function ia.update_mummy(spr)
    map.surf(rooms.surf_foreground)
    if spr.state == templates.ALIVE then
        if sprites.hero.state == templates.ALIVE then
            local x1,y1,w1,h1 = util.aabb(spr) -- El meu aabb
            local x2,y2,w2,h2 = util.aabb(sprites.hero) -- el aabb del heroi
            -- Si toca al heroi...
            if util.check_aabb_collision(x1,y1,w1,h1, x2,y2,w2,h2) then
                sprites.hero.hit()
            end
        end

        if spr.flipped then
            local tx, ty = (spr.pos.x+3)>>3, (spr.pos.y+15)>>3
            if map.tile(tx,ty) < 16 and map.tile(tx,ty-1) < 16 and map.tile(tx,ty+1) > 0 then
                spr.pos.x = spr.pos.x - 1
            else
                spr.flipped = not spr.flipped
            end
        else
            local tx, ty = (spr.pos.x+12)>>3, (spr.pos.y+15)>>3
            if map.tile(tx,ty) < 16 and map.tile(tx,ty-1) < 16 and map.tile(tx,ty+1) > 0 then
                spr.pos.x = spr.pos.x + 1
            else
                spr.flipped = not spr.flipped
            end
        end
    elseif spr.state == templates.DYING then
        if spr.animation ~= "mummy_dying" then
            sprites.set_animation(spr, "mummy_dying")
        else
            if spr.current_frame == 8 then
                sprites.set_animation(spr, "mummy_dead")
                spr.state = templates.DEAD
            end
        end
    elseif spr.state == templates.DEAD then
        if spr.current_wait == 1 then
            sprites.set_animation(spr, "mummy_undying")
            spr.state = templates.RESURRECTING
        end
    elseif spr.state == templates.RESURRECTING then
        if spr.current_frame == 13 then
            sprites.set_animation(spr, "mummy_walk")
            spr.state = templates.ALIVE
        end
    end
end