local window = require('window')
local entity = require('entity')

-- prototype of room
-- - background
-- - objects
-- - edges
local room = entity:from{
    x = 0, y = 0,
    background = love.graphics.newImage("res/defaultbg.png"),
    edges = {},
    objects = {},
}

function edge_position(e)
    local wd = screen.width - e.width
    local hd = screen.height - e.height

    local t = {
        ['left'] = { 0, hd/2 },
        ['right'] = { wd, hd/2 },
        ['up'] = { wd/2, 0 },
        ['down'] = { wd/2, hd },
    }

    local p = t[e.dir]
    return p[1], p[2]
end

function room:insert(obj)
    table.insert(self.objects, obj)
    obj.idx = #self.objects
end

function room:remove(obj)
    table.remove(self.objects, obj.idx)

    for i, v in ipairs(self.objects) do
        v.idx = i
    end
end

room.mousepressed = window.propagate{'edges', 'objects'}

function room:draw()
    love.graphics.draw(self.background, 0, 0)

    for i, v in ipairs(self.objects) do
        v:draw()
    end

    for i, v in ipairs(self.edges) do
        v:draw()
    end
end

return room