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-rw-r--r--advtrains_line_automation/railwaytime.lua181
1 files changed, 140 insertions, 41 deletions
diff --git a/advtrains_line_automation/railwaytime.lua b/advtrains_line_automation/railwaytime.lua
index 1c6e31f..0e222d2 100644
--- a/advtrains_line_automation/railwaytime.lua
+++ b/advtrains_line_automation/railwaytime.lua
@@ -13,6 +13,8 @@
-- 43;3 22;0 2;30 0;10 ;10
-- Those places are then filled with zeroes. Indeed, ";" would be valid for 00;00 .
+-- Using negative times is discouraged. If you need a negative time, you may insert a minus (-) ONLY in the "c" place
+
--[[
1;23;45 = {
s=45,
@@ -20,6 +22,14 @@
c=1, -- Cycle(~hour), not displayed most time
}
+Railway times can exist in 3 forms:
+- as table (see above)
+- as string (like "12;34")
+- as number (of seconds)
+
+Forms are automagically converted as needed by the converter functions to_*
+To be sure a rwt is in the required form, explicitly use a converter.
+
]]
local rwt = {}
@@ -43,7 +53,7 @@ function rwt.step(dt)
end
function rwt.now()
- return rwt.from_sec(e_time)
+ return rwt.to_table(e_time)
end
function rwt.new(c, m, s)
@@ -54,55 +64,112 @@ function rwt.new(c, m, s)
}
end
function rwt.copy(rwtime)
+ local rwtimet = rwt.to_table(rwtime)
return {
- c = rwtime.c or 0,
- m = rwtime.m or 0,
- s = rwtime.s or 0
+ c = rwtimet.c or 0,
+ m = rwtimet.m or 0,
+ s = rwtimet.s or 0
}
end
-function rwt.from_sec(stime)
- local res = {}
- local seconds = atfloor(stime)
- res.s = seconds % 60
- local minutes = atfloor(seconds/60)
- res.m = minutes % 60
- res.c = atfloor(minutes/60)
- return res
+function rwt.to_table(rwtime)
+ if type(rwtime) == "table" then
+ return rwtime
+ elseif type(rwtime) == "string" then
+ return rwt.parse(rwtime)
+ elseif type(rwtime) == "number" then
+ local res = {}
+ local seconds = atfloor(rwtime)
+ res.s = seconds % 60
+ local minutes = atfloor(seconds/60)
+ res.m = minutes % 60
+ res.c = atfloor(minutes/60)
+ return res
+ end
end
-function rwt.to_sec(rwtime, c_over)
- return (c_over or rwtime.c)*60*60 + rwtime.m*60 + rwtime.s
+function rwt.to_secs(rwtime, c_over)
+ local res = rwtime
+ if type(rwtime) == "string" then
+ res = rwt.parse(rwtime)
+ elseif type(rwtime) == "number" then
+ return rwtime
+ end
+ if type(res)=="table" then
+ return (c_over or res.c)*60*60 + res.m*60 + res.s
+ end
end
-function rwt.add(t1, t2)
- local t1s = rwt.to_sec(t1)
- local t2s = rwt.to_sec(t1)
- return rwt.from_sec(t1s + t2s)
+function rwt.to_string(rwtime_p, no_cycle)
+ local rwtime = rwt.to_table(rwtime_p)
+ if rwtime.c~=0 and not no_cycle then
+ return string.format("%d;%02d;%02d", rwtime.c, rwtime.m, rwtime.s)
+ else
+ return string.format("%02d;%02d", rwtime.m, rwtime.s)
+ end
end
-function rwt.add_secs(t1, t2s)
- local t1s = rwt.to_sec(t1)
- return rwt.from_sec(t1s + t2s)
+---
+
+local function v_n(str, cpl)
+ if not str then return nil end
+ if str == "" then
+ return 0
+ end
+ local n = tonumber(str)
+ if not cpl and (n<0 or n>59) then
+ return nil
+ end
+ return n
+end
+
+function rwt.parse(str)
+ --atdebug("parse",str)
+ --3-value form
+ local str_c, str_m, str_s = string.match(str, "^(%-?%d?%d?);(%d%d);(%d?%d?)$")
+ if str_c and str_m and str_s then
+ --atdebug("3v",str_c, str_m, str_s)
+ local c, m, s = v_n(str_c, true), v_n(str_m), v_n(str_s)
+ if c and m and s then
+ return rwt.new(c,m,s)
+ end
+ end
+ --2-value form
+ local str_m, str_s = string.match(str, "^(%d?%d?);(%d?%d?)$")
+ if str_m and str_s then
+ --atdebug("2v",str_m, str_s)
+ local m, s = v_n(str_m), v_n(str_s)
+ if m and s then
+ return rwt.new(0,m,s)
+ end
+ end
+end
+
+---
+
+function rwt.add(t1, t2)
+ local t1s = rwt.to_secs(t1)
+ local t2s = rwt.to_secs(t1)
+ return rwt.to_table(t1s + t2s)
end
-- How many seconds FROM t1 TO t2
function rwt.diff(t1, t2)
- local t1s = rwt.to_sec(t1)
- local t2s = rwt.to_sec(t1)
+ local t1s = rwt.to_secs(t1)
+ local t2s = rwt.to_secs(t1)
return t2s - t1s
end
-- Subtract t2 from t1 (inverted argument order compared to diff())
function rwt.sub(t1, t2)
- return rwt.from_sec(rwt.diff(t2, t1))
+ return rwt.to_table(rwt.diff(t2, t1))
end
-- Adjusts t2 by thresh and then returns time from t1 to t2
function rwt.adj_diff(t1, t2, thresh)
local newc = rwt.adjust_cycle(t2, thresh, t1)
- local t1s = rwt.to_sec(t1)
- local t2s = rwt.to_sec(t2, newc)
+ local t1s = rwt.to_secs(t1)
+ local t2s = rwt.to_secs(t2, newc)
return t1s - t2s
end
@@ -121,9 +188,9 @@ rwt.CA_CENTER = 30*60 -- If time is within past 30 minutes of reftime, selecte
function rwt.adjust_cycle(rwtime, reftime_p, thresh)
local reftime = reftime_p or rwt.now()
- local reftimes = rwt.to_sec(reftime)
+ local reftimes = rwt.to_secs(reftime)
- local rwtimes = rwt.to_sec(rwtime, 0)
+ local rwtimes = rwt.to_secs(rwtime, 0)
local timeres = reftimes + thresh - rwtimes
local cycles = atfloor(timeres / (60*60))
@@ -132,22 +199,10 @@ end
function rwt.adjust(rwtime, reftime, thresh)
local cp = rwt.copy(rwtime)
- cp.c = rwt.adjust(rwtime, reftime, thresh)
+ cp.c = rwt.adjust_cycle(rwtime, reftime, thresh)
return cp
end
-function rwt.to_string(rwtime, no_cycle, places)
- local pl = places or 2
- if (rwtime.c~=0 or pl>=3) and not no_cycle then
- return string.format("%d;%02d;%02d", rwtime.c, rwtime.m, rwtime.s)
- elseif rwtime.m~=0 or pl>=2 then
- return string.format("%02d;%02d", rwtime.m, rwtime.s)
- else
- return string.format(";%02d",rwtime.s)
- end
- return str
-end
-
-- Useful for departure times: returns time (in seconds)
-- until the next (adjusted FUTURE) occurence of deptime is reached
-- in this case, rwtime is used as reftime and deptime should lie in the future of rwtime
@@ -158,5 +213,49 @@ function rwt.get_time_until(deptime, rwtime_p)
end
+-- Helper functions for handling "repeating times" (rpt)
+-- Those are generic declarations for time intervals like "every 5 minutes", with an optional offset
+-- ( /02;00-00;45 in timetable syntax
+
+-- Get the time (in seconds) until the next time this rpt occurs
+function rwt.time_to_next_rpt(rwtime, rpt_interval, rpt_offset)
+ local rpti_s = rwt.to_secs(rpt_interval)
+
+ return (rpti_s - rwt.time_from_last_rpt(rwtime, rpti_s, rpt_offset)) % rpti_s
+ -- Modulo is just there to clip a false value of rpti_s to 0
+end
+
+
+-- Get the time (in seconds) since the last time this rpt occured
+function rwt.time_from_last_rpt(rwtime, rpt_interval, rpt_offset)
+ local rwtime_s = rwt.to_secs(rwtime)
+ local rpti_s = rwt.to_secs(rpt_interval)
+ local rpto_s = rwt.to_secs(rpt_offset)
+
+ return ((rwtime_s - rpto_s) % rpti_s)
+end
+
+-- From rwtime, get the next time that is divisible by rpt_interval offset by rpt_offset
+function rwt.next_rpt(rwtime, rpt_interval, rpt_offset)
+ local rwtime_s = rwt.to_secs(rwtime)
+ local rpti_s = rwt.to_secs(rpt_interval)
+ local time_from_last = rwt.time_from_last_rpt(rwtime_s, rpti_s, rpt_offset)
+
+ local res_s = rwtime_s - time_from_last + rpti_s
+
+ return rwt.to_table(res_s)
+end
+
+-- from rwtime, get the last time that this rpt matched (which is actually just next_rpt - rpt_offset
+function rwt.last_rpt(rwtime, rpt_interval, rpt_offset)
+ local rwtime_s = rwt.to_sec(rwtime)
+ local rpti_s = rwt.to_sec(rpt_interval)
+ local time_from_last = rwt.time_from_last_rpt(rwtime, rpt_interval, rpt_offset)
+
+ local res_s = rwtime_s - time_from_last
+
+ return rwt.to_table(res_s)
+end
+
advtrains.lines.rwt = rwt