require 'const'
require 'util'

constr = require 'constructors'

require 'lib.audio'
assets = require 'lib.assets'
ease = require 'lib.ease'
bench = require 'lib.benchmark'
tick = require 'lib.tick'

scenes = {
  gameplay = require('scenes/gameplay/main')
}
local defaultscene = scenes.gameplay

scene = defaultscene

sprites = {}
sound_path = {}
music_path = {}
fonts = {}
cursors = {}

debug = false

function newAnimation(image, width, height)
  local animation = {}
  animation.spriteSheet = image;
  animation.quads = {};
  animation.width = width
  animation.height = height

  for y = 0, image:getHeight() - height, height do
    for x = 0, image:getWidth() - width, width do
      table.insert(animation.quads, love.graphics.newQuad(x, y, width, height, image:getDimensions()))
    end
  end

  return animation
end

function love.load()
  assets.clear()
  assets.load('assets')

  fonts.pix = love.graphics.newFont('assets/fonts/pix.ttf', 6)
  fonts.continuum = love.graphics.newFont('assets/fonts/cont.ttf', 14)
  fonts.default = love.graphics.newFont(12)

  if scene.load then scene.load() end

  cursors.default = love.mouse.newCursor('assets/sprites/cursor/pointer.png', sprites['cursor/pointer']:getWidth()/2, sprites['cursor/pointer']:getHeight()/2)
  cursors.hover = love.mouse.newCursor('assets/sprites/cursor/hand.png', sprites['cursor/hand']:getWidth()/2, sprites['cursor/hand']:getHeight()/2)
  cursors.drag = love.mouse.newCursor('assets/sprites/cursor/dragging.png', sprites['cursor/dragging']:getWidth()/2, sprites['cursor/dragging']:getHeight()/2)

  love.mouse.setCursor(cursors.default)
end

local cursor
function setCursor(mouse)
  cursor = mouse
end

frame = 0
function love.update(dt)
  cursor = nil
  frame = frame + 1
  bench.update()
  tick.update(dt)

  bench.startBenchmark('update')
  if scene.update then scene.update(dt) end
  bench.stopBenchmark('update')

  if cursor then
    love.mouse.setCursor(cursor)
  else
    love.mouse.setCursor(cursors.default)
  end
end

function love.draw()
  love.graphics.setFont(fonts.default)
  love.graphics.setColor(1, 1, 1)
  local sw, sh = love.graphics.getDimensions()
  bench.startBenchmark('render')

  if scene.draw then scene.draw() end

  love.graphics.setColor(1, 1, 1, 1)
  love.graphics.print('FPS: ' .. 1 / love.timer.getDelta(), 0, sh - 16)

  if debug then bench.renderBenchmark() end
  bench.stopBenchmark('render')
end

function love.mousepressed(x, y, b)
  if scene.mousepressed then scene.mousepressed(x, y, b) end
end

function love.mousereleased(x, y, b)
  if scene.mousereleased then scene.mousereleased(x, y, b) end
end

function love.keypressed(key)
  if key == 'f3' then
    debug = not debug
  end
end