extends KinematicBody

# stats
var curHp : int = 10
var maxHp : int = 10
var damage : int = 1
 
var gold : int = 0
 
var attackRate : float = 0.3
var lastAttackTime : int = 0
 
# physics
var walkSpeed : float = 5.0
var runSpeed : float = 10.0
var jumpForce : float = 10.0
var gravity : float = 15.0
 
var vel := Vector3()
 
# components
onready var camera = get_node("CameraOrbit")
onready var attackCast = get_node("AttackRayCast")
onready var anim = get_node("Casual2_Female/AnimationPlayer")
export var ui_path : NodePath
onready var ui = get_node(ui_path)

# called when the node is initialized
func _ready ():
	# initialize the UI
	ui.update_health_bar(curHp, maxHp)
	ui.update_gold_text(gold)

func _process(delta):
	# attack input
	if is_on_floor() and Input.is_action_just_pressed("attack"):
		try_attack()

# called every physics step (60 times a second)
func _physics_process (delta):
	vel.x = 0
	vel.z = 0
 
	var input := Vector3()
	
	# movement inputs
	if Input.is_action_pressed("move_forward"):
		input.z += 1
	if Input.is_action_pressed("move_backward"):
		input.z -= 1
	if Input.is_action_pressed("move_left"):
		input.x += 1
	if Input.is_action_pressed("move_right"):
		input.x -= 1
		
	input = input.normalized()
	
	# get the relative direction
	var dir := (transform.basis.z * input.z + transform.basis.x * input.x)
	
	# apply the direction to our velocity
	if Input.is_action_pressed("run"):
		vel.x = dir.x * runSpeed
		vel.z = dir.z * runSpeed
	else:
		vel.x = dir.x * walkSpeed
		vel.z = dir.z * walkSpeed
	
	# gravity
	vel.y -= gravity * delta
	
	# jump input
	if Input.is_action_pressed("jump") and is_on_floor():
		vel.y = jumpForce
	
	if is_on_floor():
		if anim.current_animation != "Punch":
			if input.x != 0 || input.z != 0:
				if Input.is_action_pressed("run"):
					anim.play("Run")
				else:
					anim.play("Walk")
			else:
				anim.play("Idle")
	else:
		anim.play("RecieveHit")
	
	# move along the current velocity
	vel = move_and_slide(vel, Vector3.UP, true, 4, deg2rad(89))

# called when we collect a coin
func give_gold (amount):
	gold += amount
	# update the UI
	ui.update_gold_text(gold)

# called when an enemy deals damage to us
func take_damage (damageToTake):

	curHp -= damageToTake
	# update the UI
	ui.update_health_bar(curHp, maxHp)
	
	# if our health is 0, die
	if curHp <= 0:
		die()

# called when our health reaches 0
func die ():
	# reload the scene
	get_tree().reload_current_scene()
	
# called when we press the attack button
func try_attack():
	# if we're not ready to attack, return
	if OS.get_ticks_msec() - lastAttackTime < attackRate * 1000:
		return
	
	# set the last attack time to now
	lastAttackTime = OS.get_ticks_msec()
	
	# play the animation
	anim.stop()
	anim.play("Punch")
	
	# is the ray cast colliding with an enemy?
	if attackCast.is_colliding():
		if attackCast.get_collider().has_method("take_damage"):
			attackCast.get_collider().take_damage(damage)