The first wave of green goes right (to the first waypoint), but after lengthening the tunnel, the second wave is why green you lose the first waypoint and go straight to the second. (And why is that somehow a roundabout way)
Sorry for my bad english.
The first wave of green goes right (to the first waypoint), but after lengthening the tunnel, the second wave is why green you lose the first waypoint and go straight to the second. (And why is that somehow a roundabout way)
Actually two questions:
1) how to fix the first waypoint
2) why is it so weird going to the second waypoint
Here is the code of the enemy to iterate through waypoints.
using System;
using UnityEngine;
using UnityEngine.AI;
[RequireComponent(typeof(NavMeshAgent))]
public class EnemyMovement : MonoBehaviour
{
[SerializeField] public Transform[] points;
[SerializeField] private int destPoint = 0;
private NavMeshAgent agent;
void Start()
{
agent = GetComponent<NavMeshAgent>();
agent.autoBraking = false;
agent.destination = points[destPoint].position;
}
void GotoNextPoint()
{
if(destPoint != points.Length)
{
agent.destination = points[destPoint].position;
}
}
void Update()
{
if(agent.remainingDistance < 0.5f)
{
destPoint++;
GotoNextPoint();
}
}
private void OnDrawGizmos()
{
Gizmos.DrawLine(gameObject.transform.position, points[destPoint].position);
}
}
It’s decided that the thing is that NavMesh makes large tiles (NavMeshBuildSettings.tileSize), but I couldn’t change it because I used someone else’s work (https://github.com/Unity-Technologies/NavMeshComponents/tree/mast… mples / Scripts). So it turned out that to change the runtime navMesh, you must not only register in the grid change code, but write the line (.overrideTileSize = true;)
var defaultBuildSettings = NavMesh.GetSettingsByID (0).overrideTileSize = true;
After that I was able to change the size of the tile, and the choice of the wrong path was stopped.
Related
I'm a real noob, I am an artist that just started out programming and have looked around a lot for a solution to this, the closest i could find was a reddit post with the same problem as mine but even there no one could find a solution.
I have set up an animator controller and have given it all the parameters i need, walking, running, jumping etc. If I use a player controller script everything works like a charm. Now when I want to turn this character into an NPC and place the patrol AI script I picked up from the unity manual, things aren't working right.
I have baked my navmesh, I have added the NavMeshAgent component too. The NPC slides around, but the animation doesn't play
using UnityEngine;
using UnityEngine.AI;
using System.Collections;
public class Patrol : MonoBehaviour
{
Animator animator;
public Transform[] points;
private int destPoint = 0;
private NavMeshAgent agent;
void Start()
{
animator = GetComponent<Animator>();
agent = GetComponent<NavMeshAgent>();
// Disabling auto-braking allows for continuous movement
// between points (ie, the agent doesn't slow down as it
// approaches a destination point).
agent.autoBraking = false;
GotoNextPoint();
}
void GotoNextPoint()
{
// Returns if no points have been set up
if (points.Length == 0)
return;
// Set the agent to go to the currently selected destination.
agent.destination = points[destPoint].position;
// Choose the next point in the array as the destination,
// cycling to the start if necessary.
destPoint = (destPoint + 1) % points.Length;
}
void Update()
{
animator.SetBool("isRunning", true);
// Choose the next destination point when the agent gets
// close to the current one.
if (!agent.pathPending && agent.remainingDistance < 0.5f)
GotoNextPoint();
}
}
A screenshot of the animator
Animator starts from the default state (indicated by orange color) and transitions happen based on that. Based on the screenshot of your animator, from your default state, animator can go to Idle, SwordSlash and SwordJump states and there is no transition between the Idle state and the Run state. Nevertheless your code sets the isRunning bool to true. If you want it to work you must set the isWalking bool to true, so the animator goes into SwordWalk state. From there you can set isRunning to true to go to Run animation. Another way is to change isRunning to isWalking (By the way, I suggest you study about 1D blend trees)
I am trying to practice creating a clone of Galaga following the same ruleset as the original. I am currently stuck trying to attempt a limit on the amount of cloned prefabs that can be in the scene at any one time, in the same way that Galaga's projectiles are limited to 2 on screen at any time. I want to make it so the player can shoot up to two projectiles, which destroy after 2 seconds or when they collide (this part is functioning), followed by not being able to shoot if two projectile clones are active and not yet destroyed in the hierarchy (Not working as I can instantiate projectiles over the limit of 2).
I have combed through Google for about 3 hours with no solutions that have worked for me, at least in the ways that I had attempted to implement them.
Thank y'all so much for the help!
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class playerController : MonoBehaviour
{
public float moveSpeed = 1.0f;
public playerProjectile projectile;
public Transform launchOffset;
public int maxBullets = 0;
private GameObject cloneProjectile;
public Rigidbody2D player;
// Start is called before the first frame update
void Start()
{
player = this.GetComponent<Rigidbody2D>();
}
// Update is called once per frame
void Update()
{
MovePlayer();
PlayerShoot();
}
public void MovePlayer()
{
player.velocity = new Vector2(Input.GetAxis("Horizontal"), Input.GetAxis("Vertical")) * moveSpeed;
}
public void PlayerShoot()
{
if (Input.GetKeyDown(KeyCode.Z))
{
var cloneProjectile = Instantiate(projectile, launchOffset.position, launchOffset.rotation);
maxBullets++;
if (maxBullets >= 3)
{
Destroy(cloneProjectile, 0.1f);
maxBullets --;
return;
}
}
}
}
You could change the logic up a bit. An instance of the playerController class is active as long as the game is active, so it will know and retain the value of 'maxBullets' until you die or exit the program.
So instead, every time you click "z", the first thing you should do is run the check. If the current amount of live projectiles equals the maximum, have the logic 'return' and exit out of the method.
I am trying to create a script for my enemy turret, but it is not going well. I have a couple animations of the turret being activated and deactivated. What I need is that based on the distance from the player, it plays either animation. So once it moves inside the detection radius it plays the activation animation and once it is outside it plays the deactivation animation. Most of the other ways I try require me to create an Animation Controller, which I have little experience in using. I want a simple way to play one animation once it is inside and play a different one when it is outside. I think there was a way to store the animation clip in the script, and then play it. I have attached my current script, so you know what I mean.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class EnemyTurret : MonoBehaviour
{
public GameObject Player;
public float DistanceToPlayer;
public float DetectionRadius = 75;
// Start is called before the first frame update
void Start()
{
Player = GameObject.FindGameObjectWithTag("PlayerTank");
}
// Update is called once per frame
void Update()
{
DistanceToPlayer = Vector3.Distance(transform.position, Player.transform.position);
if (DistanceToPlayer<=DetectionRadius)
{
Debug.Log("Within Radius");
}
if (DistanceToPlayer >= DetectionRadius)
{
Debug.Log("Outside Radius");
}
}
}
Calculating and checking the distance of the player for every update() is not ideal. It will work, but it will do more work than it needs to when the player isn't even near it. Its not efficient.
What you may want to do if your player is a Rigidbody, is add a SphereCollider to the turret, set isTrigger=true, set the radius to be your detection radius, and handle the OnTriggerEnter() and OnTriggerExit() events to play or stop animations.
You can also add two public Animiation objects to the script, drag and drop your animations in the editor, then you can use animation.Play() and .Stop() etc. to control the animations.
Something similar to this. Not tested fully, but you can get the idea.
public float detectionRadius = 75;
public Animation activateAnimation;
public Animation deactivateAnimation;
void Start()
{
SphereCollider detectionSphere = gameObject.AddComponent<SphereCollider>();
detectionSphere.isTrigger = true;
detectionSphere.radius = detectionRadius;
detectionSphere.center = Vector3.zero;
}
private void OnTriggerEnter(Collider other)
{
if (other.gameObject.tag == "PlayerTank")
{
activateAnimation.Play();
}
}
private void OnTriggerExit(Collider other)
{
if (other.gameObject.tag == "PlayerTank")
{
deactivateAnimation.Play();
}
}
Your animations must not loop otherwise you will have to add more logic to check if animation.isPlaying and do your own animation.Stop() etc.
I am very new at C# (around 1 week in), so I have been following a lot of tutorials. I am at the moment trying to edit a piece of code (unity tutorial) to only have the enemy follow the player when in a certain range of the player (10 foot), but unfortunately without changing the code completely, I cannot find a solution. At the moment the enemy will only follow the player when the player is alive (which i also want).
I've tried googling what I want, but I don't want to change the code from what is it too much. I am very new at c# and and currently learning bit by bit, other methods I have found require me changing the code a lot. As far as I understand, the main focus of the code below is for the enemy to be completely controlled by the Nav Mesh Agent, is it possible for me to keep the same technique?
using UnityEngine;
using System.Collections;
public class EnemyMovement : MonoBehaviour
{
Transform player;
PlayerHealth playerHealth;
EnemyHealth enemyHealth;
UnityEngine.AI.NavMeshAgent nav;
void Awake()
{
// references
player = GameObject.FindGameObjectWithTag("Player").transform;
playerHealth = player.GetComponent<PlayerHealth>();
enemyHealth = GetComponent<EnemyHealth>();
nav = GetComponent<UnityEngine.AI.NavMeshAgent>();
}
void Update()
{
if (enemyHealth.currentHealth > 0 && playerHealth.currentHealth > 0)
{
nav.SetDestination(player.position);
transform.LookAt(player);
}
else
{
nav.enabled = false;
}
}
}
If possible, I would like to add 2 if functions. 1 being the check if the player is alive, and the other to check if the player is within distance. I don't know much about raycast at the moment, so will this be the next step for me to learn to get this to work how i want?
Thankyou for your time.
Dean.
You can calculate distance by doing:
float distance = Vector3.Distance(player.transform.position,transform.position);
You can do a check if it's no larger than some amount with:
bool playerIsCloseEnough = distance <= amount;
And you can check if the player is alive with:
bool playerIsAlive = playerHealth.currentHealth > 0;
Then, you can do things if they're both true with:
if (playerIsAlive && playerIsCloseEnough)
{
// ...
}
And as you mentioned in the comment, you'll need to set nav.enabled=true; in void Awake or void Start to make sure the nav mesh is turned on :)
I have a cannon that fires a bullet in a parabolic arc. Right now when I fire the bullet stays in the same rotation as it was when it fired out of the cannon.
How do I make it so the bullet's rotation follows the arc as it travels through the air?
I tried the following as a script running on the bullet
Exhibit 1
public class PointingBehaviour:MonoBehaviour
{
private Rigidbody rb;
private void Awake()
{
rb = GetComponent<Rigidbody>();
}
public void Update()
{
transform.up = rb.velocity;
}
}
And that works fairly well. but I see a slight flicker on the first frame the object exists (I think this is because the velocity is still 0 at this point) and the object spins uncontrollably once it hits the ground.
I got it to stop flickering at the start and stop spinning when it lands by doing the following
public class BulletController : MonoBehaviour
{
private Rigidbody _rb;
private bool _followArc;
private bool _firstFrame;
private void Start()
{
_rb = GetComponent<Rigidbody>();
_firstFrame = true;
_followArc = true;
}
public void LateUpdate()
{
if (_followArc && !_firstFrame)
transform.up = _rb.velocity;
_firstFrame = false;
}
public void OnCollisionEnter(Collision collision)
{
_followArc = false;
}
}
But if I happen to bump something in the air it stops following the arc and just does a free tumble till it lands. What is the "Correct" way to do what I want to do?
Because people wanted to see it, here is the code for spawning the bullet.
public class TankController : MonoBehaviour
{
private Transform _barrelPivot;
private Transform _bulletSpawn;
public GameObject Bullet;
public float FirePower;
public float RotationSpeed;
public float TiltSpeed;
private void Start()
{
_barrelPivot = GetComponentsInChildren<Transform>().First(x => x.CompareTag("BarrelPivotPoint"));
_bulletSpawn = GetComponentsInChildren<Transform>().First(x => x.CompareTag("BulletSpawn"));
}
private void Update()
{
if (Input.GetKeyDown(KeyCode.Space))
{
FireCannon();
}
//(SNIP) Handle turning left and right and pivoting up and down.
}
private void FireCannon()
{
var newBullet = SpawnBullet();
var rb = newBullet.GetComponent<Rigidbody>();
rb.AddForce(_bulletSpawn.up * FirePower, ForceMode.Impulse);
}
private GameObject SpawnBullet()
{
var newBullet = (GameObject) Instantiate(Bullet, _bulletSpawn.position, _bulletSpawn.rotation);
newBullet.transform.localScale = Bullet.transform.localScale;
return newBullet;
}
}
I believe what you're saying is - your're script exhibit1 works great.
If you think about it, all you have to do is turn off that behavior, when you want to.
In this case, you're thinking "that behavior should stop when it hits the ground .. I assume that's what you mean physically.
It's very easy to turn off a MonoBehaviour, as you know just enabled = false;
So, you have some script somewhere like Bullet or perhaps BulletBoss
In there you'll have a variable private PointingBehaviour pb and you'll just pb.enabled = false
(I can't tell you "when" you want to do that, it depends on your game .. so it might be something like "when altitude is less than blah" or "when I hit something" ... probably OnCollisionEnter related.)
Note that - I'm sure you know this - for pointing behavior for a projectile, just setting it along the tangent is pretty basic.
A lovely very easy thing to do when you're writing a pointing behavior for a projectile like that, try lerping it gently to the tangent. The result is amazing real looking. Next perhaps add some random "wiggles" which is very bomb-like. It's amazing how the user can see such things, only only a few frames. (The next step up would be real air physics I guess!)
Note that, certainly, PointingBehaviour should just be its own script. You must keep behaviors totally isolated.
Regarding LateUpdate mentioned, there is never a need to use it.
Unity offer a "script order execution" system (see Preferences menu option), if one truly wants to order within the frame. But about the only reason to do that would be perhaps for some experimentation reason.
It's rather like "using a global" - there's just no reason for it. As with any code, if you have to do something in a given order, just call in order.