2.Add the 3d assets + first few lines of code

1. If you want, drag a different material from Course Library > Materials onto the Ground object
2. Drag 1 Human, 3 Animals, and 1 Food object into the Hierarchy
3. Rename the character “Player”, then reposition the animals and food so you can see them
4. Adjust the XYZ scale of the food so you can easily see it from above

Attach the script to the Player and open it

In your Assets folder, create a “Scripts” folder, and a “PlayerController” script inside

At the top of PlayerController.cs, declare a new

[SerializeField]

private float horizontalInput

In Update(), set horizontalInput = Input.GetAxis(“Horizontal”), then test to make sure it works in the inspector

using UnityEngine;

public class Movement : MonoBehaviour
{
    [SerializeField]
    private float horizontalInput;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        horizontalInput = Input.GetAxis("Horizontal");
    }
}

4.Move the player left-to-right

here we can get our input with this basic code, we use [SerializeField] for sanitization and allow us to see the value in the inspection panel to make sure we didn't fck up lol Declare a new public float speed = 10.0f; here's my code


using UnityEngine;

public class Movement : MonoBehaviour
{
    [SerializeField]
    private float horizontalInput;
    [SerializeField]
    private float speed = 30.0f;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        horizontalInput = Input.GetAxis("Horizontal");
        transform.Translate(Vector3.right * horizontalInput * Time.deltaTime * speed);
    }
}

5+6. Keep the player inbounds

In Update(), write an if-statement checking if the player’s left X position is less than a certain value

In the if-statement, set the player’s position to its current position, but with a fixed X location

Repeat this process for the right side of the screen

Declare new xRange variable, then replace the hardcoded values with them

Add comments to your code or not lol


using UnityEngine;

public class Movement : MonoBehaviour
{
    [SerializeField]
    private float horizontalInput;
    [SerializeField]
    private float speed = 10.0f;
    [SerializeField]
    private float xRange = 20.0f;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        if (transform.position.x < -xRange)
        {
            transform.position = new Vector3(-xRange, transform.position.y , transform.position.z);
        }
        if (transform.position.x > xRange)
        {
            transform.position = new Vector3(xRange, transform.position.y, transform.position.z);
        }
        horizontalInput = Input.GetAxis("Horizontal");
        transform.Translate(Vector3.right * horizontalInput * Time.deltaTime * speed);
    }
}

New Functionality

The player can move left and right based on the user’s left and right key presses

The player will not be able to leave the play area on either side
New Concepts & Skills
Adjust object scale
If-statements
Greater/Less than operators
Next Lesson, We’ll learn how to create and throw endless amounts of food to feed our animals!

now use chat gpt to teach me thing and fix a bug that can occur when you move fast

float clampedX = Mathf.Clamp(desiredpoz.x, -Xrange, Xrange) become the min/max

using UnityEngine;
//needed a bit of editing coz cgpt3.5 is stoooooooopid
public class Movement : MonoBehaviour
{
    [SerializeField]
    private float speed = 10.0f;
    [SerializeField]
    private float xRange = 10.0f;
    [SerializeField]
    private float horizontalInput;
    // Start is called before the first frame update
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {
        horizontalInput = Input.GetAxis("Horizontal");

        // Calculate the desired position based on the input
        Vector3 desiredPosition = transform.position + Vector3.right * -horizontalInput * Time.deltaTime * speed;

        // Clamp the desired position within the x range
        float clampedX = Mathf.Clamp(desiredPosition.x, -xRange, xRange);
        desiredPosition = new Vector3(clampedX, desiredPosition.y, desiredPosition.z);
        // Move the object to the clamped position
        transform.position = desiredPosition;
    }
}