enter code hereHello im trying to make a laser but the collider as a weird offset from the collider. I tried moving some object out of the parent but it didnt changed anything. The only place where it works properly is 0,0,0.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Laser : MonoBehaviour
{
[SerializeField] public float defDistanceRay = 100;
public Transform laserFirePoint;
public LineRenderer m_lineRenderer;
public Transform m_transform;
// Start is called before the first frame update
void Start()
{
}
// Update is called once per frame
void Update()
{
ShootLaser();
}
void ShootLaser(){
if(Physics2D.Raycast(m_transform.position, transform.right)){
RaycastHit2D _hit = Physics2D.Raycast(laserFirePoint.position, transform.right);
Draw2DRay(laserFirePoint.position, _hit.point);
}
else{
Draw2DRay(laserFirePoint.position, laserFirePoint.transform.right * defDistanceRay);
}
}
void Draw2DRay(Vector2 startPos, Vector2 endPos) {
m_lineRenderer.SetPosition(0, startPos);
m_lineRenderer.SetPosition(1, endPos);
}
}
This code made it work properly whitout before I added this code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Laser_collision : MonoBehaviour
{
public LineRenderer LineRenderer;
public EdgeCollider2D collider;
void Update(){
int pointcount = LineRenderer.positionCount;
Vector2[] points = new Vector2[pointcount];
for(int i = 0; i < pointcount; i++){
points[i] = LineRenderer.GetPosition(i);
}
collider.points = points;
}
}
Thank you for your time
Related
I am creating a tracing game in unity. Where the tracing object is the sprite. I want the line renderer to not cross the sprite boundaries although collision is being detected but I an't figure out how to make line stay inside the sprite only.
DrawManager.cs
`using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class DrawManager : MonoBehaviour
{
private Camera _cam;
[SerializeField] private Line _lineprefab;
private Line _currentline;
public const float RESOLUTION = 0.1f;
void Start()
{
_cam = Camera.main;
}
// Update is called once per frame
void Update()
{
Vector2 mousePos = _cam.ScreenToWorldPoint(Input.mousePosition);
if (Input.GetMouseButtonDown(0)) {
_currentline = Instantiate(_lineprefab,mousePos,Quaternion.identity);
}
if (Input.GetMouseButton(0)) _currentline.SetPosition(mousePos);
}
}
Line.cs
`using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Linq;
public class Line : MonoBehaviour
{
[SerializeField] private LineRenderer _renderer;
[SerializeField] private EdgeCollider2D _collider;
private List<Vector2> _points = new List<Vector2>();
collision oncollision;
[SerializeField] private GameObject collisioncheck;
void Start()
{
_collider.transform.position -= transform.position;
oncollision = collisioncheck.GetComponent<collision>();
}
public void SetPosition(Vector2 pos)
{
if (!CanAppend(pos)) return;
_points.Add(pos);
_collider.points = _points.ToArray();
_renderer.positionCount++;
_renderer.SetPosition(_renderer.positionCount - 1, pos);
}
private bool CanAppend(Vector2 pos)
{
if (_renderer.positionCount == 0) return true;
return Vector2.Distance(_renderer.GetPosition(_renderer.positionCount - 1), pos) > DrawManager.RESOLUTION;
}
}
Collision.cs
`using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class collision : MonoBehaviour
{
private static bool iscollided;
private void OnCollisionEnter2D(Collision2D collision)
{
if (collision.gameObject.tag == "Player")
{
iscollided = true;
}
Debug.Log("entered");
}
public bool getiscollided() {return iscollided; }
private void OnCollisionStay2D(Collision2D collision)
{
Debug.Log("collision stayed");
}
private void OnCollisionExit2D(Collision2D collision)
{
Debug.Log("exit");
}
public void ResetCollision()
{
iscollided = false;
}
}
I tried stopping the line using iscollided but getting nullexception error
The game is working correctly and there arent any other issues apart from the fact that the public fields from the players scripts that are supposed to be filled with game objects from the scene arent filled and im not sure how to do that.
heres an example from one of the scripts: image
and heres what it should look like: image
the joystick area from the second image is from the scene, not an asset: image
here is the code im using:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class MovePlayer : MonoBehaviour
{
public MovementJoystick movementJoystick;
public int playerSpeed;
private Rigidbody2D rb;
bool facingRight = true;
public Animator animator;
public float interval;
// Start is called before the first frame update
void Start()
{
rb = GetComponent<Rigidbody2D>();
playerSpeed = 7;
interval = 10;
}
// Update is called once per frame
void FixedUpdate()
{
if (movementJoystick.joystickVec.y != 0)
{
rb.velocity = new Vector2(movementJoystick.joystickVec.x * playerSpeed, movementJoystick.joystickVec.y * playerSpeed);
animator.SetFloat("speed", Mathf.Abs(movementJoystick.joystickVec.x));
}
else
{
rb.velocity = Vector2.zero;
animator.SetFloat("speed", Mathf.Abs(0));
}
if (movementJoystick.joystickVec.x < 0 && !facingRight)
{
Flip();
}
if (movementJoystick.joystickVec.x > 0 && facingRight)
{
Flip();
}
}
void Update()
{
if (playerSpeed == 14 && interval > 0)
{
interval -= Time.deltaTime;
}
else
{
playerSpeed = 7;
interval = 10;
}
}
void Flip()
{
transform.Rotate(0f, 180f, 0f);
facingRight = !facingRight;
}
public void SpeedControl(int newplayerSpeed)
{
playerSpeed = newplayerSpeed;
}
}
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
public class MovementJoystick : MonoBehaviour
{
public GameObject joystick;
public GameObject joystickBG;
public Vector2 joystickVec;
private Vector2 joystickTouchPos;
private Vector2 joystickOriginalPos;
private float joystickRadius;
// Start is called before the first frame update
void Start()
{
joystickOriginalPos = joystickBG.transform.position;
joystickRadius = joystickBG.GetComponent<RectTransform>().sizeDelta.y / 2;
}
public void PointerDown()
{
joystick.transform.position = Input.mousePosition;
joystickBG.transform.position = Input.mousePosition;
joystickTouchPos = Input.mousePosition;
}
public void Drag(BaseEventData baseEventData)
{
PointerEventData pointerEventData = baseEventData as PointerEventData;
Vector2 dragPos = pointerEventData.position;
joystickVec = (dragPos - joystickTouchPos).normalized;
float joystickDist = Vector2.Distance(dragPos, joystickTouchPos);
if (joystickDist < joystickRadius)
{
joystick.transform.position = joystickTouchPos + joystickVec * joystickDist;
}
else
{
joystick.transform.position = joystickTouchPos + joystickVec * joystickRadius;
}
}
public void PointerUp()
{
joystickVec = Vector2.zero;
joystick.transform.position = joystickOriginalPos;
joystickBG.transform.position = joystickOriginalPos;
}
}
this is how to instantiate the player using photon servers (what i am using)
public GameObject playerToSpawn;
PhotonNetwork.Instantiate(playerToSpawn.name, spawnPoint.position, Quaternion.identity);
There are also 2 buttons i need you to fix: a Shoot button and a Hit button (those are the names). Here is the code for them:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class ShootButton : MonoBehaviour
{
//i made this script for the button incase you may
have
needed it
}
Here is the shooting script attached to the player:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class Weapon : MonoBehaviour
{
public Transform firePoint;
public GameObject bulletPrefab;
public Button ShootButton;
void Start()
{
ShootButton.onClick.AddListener(ShootButtonTrue);
}
void ShootButtonTrue()
{
Shoot();
}
void Shoot()
{
Instantiate(bulletPrefab, firePoint.position,
firePoint.rotation);
}
}
Here is the hitting script attached to the Hit button
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class HitButton : MonoBehaviour
{
}
And here is the Player Combat script using for hitting:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class PlayerCombat : MonoBehaviour
{
public Animator animator;
public Button AttackButton;
public Transform attackPoint;
public float attackRange = 0.5f;
public LayerMask enemyLayers;
void Start()
{
AttackButton.onClick.AddListener(AttackButtonTrue);
}
void AttackButtonTrue()
{
Attack();
}
void Attack()
{
animator.SetTrigger("Attack");
Collider2D[] hitEnemies = Physics2D.OverlapCircleAll(attackPoint.position, attackRange, enemyLayers);
foreach(Collider2D enemy in hitEnemies)
{
Debug.Log("u hit someone :O");
enemy.GetComponent<Health>().TakeDamage(15);
}
}
void OnDrawGizmosSelected()
{
if (attackPoint == null)
return;
Gizmos.DrawWireSphere(attackPoint.position, attackRange);
}
}
if you need any other pieces of code just ask
thanks in advance, i will mark the answer as an answer if its a good answer
There are multiple ways to achieve this. For example, you can make your joystick singleton and assign that to the player upon spawn. If you have multiple joysticks in the scene, you can group them under the same parent object and make that parent singleton.
Assuming you only have one joystick in the scene, add this into your joystick class:
public static MovementJoystick Instance { get; private set; }
void Awake()
{
if (Instance != null && Instance != this)
{
Destroy(this);
}
else
{
Instance = this;
}
}
In your player class, add this:
void OnEnable()
{
if( movemaneJoystick == null)
{
movementJoystick = MovementJoystick.Instance;
}
}
I am trying to instantiate a prefab and I want it's location to be the exact same as the position of game object with name "spawnedPos" . Somehow the prefab is not instantiated on the exact same position.
code :
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class ShurikenSpawn : MonoBehaviour
{
public GameObject[] gameReference;
public GameObject spawnedShar;
public Vector2 pos;
public Transform playerPos;
public float posX, posY;
public Transform spawnedPos;
void Start()
{
}
private void Update()
{
spawnedPos = GameObject.FindWithTag("spawnedPos").transform;
playerPos = GameObject.FindWithTag("Player").transform;
//posX = playerPos.position.x;
//posY = playerPos.position.y;
// pos = new Vector2(posX, posY);
spawnedPos.position = playerPos.transform.position;
// spawnedPos.transform.position = pos;
if (Input.GetKeyDown(KeyCode.F))
{
spawnedShar = Instantiate(gameReference[0],spawnedPos);
}
}
}
The code you are using for instantiation sets the parent of the object and not the position.
Use this:
Instantiate(gameReference[0],spawnedPos.position, Quaternion.identity ,spawnedPos);
I am making flappy bird in unity and need help this is the code i am working on and the error code is Assets\FlyLittleBird.cs(7,27): error CS1003: Syntax error, ',' expected
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class FlyLittleBird : MonoBehaviour {
public float velocity - 1;
private Rigidbody2D rb;
// Use this for initialization
void Start() {
rb = GetComponent<Rigidbody2D>();
}
// Update is called once per frame
void Update() {
if(Input.GetMouseButtonDown(0))
{
// Jump
rb.velocity = Vector2.up * velocity;
}
}
}
In the 7th line of your code
i.e. public float velocity - 1;
You must correct it as-
public float velocity = 1;
At the moment I am programming a Unity 2D game. When the game is running the cars start moving and respawn continuously. I added kind of a life system to enable the possibility to shoot the cars. My issue is that my health bar as well as my score board need references to the objects they refer to, but I am unable to create a reference to an object which is not existing before the game starts. Another issue is that I don't know how to add a canvas to a prefab in order to spawn it with the cars continuously and connect them to the car. Is there a way to avoid these conflicts or how is it possible to set the references into prefabs. I will add the code of the spawner, the car and the the scoreboard. Already thank you in advance
Spawner:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Spawner : MonoBehaviour
{
public GameObject carPrefab;
public GameObject enemyCarPrefab;
public GameObject kugel;
public float respawnTime = 10.0f;
public int counterPlayer1=0;
public int counterPlayer2=0;
public int counterEnergy=0;
// Use this for initialization
void Start () {
StartCoroutine(carWave());
}
private void spawnPlayerCars(){
GameObject a = Instantiate(carPrefab) as GameObject;
a.transform.position = new Vector2(-855f, -312.9426f);
counterPlayer1++;
}
private void SpawnEnemyCars(){
GameObject b = Instantiate(enemyCarPrefab) as GameObject;
b.transform.position = new Vector2(853,-233);
counterPlayer2++;
}
private void SpawnEnergy(){
GameObject c = Instantiate(kugel) as GameObject;
c.transform.position = new Vector2(-995,-192);
counterEnergy++;
}
IEnumerator carWave(){
while(true){
yield return new WaitForSeconds(respawnTime);
if(counterPlayer1<3){
spawnPlayerCars();
Debug.Log(counterPlayer1);
}
if(counterPlayer2<3){
SpawnEnemyCars();
Debug.Log(counterPlayer2);
}
if(counterEnergy<3){
SpawnEnergy();
}
}
}
}
Car:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class EnemyCar : MonoBehaviour
{
public float speed = 3f;
int zählerAuto1=0;
private Vector2 screenBounds;
public AnzeigePunktzahlPlayer2 points;
public Spawner sp;
public int maxHealth=100;
public int currentHealth;
public HealthBar healthbar;
void Start () {
screenBounds = Camera.main.ScreenToWorldPoint(new Vector2(Screen.width, Screen.height));
points= GetComponent<AnzeigePunktzahlPlayer2>();
sp= GetComponent<Spawner>();
currentHealth=maxHealth;
healthbar.SetMaxHealth(maxHealth);
}
void Update()
{
Vector2 pos = transform.position;
if(pos.x>-855f){
pos = transform.position;
pos.x-= speed* Time.deltaTime;
transform.position=pos;
zählerAuto1++;
}else{
points.counter++;
Debug.Log(points.counter);
sp.counterPlayer2--;
Debug.Log(sp.counterPlayer2);
Destroy(this.gameObject);
}
}
private void OnCollisionEnter2D(Collision2D other) {
if (other.collider.tag=="Kugel"){
takeDamage(40);
//sp.counterPlayer2--;
if(currentHealth<=0)
{
Destroy(this.gameObject);
}
}
}
public void takeDamage(int damage){
currentHealth-= damage;
healthbar.SetHealth(currentHealth);
}
public void getHealed(int heal){
currentHealth+= heal;
healthbar.SetHealth(currentHealth);
}
}
Scoreboard(one part of it(the other one is almost the same)):
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;
public class AnzeigePunktzahlPlayer1 : MonoBehaviour
{
public int counter;
public TextMeshProUGUI textPlayer1;
void Start()
{
// counter=0;
textPlayer1= GetComponent<TextMeshProUGUI>();
}
// Update is called once per frame
void Update()
{
textPlayer1.SetText( counter.ToString());
}
}
You could make the health bars and the canvas children of the Car prefab and have them spawn together.