can someone help me with this code for my platformer. ive been working on the script for an eternity but unity keeps saying there is an error [closed]

Question

using UnityEngine;
using System.Collections;

public class player_controler : MonoBehaviour {

    public float moveSpeed;
    public float jumpHeight;

    // Use this for initialization
    void Start () {
    }

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

        if(Input.GetKeyDown) (KeyCode.Space)) 
        {
            rigidbody2d.velocity = new vector2(0,jumpHeight;)
        }

    }
}

This is what shows up:

Assets/scripts/player_controler.cs(16,53): error CS0201: Only assignment, call, increment, decrement, and new object expressions can be used as a statement

Answer 1

Replace

    if(Input.GetKeyDown) (KeyCode.Space)) 
    {
        rigidbody2d.velocity = new vector2(0,jumpHeight;)
    }

with

    if(Input.GetKeyDown(KeyCode.Space)) 
    {
        rigidbody2d.velocity = new vector2(0,jumpHeight);
    }

It seems like you are missing some of the most basic concepts of C# syntax. Doing some basic C# tutorials (not necessarily Unity-specific) might help you to get a better feel for how the language is structured.

Answer 2

Is the semicolon after "jumpheight" just a typo, or is that really the problem. More information needed otherwise.

Answer 3

First, @peethor is correct in the comments. Your semi-colon is in the incorrect spot. (Should be at the end of the line. Also, your if statement syntax is incorrect.

Second, you need to get the component of the RigidBody2D before trying to set the velocity. (Make sure that the component exists on the same gameobject that this script is on. If not, you'll have to find the gameobject before getting the component.)

    public float moveSpeed;
    public float jumpHeight;
    private RigidBody2D rb;     
    // Use this for initialization
    void Start () {
        rb = GetComponent<Rigidbody2D>(); //Store a reference to it since you'll access it every update.
    }

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

        if (Input.GetKeyDown(KeyCode.Space))
        {
            rb.velocity = new vector2(0,jumpHeight);
        }
    }