function love.load()
    map = {} -- 64x48
    for x=0, 63 do
        map[x] = {}
        for y=0, 47 do
            map[x][y] = 0
        end
    end

    convert = 0

    love.graphics.setMode(1024, 768, false)
end

function love.update()
    if love.mouse.isDown("l") then
        x = love.mouse.getX()
        y = love.mouse.getY()
        map[math.floor(x/16)][math.floor(y/16)] = convert
    end
end

function love.keypressed(key)
    if key == "1" then convert = 0 end
    if key == "2" then convert = 1 end
    if key == "3" then convert = 2 end
    if key == "4" then convert = 3 end
    if key == "return" then
        for x=0, 63 do
            local str = ""
            for y=0, 47 do
                str = str .. "0"..map[x][y].."0"..map[x][y].." "
            end
            print("fb     "..str)
        end
    end
end

function love.draw()
    for x=0, 63 do
        for y=0, 47 do
            if map[x][y] ~= 0 then
                if map[x][y] == 1 then
                    love.graphics.setColor(255, 0, 0)
                end
                if map[x][y] == 2 then
                    love.graphics.setColor(0, 0, 255)
                end
                if map[x][y] == 3 then
                    love.graphics.setColor(0, 255, 0)
                end
                love.graphics.rectangle("fill", x*16, y*16, 16, 16)
            end
            love.graphics.setColor(127, 127, 127)
            if math.floor(love.mouse.getX()/16) == x and math.floor(love.mouse.getY()/16) == y then
                if convert == 0 then
                    love.graphics.setColor(0, 0, 0)
                end
                if convert == 1 then
                    love.graphics.setColor(255, 0, 0)
                end
                if convert == 2 then
                    love.graphics.setColor(0, 0, 255)
                end
                if convert == 3 then
                    love.graphics.setColor(0, 255, 0)
                end
            end
            love.graphics.printf(map[x][y], x*16, y*16, 16, "right")
        end
    end
end