Hero Punch

if love.keyboard.isDown("z") then
    hero.punch=1 -- the player is trying to punch
    time.punch=time.punch+dt -- count downtime of z
    -- block player from cheating by holding down z
    if time.punch>hero.punchduration then
        hero.punch=0 -- turn off punching ( in love.draw() )
    else end
    if time.punch>0.6 then -- if player keeps punch held
        time.punch=0 -- reset timer after 0.6s
    else end
else
    hero.punch=0 -- the player is not trying to punch
    time.punch=0 -- reset when he releases the key
end