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bios/Arcade/MAME/plugins/timer/init.lua

@@ -0,0 +1,79 @@
+-- license:BSD-3-Clause
+-- copyright-holders:Vas Crabb
+-- TODO: track time properly across soft reset and state load
+local exports = {
+	name = 'timer',
+	version = '0.0.3',
+	description = 'Game play timer',
+	license = 'BSD-3-Clause',
+	author = { name = 'Vas Crabb' } }
+
+local timer = exports
+
+local reset_subscription, stop_subscription
+
+function timer.startplugin()
+	local total_time = 0
+	local start_time = 0
+	local play_count = 0
+	local emu_total = emu.attotime()
+
+	local reference = 0
+	local lastupdate
+	local highlight -- hacky - workaround for the menu not remembering the selected item if its ref is nullptr
+
+
+	local function sectohms(time)
+		local hrs = time // 3600
+		local min = (time % 3600) // 60
+		local sec = time % 60
+		return string.format(_p('plugin-timer', '%03d:%02d:%02d'), hrs, min, sec)
+	end
+
+	local function menu_populate()
+		lastupdate = os.time()
+		local refname = (reference == 0) and _p('plugin-timer', 'Wall clock') or _p('plugin-timer', 'Emulated time')
+		local time = (reference == 0) and (lastupdate - start_time) or manager.machine.time.seconds
+		local total = (reference == 0) and (total_time + time) or (manager.machine.time + emu_total).seconds
+		return
+			{
+				{ _p("plugin-timer", "Reference"), refname, (reference == 0) and 'r' or 'l' },
+				{ '---', '', '' },
+				{ _p("plugin-timer", "Current time"), sectohms(time), "off" },
+				{ _p("plugin-timer", "Total time"), sectohms(total), "off" },
+				{ _p("plugin-timer", "Play Count"), tostring(play_count), "off" } },
+			highlight,
+			"idle"
+	end
+
+	local function menu_callback(index, event)
+		if (index == 1) and ((event == 'left') or (event == 'right') or (event == 'select')) then
+			reference = reference ~ 1
+			return true
+		end
+		highlight = index
+		return os.time() > lastupdate
+	end
+
+
+	reset_subscription = emu.add_machine_reset_notifier(
+		function ()
+			if emu.romname() ~= '___empty' then
+				start_time = os.time()
+				local persister = require('timer/timer_persist')
+				total_time, play_count, emu_total = persister:start_session()
+			end
+		end)
+
+	stop_subscription = emu.add_machine_stop_notifier(
+		function ()
+			if emu.romname() ~= '___empty' then
+				local persister = require('timer/timer_persist')
+				persister:update_totals(start_time)
+			end
+		end)
+
+	emu.register_menu(menu_callback, menu_populate, _p("plugin-timer", "Timer"))
+end
+
+return exports