mame/plugins/layout/init.lua
Vas Crabb b67b969bf0 -Improved some Lua APIs:
* Moved several machine lifecycle callbacks to the notifier/subscriber
  model.  The old callback registration model is still available for
  them for now, but prints a deprecation warning.
* Added pre-save/post-load notifications.
* Use a single allocated timer rather than one anonymous timer per
  waiter.  Waiters no longer prevent saved states from being loaded.
* Clean up outstanding waiters on stop or state load rather than just
  leaking them.
* Started documenting parts of the emulator interface object that should
  be relatively stable.

-imagedev/avivideo.cpp: Fixed an object leak on unload.  Also changed
 some other media image devices to use smart pointers.
2023-04-07 06:20:40 +10:00

72 lines
1.8 KiB
Lua

-- license:BSD-3-Clause
-- copyright-holders:Carl
-- Layout scripts should return a table and a string. The table can have two optional keys reset and frame
-- which have functions for values called on reset and frame draw respectively and the string is a unique name.
local exports = {
name = "layout",
version = "0.0.1",
description = "Layout helper plugin",
license = "BSD-3-Clause",
author = { name = "Carl" } }
local layout = exports
local frame_subscription, stop_subscription
function layout.startplugin()
local scripts = {}
local function prepare_layout(file, script)
local env = {
machine = manager.machine,
emu = {
attotime = emu.attotime,
render_bounds = emu.render_bounds,
render_color = emu.render_color,
print_verbose = emu.print_verbose,
print_error = emu.print_error,
print_warning = emu.print_warning,
print_info = emu.print_info,
print_debug = emu.print_debug },
file = file,
print = print,
pairs = pairs,
ipairs = ipairs,
string = string,
tonumber = tonumber,
tostring = tostring,
table = table }
local script, err = load(script, script, "t", env)
if not script then
emu.print_verbose("error loading layout script " .. err)
return
end
local hooks = script()
if hooks ~= nil then
table.insert(scripts, hooks)
end
end
emu.register_callback(prepare_layout, "layout")
frame_subscription = emu.add_machine_frame_notifier(function ()
if manager.machine.paused then
return
end
for num, scr in pairs(scripts) do
if scr.frame then
scr.frame()
end
end
end)
emu.register_prestart(function ()
for num, scr in pairs(scripts) do
if scr.reset then
scr.reset()
end
end
end)
stop_subscription = emu.add_machine_stop_notifier(function ()
scripts = {}
end)
end
return exports