using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class PlayerMovement : MonoBehaviour
{	// this has jumping, movement, and the code for groundCheck. You must do // things yourself in the unity editor to for groundCheck. Code Tested // unity 2d platformer public float speed = 5f; public float jumpSpeed = 3f; private float direction = 0f; private Rigidbody2D player; public Transform groundCheck; public float groundCheckRadius; public LayerMask groundLayer; private bool isTouchingGround; // Start is called before the first frame update void Start() { player = GetComponent<Rigidbody2D>(); } // Update is called once per frame void Update() { isTouchingGround = Physics2D.OverlapCircle(groundCheck.position, groundCheckRadius, groundLayer); direction = Input.GetAxis("Horizontal"); if (direction > 0f) { player.velocity = new Vector2(direction * speed, player.velocity.y); } else if (direction < 0f) { player.velocity = new Vector2(direction * speed, player.velocity.y); } else { player.velocity = new Vector2(0, player.velocity.y); } if (Input.GetButtonDown("Jump") && isTouchingGround) { player.velocity = new Vector2(player.velocity.x, jumpSpeed); } }
}

using UnityEngine;
public class PlayerMovement : MonoBehaviour
{ private float horizontal; private float speed = 8f; private float jumpingPower = 16f; private bool isFacingRight = true; private bool isWallSliding; private float wallSlidingSpeed = 2f; private bool isWallJumping; private float wallJumpingDirection; private float wallJumpingTime = 0.2f; private float wallJumpingCounter; private float wallJumpingDuration = 0.4f; private Vector2 wallJumpingPower = new Vector2(8f, 16f); [SerializeField] private Rigidbody2D rb; [SerializeField] private Transform groundCheck; [SerializeField] private LayerMask groundLayer; [SerializeField] private Transform wallCheck; [SerializeField] private LayerMask wallLayer; private void Update() { horizontal = Input.GetAxisRaw("Horizontal"); if (Input.GetButtonDown("Jump") && IsGrounded()) { rb.velocity = new Vector2(rb.velocity.x, jumpingPower); } if (Input.GetButtonUp("Jump") && rb.velocity.y > 0f) { rb.velocity = new Vector2(rb.velocity.x, rb.velocity.y * 0.5f); } WallSlide(); WallJump(); if (!isWallJumping) { Flip(); } } private void FixedUpdate() { if (!isWallJumping) { rb.velocity = new Vector2(horizontal * speed, rb.velocity.y); } } private bool IsGrounded() { return Physics2D.OverlapCircle(groundCheck.position, 0.2f, groundLayer); } private bool IsWalled() { return Physics2D.OverlapCircle(wallCheck.position, 0.2f, wallLayer); } private void WallSlide() { if (IsWalled() && !IsGrounded() && horizontal != 0f) { isWallSliding = true; rb.velocity = new Vector2(rb.velocity.x, Mathf.Clamp(rb.velocity.y, -wallSlidingSpeed, float.MaxValue)); } else { isWallSliding = false; } } private void WallJump() { if (isWallSliding) { isWallJumping = false; wallJumpingDirection = -transform.localScale.x; wallJumpingCounter = wallJumpingTime; CancelInvoke(nameof(StopWallJumping)); } else { wallJumpingCounter -= Time.deltaTime; } if (Input.GetButtonDown("Jump") && wallJumpingCounter > 0f) { isWallJumping = true; rb.velocity = new Vector2(wallJumpingDirection * wallJumpingPower.x, wallJumpingPower.y); wallJumpingCounter = 0f; if (transform.localScale.x != wallJumpingDirection) { isFacingRight = !isFacingRight; Vector3 localScale = transform.localScale; localScale.x *= -1f; transform.localScale = localScale; } Invoke(nameof(StopWallJumping), wallJumpingDuration); } } private void StopWallJumping() { isWallJumping = false; } private void Flip() { if (isFacingRight && horizontal < 0f || !isFacingRight && horizontal > 0f) { isFacingRight = !isFacingRight; Vector3 localScale = transform.localScale; localScale.x *= -1f; transform.localScale = localScale; } }
}
//Huge credits to bendux. Check out his yt

private void Form1_KeyDown(object sender, KeyEventArgs e) { switch (e.KeyCode) { case Keys.Left: Player_Left = true; break; case Keys.Right: Player_Right = true; break; } }

int Force
int Gravity
Boolean Player_Jump

if (!Player_Jump && !InAirNoCollision(pb_Player)) { Force = Gravity; Player_Jump = true; }

private void timer_Gravity_Tick(object sender, EventArgs e) { if (!Player_Jump && pb_Player.Location.Y + pb_Player.Height < WorldFrame.Height - 2 && !Collision_Top(pb_Player)) { pb_Player.Top += Speed_Fall; }
if (!Player_Jump && pb_Player.Location.Y + pb_Player.Height > WorldFrame.Height - 1) { pb_Player.Top--; } }

private void timer_Jump_Tick(object sender, EventArgs e) { if (Force > 0) { if (Collision_Bottom(pb_Player)) { Force = 0; } else { Force--; pb_Player.Top -= Speed_Jump; } } else { Player_Jump = false; } }