extends CharacterBody3D

class_name Player

enum PlayerStates {
	STANDING,
	CROUCHING,
	SPRINTING
}

static var Instance: Player;

@onready var animationtree: AnimationTree = $CollisionShape3D/Camera3D/Weapon/AnimationPlayer/AnimationTree
@onready var collisionShape: CollisionShape3D = $CollisionShape3D

const SPEED: float         = 5.0
const SPRINT_SPEED: float  = 10.0
const FALLOFF_SPEED: float = 0.5
const JUMP_VELOCITY: float = 4.5

var lastDirection = Vector2(0,0)
@export var PlayerState: PlayerStates = PlayerStates.STANDING

# Get the gravity from the project settings to be synced with RigidBody nodes.
var gravity: float = ProjectSettings.get_setting("physics/3d/default_gravity")

func _ready() -> void:
	Instance = self

func _physics_process(delta: float) -> void:
	# Add the gravity.
	if not is_on_floor():
		velocity.y -= gravity * delta

	# Handle Jump.
	if Input.is_action_just_pressed("player_jump") and is_on_floor():
		velocity.y = JUMP_VELOCITY

	# Get the input direction and handle the movement/deceleration.
	# As good practice, you should replace UI actions with custom gameplay actions.
	var input_dir := Input.get_vector("player_right", "player_left", "player_down", "player_up")
	var direction := (transform.basis * Vector3(input_dir.x, 0, input_dir.y)).normalized()
	var falloffSpeed = FALLOFF_SPEED
	
	if not is_on_floor():
		falloffSpeed = 0.02;
	
	var speed = SPEED;
	self.handleCrouching()
	if PlayerState == PlayerStates.STANDING && Input.is_action_pressed('player_sprint'):
		self.PlayerState = PlayerStates.SPRINTING
	if PlayerState == PlayerStates.SPRINTING && Input.is_action_just_released('player_sprint'):
		self.PlayerState = PlayerStates.STANDING
	
	if PlayerState == PlayerStates.SPRINTING:
		speed = SPRINT_SPEED
	
	if direction:
		velocity.x = direction.x * speed
		velocity.z = direction.z * speed
	else:
		velocity.x = move_toward(velocity.x, 0, falloffSpeed)
		velocity.z = move_toward(velocity.z, 0, falloffSpeed)

	move_and_slide()
	
	if self.PlayerState == PlayerStates.SPRINTING:
		input_dir.y *= 2
	
	var blendProperty = 'parameters/Movement/blend_position'
	if PlayerState == PlayerStates.CROUCHING:
		blendProperty = 'parameters/Crouched Movement/blend_position'
	
	lastDirection.x = move_toward(lastDirection.x, input_dir.x, 0.05);
	lastDirection.y = move_toward(lastDirection.y, input_dir.y, 0.05);
	animationtree.set(blendProperty, lastDirection);

func handleCrouching():
	if Input.is_action_just_pressed('player_crouching'):
		self.PlayerState = PlayerStates.CROUCHING
		(collisionShape.shape as CylinderShape3D).height = 1
		self.animationtree['parameters/playback'].travel('Crouched Movement')
	if Input.is_action_just_released('player_crouching'):
		self.PlayerState = PlayerStates.STANDING
		(collisionShape.shape as CylinderShape3D).height = 2
		self.animationtree['parameters/playback'].travel('Movement')