require "src.events"
require "src.ecs"
require "src.utils"
require "src.input"
require "src.textures"
require "src.phys"
require "src.sprite"
require "src.state_machine"
require "src.im"
require "src.room_editor"
require "src.export"
require "src.sound"
require "src.specks"
require "src.camera"

SCR_WIDTH = 320
SCR_HEIGHT = 180
GRAVITY = 1000
TERMINAL_VELOCITY = 900
WindowScale = 1

register_input("Left",  {{"key", "left"},  {"key", "a"}})
register_input("Right", {{"key", "right"}, {"key", "d"}})
register_input("Jump", {{"key", "space"}})
register_input("Dash", {{"key", "lshift"}})

register_input("Hot_Reload", {{"key", "r"}})

register_input("Right_Click", {{"mouse", 2}})
register_input("Left_Click",  {{"mouse", 1}})

li = love.image
la = love.audio
lg = love.graphics
lf = love.filesystem
lw = love.window
lk = love.keyboard
lm = love.mouse
lmath = love.math

function init_global_systems()
  event_bind(global_on_update, "Body", body_sys)
  event_bind(global_on_update, "State_Machine", state_update_sys)
  event_bind(global_on_update, "Sprite", sprite_anim_sys)
  event_bind(global_on_update, "Speck_System", speck_update_sys)
  event_bind(global_on_update, "Speck_Entity", speck_entity_system)
  event_bind(global_on_update, "Camera", camera_move_system)

  event_bind(global_on_draw, "Sprite", sprite_draw_sys)
  event_bind(global_on_draw, "Tilemap", tilemap_draw_sys)
  event_bind(global_on_draw, "Speck_System", speck_draw_sys)
end

function reload_assets()
  -- TODO:
    -- would be cool if it also made already loaded sprites and specks reload
    -- probably do some expensive thing to update, but strip it on build
  load_textures_from()
  load_sounds_from()
  load_specks_from()
  print("Assets loaded.")
end

local function load_dir(path)
  local files = lf.getDirectoryItems(path)

  for _, file in ipairs(files) do
    local filepath = path.."/"..file

    if lf.getInfo(filepath).type == "directory" then
      load_dir(filepath)
    else
      lf.load(filepath)();
    end
  end
end

function main_init()
  lg.setDefaultFilter("nearest", "nearest")
  viewport = lg.newCanvas(SCR_WIDTH, SCR_HEIGHT)

  reload_assets()

  load_dir("src/objs")
  load_dir("src/scenes")

  init_global_systems()
end