I'm making a 2D game, there is one player with two collider : a box collider 2D on top and a small circle collider 2D bottom. When the player jump on the box he will be ok, but when he collide with the box with his face(box collider 2D) he will die ? How can I do that? I tried the following code , but it not work. Please help me.Thanks!
if (GetComponent<Collider2D>().GetType() == typeof(BoxCollider2D))
{
//do something
}
if (GetComponent<Collider2D>().GetType() == typeof(CircleCollider2D))
{
//do something
}
If you want to get a certain BoxCollider, you can use GetComponent<BoxCollider2D>() and GetComponent<CircleCollider2D>()
However, I am not sure how to take this information and check which one fired the the OnCollisionEnter, unless you set one collider to a trigger, and use OnTriggerEnter for one, and OnCollisionEnter for the other.
What I would recommend is having two child game objects on the player and put both colliders on each game object, and handle each event in their own OnCollisonEnter
Related
I had this working just fine until I decided I wanted to change how I organized the colliders just a few minutes ago to avoid having multiple colliders on the same object.
I have a "Player" object with a boxCollider2d with isTrigger=false and an empty child called "triggers" which itself has 2 children, each with a single boxCollider2d and both with isTrigger=true. These triggers are used for detecting when the player is grounded or next to a wall but are not supposed to affect the physics.
I also have a "floor" object which has a sprite and an empty child called "colliders" which has a single child called "ground" with a single boxCollider2d (isTrigger=false) and the layer of the object set to "Ground".
My understanding is that since my player has a non-trigger collider (and rigidbody) and the floor has a non-trigger collider (at least its child does), that the character shouldn't pass through the floor. Also, it's starting from a height above the ground so it's not an intersection problem.
My best guess is that somehow the child colliders of the player being triggers are turning the main collider into a trigger or that for some reason the floor collider being in a child is screwing with it, but I don't know enough about how these colliders work to really know.
The child trigger colliders should not cause it to mess up like that.
Check Project Settings -> Physics 2D -> Layer Collision Matrix. Are your objects not able to collide?
I wanted to make a shot with a particle system and if one of the particles collides with something, then the opponent should get damage. I use the trigger function because I want the particles to continue flying after colliding. And in case you are wondering why I don't use a raycast: if I work with a raycast, the opponent gets harm without the particles arriving.
My Code:
private void OnParticleTrigger()
{
if (!hitObjects.Contains(other.gameObject))
{
other.GetComponent<IDamageable>().GetDamage(PlayerScript.instance.damage);
hitObjects.Add(other.gameObject);
}
}
where I would like to have the opponent's collider later, I have already inserted "other"
Make the projectile a game object with a child particle system that gets triggered once the projectile hits a target
I am learning to create a simple fps game in unity the problem is that the collision does not update itself for example initially when my player is on the ground console prints "floor" by "Debug.log(collision.gameObject)" but when it intersects other objects such as a cube console will print out "cube" but when I walk away from it , console does not change back to "floor" Why????
I am using transform.translate to move and jump and using method OnCollisionEnter for collision detection
OnCollisionEnter is triggered only when object enters the collider.
A) Make a list of all encountered objects by adding them when OnCollisionEnter happens and removing when OnCollisionExit happens. Then whenever you need to make sure you are on "floor" check it in the list.
B) Use OnCollisionStay and every frame you will be notified if you are touching the "floor".
Remember one thing, the other object you want to collide with need to have a collider component asigned, make sure of it. Join this with the previous answer.
I recommend to verify collision.
Here on simple example:
void OnCollisionEnter (Collision col){
if (col.gameObject){
Debug.Log("Object name : "+ col.gameObject.name);
}
}
I have a prefab NPC which has a physics rig attached to it (to do some specific rag-doll stuff with). I need to avoid the various colliders on the same rig (arms, legs etc) from colliding with each other, but they have to be able to collide with the rigs of other instantiated NPCs.
Is there a way to do this? I know I can avoid all the colliders from colliding by putting them on a separate layer, but I cant create a new layer for every NPC.
Thanks
You can do by setting up IgnoreCollision on your NPC class if you have any
http://docs.unity3d.com/ScriptReference/Physics.IgnoreCollision.html
So simple loop through all colliders in the rig and set up to ignore each other
void Start() {
colliders = GetComponentsInChildren<Collider>();
foreach(Collider collider in colliders) {
otherColliders = GetComponentsInChildren<Collider>();
foreach(Collider otherColider in otherColliders) {
if (collider != otherColider) {
Physics.IgnoreCollision(collider, otherColider);
}
}
}
}
It looks like the only way to ignore collisions without using layers is to use Physics.IgnoreCollision() between a pair of colliders, for each pair.
You can write some code that would automatically register a newly instantiated game object and create these pairs between the new object and the other ones that were registered before, so you wouldn't need to call this method for each pair yourself.
Or, you can use this code that does that for you :) It has its own representation of layer to control how the objects should ignore each other.
I am making one unity game in which two objects having collider in which I have select isTriger and does not have rigid body, if I put the rigid body then they are kinematic object, So that gravity did not effect on that object, Even also i don't want any physic operation on this object also. but I want to detect whether this two object collide which each other or not.
How can I do this ?
When 2 colliders make contact with each other,
OnCollisionEnter2D
OnCollisionExit2D
OnCollisionStay2D
are called for 2D games, likewise for 3D(remove 2D in names) also.
Check out this link: http://docs.unity3d.com/ScriptReference/MonoBehaviour.OnCollisionEnter2D.html
Sorry man, but unity use the phsysics engine to detect collision so you have to add the rigidbody to the item you want to to plug the script.
PS:remeber if you want to detect collisions with Trigger collider, you need to use
void OnTriggerEnter(){
//your code
}
void OnTriggerStay(){
//your code
}
void OnTriggerLeave(){
//your code
}