collider.md

title	category	layout	tags	prism_languages
GameObject collisions	Events	2017/sheet	Featured	csharp

Collider 666666677777777

| OnColl­isi­onE­nte­r2D | Called when this collid­er/­rig­idbody has begun touching another rigidb­ody­/co­llider | | OnColl­isi­onE­xit2D | Called when this collid­er/­rig­idbody has stopped touching another rigidb­ody­/co­llider. | | OnTrig­ger­Ent­er2D | Called when this Collider other enters a trigger Collider. | | OnTrig­ger­Exi­t2D | Called when this Collider other has stopped touching a trigger collider. | | isTrigger | Triggers collision without physics | | Physic­s.R­aycast | Checks if there are colliders in a line |

RigidBody

| isKine­matic | Controls whether physics affects the rigidbody. | | useGravity | Controls whether gravity affects this rigidbody. | | addForce | Applies a force of a vector to the rigidbody | | AddTorque | Adds torque to the rigidbody |

Usage

/* Both objects have to have a Collider and one object has to have a Rigidbody for these Events to work */
private void OnCollisionEnter(Collision hit) {    
  Debug.Log(gameObject.name + " hits " + hit.gameObject.name); 
}
private void OnCollisionStay(Collision hit) {  
  Debug.Log(gameObject.name + " is hitting " + hit.gameObject.name); 
}
private void OnCollisionExit(Collision hit) { 
  Debug.Log(gameObject.name + " stopped hitting " + hit.gameObject.name); 
}

// Trigger must be checked on one of the Colliders
private void OnTriggerEnter(Collider hit) {    
  Debug.Log(gameObject.name + " just hit " + hit.name); 
}
private void OnTriggerStay(Collider hit) { 
  Debug.Log(gameObject.name + " is hitting " + hit.name); 
}
private void OnTriggerExit(Collider hit) { 
  Debug.Log(gameObject.name + " stopped hitting " + hit.name); 
}
 
// For 2D Colliders
private void OnCollisionEnter2D(Collision2D hit) { }
private void OnCollisionStay2D(Collision2D hit) { }
private void OnCollisionExit2D(Collision2D hit) { }
private void OnTriggerEnter2D(Collider2D hit) { }
private void OnTriggerStay2D(Collider2D hit) { }
private void OnTriggerExit2D(Collider2D hit) { }

// Ray casting to detect the collision
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
RaycastHit hit;
if (Physics.Raycast(ray, out hit, 100)){
  Debug.DrawLine(ray.origin, hit.point);
  Debug.Log("Hit: " + hit.collider.name);
}