local Object = require("object")
local Entity = require("entity")
local Map = require("map")
local helpers = require("helpers")

local GameState = Object:extend()

function GameState:init()
   GameState.__super.init(self)
   self.input = {
	  start=false,
	  right=false,
	  left=false,
	  up=false,
	  down=false,
	  jump=false,
   }
   self.ended = false
   self.next = nil
end

function GameState:updateInput(dt)
   self.input.start = love.keyboard.isDown("return")
   self.input.right = love.keyboard.isDown("d", "right")
   self.input.left = love.keyboard.isDown("a", "left")
   self.input.up = love.keyboard.isDown("w", "up")
   self.input.down = love.keyboard.isDown("down", "s")
   self.input.jump = love.keyboard.isDown("space")
end

function GameState:update(dt)
   self:updateInput(dt)
end

function GameState:draw()
end

local Play = GameState:extend()

function Play:init()
   Play.__super.init(self)
   self.map = Map:new("assets/map.lua")
   self.current_frame = 0
   self.physics = {
	  gravity=self.map.tileheight*9.8,	-- somewhat exagerated gravity (3x)
	  maxdx=self.map.tilewidth*8,		-- max horizontal speed
	  maxdy=self.map.tileheight*24,		-- max vertical speed
	  jump=self.map.tileheight*512,		-- instant jump impulse
   }
   self.physics.horizontal_acc = self.physics.maxdx*2	-- horizontal acceleration
   self.physics.friction = self.physics.maxdx*1.5	-- horizontal friction
   self.player_entity = Entity:new(180, 100, 4, 8, self.physics.gravity, 2*8, self.physics.horizontal_acc, self.physics.friction, self.map)
end

function Play:updatePlayer(dt)
   self.player_entity = self.player_entity:move(self.input, dt, self.current_frame)
end

function Play:updateCamera(dt)
end
function Play:updateItems(dt)
end
function Play:updateEnemies(dt)
end
function Play:updateChirps(dt)
end

function Play:update(dt)
   Play.__super.update(self, dt)
   self.current_frame = self.current_frame + 1
   self:updatePlayer(dt)
   self:updateCamera(dt)
   self:updateItems(dt)
   self:updateEnemies(dt)
   self:updateChirps(dt)
end

function Play:draw()
   love.graphics.setColor(0.2, 0.2, 0.2)
   self.map:draw()
   love.graphics.setColor(0, 0.8, 0.1)
   self.player_entity:draw()
end
local Title = GameState:extend()

function Title:update(dt)
   Title.__super.update(self, dt)
   if self.input.start then
	  print("PRESSED START ENDING THIS STATE")
	  self.ended = true
	  self.next = Play:new()
   end
end

function Title:draw()
   Title.__super.draw(self)
   local font = love.graphics.getFont()
   local height = font:getHeight()
   local width = font:getWidth("MICHI")
   love.graphics.setColor(1, 1, 1)
   love.graphics.print("MICHI", 320/2, 24, 0, 2, 2, width/2, height/2)
   width = font:getWidth("DRAGON")
   love.graphics.print("DRAGON", 320/2, 64, 0, 2, 2, width/2, height/2)
   width = font:getWidth("START")
   love.graphics.print("START", 320/2, 128, 0, 1, 1, width/2, height/2)
end
return {
 Play=Play,
 Title=Title,
}