class_name Player extends CharacterBody2D

@onready var right_target: Marker2D = $RightTarget
@onready var left_target: Marker2D = $LeftTarget
@onready var player_graphic: AnimatedSprite2D = $PlayerGraphic


const SPEED = 300.0
const JUMP_VELOCITY = -400.0
const BUMP_POWER=50
enum FaceDirection{LEFT, RIGHT}
var direction
var facing:FaceDirection =FaceDirection.RIGHT
enum PlayerState{IDLE,RUNNING, JUMPING,FALLING}
var current_player_state:PlayerState=PlayerState.IDLE
var jumpUP:bool=false

func _physics_process(delta: float) -> void:
	handle_input()
	handle_movement(delta)
	handle_state()
	handle_animation()
	move_and_slide()
	handle_collision()


	# Get the input direction and handle the movement/deceleration.
	# As good practice, you should replace UI actions with custom gameplay actions.

func handle_input() -> void:
	direction = Input.get_axis("ui_left", "ui_right")
	if direction <0:
		player_graphic.flip_h=true
	if direction > 0:
		player_graphic.flip_h=false
	
	# handle jump
	if Input.is_action_just_pressed("ui_accept") and is_on_floor():
		velocity.y = JUMP_VELOCITY
		current_player_state =PlayerState.JUMPING
		jumpUP=true
		
	# handle shoot 
	if Input.is_action_just_pressed("shoot"):
		print("Player1 wants to shoot")
		match facing:
			FaceDirection.RIGHT:
				print("shoot to the right")
				%SceneManager.makebullet(right_target.global_transform,700)
				
			FaceDirection.LEFT:
				print("shoot to the left")
				%SceneManager.makebullet(left_target.global_transform,-700)
				
func handle_movement(delta) -> void:
	# Add the gravity.   
	if not is_on_floor():
		velocity += get_gravity() * delta
	
	if direction:
		velocity.x = direction * SPEED
		if direction <0:
			facing =FaceDirection.LEFT
		if direction >0:
			facing =FaceDirection.RIGHT
	else:
		velocity.x = move_toward(velocity.x, 0, SPEED)
	
func handle_state() -> void:
	match current_player_state:
		PlayerState.IDLE when velocity.x !=0:
			# change to running
			current_player_state=PlayerState.RUNNING
		PlayerState.RUNNING when velocity.x ==0:
			current_player_state=PlayerState.IDLE
		PlayerState.JUMPING when velocity.y==0:
			current_player_state=PlayerState.FALLING
		PlayerState.FALLING when is_on_floor():
			if velocity.x ==0:
				current_player_state=PlayerState.IDLE
			else:
				current_player_state=PlayerState.RUNNING
	
func handle_animation() -> void:
	match current_player_state:
		PlayerState.IDLE:
			player_graphic.play("idle")
		PlayerState.RUNNING:
			player_graphic.play("running")
		PlayerState.JUMPING:
			if jumpUP:
				player_graphic.play("jumping")
		PlayerState.FALLING:
			player_graphic.play("falling")

func handle_collision() ->void:
	for i in get_slide_collision_count():
		var c =get_slide_collision(i)
		if c.get_collider() is RigidBody2D:
			c.get_collider().apply_central_impulse(-c.get_normal()*BUMP_POWER)
		if c.get_collider() is NPCCharacter:
			var myCharacter:NPCCharacter = c.get_collider()
			var direction = -c.get_normal()*BUMP_POWER
			myCharacter.knockBack(direction)
			
	
	
func _on_animation_finished() -> void:
	match current_player_state:
		PlayerState.JUMPING:
			jumpUP =false