what I want to achieve is showing a sprite when the screen is touched by the player and make it disappear when a character reached the sprite's position, I made a pic to picture my words if I was not clear :
Thanks for your help
To add previous answer:
you should raycast from you touch position:
void Update()
{
Ray raycast = Camera.main.ScreenPointToRay(Input.GetTouch(0).position);
RaycastHit raycastHit;
if (Physics.Raycast(raycast, out raycastHit))
{
if (raycastHit.transform.GetComponent<BoxCollider2D>())
{
sprite.SetActive(false);
}
}
}
1) To show sprite use
if (Input.touchCount > 0)
{ gameObjectToShow.SetActive(true); }
2) To disapper it: add Collider to gameObjectToShow (2D Box or Circle), make it trigger, increase radius of that Collider and use OnTriggerEnter with gameObjectToShow.SetActive(false);
Related
Im trying to make a 2d platformer-like game, and when it comes to projectiles they kinda follow the player movement. If I shoot in the right direction and I move to the left, the projectile will change its position and start moving to the left from the GameObject assigned as "gun". The "gun" is a child of the player so I always shoot from the same position.
Edit:
Here is the code for shooting:
Edit2: if() statements are for ammo
void OnFire(InputValue value)
{
if(kopanScore.kopanNumber > 0)
{
Instantiate(projectile, projectileSpawn);
kopanScore.MinusKopanScore();
}
else if(kopanScore.kopanNumber <= 0)
{
return;
}
}
I have a Gameobject called ball and another called floor. As can be seen in the code, when the ball hits the floor, a printout shall be made.
void OnCollisionEnter2D(Collision2D collision)
{
bg = GameObject.Find(bg_name);
if (collision.gameObject.tag == "floor")
{
//bg.GetComponent<ControlGame>().deleteBall();
//bg.GetComponent<ControlGame>().recreateBall();
print("Ball hit floor");
}
if (collision.gameObject.tag == "rope")
{
bg.GetComponent<ControlGame>().ToggleIsShot(false);
}
}
The problem is that I have moved the floor now, such that the ball and the floor has different depth. Still, the printout is made although the two Gameobjects are not touching. See the screenshots below:
The print is in the lower left corner. Why is that?
According to the comment below, the z-value does not have an effect. But I have also a collision detector for the rope, which is a Bezier-curve with an EdgeCollider2D attached to it. When the rope passes the floor, nothing is triggered in onCollisionEnter2D.
void OnCollisionEnter2D(Collision2D collision)
{
bg = GameObject.Find(bg_name);
if (collision.gameObject.tag == "floor")
{
print("floor collision");
bg.GetComponent<ControlGame>().ShootBall();
}
}
Well, these are Collider2D.
You only changed the Z (depth) position of the floor which basically is completely ignored in a 2D game / by 2D physics.
As you can also see in the GameView for the Physics 2D the objects are still aligned and colliding.
Why isn't it also working for collision between rope and floor?
Please checkout the Collision Action Matrix for which collisions/trigger can be detected.
→ At least one of the objects has to be a Rigidbody2D.
If the rope is e.g. moved by script then it has to be a Kinematic → in this case also the floor would need to be a Rigidbody2D and not Kinematic.
The reason I guess it worked just fine for the ball is because it already is a non-kinematic Rigidbody2D so able to detect collisions with static colliders.
Hi I'm trying to get my camera to follow my player (Sphere) when ever it moves around. I have got the camera to follow the player, but when the sphere spins, so do the camera. That is not what i'm looking for. I need the camera to stay put on the sphere and rotate when I turn. This is my code so far:
EDIT: What I'm looking for is something like you see in the vid. where the camera rotate when the sphere is turning, so it's behind it all the time. https://www.youtube.com/watch?v=jPAgPQi1l0c
using UnityEngine;
using System.Collections;
public class TransformFollower : MonoBehaviour
{
[SerializeField]
private Transform target;
[SerializeField]
private Vector3 offsetPosition;
[SerializeField]
private Space offsetPositionSpace = Space.Self;
[SerializeField]
private bool lookAt = true;
private void Start()
{
offsetPosition = new Vector3(-3, -2, 0);
}
private void Update()
{
Refresh();
}
public void Refresh()
{
if (target == null)
{
Debug.LogWarning("Missing target ref !", this);
return;
}
// compute position
if (offsetPositionSpace == Space.Self)
{
transform.position = target.TransformPoint(offsetPosition);
}
else
{
transform.position = target.position + offsetPosition;
}
// compute rotation
if (lookAt)
{
transform.LookAt(target);
}
else
{
transform.rotation = target.rotation;
}
}
}
You should implement the following logic:
Create an empty gameObject:Character, where it will have as childs: Camera, Sphere
when you move, you simply transform the Character, so the Camera and the Sphere transform in the exact same way.
Now, when you want to rotate only the Sphere, but not the camera, just apply your rotation(or anything else), only in the sphere.
To do so, in your script you can pass the Character and the Sphere.
So moving transformations will be applied in on the Character and any custom move, only in the sphere.
Nik
Did you write this code yourself?
It simply seems that if lookat is true, it will do what you want. If it is false, if will do what you describe.
Just look in the editor and check the 'look at' box.
If you never want to use it you can remove it from the code by removing the lookat variable and replacing
// compute rotation
if (lookAt)
{
transform.LookAt(target);
}
else
{
transform.rotation = target.rotation;
}
by
// compute rotation
transform.LookAt(target);
EDIT more explanation:
In your code, you have two options: lookat and offsetPositionSpace.
Basically, offsetPositionSpace can be two values:
Self -> The camera will always be behind the player (if you rotate the player, it moves to stay behind
World -> The camera will always imitate the player's moves (If the player rotates, the camera won't move
LookAt can also have two values
true -> the camera looks at the player, always
false -> the camera imitate the players rotation (if the player rotates, the camera does the same and stops looking at the player)
I have made a gameobject together with some children gameobject to represent the information to show up when specific circumstances occurred.
I have already ajusted the position of the information gameobject(together with its' children) in the cameraarea. The thing is that I want to move the gameobject(together with its' children) out of the camera, maybe on top or maybe on left. Following is the scratch to demonstrate the position I want to put it:
So that I could move the information gameobject and its' children (Red box) with some movement effect when needed, I have no problem with moving it back but could find an elegant way to move it out of the camera when the game started.
Mostly because I don't know how to calculate the position out of the camera.
Maybe find the upper border of the camera and the size of the gameobject and its children?
I know I could do this by maybe add a marker gameobject to represent the downer border of the information gameobject, and move it until it's not visible, but is there a more elegant way?
Any ideas?
For this one, I would use the following trick: use any method (animation, coroutine, Update method...) to move your item out of screen the way you desire. Then you can use the OnBecameInvisible event which is called when the item does not need to be rendered on any camera anymore. The event will there be used to detect that the parent object moved out of screen, and that you want to stop the current movement. You then just need to define in this event that you want to stop the current moving behavior, and you will be done.
void OnBecameInvisible() {
// Stop moving coroutine, moving in Update or current animation.
}
There are probably more elegant ways of doing it as you said, but I think this method should be enough for what you want to achieve.
It took me time, but I found this way for you, attach this script to your gameObject:
public Renderer rend;
//drag the camera to the script in the inspector
public Camera camera1;
Vector3 bottomleft;
Vector3 topright;
void Start()
{
rend = GetComponent<Renderer>();
//the top-right point of the camera bounds
topright= camera1.ViewportToWorldPoint(new Vector3(0, 0, transform.position.z));
//the bottom-left point of the camera bounds
bottomleft = camera1.ViewportToWorldPoint(new Vector3(1, 1, transform.position.z));
StartCoroutine(MoveUp());
}
IEnumerator MoveUp()
{
//while the position and the height are lower that the Y of top right
while (transform.position.y + rend.bounds.size.y < topright.y)
{
//move the object to the new position (move it up)
transform.position = new Vector3(transform.position.x, transform.position.y + .01f, transform.position.z);
//and wait for 1/100 of a second
yield return new WaitForSecondsRealtime(.001f);
}
}
you can play with the WaitForSecondsRealtime value to change the velocity of moving.
I have just started unity. I have 4 Images(sprites) aligned in a grid. Now i want to move an image to a target position as soon as I touch the image. How can i do that?
I wrote the following code for move:
void Update () {
float step=speed*Time.deltaTime;
transform.position=Vector3.MoveTowards(transform.position,target.position,step);
}
I just don't know to move that particular sprite on which I touch.
Thanks
From http://answers.unity3d.com/questions/420808/how-to-get-position-of-touch-on-touch-screen.html
fingerPos = Input.GetTouch(0).position;
Vector3 pos = fingerPos;
pos.z = transform.position.z;
// simplified check
if (transform.position == Camera.main.ScreenToWorldPoint(pos))
{
// move towards the target as you want
}
Notice that i kept it brief with that if, but, of course, you should check if the touch position is withing the boundaries of your object.