mame/plugins/layout/init.lua
2016-08-30 15:53:27 +10:00

50 lines
1.3 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 = {}
exports.name = "layout"
exports.version = "0.0.1"
exports.description = "Layout helper plugin"
exports.license = "The BSD 3-Clause License"
exports.author = { name = "Carl" }
local layout = exports
function layout.startplugin()
local scripts = {}
local function prepare_layout(script)
local env = { machine = manager:machine(), pairs = pairs, ipairs = ipairs,
table = { insert = table.insert, remove = table.remove } }
local script, err = load(script, script, "t", env)
if not script then
emu.print_verbose("error loading layout script " .. err)
return
end
local name
script, name = script()
scripts[name] = script
end
emu.register_callback(prepare_layout, "layout")
emu.register_frame(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_start(function()
for num, scr in pairs(scripts) do
if scr.reset then
scr.reset()
end
end
end)
emu.register_stop(function() scripts = {} end)
end
return exports