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

-- This gets called on every login except the admin user.
function login.init()
    local actor = tangible.actor()
    dprint("login.init:", actor)
    tangible.animinit(actor, {bp="character", plane="earth", xyz={0, 0, 90}})
end

-- This gets called on the admin user.  You can call login.init in here if you want.
function world.init()
    local actor = tangible.actor()
    dprint("world.init:", actor)
    tangible.build{class=cube,   plane="earth", xyz={500,-100,0}}
    tangible.build{class=sphere, plane="earth", xyz={500,100,0}}
    login.init()
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("Z", "Cube Hi", function () dprint("Doing Cube Hi") end)
    keys:add("X", "Cube Bye", function () dprint("Doing Cube Bye") end)
    keys:add("C", "Cube Yo", function () dprint("Doing Cube Yo") end)
end

function sphere.lookhotkeys(keys)
    keys:add("Z", "Sphere Hi", function () dprint("Doing Sphere Hi") end)
    keys:add("X", "Sphere Bye", function () dprint("Doing Sphere Bye") end)
    keys:add("C", "Sphere Yo", function () dprint("Doing 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

function engio.presshotkey(action)
    local class = tangible.getclass(tangible.place())

    -- if the tangible doesn't have a 'lookhotkeys' function, do nothing
    if class == nil or class.lookhotkeys == nil then
        return
    end

    local press = hotkeypress.create(action)
    class.lookhotkeys(press)
    local closure = press.closure
    if closure ~= nil then
        closure()
    end
end