rock-gold cluster visualizer

function color_change()
    tpt.start_getPartIndex()
    while tpt.next_getPartIndex() do
        local index = tpt.getPartIndex()
        if tpt.get_property("ctype", index) == elem.DEFAULT_PT_GOLD then
            tpt.set_property("dcolour", 0xff0000ff, index)
        end
        if tpt.get_property("tmp", index) == 1 then
            tpt.set_property("dcolour", 0xffff0000, index)
        end
    end
end

event.register(event.tick, color_change)