local cwd   = (...):gsub('%.baseworld$', '') .. "."

local BaseWorld = Object:extend()

local Sti   = require(cwd .. "libs.sti")

-- INIT FUNCTIONS
-- All functions to init the world and the map

function BaseWorld:new(scene, actorlist, mapfile)
  self.scene = scene

  self:initPlayers()
  self:setActorList(actorlist)
  self:setMap(mapfile)
  self.actors = {}
end

function BaseWorld:setActorList(actorlist)
  if actorlist == nil then
    error("FATAL: You must set an actorlist to your world")
  else
    self.obj = require(actorlist)
  end
end

function BaseWorld:setMap(mapfile)
  if mapfile == nil then
    self.haveMap = false
    self.haveBackgroundColor = false
    self.backcolor = {128, 128, 128}
  else
    self.haveMap = true
    self.map        = Sti(mapfile)
    self.haveBackgroundColor = true
    self.backcolor  = self.map.backgroundcolor or {128, 128, 128}
  end
end

-- ACTOR MANAGEMENT FUNCTIONS
-- Basic function to handle actors

function BaseWorld:newActor(name, x, y)
  self.obj.index[name](self, x, y)
end

function BaseWorld:registerActor(actor)
  table.insert(self.actors, actor)
end

function BaseWorld:removeActor(actor)
  for i,v in ipairs(self.actors) do
    if v == actor then
      table.remove(self.actors, i)
    end
  end
end

function BaseWorld:moveActor(actor, x, y, filter)
  self.actors[actor].x = x
  self.actors[actor].y = y
  -- as the baseworld have no collision function, we return empty collision
  -- datas, but from the same type than bump2D will return
  return x, y, {}, 0
end

function BaseWorld:queryRect(x, y, w, h)
  local query = {}
  local x2, y2 = x + w, y + h
  for i,v in ipairs(self.actors) do
    if (v.x >= x) and (v.x + v.w >= x1) and
       (v.y >= y) and (v.y + v.h >= y1) then

      table.insert(query, v)
    end
  end

  return v
end

function BaseWorld:countActors()
  return #self.actors
end

function BaseWorld:getActors()
  return self.actors
end

-- PLAYER MANAGEMENT FUNCTIONS
-- Basic function to handle player actors

function BaseWorld:initPlayers()
  self.players = {}
end

function BaseWorld:addPlayer(actor, sourceid)
  local player = {}
  player.actor    = actor
  player.sourceid = sourceid or 1

  table.insert(self.players, player)
end

function BaseWorld:sendInputToPlayers(actor)
  for i,v in ipairs(self.players) do
    --TODO: make the player get from a selected source inputs
    v.actor:getInput(self.scene.keys)
  end
end

function BaseWorld:removePlayer(actor)
  for i,v in ipairs(self.players) do
    if (v.actor == actor) then
      table.remove(self.players, i)
    end
  end
end

-- MAP FUNCTIONS
-- All map wrappers

function BaseWorld:getDimensions()
  if self.haveMap then
    return  self.map.width  * self.map.tilewidth,
            self.map.height * self.map.tileheight
  else
    return core.screen:getDimensions()
  end
end

function BaseWorld:setBackgroundColor(r, g, b)
  self.backcolor = {r, g, b}
  self.haveBackgroundColor = true
end

function BaseWorld:removeBackgroundColor()
  self.haveBackgroundColor = false
end

function BaseWorld:getBackgroundColor()
  return self.backcolor[1]/256, self.backcolor[2]/256, self.backcolor[3]/256
end

-- UPDATE FUNCTIONS
-- All update functions

function BaseWorld:update(dt)
  self:updateMap(dt)
  self:sendInputToPlayers(dt)
  self:updateActors(dt)
end

function BaseWorld:updateActors(dt)
  for i,v in ipairs(self.actors) do
    v:update(dt)
  end
end

function BaseWorld:updateMap(dt)
  if self.haveMap then
    self.map:update(dt)
  end
end


-- DRAW FUNCTIONS
-- All function to draw the map, world and actors

function BaseWorld:draw(dt)
  self:drawBackgroundColor()
  self:drawMap()
  self:drawActors()
end

function BaseWorld:drawActors()
  for i,v in ipairs(self.actors) do
    v:draw()
  end
end

function BaseWorld:drawMap()
  if self.haveMap then
    self.map:draw()
  end
end

function BaseWorld:drawBackgroundColor()
  if self.haveBackgroundColor then
    local r, g, b = self.backcolor[1], self.backcolor[2], self.backcolor[3]
    love.graphics.setColor(r/256, g/256, b/256)
    love.graphics.rectangle("fill", 0, 0, 480, 272)
    utils.graphics.resetColor()
  end
end

return BaseWorld