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csharpusing UnityEngine;

public class PlayerMovement : MonoBehaviour
{
    // Physics parameters
    public float moveSpeed = 8f;
    public float jumpForce = 12f;
    
    // State variables
    private float horizontalInput;
    private bool isGrounded;

// Component references
    public Rigidbody2D rb;
    public Transform groundCheck;
    public LayerMask groundLayer;

void Update()
    {
        // Get left/right input (A/D or Arrow keys)
        horizontalInput = Input.GetAxisRaw("Horizontal");

// Check if player is touching the ground layer
        isGrounded = Physics2D.OverlapCircle(groundCheck.position, 0.2f, groundLayer);

// Jump trigger
        if (Input.GetButtonDown("Jump") && isGrounded)
        {
            rb.linearVelocity = new Vector2(rb.linearVelocity.x, jumpForce);
        }
    }

void FixedUpdate()
    {
        // Apply left/right velocity safely in physics step
        rb.linearVelocity = new Vector2(horizontalInput * moveSpeed, rb.linearVe

CSS