practice/love/mike/lib/keys.lua

require "lib/GameState"

QUIT_KEY = "q"
SAVE_KEY = "s"
LOAD_KEY = "l"
HALF_SPEED = "lshift"
MOVE_RIGHT = "right"
MOVE_LEFT = "left"
SAVE_FILE = "testing.lua"

function love.keyreleased(key)

  -- save
  if key == SAVE_KEY then
		love.filesystem.write(SAVE_FILE, GameState.save(actors, "actors"))

  -- Load
  elseif key == LOAD_KEY then
		save_exists = love.filesystem.exists(SAVE_FILE)

    if save_exists then
			actors = GameState.load(SAVE_FILE)
			-- Tell the timer to ignore time passed between the save and the load
			actors.start = love.timer.getTime() - actors.end_timer
    end 
  end 
end

function half_speed(object_speed)
	if love.keyboard.isDown(HALF_SPEED) then
		return object_speed/2
	else return object_speed
	end
end

function check_keys(object, screen, dt) 
  local newObject = {}
  newObject.x = object.x
  newObject.y = object.y
  newObject.width = object.width
  newObject.height = object.height
  newObject.speed = object.speed
	
	if love.keyboard.isDown(QUIT_KEY) then
		 love.timer.sleep( 1 )
     gamestate.draw = Gamestates.title_draw
		 gamestate.update = Gamestates.title_update
	end
	
	if love.keyboard.isDown(MOVE_RIGHT)  then
    newObject.x = newObject.x + half_speed(newObject.speed * dt)
  end
	if love.keyboard.isDown(MOVE_LEFT) then
		newObject.x = newObject.x - half_speed(newObject.speed * dt)
	end
	if screen_col_detect(newObject, screen) then
		return newObject
	else
		return object
	end
  
end