tenchu/Godot/Code/Character.gd

extends CharacterBody2D

var gravity = 900
var gravity_mid = 500
var gravity_fall = 1300
const SPEED = 200.0
const JUMP_VELOCITY = -300.0
const roll_speed = 300
var roll_cooldown_time = 0.5
var colshape_stand = 30

@onready var sprite = $Sprites

var land_time = 0
var roll_cooldown = 0
var roll_time = 0
var roll_dir = 1
var side = 1
var state = State.Idle
var double_jump = false

enum State {
	Idle,
	Run,
	Walk,
	Jump,
	AirSpin,
	Land,
	Attack,
	Roll,
	OnWall,
}

enum RState {
	Grounded,
	Aerial,
	Combat,
	Climbing
}

# A state machine might be needed here because this is getting really messy?
# There are 4 major states; grounded, combat, aerial, climbing
var rstate = RState.Aerial

func grounded(delta):
	if land_time >= 0:
		land_time -= delta
	if roll_cooldown >= 0:
		roll_cooldown -= delta
	if roll_time >= 0:
		roll_time -= delta
	elif state == State.Roll:
		$CollisionShape2D.shape.size.y = colshape_stand
		$CollisionShape2D.position.y = colshape_stand / -2
		roll_cooldown = roll_cooldown_time
		# state = State.Idle

	if Input.is_action_just_pressed("attack"):
		rstate = RState.Combat
		return
	
	if Input.is_action_just_pressed("roll"):
		if is_on_floor() and roll_time <= 0 and roll_cooldown <= 0:
			# state = State.Roll
			roll_time = 0.55
			roll_dir = -1 if sprite.flip_h else 1
			$CollisionShape2D.shape.size.y = colshape_stand / 2
			$CollisionShape2D.position.y = colshape_stand / -4
			sprite.play("GroundRoll")
			return
	if Input.is_action_just_pressed("ui_accept") and state != State.Roll:
		velocity.y = JUMP_VELOCITY
		sprite.play("Jump")
		rstate = RState.Aerial
		sprite.pause()
		sprite.set_frame_and_progress(0, 0)
		return

	# We ran off of a ledge
	if not is_on_floor():
		rstate = RState.Aerial
		return

	if state == State.Roll:
		velocity.x = roll_dir * roll_speed
	else:
		var speed = SPEED
		if Input.is_key_pressed(KEY_SHIFT):
			speed /= 3
		var direction = Input.get_axis("left", "right")

		if direction:
			velocity.x = direction * speed
		else:
			# Decelerate
			velocity.x = move_toward(velocity.x, 0, 25)

		if direction != 0:
			sprite.flip_h = direction == -1


	if land_time <= 0:
		if velocity.x != 0:
			if Input.is_key_pressed(KEY_SHIFT):
				sprite.play("Walk")
			else:
				sprite.play("Run")
		else:
			sprite.play("Idle")

func aerial(delta):
	if is_on_floor():
		# Transition to grounded
		double_jump = false
		rstate = RState.Grounded
		sprite.play("Land")
		land_time = 0.16
		return
		
	if is_on_wall():
		rstate = RState.Climbing
		return

	# if Input.is_action_just_pressed("ui_accept") and state != State.AirSpin:
	if Input.is_action_just_pressed("ui_accept") and not double_jump:
		sprite.play("AirSpin")
		double_jump = true
		# state = State.AirSpin
		var boost = 0 if velocity.y > 0 else velocity.y / 3
		velocity.y = JUMP_VELOCITY / 1.4 + boost

	if velocity.y > 50:
		velocity.y += gravity_fall * delta
	elif velocity.y < -50:
		velocity.y += gravity * delta
	else:
		velocity.y += gravity_mid * delta

	var direction = Input.get_axis("left", "right")
	if direction:
		velocity.x = direction * SPEED * 0.9
	elif double_jump:
		# Decelerate
		velocity.x = move_toward(velocity.x, 0, 3)
	else:
		velocity.x = move_toward(velocity.x, 0, 9)

	if direction != 0:
		sprite.flip_h = direction == -1

	if not double_jump:
		if velocity.y > 50:
			sprite.set_frame_and_progress(2,0)
		elif velocity.y > -150:
			sprite.set_frame_and_progress(1, 0)


func combat(delta):
	# state = State.Attack
	velocity = Vector2.ZERO
	sprite.play("Attack1")
	await (sprite as AnimatedSprite2D).animation_finished
	# state = State.Idle
	rstate = RState.Grounded

func climbing(delta):
	if Input.is_action_just_pressed("ui_accept"):
		rstate = RState.Aerial
		velocity.x = -150
		velocity.y = -350
		return
	velocity.x = 0
	velocity.y = 0

func _physics_process(delta):
	match rstate:
		RState.Grounded:
			grounded(delta)
		RState.Aerial:
			aerial(delta)
		RState.Combat:
			combat(delta)
		RState.Climbing:
			climbing(delta)

	# if (state == State.Jump or state == State.AirSpin) and is_on_wall():
	# 	state = State.OnWall
	# 	return

	move_and_slide()

# Maybe later
enum JumpState {
}