function love.load()
    love.graphics.setMode(640, 480, false, true, 0)
    level, var_user_img = 1, 2
    show_tuto = true
    _img = {
        love.graphics.newImage("case1.png"),
        love.graphics.newImage("case2.png"),
        love.graphics.newImage("case3.png")
    }
    map = {
        {
            {2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2},
            {2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2},
            {2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2}
        }
    }

    obj = {block = {w = _img[1]:getWidth(), h = _img[1]:getHeight(), img = _img}}
    user = {x = 1, y = 1, img = obj.block.img[var_img]}
end

function love.draw()
    for i = 1, #map[level] do
        for j = 1, #map[level][1] do
                love.graphics.draw(obj.block.img[map[level][i][j]], j*obj.block.w-obj.block.w, i*obj.block.h-obj.block.h)
        end
    end
    love.graphics.draw(user.img, user.x*obj.block.w-obj.block.w, user.y*obj.block.h-obj.block.h)
    if show_tuto then
        love.graphics.print("Press 1 or 2 to choose a block,\nUse left mouse button to place a block,\nUse right mouse button to erase block,\nAnd use S to hide this message", 32, 32)
    end
end

function love.update(dt)
    if love.keyboard.isDown("1") then
        var_user_img = 2
    elseif love.keyboard.isDown("2") then
        var_user_img = 3
    elseif love.keyboard.isDown("s") then
        show_tuto = false
    end

    user.x = math.ceil(love.mouse.getX()/obj.block.w)
    user.y = math.ceil(love.mouse.getY()/obj.block.h)

    if love.mouse.isDown("l") then
        map[level][user.y][user.x] = var_user_img
    elseif love.mouse.isDown("r") then
        map[level][user.y][user.x] = 1
    end

    user.img = obj.block.img[var_user_img]
end