godot-demo-projects/2d/isometric/player/goblin.gd

extends CharacterBody2D

const MOTION_SPEED = 160 # Pixels/second.

var last_direction = Vector2(1, 0)

var anim_directions = {
	"idle": [ # list of [animation name, horizontal flip]
		["side_right_idle", false],
		["45front_right_idle", false],
		["front_idle", false],
		["45front_left_idle", false],
		["side_left_idle", false],
		["45back_left_idle", false],
		["back_idle", false],
		["45back_right_idle", false],
	],

	"walk": [
		["side_right_walk", false],
		["45front_right_walk", false],
		["front_walk", false],
		["45front_left_walk", false],
		["side_left_walk", false],
		["45back_left_walk", false],
		["back_walk", false],
		["45back_right_walk", false],
	],
}


func _physics_process(_delta):
	var motion = Vector2()
	motion.x = Input.get_action_strength("move_right") - Input.get_action_strength("move_left")
	motion.y = Input.get_action_strength("move_down") - Input.get_action_strength("move_up")
	motion.y /= 2
	motion = motion.normalized() * MOTION_SPEED
	#warning-ignore:return_value_discarded
	set_velocity(motion)
	move_and_slide()
	var dir = velocity

	if dir.length() > 0:
		last_direction = dir
		update_animation("walk")
	else:
		update_animation("idle")


func update_animation(anim_set):

	var angle = rad_to_deg(last_direction.angle()) + 22.5
	var slice_dir = floor(angle / 45)

	$Sprite2D.play(anim_directions[anim_set][slice_dir][0])
	$Sprite2D.flip_h = anim_directions[anim_set][slice_dir][1]