I'm trying to understand what does hit.normal return from linecast.
This is simple method to checking slope limit for character, the only thing i want to know is hit.normal what is it?
private void check_slope_limit() {
// Var
var hit_angle = 0f;
// Raycast
RaycastHit hit;
// Line of direction: if hit ground layer
if (
Physics.Linecast(transform.position + Vector3.up, transform.position + direction.normalized, out hit, ground_layer)
){
hit_angle = Vector3.Angle(Vector3.up, hit.normal);
var target_point = hit.point + direction.normalized;
Debug.DrawLine(transform.position + Vector3.up, transform.position + direction.normalized, Color.yellow);
if (
hit_angle > slope_limit
&&
Physics.Linecast(transform.position + Vector3.up, target_point, out hit, ground_layer)
){
if (hit_angle > slope_limit){
move = false;
return;
}
}
}
move = true;
}
I really hate do something without understanding
It's the normal of the surface at the hit point:
Related
I'm making a 2D game on Unity and I created an overlap to see if the ball is on the hit area. However, whenever I push the hit button, the ball is hit even if it is away of the player. I am sending the code for the Player, which contains what is needed so far, to see what may have gone wrong. Supposedly with the foreach hitCollider in hitColliders it should be fixed but it is not working I and just can´t wrap my mind around it.
public int speed;
public bool estoyFloor, subiendo, bajando;
public bool canRight, canLeft;
public bool canMove;
public float posYinit;
public Vector3 posInitPlayer;
bool m_Started;
public LayerMask m_LayerMask;
public GameObject volleyBall;
// Use this for initialization
void Start () {
m_Started = true;
}
void FixedUpdate()
{
Collider2D[] hitColliders = Physics2D.OverlapBoxAll(gameObject.transform.position, transform.localScale / 2, 0);
foreach (Collider2D hitCollider in hitColliders)
{
if (Input.GetButtonDown("Fire1"))
{
volleyBall.GetComponent<Rigidbody2D>().velocity = Vector3.zero;
volleyBall.GetComponent<Rigidbody2D>().AddForce(new Vector3(300, 500));
}
}
}
void OnDrawGizmos()
{
Gizmos.color = Color.red;
if (m_Started)
Gizmos.DrawWireCube(transform.position, transform.localScale / 2);
}
// Update is called once per frame
void Update () {
if (Input.GetButtonDown("Fire1"))
canMove = true;
if (Input.GetAxisRaw("Horizontal") > 0 && canRight)
transform.position += Vector3.right * speed * Time.deltaTime;
if (Input.GetAxisRaw("Horizontal") < 0 && canLeft)
transform.position += Vector3.left * speed * Time.deltaTime;
if (Input.GetButtonDown("Jump") && estoyFloor)
{
subiendo = true;
posYinit = transform.position.y;
}
if (transform.position.y > posYinit + 2.5f)
{
subiendo = false;
bajando = true;
}
if (!estoyFloor && !subiendo)
bajando = true;
Debug.DrawLine(transform.position, transform.position + new Vector3(0, -1, 0), Color.red);
Debug.DrawLine(transform.position, transform.position + new Vector3(0.8f, 0, 0), Color.red);
Debug.DrawLine(transform.position, transform.position + new Vector3(1.5f, 0, 0), Color.red);
RaycastHit2D[] hitDown = Physics2D.LinecastAll(transform.position, transform.position + new Vector3(0, -1, 0));
RaycastHit2D[] hitsRight = Physics2D.LinecastAll(transform.position, transform.position + new Vector3(0.8f, 0, 0));
RaycastHit2D[] hitsLeft = Physics2D.LinecastAll(transform.position, transform.position + new Vector3(1.5f, 0, 0));
estoyFloor = false;
foreach (RaycastHit2D hit in hitDown)
{
if (hit.collider.name == "Floor")
{
bajando = false;
estoyFloor = true;
}
}
canRight = true;
foreach (RaycastHit2D hit in hitsRight)
{
if (hit.collider.tag == "Wall")
canRight = false;
}
canLeft = true;
foreach (RaycastHit2D hit in hitsLeft)
{
if (hit.collider.tag == "Wall")
canLeft = false;
}
if (subiendo)
transform.position += Vector3.up * speed * Time.deltaTime;
if (bajando)
transform.position += Vector3.down * speed * Time.deltaTime;
}
Your overlap box is probably colliding with the player it is on. Because you do not check if the collider belonged to the volleyball in your loop, you are hitting the ball no matter what. Try to get the transform from the collider and check its tag to see if it is a volleyball before adding force to the ball and see if that works. You could also use a layermask on your Overlap box check as well to ensure only volleyballs get detected.
I am new to unity and I am trying to make a simple task: touch an object and then release your touch. when you release, I want to check in which side of the screen you released your touch and then move the object to that side of the screen.
So if I am pressing on my object, then swiping my finger to thr giht side, the object will move left and same for the right side...
This is my code, attached to the game object, and for some reason the object is just going to the right side of the screen. and it do it immidietly even though I used Lerp.
void OnMouseUp()
{
Vector3 pos = Input.mousePosition;
Debug.Log("press off");
if (pos.x < Screen.width / 2)
{
transform.position = Vector3.Lerp(transform.position, new Vector3(0,0,0), 2f * Time.deltaTime);
}
else
{
transform.position = Vector3.Lerp(transform.position, new Vector3(Screen.width, 0, 0), 2f * Time.deltaTime);
}
}
thank you!
So After a lot of trying this worked out for me:
public float smoothing = 7f;
IEnumerator MoveCoroutine(Vector3 target)
{
while (Vector3.Distance(transform.position, target) > 0.05f)
{
transform.position = Vector3.Lerp(transform.position, target, smoothing * Time.deltaTime);
yield return null;
}
}
void OnMouseUp()
{
Plane p = new Plane(Camera.main.transform.forward, transform.position);
Ray r = Camera.main.ScreenPointToRay(Input.mousePosition);
float d;
if (p.Raycast(r, out d))
{
Vector3 target = r.GetPoint(d);
if (target.x > 0)
{
Debug.Log("right:" + target.x + " total: " + Screen.width);
target.x = 5;
target.y = 0;
}
else
{
Debug.Log("left:" + target.x + " total: " + Screen.width);
target.x = -5;
target.y = 0;
}
StartCoroutine(MoveCoroutine(target));
}
}
not sure what the Ray casting does, I would be glad if someone can explain.
You code is almost right. You just need to define target positions and have Lerp called each time in update function.
A simple solution is to define two empty objects as position targets and pass them as parameters to the function.
using UnityEngine;
using System.Collections;
public class ClickTest : MonoBehaviour {
public Transform posLeft;
public Transform posRight;
private Vector3 destPos;
void Setup()
{
// default target is init position
destPos = transform.position;
}
// Update is called once per frame
void Update () {
// Define target position
if (Input.GetMouseButtonUp (0)) {
Vector3 pos = Input.mousePosition;
Debug.Log("press off : "+pos+ " scren : "+Screen.width);
if (pos.x < Screen.width / 2)
{
Debug.Log("left");
destPos = posLeft.position;
}
else
{
Debug.Log("right");
destPos = posRight.position;
}
}
// update position to target
transform.position = Vector3.Lerp(transform.position, destPos, 2f * Time.deltaTime);
}
}
Screenshot with empty objects as parameters
I'm working on a game right now (first 3D styled game), and I have a problem with my character colliding. I have a Player object, which has another object(s) as the real moveable characters (now I have only one). I have rigidbody and box collider too attached to my character. I have made a level (with hand-placed platforms), and I would like avoid my character of falling of the platforms, while the user control it. I have tried to place a cube on the side of the platform(s), with box collider attached to it, but the character not detect the colliding for some reasons. I would like my character to be stopped by the collider "cube", but it doesn't happen.
I use this script to move my object (attached to my character Player object) :
public class Bounce : MonoBehaviour {
float lerpTime;
float currentLerpTime;
float perc = 1;
Vector3 startPos;
Vector3 endPos;
bool firstInput;
public bool justJump;
public GameObject player;
// Update is called once per frame
void Update () {
if (Input.GetButtonDown("up") || Input.GetButtonDown("down") || Input.GetButtonDown("left") || Input.GetButtonDown("right")) {
if (perc == 1) {
lerpTime = 1;
currentLerpTime = 0;
firstInput = true;
justJump = true;
}
}
startPos = gameObject.transform.position;
if (Input.GetButtonDown("up") && gameObject.transform.position == endPos) {
endPos = transform.position + player.transform.rotation * (new Vector3(0, 0, 1f));
}
if (Input.GetButtonDown("down") && gameObject.transform.position == endPos) {
endPos = transform.position + player.transform.rotation * (new Vector3(0, 0, -1f));
}
if (firstInput == true) {
currentLerpTime += Time.deltaTime * 5;
perc = currentLerpTime / lerpTime;
gameObject.transform.position = Vector3.Lerp(startPos, endPos, perc);
if (perc > 0.8f) {
perc = 1;
}
if (Mathf.Round(perc) == 1) {
justJump = false;
}
}
}
void OnCollisionEnter(Collision collision) {
Debug.Log("!!!!!!!");
}
}
And I use this script on the character itself: (to rotate and animate it)
Code (csharp):
public class AnimationController : MonoBehaviour {
Animator anim;
public GameObject thePlayer;
// Use this for initialization
void Start () {
anim = gameObject.GetComponent<Animator>();
}
// Update is called once per frame
void Update () {
Bounce bounceScript = thePlayer.GetComponent<Bounce>();
if (bounceScript.justJump == true) {
anim.SetBool("Jump", true);
}
else {
anim.SetBool("Jump", false);
}
if (Input.GetButtonDown("right")) {
//transform.rotation *= Quaternion.Euler(0,30,0);
transform.RotateAround(transform.position, Vector3.up, 90);
}
if (Input.GetButtonDown("left")) {
transform.Rotate (0, -90, 0, 0);
}
}
}
It's only colliding when the cube not isKinematic, but it doesn't stop my player from getting through the cube for some reason.
I have read some sites about problems like this, but nothing helped yet.
It would be great if you can give me any code improvements :)
EDIT1:
Sorry, for answering so late, I couldn't do anything with my game in the last few days. Today I have tried to do something with raycasts, you can see my code, for my first try just in the update method:
void Update () {
if (Input.GetButtonDown("up") || Input.GetButtonDown("down") || Input.GetButtonDown("left") || Input.GetButtonDown("right")) {
if (perc == 1) {
lerpTime = 1;
currentLerpTime = 0;
firstInput = true;
justJump = true;
}
}
startPos = gameObject.transform.position;
/* if (Input.GetButtonDown("right") && gameObject.transform.position == endPos) {
//endPos = new Vector3(transform.position.x + 0.5f, transform.position.y, transform.position.z);
}
if (Input.GetButtonDown("left") && gameObject.transform.position == endPos) {
endPos = new Vector3(transform.position.x - 0.5f, transform.position.y, transform.position.z);
}*/
Vector3 fwd = player.transform.TransformDirection(Vector3.forward);
RaycastHit objectHit;
if (Physics.Raycast(player.transform.position, fwd, out objectHit, 2)) {
if (objectHit.collider.tag == "Wall") {
Debug.Log("WALL RAYCAST HIT!");
}
}
if (Input.GetButtonDown("up") && gameObject.transform.position == endPos) {
endPos = transform.position + player.transform.rotation * (new Vector3(0, 0, 1f));
}
if (Input.GetButtonDown("down") && gameObject.transform.position == endPos) {
//endPos = transform.position + player.transform.rotation * (new Vector3(0, 0, -1f));
}
if (firstInput == true) {
currentLerpTime += Time.deltaTime * 5;
perc = currentLerpTime / lerpTime;
gameObject.transform.position = Vector3.Lerp(startPos, endPos, perc);
if (perc > 0.8f) {
perc = 1;
}
if (Mathf.Round(perc) == 1) {
justJump = false;
}
}
}
With this I can get the Debug Log WALL RAYCAST HIT 2-3 times at a time, but only once. As I move the character it won't appear again, for some reason (I think it should because the update method is called in every frame).
Although when I place it in the Input.GetButtonDown("up") method, it won't log anything:
if (Input.GetButtonDown("up") && gameObject.transform.position == endPos) {
fwd = player.transform.TransformDirection(Vector3.forward);
if (Physics.Raycast(player.transform.position, fwd, out objectHit, 2)) {
if (objectHit.collider.tag == "Wall") {
Debug.Log("WALL RAYCAST HIT!");
}
}
endPos = transform.position + player.transform.rotation * (new Vector3(0, 0, 1f));
}
When you update the transform.position you actually "teleport" yout object to the new position. Even when you do this smoothly, using something like the Lerp function, as you do on your move script, Unity understands that you are teleporting your object to a new coordinate.
This is not wrong, All games work like that. Functions like Lerp just create the ilusion of movement, so the player fell like the character actually moved from one point to another.
What is happening is that your script keeps telling the character to move to a new position, despite any objects on its path. The collision happens, but your Update function still places the character on ints new position.
I can think of two possible ways for you to solve this:
Create an OnCollisionEnter() function for your Move script that somehow stops your movement. By creating a flag like you did with the firstInput you could achieve this.
Instead of updating your transform.position you could use a rigidbody to handle the movement and collisions for your. This way, everytime you need to move your character you will need to add some velocity to the character rigidbody, instead of directly updating the transform.position.
Since your character doesn't move in a constant way, but in a "one step at a time" way, I think the first solution is a better suitted for you.
The code will be something like this
void OnCollisionenter(Collision collision)
{
collided = true;
}
and the end of your Move script should be updated to
if(!collided)
{
if (firstInput == true) {
currentLerpTime += Time.deltaTime * 5;
perc = currentLerpTime / lerpTime;
transform.position = Vector3.Lerp(startPos, endPos, perc);
if (perc > 0.8f) {
perc = 1;
}
if (Mathf.Round(perc) == 1) {
justJump = false;
}
}
}
else
{
// Remember to reset this when you stop your character
endPos = transform.position;
collided = false;
}
This time I couldn't test the code before writting it here, so you may need to do some changes before it works.
ps: I don't think you need your firstInput variable. Once it is set to true, you never set it to false again. Also, the Input.GetButtonDown() function will only return true on the first frame a button is pressed wich is what I guess you intended when you created firstInput.
ps2: My solution added a collided boolean attribute to your class, so don't forget to add a line private bool collided; with your other class attributes. Also, read that chapter about the state machine pattern I recommended you on your other question. Creating this kind of control attribute suach as the collided boolean is not a good practice and if you had implemented a state machine this could be avoided.
Hey I had a similar problem i was using an animated model from Mixamo.com and I notices that for some strange reason the character didn't collide with boundaries despite having collider, for some reason it didn't work until i added a CharacterController to my model instead of a collider just search for the CharacterController and add it as you would add any script or rigid body to your game object.
Hope it Works XD Greetings
I created a object in unity
GameObject monsterclone =
(GameObject)Instantiate(monsterPrefab, floorPosition, Quaternion.identity);
This object should move in a wave style from a limit1 to limit2.
Then move back from limit2 to limit1.
Y position as well x position have to change in a specific way.
Vector3 nPos = mfloorPos + new Vector3(2f, 0f, 0f);
Vector3 oPos = mfloorPos + new Vector3(-2f, 0f, 0f);
How can I do it?
I can't exactly write the code without knowing more specific but i think this question is already asked any this link will help you out MOVE OBJECT as wave
EDIT:
I think the flat up and float down functionality will work for you for moving one point to another
example:
var floatup;
function Start(){
floatup = false;
}
function Update(){
if(floatup)
floatingup();
else if(!floatup)
floatingdown();
}
function floatingup(){
transform.position.y += 0.3 * Time.deltaTime;
yield WaitForSeconds(1);
floatup = false;
}
function floatingdown(){
transform.position.y -= 0.3 * Time.deltaTime;;
yield WaitForSeconds(1);
floatup = true;
}
example taken from
float amplitudeX = -25.0f;
float amplitudeY = 5.0f;
float omegaX = 0.5f;
float omegaY = 4.0f;
float index;
void Update () {
index += Time.deltaTime;
float x = amplitudeX*Mathf.Cos (omegaX*index);
float y = Mathf.Abs (amplitudeY*Mathf.Sin (omegaY*index));
if(transform.position.x > 24){
transform.eulerAngles = new Vector3(270, -90, 0);
}
if(transform.position.x < -24){
transform.eulerAngles = new Vector3(270, 90, 0);
}
transform.localPosition= new Vector3(x,y,20);
}
If this is a consitant wave and not dependant on speed I would use an animation to create a literal wave curve of the Position.Y value (much in the same principle as Ravindra Shekhawat has explained.) you can find out more about animation here.
Here is some code (untested) that you could go off. It is in c# so I hope it proves no issue with putting in to JavaScript.
bool monsterMoving = false;
void Update(){
//check monster moving to start updating position
if(monsterMoving == true){
//moving animation controls up and down "wave" movement
animation.CrossFade('moving');
//Lerp changes position
Transform.Lerp(transform.Position, oPos, Time.deltaTime);
if (transform.Position == oPos) {
//We are at destination, stop movement
monsterMoving = false;
}
} else {
// if monster stopped moving, return to idle animation (staying still)
animation.CrossFade('idle');
}
}
// function to send a new position to the monster object
void MoveTo(Vector3 newPos){
oPos = newPos;
monsterMoving = true;
}
I'm trying to script my AI on a simple way. The AI does a raycast in front, left and right of it. Then it takes a random direction in a way that doesn't contain a "Boundary"-element.
First, my Update() checks if it's time to calculate a new direction. If it is, it calculates the new direction, then it moves to that.
I'm using the following code to move:
Debug.DrawLine(transform.position, transform.position + transform.forward, Color.yellow);
Debug.DrawLine(transform.position, transform.position + transform.right, Color.yellow);
Debug.DrawLine(transform.position, transform.position - transform.right, Color.yellow);
//DEBUGS START AND END POSITION ARE CORRECT
var startTime;
if (Time.time > nextUpdate) {
Debug.Log("New check");
var dirWay = MoveDirection();
//if (dirWay == 0)
//rot = Quaternion.Euler(0, 0, 0);
if (dirWay == 1) {
rot = Quaternion.Euler(0, 90, 0);
}
if (dirWay == 2) {
rot = Quaternion.Euler(0, -90, 0);
}
if (dirWay == 3) { //backwards
rot = Quaternion.Euler(0, 180, 0);
}
nextUpdate = Time.time + walkTime; //for example, 2: Every 2 seconds an update
direction.y = 1;
direction.y = 1.5 - transform.position.y;
transform.rotation = transform.rotation * rot;
transform.position = transform.position + transform.forward + transform.forward;
//Plus 2 * transform.forward because it moves 2 places
}
The function MoveDirection checks for obstacles through raycasting. My AI moves the correct distance in the correct time, but walks through walls. That means my raycasting is wrong. I'm using the following code:
var obstacles = ["Border", "Boundary", "BoundaryFlame"];
var frontAvailable = true;
var leftAvailable = true;
var rightAvailable = true;
var hitFront: RaycastHit;
if (Physics.Raycast(transform.position, transform.position + transform.forward, hitFront, 1.9)) {
for (var i = 0; i < obstacles.length; i++)
{
if (hitFront.collider.gameObject.name.IndexOf(obstacles[i]) > -1)
{
frontAvailable = false;
}
}
}
var hitLeft: RaycastHit;
if (Physics.Raycast(transform.position, transform.position - transform.right, hitLeft, 1.9)) {
for (var j = 0; j < obstacles.length; j++)
{
if (hitLeft.collider.gameObject.name.IndexOf(obstacles[j]) > -1)
{
leftAvailable = false;
}
}
}
var hitRight: RaycastHit;
if (Physics.Raycast(transform.position, transform.position + transform.right, hitRight, 1.9)) {
for (var k = 0; k < obstacles.length; k++)
{
if (hitRight.collider.gameObject.name.IndexOf(obstacles[k]) > -1)
{
rightAvailable = false;
}
}
}
So, am I right that when I want to check 2 units in front of the AI (transform.forward from the AI's point of view, not the global view!), I should use: Physics.Raycast(transform.position, transform.position + transform.forward, hitFront, 1.9) ?
http://docs.unity3d.com/Documentation/ScriptReference/Physics.Raycast.html
So, am I right that when I want to check 2 units in front of the AI
(transform.forward from the AI's point of view, not the global view!),
I should use: Physics.Raycast(transform.position, transform.position +
transform.forward, hitFront, 1.9) ?
you should have Physics.Raycast(transform.position,transform.forward,hitFront, 1.9);