How do I add grid-based movement to a isometric tilemap?

:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By Colonial345

This is what I have already, but I want to try doing grid-based movement. Any ideas how to do this? This tilemap is not going to change, so I was thinking of having an array that has the center coordinates of every block in the tilemap. Right now I don’t have any code for the tilemap, but I did add some sample code to the player.

extends KinematicBody2D

const SPEED = 10000
var motion = Vector2()

# Converts any Vector2 coordinates or motion from the cartesian to the isometric system
func cartesian_to_isometric(cartesian):
	return Vector2(cartesian.x - cartesian.y, (cartesian.x + cartesian.y) / 1.7)

# useful to convert mouse coordinates back to screen-space, and detect where the player wants to know.
# If we want to add mouse-based controls, we'll need this function
func isometric_to_cartesian(iso):
	var cart_pos = Vector2()
	cart_pos.x = (iso.x + iso.y * 2) / 2
	cart_pos.y = - iso.x + cart_pos.x
	return cart_pos

func _physics_process(delta):
	# Everything works like you're used to in a top-down game
	var direction = Vector2()

	if Input.is_action_pressed("ui_up"):
		direction += Vector2(0, -1)
	elif Input.is_action_pressed("ui_down"):
		direction += Vector2(0, 1)

	if Input.is_action_pressed("ui_left"):
		direction += Vector2(-1, 0)
	elif Input.is_action_pressed("ui_right"):
		direction += Vector2(1, 0)

	motion = direction.normalized() * SPEED * delta
	# Isometric movement is movement like you're used to, converted to the isometric system
	motion = cartesian_to_isometric(motion)

func _ready():
:bust_in_silhouette: Reply From: njamster

As you were apparently able to find this tutorial how did you manage to not find this one? :wink: It’s the direct sequel, also from GDQuest, with code on github.

Must of missed it. Thanks a ton!

Colonial345 | 2020-03-30 17:04

:bust_in_silhouette: Reply From: gabriel87

this work for me, the numbers depends of your grid size

extends KinematicBody2D
var inputs = {
“ui_right”: Vector2.RIGHT,
“ui_left”: Vector2.LEFT,
“ui_up”: Vector2.UP,
“ui_down”: Vector2.DOWN

func _unhandled_input(_event):
for dir in inputs.keys():
if Input.is_action_pressed(“ui_right”):
position.x += 8
position.y += 4
if Input.is_action_pressed(“ui_left”):
position.x -= 8
position.y -=4
if Input.is_action_pressed(“ui_up”):
position.x += 8
position.y -= 4
if Input.is_action_pressed(“ui_down”):
position.x -= 8
position.y +=4