I'm newbie programming Game with Unity Engine. I have searched "How to load animation from assets in unity " But haven't find solution.
I'm handle Trigger of collider
void OnTriggerCollisionEnter2D(Collision2D coll){
if(coll.gameObject.tag = "Player"){
//try to load animation
}
}
Help me if you know ! Thanks
First of all, I think you will have hard time making my solution work because it looks like you lack Unity basic stuff.
OnTriggerCollisionEnter2D is not a valid callback function to detect Trigger.
OnTriggerEnter2D(Collider2D coll) is what you are looking for.
Secondly, don't anything during onTrigger. Load the animation in the Start() function then play it in the OnTriggerEnter2D function.
Also if(coll.gameObject.tag = "Player") should be if(coll.gameObject.tag == "Player"). Notice the double '='. You compare with double '=' not one. but not efficient. If possible, use coll.gameObject.CompareTag instead of coll.gameObject.tag ==.
Put the Animation in the Assets/Resources/Animation folder
Animation animation;
AnimationClip animanClip;
string animName = "walk";
// Use this for initialization
void Start()
{
//Load Animation
loadAnimation();
}
void loadAnimation()
{
GameObject tempObj = Resources.Load("Animations/" + animName, typeof(GameObject)) as GameObject;
if (!tempObj == null)
{
Debug.LogError("Animation NOT found");
}
else
{
animation = tempObj.GetComponent<Animation>();
animanClip = animation.clip;
animation.AddClip(animanClip, animName);
}
}
public void OnTriggerEnter2D(Collider2D coll)
{
if (coll.gameObject.CompareTag("Player"))
{
animation.Play(animName);
}
}
Finally, study these tutorials.
Unity Scripting Tutorial
Unity Physics Tutorial
Other Unity Tutorials
Related
So I am taking a class in basic game development and am currently working on a game with Unity. My game worked perfectly up until now when I updated my unity version. In order for the player to actually take damage I have a method that can only be reached if explicitly called by a script. Somehow the ground, that has no script attached, damages my player.
I have posted the code below.
This one is part of the player script
3 references
public void Hurt(int dmg, string yep)
{
HP -= dmg;
Debug.Log($"took {dmg} damage from{yep}. You now have {HP} HP left");
if (HP <= 0)
{
SceneManagement.Death();
}
}
This one is part of the script attatched to my flame object
private void OnCollisionEnter2D(Collision2D collision)
{
if (collision.gameObject.tag != "FlameTurret" && collision.gameObject.tag != "flame")
{
player.GetComponent<PlayerController>().Hurt(damage, collision.gameObject.tag);
Destroy(this.gameObject);
}
}
This one is attatched to a projectile fired by the enemy
if (collision.gameObject.CompareTag("Player"))
{
if (!called)
{
collision.gameObject.GetComponent<PlayerController>().Hurt(damage, collision.gameObject.tag);
called = true;
}
}
This one is attatched to an enemy
if (collision.gameObject.CompareTag("Player"))
{
if (!called)
{
collision.gameObject.GetComponent<PlayerController>().Hurt(damage, collision.gameObject.tag);
called = true;
}
Destroy(this.gameObject);
}
Console output
Nothing with the tag "Ground" has a script and nothing else than the methods i've posted are supposed to reference my Hurt() method but the ground still damages my player. Any help would be greatly appreciated!
Your problem seems to be that this function here
private void OnCollisionEnter2D(Collision2D collision)
Will be run whenever any collider (game object with a collider component attached - the game object does not need to have any scripts attached to it) intersects with your player
This code here
if (collision.gameObject.tag != "FlameTurret" && collision.gameObject.tag != "flame")
Will pass so long as the object that collides does not have the tag of "FlameTurret" or "flame", which I assume your ground does not.
It seems to me a little odd that everything in your game will damage your player except for flames... is this an error?
Either way a simple fix would be to tag your ground with something like environment and then add under your OnCollisionEnter2D() have a check along the lines of
if (collision.gameObject.tag == "environment"){
return; // do nothing
}
I've got a problem. I am creating a small game project where where a ball escapes from ghosts.
I am trying to write a script that plays "evil laughter" when the ball collides with a ghost.
When i added the audio upon collision code into the script, the other function which gets the player to the "Game over"-scene stops working
Does anyone know what the problem might be?
Thanks a lot in advance! (code below) <3
public class GhostScript : MonoBehaviour
public AudioSource ghostCollision; //this is the collision sound reference
public GameObject target; //this is the player or a reference for him
UnityEngine.AI.NavMeshAgent agent;
// Start is called before the first frame update
void Start()
{
ghostCollision = GetComponent<AudioSource>();
agent = GetComponent<UnityEngine.AI.NavMeshAgent>();
if (target == null) {
target = GameObject.FindGameObjectWithTag("Player");
}
}
// Update is called once per frame
void Update()
{
agent.destination = target.transform.position;
}
public void OnCollisionEnter(Collision collision){
if (collision.gameObject.tag == "Player"){
ghostCollision.Play();
SceneManager.LoadScene("menu");
}
}
That's because as soon as you call SceneManager.LoadScene the current scene (which contains your Player, AI and AudioSource) gets lost and replaced with the new Scene. Adding a delay to the scene load should do the trick, you can use Invoke for that (or Coroutines if you're more advanced).
private void OnCollisionEnter(Collision other)
{
if (other.gameObject.tag == "Player")
{
ghostCollision.Play();
// Invokes the function after the AudioClip is over
Invoke("LoadScene", ghostCollision.clip.length);
}
}
private void LoadScene()
{
SceneManager.LoadScene("your-scene-name");
}
I'm working on my first Unity game and I'm having a problem with this script.
void FixedUpdate ()
{
Debug.Log ("dead is " + dead);
dead = Physics.OverlapSphere (frontCheck.position, radius, whatIsWall);
if (dead == true)
{
Debug.Log ("Player died!");
Invoke ("Reset", 1);
}
}
void Reset()
{
SceneManager.LoadScene ("Game");
}
I'm trying to make the bool dead true when the player runs into a wall, using a transform in front of the player. I was using Physics2D.OverLapPoint and it worked fine, but I had to change player's physics to 3D. I'm trying to use OverLapSphere now, but Im getting an error message "Cannot implicitly convert type UnityEngine.Collider[] to bool. What should I do to make this work? Im very much a beginner to Unity and coding in general, so it's probably a simple fix. Maybe I just need to try something else? thanks.
Better Approach
I believe a better approach to detect collisions is using OnColissionEnter.
https://docs.unity3d.com/ScriptReference/Collider.OnCollisionEnter.html
That way you can have a simple check such as:
void OnCollisionEnter(Collision col) {
if (col.gameObject.tag == "Wall"){
dead = true;
}
}
Here is a short tutorial on that: https://unity3d.com/learn/tutorials/topics/physics/detecting-collisions-oncollisionenter
Using OverlapSphere
If for some reason you prefer OverlapSphere, then you need to know that it doesn't return a bool as you are expecting. Instead, it returns all colliders that overlap with the sphere.
https://docs.unity3d.com/ScriptReference/Physics.OverlapSphere.html
I believe what you are looking for is:
void FixedUpdate ()
{
Debug.Log ("dead is " + dead);
Collider[] hitColliders = = Physics.OverlapSphere (frontCheck.position, radius, whatIsWall);
if (hitColliders.length != 0) {
Debug.Log ("Player died!");
Invoke ("Reset", 1);
}
}
What should I do to make this work?
I personally would use different approach then overlap. One of the easiest solutions is to use colliders and object tags.
To answer why is your code not working. It is mainly because variable "dead" is not bool and 'UnityEngine.Collider[]' cant be value "true".
This is example of Unity prefab 1st person controller which have assigned following script. After that all object which have any collider and tag set ro "red" will so to speak react to scrip.In this case it will write "I have collided with trigger"+something.
using UnityEngine;
public class collisionTest : MonoBehaviour {
void OnTriggerEnter(Collider trigg)
{
if (trigg.gameObject.tag == "Red")
{
Debug.Log("I have collided with trigger" + trigg.gameObject.name);
//do your stuff
}
}
}
I am using unity 5 c# and I have a gameobject with 2 trigger colliders one of them is in a different location.
I need to be able to use OnTriggerStay2D and OnTriggerEnter2D for them but I need to find what trigger is being entered. Right now if I enter the 1st(polygon) trigger the OnTriggerEnter activates for the 2nd(box).
How can I Tell the two colliders apart???
public void OnTriggerEnter2D(Collider2D other) //2nd collider trigger
{
if (other.tag == "Player") {
Found = true; //if the player is in shooting range
Idle = false;
}
}
public void OnTriggerStay2D(Collider2D other) //1st collider trigger
{
if (Found != true) {
if (other.tag == "Player") {
Shield = true;
Idle = false;
}
}
}
public void OnTriggerExit2D(Collider2D other) //2nd collider trigger
{
if (other.tag == "Player") {
Found = false;
Shield = false;
Shooting = false;
Idle = true;
}
}
I have tried making the 1st trigger public void OnTriggerStay2D(PolygonCollider2D other) but it says "This message parameter has to be of type: Collider2D
The message will be ignored."
What I am trying to do is have a polygon trigger in front of the gameobject and a different box trigger closer to the gameobject so when you go near the gameobject you enter the 1st trigger and it puts its shield up but when you get close to it (within shooting range of it) it will put its shield down and start shooting you.
Well collider2d detects all types of 2d colliders. It doesn't matter if it's polygon or just a box. As the documentation suggestions it doesn't need to be public or private. It only takes a collider2d as it's argument however.
For debugging purposes why not use print?
Print("you've entered the trigger function");
Also I wouldn't use 2 different trigger colliders on the same GameObject. Why not just make 2 separate gameobjects so you can have more thorough detection. Each GameObject with its own trigger collider can have different tags.
If you have to use 2 trigger colliders on one object. Which isn't the best idea. You could use shapeCount to determine which one it's hitting. Although like I said I would warrant against doing 2 trigger colliders on the same object when whatever you're trying to do can be easier on two separate objects.
However links aren't usually prohibited I think. I would watch and study these videos. They're very useful for explaining the engine and they really aren't even that long.
https://unity3d.com/learn/tutorials/modules/beginner/2d
They even have a video explaining 2d colliders.
This is my fix. In one of my games I have a boulder, I have a trigger which will delete a block below it so it falls, I then have another trigger which tells the boulder to start moving left or right I then also have another trigger which will delete the boulder once the boulder comes in contact.
So what you can do is create 2 new game objects, create a new CS file and name them appropriately, then with those two new classes allow them to take in the gameobject you are referring to in your question.
Then when they are triggered you can use code from their class.
So your first class would become something like this
public void OnTriggerEnter2D(Collider2D other)
{
if (other.tag == "Player") {
Enemy.Found = true; //if the player is in shooting range
Enemy.Idle = false;
}
}
public void OnTriggerExit2D(Collider2D other)
{
if (other.tag == "Player") {
Enemy.Exit2DTrigger();
}
}
Then the other class would be something like this
public void OnTriggerStay2D(Collider2D other)
{
if (Enemy.Found != true) {
if (other.tag == "Player") {
Enemy.Shield = true;
IEnemy.dle = false;
}
}
}
public void OnTriggerExit2D(Collider2D other)
{
if (other.tag == "Player") {
Enemy.Exit2DTrigger();
}
}
Then in your Enemy class you would have
public void Exit2DTrigger()
{
Found = false;
Shield = false;
Shooting = false;
Idle = true;
}
P.S. also don't you need to use other.gameObject.tag == "Player" ?
I'm making a 2D sidescrolling game in Unity, and when the player shoots an obstacle, I want the obstacle animation to play and then destroy itself. I got it to destroy itself, but the animation won't play. Any suggestions?
protected Animation obsanim;
// Use this for initialization
void Start () {
obsanim = GetComponent<Animation> ();
}
// Update is called once per frame
void Update () {
}
void OnCollisionEnter2D(Collision2D col)
{
if (col.gameObject.tag == "circle")
{
obsanim.Play ("circobs");
Destroy (gameObject, 1.0f);
}
}
}
Thank you for any help!
Sounds good to me, assuming of course that the animation doesn't last more than 1 second. You could use animation["circobs"].length to figure out when you need to destroy.
Maybe the animation you're playing is in a lower layer than the current one?