extends Node

var input_states = preload('res://scr/input_states.gd')
onready var body = get_node('body')

#Variables
var speed_x = 700
var speed_y = 0
var move_direction = 0
const JUMP_FORCE = 700
const GRAVITY = 2500
const MAX_FALL_SPEED = 700
var jump_count = 0
onready var starting_scale = body.get_scale()

#States
var ORIENTATION_PREV = ''
var ORIENTATION = 'right'
var GROUNDSTATE_PREV = ''
var GROUNDSTATE = 'air'

#Inputs
onready var btn_right = input_states.new('ui_right')
onready var btn_left = input_states.new('ui_left')
onready var btn_jump = input_states.new('ui_up')

#States
var FROZEN = false

func _ready():
	set_fixed_process(true)
	#Debug
	while true:
		yield(utils.create_timer(.1), 'timeout')
		print(jump_count)

func _fixed_process(delta):
	if !FROZEN:
		#States
		ORIENTATION_PREV = ORIENTATION
		GROUNDSTATE_PREV = GROUNDSTATE


		#Gravity
		calculate_gravity(delta)

		#Jump reset
		if GROUNDSTATE == 'ground':
			jump_count = 0


		#Controls
		if btn_right.check() == 2:
			move_direction = 1
			ORIENTATION = 'right'
		elif btn_left.check() == 2:
			move_direction = -1
			ORIENTATION = 'left'
		else:
			move_direction = 0
		if btn_jump.check() == 1 and jump_count < 2:
			speed_y = -JUMP_FORCE
			jump_count += 1
			if GROUNDSTATE == 'air':
				jump_count += 1




		#Animations
		if ORIENTATION != ORIENTATION_PREV:
			flip()


		#Moving the body
		var movement = body.move(calculate_velocity(delta))
		#Sliding
		check_slide_and_groundstate(movement)

func calculate_gravity(delta):
	speed_y += GRAVITY*delta
	if speed_y > MAX_FALL_SPEED:
		speed_y = MAX_FALL_SPEED

func check_slide_and_groundstate(movement):
	if body.is_colliding():
		var normal = body.get_collision_normal()
		speed_y = normal.slide(Vector2(0, speed_y)).y
		body.move(normal.slide(movement))
		if normal == Vector2(0, -1):
			GROUNDSTATE = 'ground'
		else:
			GROUNDSTATE = 'air'
	else:
		GROUNDSTATE = 'air'

func calculate_velocity(delta):
	return Vector2(speed_x*delta*move_direction, speed_y*delta)

func flip():
	if ORIENTATION == 'right':
		body.set_scale(starting_scale)
	else:
		body.set_scale(Vector2(-starting_scale.x, starting_scale.y))