extends CharacterBody2D


const SPEED = 300.0
const JUMP_VELOCITY = -400.0

@onready var right_cast: RayCast2D = $RightCast
@onready var left_cast: RayCast2D = $LeftCast
@onready var right_spawn: Node2D = $RightSpawn
@onready var left_spawn: Node2D = $LeftSpawn
@onready var player_graphic: AnimatedSprite2D = $PlayerGraphic


enum FaceDirection{LEFT, RIGHT}
var facing:FaceDirection = FaceDirection.RIGHT

enum State{IDLE, RUN, JUMP, FALLING}
var current_state:State = State.IDLE

var pushTarget
var pushEnabled = false
var direction
var upJump = false

func _physics_process(delta: float) -> void:
	#game loop
	handle_input()
	#calculate the movement
	handle_movement(delta)
	#change states
	update_states()
	#play animations
	update_animation()
	#collision with objects, raycasts
	

	move_and_slide()
	handle_collisions()
	
func update_states():
	match current_state:
		#idle when movement in x
		State.IDLE when velocity.x !=0:
			current_state = State.RUN
		State.RUN:
			if velocity.x ==0:
				current_state = State.IDLE
		#jumping when reaching apex
		State.JUMP when velocity.y > 0:
			current_state = State.FALLING
		State.FALLING when is_on_floor():
			if velocity.x == 0:
				current_state = State.IDLE
			else:
				current_state = State.RUN
			
func update_animation():
	match current_state:
		State.IDLE:
			player_graphic.play("idle")
		State.RUN:
			player_graphic.play("run")
		State.JUMP:
			if upJump:
				player_graphic.play("jump")
		State.FALLING:
			player_graphic.play("falling")
func handle_movement(delta): 
	# Add the gravity.
	if not is_on_floor():
		velocity += get_gravity() * delta
	
	if direction:
		velocity.x = direction * SPEED
		if direction <0:
				facing = FaceDirection.LEFT
				player_graphic.flip_h = true
		if direction >0:
			facing = FaceDirection.RIGHT
			player_graphic.flip_h = false
	else:
		velocity.x = move_toward(velocity.x, 0, SPEED)
func handle_input():
	if Input.is_action_just_pressed("ui_accept") and is_on_floor():
		velocity.y = JUMP_VELOCITY
		current_state = State.JUMP
		upJump = true
		
	if Input.is_action_just_pressed("shove") && pushEnabled:
			print("shove pressed")
			if facing == FaceDirection.RIGHT:
				pushTarget.apply_central_impulse(Vector2(1,0)*700)
				pushEnabled = false
			if facing == FaceDirection.LEFT:
				pushTarget.apply_central_impulse(Vector2(-1,0)*700)
				pushEnabled = false
	
	if Input.is_action_just_pressed("shoot"):
			print("shoot a bullet")
			if facing == FaceDirection.RIGHT:
				%SceneManager.makeBullet(right_spawn.global_transform, 700)
			if facing == FaceDirection.LEFT:
				%SceneManager.makeBullet(left_spawn.global_transform, -700)

	# 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("ui_left", "ui_right")
func handle_collisions():
	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() * 100)
			
	if right_cast.is_colliding() && facing==FaceDirection.RIGHT:
			#get the thing I am colliding with
			var collider = right_cast.get_collider()
			if collider is Node && collider is RigidBody2D:
				print("I can shove this to the right")
				pushTarget = collider
				pushEnabled = true
	if not right_cast.is_colliding() && not left_cast.is_colliding():
		pushEnabled = false
	if left_cast.is_colliding() && facing==FaceDirection.LEFT:
			var collider = left_cast.get_collider()
			if collider is Node && collider is RigidBody2D:
					print("I can shove this to the left")
					pushTarget = collider
					pushEnabled = true
	if not left_cast.is_colliding() && not right_cast.is_colliding():
			pushEnabled = false


func _on_animation_finished() -> void:
	match current_state:
		State.JUMP:
			upJump = false