Basics of Unity: 2D Platformer Character Controller (i've finally made something a little more useful than raw unity info)

Here the the repo if youre just after the code (its all free to use)

https://github.com/superbird29/2DCharacterController

The Video

https://www.youtube.com/watch?v=ZVDbjhmdWgY

Here is the tutorial video where I walk you through making a 2D platformer character controller. It's pretty long (26 mins) since I do lots of explaining on the what something does, a little explaining on the why and I cover lots of my own pitfalls. It's also heavily chaptered to all skipping of parts you dont need!

Also it is very important to catch any pitfalls so if you see any let me know.


Let me know if you have any questions or concerns?

If you want a shorter one that just walks you through the code and doesnt opine as much on how to actually do it just let me know below!

I am also taking suggestions for future videos

https://redd.it/1gz40o0
@r_Unity3D

Text is not appearing when i open Unity, is there any way to solve this?
https://redd.it/1gz4vyn
@r_Unity3D

Platformer walljumping when I don't want it to

So I'm kinda new at this and trying to make a simple platformer noscript and I've gotten pretty close to what I want. Issue here is that when the character touches a wall instead of falling it just levitates midair, which allows for it to basically save from every fall by walljumping. Help?

{
//Movement
public float speed;
public float jump;
float moveVelocity;
public Rigidbody2D rb;
bool isGrounded;

void Update()
{
//Grounded?
if (isGrounded == true)
{
//jumping
if (Input.GetKeyDown(KeyCode.Space) || Input.GetKeyDown(KeyCode.UpArrow) || Input.GetKeyDown(KeyCode.Z) || Input.GetKeyDown(KeyCode.W))
{

GetComponent<Rigidbody2D>().velocity = new Vector2(GetComponent<Rigidbody2D>().velocity.x, jump);
}

}

moveVelocity = 0;

//Left Right Movement
if (Input.GetKey(KeyCode.LeftArrow) || Input.GetKey(KeyCode.A))
{
moveVelocity = -speed;
}
if (Input.GetKey(KeyCode.RightArrow) || Input.GetKey(KeyCode.D))
{
moveVelocity = speed;
}

GetComponent<Rigidbody2D>().velocity = new Vector2(moveVelocity, GetComponent<Rigidbody2D>().velocity.y);

}
void OnCollisionEnter2D(Collision2D col)
{
Debug.Log("OnCollisionEnter2D");
isGrounded = true;
}
void OnCollisionExit2D(Collision2D col)
{
Debug.Log("OnCollisionExit2D");
isGrounded = false;
}
}

https://redd.it/1gz7vsi
@r_Unity3D

3D characters creation!

https://redd.it/1gz7ig4
@r_Unity3D

Pipe system

So,, my character is liquid and i was thinking to add a pipe system that the character can go inn and go to different parts of the map, i just don't know how to do it, any ideas?

https://redd.it/1gz5my2
@r_Unity3D

I added deep snow to my delivery driving game ❄️🚚

https://redd.it/1gzawkz
@r_Unity3D

Seeking Advice on Creating a Plant Growth Mechanic Similar to Trellis in Unity

https://preview.redd.it/0qopboescz2e1.png?width=415&format=png&auto=webp&s=9f393ef668975b956e12c89de3fff1d0690038c6

This is the Game: Trellis

https://redd.it/1gzb8ht
@r_Unity3D

How can I make a background?

Hi, i'm a beginner on Unity and I'm sure how to make a background/map. I've seen a few tutorial about doing a tilemap, but everytime i do this, the tilemap overlap my character, so i'm not sure where i can look to make the character overlap the tilemap/background?
Btw srry for my bad english, its not my first language😅
Thx.

https://redd.it/1gz15pz
@r_Unity3D

I put a great big Akira inspired freight elevator in my game about a quantum cat. It really helps sell the scale of the environments.

https://redd.it/1gzdnl2
@r_Unity3D

Just published a free low-poly asset pack for creating ponds!

https://redd.it/1gzfxub
@r_Unity3D

What open source projects have you been a part of? Is it still active?

Hello everybody

I've been wanting to contribute to open source projects to sharpen my skills, but haven't found anything yet. wanted to see if you guys have been a part of the game dev open source community.
would love to hear about your experience

https://redd.it/1gzi2pf
@r_Unity3D

2D Character Walk animation

https://redd.it/1gzjs6t
@r_Unity3D

Bombay cat
https://redd.it/1gzl1ai
@r_Unity3D

Made a fire stream out of symbols. Does it look good? Current battle gameplay: everything shoots automatically. You just reload, maybe craft something mid-fight (like a shield or a support drone) and escape in time. Still deciding if I should rework it to give the player more control...

https://redd.it/1gzkvwt
@r_Unity3D

2D Platform Game for School Project... NEED HELP

Hey guys, this is my code in C# that i actually got from chatGPT because im not really good in coding haha... The problem is that for player2 (frog) it is not actally reseting horizontal velocity only after landing but its like allways... and if there is no reseting of horizontal velocity the frog is sliding after landing.. Can anybody help me with that somehow?

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class TwoPlayerMovement : MonoBehaviour
{
    Header("Player 1 Settings")
    public Rigidbody2D rb1;
    public Transform groundCheck1;
    public LayerMask groundLayer1;
    private float horizontal1;
    private float speed1 = 8f;
    private float jumpingPower1 = 16f;
    private bool isFacingRight1 = true;

    Header("Player 2 Settings (Frog)")
    public Rigidbody2D rb2;
    public Transform groundCheck2;
    public LayerMask groundLayer2;
    private bool isGrounded2;
    private bool isChargingJump2 = false;
    private bool wasInAir2 = false; // Detects if the frog was previously in the air
    private float chargeTime2 = 0f;
    private float maxChargeTime2 = 1.5f; // Maximum charge time
    private float minJumpPower2 = 6f; // Minimum jump strength
    private float maxJumpPower2 = 16f; // Maximum jump strength
    private float jumpDirection2 = 0f; // Direction of the jump (-1 = left, 1 = right)
    private bool isFacingRight2 = true;

    private void Update()
    {
        // Player 1 Controls
        horizontal1 = Input.GetAxisRaw("HorizontalP1"); // Custom axis for Player 1
        if (Input.GetButtonDown("JumpP1") && IsGrounded(groundCheck1, groundLayer1))
        {
            rb1.velocity = new Vector2(rb1.velocity.x, jumpingPower1);
        }
        if (Input.GetButtonUp("JumpP1") && rb1.velocity.y > 0f)
        {
            rb1.velocity = new Vector2(rb1.velocity.x, rb1.velocity.y 0.5f);
        }

        Flip(ref isFacingRight1, horizontal1, rb1.transform);

        // Player 2 (Frog) Controls
        isGrounded2 = IsGrounded(groundCheck2, groundLayer2);

        if (isGrounded2)
        {
            // If frog just landed, reset horizontal velocity
            if (wasInAir2)
            {
                rb2.velocity = new Vector2(0f, rb2.velocity.y); // Reset horizontal velocity only after landing
                wasInAir2 = false;
            }

            // Start charging the jump
            if (Input.GetButtonDown("JumpP2"))
            {
                isChargingJump2 = true;
                chargeTime2 = 0f;
            }

            // Set jump direction based on input
            float inputHorizontal = Input.GetAxisRaw("HorizontalP2");
            if (inputHorizontal != 0)
            {
                jumpDirection2 = inputHorizontal > 0 ? 1f : -1f;
                isFacingRight2 = jumpDirection2 > 0;
                Flip(ref isFacingRight2, jumpDirection2, rb2.transform);
            }
        }

        // Charge the jump
        if (isChargingJump2)
        {
            chargeTime2 += Time.deltaTime;
            chargeTime2 = Mathf.Clamp(chargeTime2, 0f, maxChargeTime2); // Limit to max charge time
        }

        // Release the jump
        if (Input.GetButtonUp("JumpP2") && isChargingJump2)
        {
            isChargingJump2 = false;

            // Calculate jump power based on charge time
            float jumpPower = Mathf.Lerp(minJumpPower2, maxJumpPower2, chargeTime2 / maxChargeTime2);

            // Apply the jump
            rb2.velocity = new Vector2(jumpDirection2 jumpPower, jumpPower);

            // Mark that the frog is in the air
            wasInAir2 = true;
        }
    }