mirror of
https://github.com/holub/mame
synced 2025-04-27 02:33:13 +03:00
ec80428647
The things that were previously called device iterators are not iterators in the C++ sense of the word. This is confusing for newcomers. These have been renamed to be device enumerators. Several Lua methods and properties that previously returned tables now return lightweight wrappers for the underlying objects. This means creating them is a lot faster, but you can't modify them, and the performance characteristics of different operations varies. The render manager's target list uses 1-based indexing to be more like idiomatic Lua. It's now possible to create a device enumerator on any device, and then get subdevices (or sibling devices) using a relative tag. Much more render/layout functionality has been exposed to Lua. Layout scripts now have access to the layout file and can directly set the state of an item with no bindings, or register callbacks to obtain state. Some things that were previously methods are now read-only properties. Layout files are no longer required to supply a "name". This was problematic because the same layout file could be loaded for multiple instances of the same device, and each instance of the layout file should use the correct inputs (and in the future outputs) for the device instance it's associated with. This should also fix video output with MSVC builds by avoiding delegates that return things that don't fit in a register.
58 lines
1.4 KiB
Lua
58 lines
1.4 KiB
Lua
-- license:BSD-3-Clause
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-- copyright-holders:Carl
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-- Layout scripts should return a table and a string. The table can have two optional keys reset and frame
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-- which have functions for values called on reset and frame draw respectively and the string is a unique name.
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local exports = {}
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exports.name = "layout"
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exports.version = "0.0.1"
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exports.description = "Layout helper plugin"
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exports.license = "The BSD 3-Clause License"
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exports.author = { name = "Carl" }
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local layout = exports
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function layout.startplugin()
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local scripts = {}
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local function prepare_layout(file, script)
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local env = {
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machine = manager:machine(),
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file = file,
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print = print,
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pairs = pairs,
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ipairs = ipairs,
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string = { format = string.format },
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table = { insert = table.insert, remove = table.remove } }
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local script, err = load(script, script, "t", env)
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if not script then
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emu.print_verbose("error loading layout script " .. err)
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return
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end
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local hooks = script()
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if hooks ~= nil then
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table.insert(scripts, hooks)
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end
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end
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emu.register_callback(prepare_layout, "layout")
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emu.register_frame(function()
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if manager:machine().paused then
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return
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end
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for num, scr in pairs(scripts) do
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if scr.frame then
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scr.frame()
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end
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end
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end)
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emu.register_start(function()
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for num, scr in pairs(scripts) do
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if scr.reset then
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scr.reset()
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end
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end
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end)
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emu.register_stop(function() scripts = {} end)
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end
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return exports
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