(cm, dur)
if dur <= 0 then
self:emit_message(nil, self.finalmsg)
return
end
local noisemaker =
self.noisemaker and self:range_adjective(cm, self.noisemaker)
self:proc_ranges(self.ranges, dur,
function (chk)
self:emit_message(nil,
"You hear the " .. chk[2] .. self.verb
.. " of " .. noisemaker .. ".")
end)
self:proc_ranges(self.messages, dur,
function (chk)
self:emit_message(nil, chk[2])
end)
end
function TimedMessaging:event(luamark, cmarker, event)
if luamark.dur < self.check or luamark.dur <= 0 then
self.check = luamark.dur - 250
if luamark.dur > 900 then
self.check = self.check - 250
end
if self:perceptible(cmarker) then
self:say_message(cmarker, luamark.dur)
end
end
end
function TimedMessaging:write(th)
lmark.marshall_table(th, self)
end
function TimedMessaging.read(th)
return TimedMessaging:new(lmark.unmarshall_table(th))
end
function timed_msg(pars)
return TimedMessaging:new(pars)
end
-- Accepts pairs of turns and messages used for a timer. For instance
-- timer_interval_messages(500, 'You feel vaguely uneasy.',
-- 250, 'You feel extremely uneasy.',
-- 100, 'You feel a primal terror.')
-- Will produce the first message when the timer has > 500 turns, the
-- second message when the timer has <= 500 turns and >250 turns, and so on.
-- Note that any given interval message will be repeated, usually every 50
-- or 25 turns.
function timer_interval_messages(...)
local breakpoints = util.partition({ ... }, 2)
-- Expand turn breakpoints into tenths of a turn.
util.foreach(breakpoints,
function (brk)
brk[1] = brk[1] * 10
end)
return breakpoints
end
-- Accepts timer messages as with timer_interval_messages, but with no
-- explicit intervals. Instead, the total turn count is divided by the
-- number of messages to determine intervals.
function time_messages(total_turns, ...)
local messages = { ... }
local n = #messages
-- Each interval is 1.2 * the previous (lower) interval.
local inflate = 1.2
local function power_sum(n)
local sum = 1
for i = 1, n - 1 do
sum = sum + inflate ^ i
end
return sum
end
local base_interval = total_turns / power_sum(n)
local res = { }
for i = 1, n - 1 do
local pow = n - i
total_turns = total_turns - base_interval * inflate ^ pow
table.insert(res, { math.floor(10 * total_turns), messages[i] } )
end
table.insert(res, { 0, messages[n] })
return res
end
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