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bryanthaboi
50 lines
2.1 KiB
Lua
50 lines
2.1 KiB
Lua
-- Which Nintendo console this is running on, or nil everywhere else.
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--
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-- love.system.getOS() cannot answer this. The LOVE Potion build defines
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-- __OS__ as "Horizon" for BOTH the 3DS and the Switch, and "Cafe" for the
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-- Wii U (lovebrew/lovepotion CMakeLists.txt), so an OS test meaning "3DS"
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-- would equally catch a Switch -- two machines separated by roughly two orders
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-- of magnitude of CPU and an order of magnitude of pixels. Anything scaled to
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-- the hardware has to distinguish them.
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--
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-- The console name is published separately, as the love._console string
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-- ("3DS" / "Switch" / "Wii U", set in source/modules/love/love.cpp). It is
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-- absent on desktop LOVE, on Android and on iOS, which is what makes its mere
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-- presence the "is this a console" probe.
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--
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-- Nothing here is cached: the two table lookups are free next to a frame, and
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-- caching would freeze whatever the first caller saw, which tests override.
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local Console = {}
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-- The console names LOVE Potion publishes. An unrecognized string is treated
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-- as "not a console we know", not as a console -- a future port would need its
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-- own branches here anyway, and guessing would silently apply 3DS-shaped
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-- compromises to hardware that does not need them.
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local NAMES = { ["3DS"] = true, ["Switch"] = true, ["Wii U"] = true }
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-- "3DS" / "Switch" / "Wii U", or nil.
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function Console.name()
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local name = love and rawget(love, "_console")
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if type(name) == "string" and NAMES[name] then return name end
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return nil
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end
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-- Running on a LOVE Potion console at all. Falls back to the OS name so a
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-- build that stops publishing love._console still takes the console paths
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-- (both strings are unique to LOVE Potion), even though it cannot then say
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-- which console it is.
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function Console.isConsole()
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if Console.name() then return true end
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local os = love and love.system and love.system.getOS and love.system.getOS()
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return os == "Horizon" or os == "Cafe"
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end
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-- The 3DS specifically: a 400x240 top screen on a 268MHz ARM11, which is the
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-- one target where effects the other two render for free have to be dropped.
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function Console.is3DS()
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return Console.name() == "3DS"
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end
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return Console
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