local WIDTH = 800
local HEIGHT = 600
local MAX_LIVES = 15

local SPEED = 5
local TIME_BETWEEN_REQS = 3

local player = {x = 400, y = 300, dx = 0, dy = 0, lives = MAX_LIVES}

local requirements = {}

requirements[1] = {
	check = function ()
		local speed = (player.dx*player.dx + player.dy*player.dy)
		return speed < 0.7 * SPEED and speed > 0.1 * SPEED
	end,
	str = "Du bevæger dig for langsomt!"
}

requirements[2] = {
	check = function ()
		return (player.dx*player.dx + player.dy*player.dy) > 0.7 * SPEED
	end,
	str = "Du bevæger dig for hurtigt!"
}

requirements[3] = {
	check = function ()
		return (player.dx*player.dx + player.dy*player.dy) < 0.1 * SPEED
	end,
	str = "Du står stille!"
}

requirements[4] = {
	check = function ()
		return player.dx*player.dx > 0.7 * SPEED and player.dy*player.dy < 0.1 * SPEED
	end,
	str = "Du bevæger dig for meget på X aksen!"
}

requirements[5] = {
	check = function ()
		return player.dx*player.dx < 0.1 * SPEED and player.dy*player.dy > 0.7 * SPEED
	end,
	str = "Du bevæger dig for meget på Y aksen!"
}

requirements[6] = {
	check = function ()
		return player.dx*player.dx > 0.5 * SPEED and player.dy*player.dy > 0.5 * SPEED
	end,
	str = "Du bevæger dig for meget på skråt!"
}

requirements[7] = {
	check = function ()
		return player.lives > MAX_LIVES/2 and math.random() < 0.2
	end,
	str = "Du er for synlig!"
}

requirements[8] = {
	check = function ()
		return math.random() < 0.1
	end,
	str = "Du forstår jo ikke hvad du laver!"
}

requirements[9] = {
	check = function ()
		return player.x < 100 or player.x > WIDTH - 100 or player.y < 100 or player.y > WIDTH - 100
	end,
	str = "Du er for tæt på kanten!"
}

requirements[10] = {
	check = function ()
		return ((player.x-WIDTH/2)^2 + (player.y-HEIGHT/2)^2) < 70
	end,
	str = "Du er for tæt på midten!"
}

requirements[11] = {
	check = function ()
		return math.random() < 0.03
	end,
	str = "Fuck dig!"
}


local req_time = TIME_BETWEEN_REQS
local last_req = nil
local current_req = nil

local function select_next_req ()
	current_req = nil
	while not current_req do
		local req = requirements[math.random(#requirements)]
		if req.check() and last_req ~= req then
			current_req = req
		end
	end
	last_req = current_req
end

function love.load ()
	love.window.setTitle("dIntDesJam #1 (JMAA)")
end

local req_x, req_y = 0, 0

function love.update (dt)
	player.x = (player.x + player.dx + WIDTH) % WIDTH
	player.y = (player.y + player.dy + HEIGHT) % HEIGHT
	player.dx, player.dy = player.dx*(1-dt), player.dy*(1-dt)

	if love.keyboard.isDown("w") then
		player.dy = player.dy - dt * SPEED
	elseif love.keyboard.isDown("s") then
		player.dy = player.dy + dt * SPEED
	end
	if love.keyboard.isDown("a") then
		player.dx = player.dx - dt * SPEED
	elseif love.keyboard.isDown("d") then
		player.dx = player.dx + dt * SPEED
	end

	req_time = req_time - dt
	if req_time <= 0 then
		req_x, req_y = math.random(WIDTH-300)+50, math.random(HEIGHT-300)+50
		req_time = TIME_BETWEEN_REQS
		player.lives = player.lives - 1
		select_next_req()
	end
end

function love.draw ()
	love.graphics.setColor(255,255,255)

	if current_req then
		love.graphics.print(current_req.str, req_x, req_y)
	end

	love.graphics.setColor(255,255,255, 255 * player.lives/MAX_LIVES)
	love.graphics.circle("fill", player.x, player.y, 10)
end