require "mapa"

batarang = {
    items = {},
    cooldown = 0,
    dx = 8,

    draw = function()
        surf.source(batman.surface)
        for i, k in pairs(batarang.items) do
            local flip_h, flip_v = false, false
            if k.s==1 or k.s==2 then flip_v = true end
            if k.s==2 or k.s==3 then flip_h = true end
            draw.surf(123,27,5,5,k.x,k.y,5,5, flip_h, flip_v)
        end
    end,

    update = function()
        if batarang.cooldown > 0 then batarang.cooldown = batarang.cooldown - 1 end
        for i, k in pairs(batarang.items) do
            local tx, ty = ((k.x+2)//8), ((k.y+2)//8)
            if (mapa.isSolid(tx,ty)) then
                batarang.items[i] = nil
            else
                k.x = k.x + k.dx
                k.s = k.s + 1
                if (k.s==4) then k.s = 0 end
            end
        end
    end,

    new = function(x,y,flip)
        --if batarang.cooldown == 0 then
            table.insert(batarang.items, {x=x, y=y, s=0, dx=flip and -8 or 8})
        --    batarang.cooldown = 5
        --end
    end,

}