-- Cette ligne permet d'afficher des traces dans la console pendant l'éxécution
io.stdout:setvbuf('no')

-- Cette ligne permet de filtrer les contours des images quand elles sont redimentionnées
love.graphics.setDefaultFilter("nearest")

-- Cette ligne permet de déboguer pas a pas dans ZeroBraneStudio
if arg[#arg] == "-debug" then require("mobdebug").start() end

local musicFont = love.audio.newSource("musiques/Alexander Ehlers - Flags.mp3", "stream")


player = {}
player.engineOn = false
player.engineBoost = false


sprites = {}

asteroids = {}



timer = 0



------------------------------------------------------------------------------
-----------------CREATION SPRITE---CREATION SPRITE---CREATION SPRITE----------
------------------------------------------------------------------------------

function CreateSprite(pNomImage, pX, pY)
  -- Fonction pour générer tous les sprites avec quelques paramètres
  sprite = {}
  sprite.x = pX
  sprite.y = pY
  sprite.vx = 0
  sprite.vy = 0
  sprite.speed = 0.001
  sprite.speedBoost = 0.005
  sprite.image = love.graphics.newImage("images/"..pNomImage..".png")
  sprite.w = sprite.image:getWidth()
  sprite.h = sprite.image:getHeight()
  sprite.angle = 270
  table.insert(sprites, sprite)
  return sprite

end

---------------------------------------------------------------------------------
----------------------CREATION ASTEROID---CREATION ASTEROID---CREATION ASTEROID--
---------------------------------------------------------------------------------
function CreateSpriteAsteroid(pNomImage, aX, aY, aA, aVx, aVy)

asteroid = {}
asteroid.image = love.graphics.newImage("images/"..pNomImage..".png")
asteroid.x = aX or love.math.random(10, love.graphics.getWidth() - 100)
asteroid.y = aY or love.math.random(10, love.graphics.getHeight() - 100)
asteroid.angle = aA or math.rad(love.math.random(1, 360))
asteroid.speed = love.math.random(5,50) / 100
asteroid.vx = aVx or math.cos(asteroid.angle) * asteroid.speed
asteroid.vy = aVy or math.sin(asteroid.angle) * asteroid.speed
table.insert(asteroids, asteroid)
return asteroid

end

-----------------------------------------------------------------------------
--------------------LOAD---LOAD---LOAD---------------------------------------
-----------------------------------------------------------------------------

function love.load()

  mainFont = love.graphics.newImage("images/Space.png")
  --love.audio.play(musicFont)

  love.window.setMode(1280, 720)

  screenWidth = love.graphics.getWidth()
  screenHeight = love.graphics.getHeight()

  player = CreateSprite("Ship", (screenWidth/2), (screenHeight/2))
  player.engine = love.graphics.newImage("images/Engine.png")

  local meteor
  for meteor=1, love.math.random(2, 10) do
    CreateSpriteAsteroid("Meteor1", aX, aY, aA, aVx, aVy)
  end


end

-----------------------------------------------------------------------------
-------------------COLLISION---COLLISION---COLLISION-------------------------
-----------------------------------------------------------------------------

function SpriteCollision()



end

-----------------------------------------------------------------------------
-------------------UPDATE---UPDATE---UPDATE----------------------------------
-----------------------------------------------------------------------------

function love.update(dt)

  if love.keyboard.isDown("a") then
    player.angle = player.angle - 0.3
  end

  if love.keyboard.isDown("d") then
    player.angle = player.angle + 0.3
  end

  if love.keyboard.isDown("w") then
    player.engineOn = true
    local angle = math.rad(player.angle)
    local force_x = math.cos(angle) * player.speed
    local force_y = math.sin(angle) * player.speed
    player.vx = player.vx + force_x
    player.vy = player.vy + force_y
    else
    player.engineOn = false
  end

  player.x = player.x + player.vx
  player.y = player.y + player.vy

  if love.keyboard.isDown("lshift") then
    player.engineBoost = true
    player.speed = player.speedBoost
  end
  player.speed = math.max(0.001, player.speed - dt)

  if player.x >= screenWidth - (player.w/2) then                              -- Collision avec le mur de droite
     player.x = screenWidth - (player.w/2)
  end
  if player.y < 0 + (player.h/2) then                                         -- Collision avec le mur du haut
     player.y = 0 + (player.h/2)
  end
  if player.x < 0 + (player.w/2) then                                         -- Collision avec le mur de gauche
     player.x = 0 + (player.w/2)
  end
  if player.y >= screenHeight - (player.h/2) then                             -- Collision avec le mur du bas
     player.y = screenHeight - (player.h/2)
  end

  if asteroid.x > screenWidth and asteroid.y > screenWidth then
     asteroid.x = 0
  end
  if asteroid.x < 0 then
     asteroid.x = screenWidth
  end
  if asteroid.y > screenHeight then
     asteroid.y = 0
  end
  if asteroid.y < 0 then
     asteroid.y = screenHeight
  end

  asteroid.x = asteroid.x + asteroid.vx
  asteroid.y = asteroid.y + asteroid.vy
end

-----------------------------------------------------------------------------
------------------DRAW---DRAW---DRAW-----------------------------------------
-----------------------------------------------------------------------------

function love.draw()

  love.graphics.draw(mainFont, 0, 0, 0, 1, 1)

  local n
  for n=1, #sprites do
    local s = sprites[n]
    love.graphics.draw(s.image, s.x, s.y, math.rad(s.angle), 1, 1, (s.w/2), (s.h/2))
  end


  for i, asteroid in ipairs(asteroids) do
    love.graphics.draw(asteroid.image, asteroid.x, asteroid.y, math.rad(asteroid.angle), 1.5, 1.5)
  end

    if player.engineOn == true then
      love.graphics.draw(player.engine, player.x, player.y, math.rad(player.angle), 1, 1, player.engine:getWidth()/2, player.engine:getHeight()/2)
    end

    love.graphics.print("Vitesse :  "..tostring(player.speed), 100, 100)
    love.graphics.print("vx : "..tostring(asteroid.vx), 100, 120)
    love.graphics.print("CreateSpriteAsteroid : "..tostring(#asteroids), 100, 140)
    love.graphics.print("Asteroid.x : "..tostring(asteroid.x), 100, 160)
    love.graphics.print("Asteroid.y : "..tostring(asteroid.y), 100, 180)


end