class_name Player extends CharacterBody2D


const SPEED = 300.0
const JUMP_VELOCITY = -400.0
@onready var right_spawn: Marker2D = $RightSpawn
@onready var left_spawn: Marker2D = $LeftSpawn
@onready var player_graphic: AnimatedSprite2D = $PlayerGraphic

var direction
enum FaceDirection{LEFT,RIGHT}
var facing:FaceDirection = FaceDirection.RIGHT
enum PlayerState{IDLE,RUNNING,JUMPING,FALLING}
var current_player_state:PlayerState = PlayerState.IDLE
var upjump:bool = false


func _physics_process(delta: float) -> void:
	handle_input()
	
	handle_state()
	handle_animation()
	
	# Add the gravity.
	if not is_on_floor():
		velocity += get_gravity() * delta



	# Get the input direction and handle the movement/deceleration.
	# As good practice, you should replace UI actions with custom gameplay actions.
	
	if direction:
		velocity.x = direction * SPEED
	else:
		velocity.x = move_toward(velocity.x, 0, SPEED)

	move_and_slide()
	for i in get_slide_collision_count():
		var c = get_slide_collision(i)
		if c.get_collider() is RigidBody2D:
			#deliver the impact
			c.get_collider().apply_central_impulse(-c.get_normal() * 100)
func handle_input()->void:
	if Input.is_action_just_pressed("Chuck"):
		print("chuck a grenade")
		%SceneManager.makeGrenade(right_spawn.global_transform, 1)
	
	if Input.is_action_just_pressed("jump") and is_on_floor():
		velocity.y = JUMP_VELOCITY
		upjump = true
		current_player_state = PlayerState.JUMPING

	# Get the input direction and handle the movement/deceleration.
	# As good practice, you should replace UI actions with custom gameplay actions.
	direction = Input.get_axis("left", "right")
	if direction<0:
		facing = FaceDirection.LEFT
		player_graphic.flip_h = true
	if direction>0:
		facing = FaceDirection.RIGHT
		player_graphic.flip_h = false

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("run")
		PlayerState.JUMPING:
			if upjump:
				player_graphic.play("jump")
		PlayerState.FALLING:
			player_graphic.play("fall")
	


func _on_animation_finished() -> void:
	match current_player_state:
		PlayerState.JUMPING:
			upjump = false