-- Button state management - Ever want an easy way to know whether a button's been tapped, held, released, for how long? Well, here you go. player.buttonstate[blah] returns x frames being held, or -x frames being released
local dupeprevent = false

addHook("MobjThinker", function(mo)
    local player = mo.player
    if player.buttonstate and not dupeprevent then return end -- Avoid processing buttonstate multiple times per frame if multiple loaded addons have this code snippet in them!
    dupeprevent = true

    if not player.buttonstate then player.buttonstate = {} end
    local bs = player.buttonstate

    local function state(cond, key)
        if cond then
            bs[key] = max(($1 or 0)+1, 1)
        else
            bs[key] = min(($1 or 0)-1, -1)
        end
    end

    -- Handle normal buttons - get these with player.buttonstate[BT_WHATEVER]
    for _,v in ipairs({
        BT_JUMP, BT_USE, BT_ATTACK, BT_FIRENORMAL,
        BT_CAMLEFT, BT_CAMRIGHT,
        BT_WEAPONNEXT, BT_WEAPONPREV, BT_TOSSFLAG,
        BT_CUSTOM1, BT_CUSTOM2, BT_CUSTOM3
    }) do
        state(player.cmd.buttons & v, v)
    end

    -- Handle weapon quick select buttons - get these with player.buttonstate[weaponnum] (can probably use WEP_WHATEVER+1?)
    for i = 1,BT_WEAPONMASK-1 do
        state(player.cmd.buttons & BT_WEAPONMASK == i, i)
    end

    -- Finally, handle directional taps (no analog support, soz) - get these with player.buttonstate["direction"] (up, down, left, right)
    for k,v in pairs({
        up = function(p) return p.cmd.forwardmove > 0 end,
        down = function(p) return p.cmd.forwardmove < 0 end,
        left = function(p) return p.cmd.sidemove < 0 end,
        right = function(p) return p.cmd.sidemove > 0 end
    }) do
        state(v(player), k)
    end
end, MT_PLAYER)