KinematicBody2D collision with tilemap

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:bust_in_silhouette: Asked By WhiteRabbit

I’m creating a top down tile based game. I added tile base movement with the below code:

extends character

var initial = Vector2(96,96)
var motion = Vector2()
var target = Vector2(96,96)
var d = 0

export var _gold = 0
onready var sprite = get_node("AnimatedSprite")

func _physics_process(delta):
var _value  = d * speed

if  _value >= 1:
	_value = 1
	d = 0

self.position.x = lerp(initial.x,target.x,_value)
self.position.y = lerp(initial.y,target.y,_value)

if motion != Vector2():
	initial = self.position
	target = initial + motion
	motion = Vector2()

elif self.position == target:
	initial = self.position
	
	if Input.is_action_pressed("ui_up"):
		motion = Vector2(0,-1) * TileSize
	elif Input.is_action_pressed("ui_down"):
		motion = Vector2(0,1) * TileSize
	elif Input.is_action_pressed("ui_right"):
		motion = Vector2(1,0) * TileSize
	elif Input.is_action_pressed("ui_left"):
		motion = Vector2(-1,0) * TileSize
	
else:
	d += delta

I also have a tilemap for testing the game. However my character is not colliding with the cells but instead just continues to walk on top of the tile. My character is a KinematicBody2D is there a way to check if it will collide before the movement happens? I tried searching on google for hours but haven’t come up with anything yet.

is there a way to check if it will collide before the movement happens?

For that, you’re best bet is probably a RayCast2D (or RayCast depending on your needs)…

RayCast2D — Godot Engine (3.2) documentation in English

jgodfrey | 2020-02-17 17:41

I’m not entirely sure how you’re using _value and using lerp to move but this will cause the movement to possibly glitch through any smaller/thinner colliders like how using translate would. I’d recommend using move_and_slide or move_and_collide. Also the last argument in move_and_collide will return any potential collision information like what @jgodfrey was saying.

Magso | 2020-02-17 23:01