# How to make fake Collision in Platform 2D?

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Asked By Marline

I tried to make a fake collision in my game but it didn’t work…so after adding gravity in Sprite…it has fallen and stayed at bottom of the platform but instead of being at the bottom of the platform screen…it goes beyond it.so I tried to find out where is the issue. So if anyone can help me to find out my problem…Down below is my code.

``````extends Node2D
onready var animated_sprite = \$AnimatedSprite

var velocity = Vector2.ZERO
var max_run = 100
var run_accel = 800
var gravity = 1000
var max_fall = 160

func _process(delta):

var direction = sign(Input.get_action_strength("ui_right") - Input.get_action_strength("ui_left"))

if direction > 0 :
animated_sprite.flip_h = false
elif direction < 0:
animated_sprite.flip_h = true

if direction != 0:
animated_sprite.play("Run")
else:
animated_sprite.play("Idle")

velocity.x = move_toward(velocity.x, max_run * direction, run_accel * delta)
velocity.y = move_toward(velocity.y, max_fall, gravity * delta)
global_position.x += (velocity.x * delta)
global_position.y += (velocity.y  * delta)

if global_position.y >= 160:
global_position.y = 160
``````
Reply From: TimiT

## Solution:

You should use `Sprite` inside `KinematicBody2D` because it has method `move_and_slide` to check collisions automaticully.

## Cause:

`move_and_slide` checks all collisions and builds new movement vector using this data
`move_toward` only changes position and do not collide

## Example:

``````extends KinematicBody2D

var move= Vector2(0, 0);
const UP= Vector2(0, 1); # it may be important if you want to use is_on_floor() method

func _physics_process(delta):
move.y += 20;
move = move_and_slide(move * delta, UP); # it returns Vector2 which show you how character moved
``````

## P.S.

Also you can use `move_and_collide`, but you must to process all collisions it manually

Don’t forget to set `CollisionShape2D` as child node for platforms and your `KinematikBody2D`

It may helps:

Thank you!! for your Answer…

Marline | 2021-06-21 16:12