makeclass('login')
makeclass("engio")
makeclass('cube')
makeclass('sphere')

function login.init()
    local actor = tangible.actor()
    dprint("login.init:", actor)
    tangible.animinit(actor, {bp="character", plane="earth", xyz={0, 0, 90}})
    tangible.build{class=cube, xyz={500,-100,0}}
    tangible.build{class=sphere, xyz={500,100,0}}
end

function engio.move(action, xyz, facing)
    -- todo: sanity check the parameters.
    local actor = tangible.actor()
    dprint("engio.move ", action, " ", xyz[1], " ", xyz[2], " ", xyz[3])
    tangible.animate(actor, nil, {action=action, xyz=xyz, facing=facing})
end

function cube.lookhotkeys(keys)
    keys:add("X", "Cube Hi", function () dprint("Cube Hi") end)
    keys:add("A", "Cube Bye", function () dprint("Cube Bye") end)
    keys:add("Y", "Cube Yo", function () dprint("Cube Yo") end)
end

function sphere.lookhotkeys(keys)
    keys:add("X", "Sphere Hi", function () dprint("Sphere Hi") end)
    keys:add("A", "Sphere Bye", function () dprint("Sphere Bye") end)
    keys:add("Y", "Sphere Yo", function () dprint("Sphere Yo") end)
end


function engio.getlookat()
    local class = tangible.getclass(tangible.place())

    -- if the tangible is not of any class, return empty string.
    if class == nil then
        return ""
    end

    -- if the class has a function 'lookhotkeys', then the correct
    -- look-at widget is 'hotkeys'.  We're going to automatically 
    -- generate the correct response.
    if class.lookhotkeys ~= nil then
        local keys = hotkeylist.create()
        class.lookhotkeys(keys)
        setmetatable(keys, nil)
        return keys
    end

    -- otherwise, if the class has a function 'getlookat', use that.
    if class.getlookat ~= nil then
        return class.getlookat()
    end

    -- by default, return the empty string.
    return ""
end