local window = require('window')

-- prototype of room
-- - background
-- - objects
-- - edges
local room = {
    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

local mt = { __index = room }

function room:new()
    local m = {}
    setmetatable(m, mt)
    return m
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
        local x, y = edge_position(v)
        love.graphics.draw(edge_arrow[v.dir], x, y)
    end
end

return room