How To Move Player On Moving Platform Without Falling Off

Unity Engine
1

This is my player script…

using UnityEngine;
using System.Collections;

[RequireComponent (typeof (Controller2D))]
public class Player : MonoBehaviour {

public float jumpHeight = 4;
public float timeToJumpApex = .4f;
float accelerationTimeAirborne = .2f;
float accelerationTimeGrounded = .1f;
float moveSpeed = 8;

float gravity;
float jumpVelocity;
Vector3 velocity;
float velocityXSmoothing;

Controller2D controller;

void Start() {
controller = GetComponent ();

gravity = -(2 * jumpHeight) / Mathf.Pow (timeToJumpApex, 2);
jumpVelocity = Mathf.Abs(gravity) * timeToJumpApex;
print ("Gravity: " + gravity + " Jump Velocity: " + jumpVelocity);
}

void Update() {

if (controller.collisions.above || controller.collisions.below) {
velocity.y = 0;
}

Vector2 input = new Vector2 (Input.GetAxisRaw (“Horizontal”), Input.GetAxisRaw (“Vertical”));

if (Input.GetKeyDown (KeyCode.Space) && controller.collisions.below) {
velocity.y = jumpVelocity;
}

float targetVelocityX = input.x * moveSpeed;
velocity.x = Mathf.SmoothDamp (velocity.x, targetVelocityX, ref velocityXSmoothing, (controller.collisions.below)?accelerationTimeGrounded:accelerationTimeAirborne);
velocity.y += gravity * Time.deltaTime;
controller.Move (velocity * Time.deltaTime);

}
void OnCollisionEnter2D(Collider2D other)
{
if(other.transform.tag == “MovingPlatform”)
{
transform.parent = other.transform;
}
}

void OnCollisionExit2D(Collider2D other)
{
if(other.transform.tag == “MovingPlatform”)
{
transform.parent = null;
}
}
}

AND THIS IS MY PLATFORM SCRIPT…

using UnityEngine;
using System.Collections;

public class MovingPlatform : MonoBehaviour {

public GameObject platform;

public float moveSpeed;

private Transform currentPoint;

public Transform[ ] points;

public int pointSelection;

// Use this for initialization
void Start () {

currentPoint = points[pointSelection];
}

// Update is called once per frame
void Update () {

platform.transform.position = Vector3.MoveTowards(platform.transform.position, currentPoint.position, Time.deltaTime * moveSpeed);

if(platform.transform.position == currentPoint.position)
{
pointSelection++;

if(pointSelection == points.Length)
{
pointSelection = 0;
}

currentPoint = points[pointSelection];
}
}
}

PLEASE HELP ME?!?!?!?!?

2

Hi SenorDount7,

Can you please comment on whether the problem is: player is ?standing/stationary? on the moving platform, but cannot move, without falling through the moving platform? (At the time, when the moving platform is moving?)

Your “platform” should be a rigidbody, methinks. Also, there should collision of some sort between the two plaform/player objects.

Hopefully you can shed more light on your project’s settings. :slight_smile:

3

@jtok4j The player will collide with the platform but will not move with the platform

4

So, does the player fall through the platform floor, or simply falls off after the platform moves out of the way?

5

Well… Seems like you dont want to tell us anything about your gameplay and how your game functions, the easiest way i see is just to make it a child of that moving platform:

void OnCollisionEnter2D(Collision2D coll)
{
   if(coll.gameObject.tag == "YOUR TAG")
   {
       transform.parent = coll.transform;
   }
}

void OnCollisionExit2D(Collision2D coll)
{
       transform.parent = null;
}

P.S dont forget to use [“code”] tag before you write your script:smile: