-- "gameconfig" is kind of a misnomer, to be honest.
-- it's more like things the end user shouldn't have to change.

local function jp_buttons(s)
    s = string.lower(s or "")
    local t = {
        up     = false, down   = false, left   = false, right  = false,
        select = false, start  = false, B      = false, A      = false,
    }
    for w in s:gmatch("%a+") do
        if w == 'up' then t.up = true
        elseif w == 'down' then t.down = true
        elseif w == 'left' then t.left = true
        elseif w == 'right' then t.right = true
        elseif w == 'select' then t.select = true
        elseif w == 'start' then t.start = true
        elseif w == 'a' then t.A = true
        elseif w == 'b' then t.B = true
        else error(("unknown button: %s"):format(w)) end
    end
    return t
end

local gcfg = {
    input_size = 60 + 4 - 19 + 1, -- TODO: let the script figure this out for us.
    tile_count = 17 * 11,

    ok_routines = {
        [0x4] = true, -- sliding down flagpole
        [0x5] = true, -- end of level auto-walk
        [0x7] = true, -- start of level auto-walk
        [0x8] = true, -- normal (in control)
        [0x9] = true, -- acquiring mushroom
        [0xA] = true, -- losing big mario
        [0xB] = true, -- uhh
        [0xC] = true, -- acquiring fireflower
    },

    bad_states = {
        power = true,
        waiting_demo = true,
        playing_demo = true,
        unknown = true,
        lose = true,
    },

    jp_lut = {
        jp_buttons(),
        jp_buttons("a"),
        jp_buttons("left"),
        jp_buttons("right"),
        jp_buttons("b left"),
        jp_buttons("b right"),
        jp_buttons("a left"),
        jp_buttons("a right"),
        jp_buttons("b a left"),
        jp_buttons("b a right"),
        jp_buttons("down"),
        jp_buttons("a down"),
        jp_buttons("up"),
    },
}

return setmetatable(gcfg, {
    __index = function(t, n)
        error("cannot use undeclared gameconfig '" .. tostring(n) .. "'", 2)
    end
})