Detect Collisions with Three Objects
0
I have a block that I'm moving around the level, and I want to make it so that if it hits a corner (ex: top right boundary), it doesn't move anywhere. Regular collision detection doesn't work, because I'm having the block move in short jumps (player.transform.position.x - 1, etc).
Here is the code I'm using:
public void OnCollisionEnter2D(Collision2D collision)
{ if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "top" && GetComponent<BoxCollider2D>().tag == "left"))
{
player.canMoveUp = false;
player.canMoveDown = true;
player.canMoveLeft = false;
player.canMoveRight = true;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "top" && GetComponent<BoxCollider2D>().tag == "right"))
{
player.canMoveUp = false;
player.canMoveDown = true;
player.canMoveLeft = true;
player.canMoveRight = false;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "bottom" && GetComponent<BoxCollider2D>().tag == "left"))
{
player.canMoveUp = true;
player.canMoveDown = false;
player.canMoveLeft = false;
player.canMoveRight = true;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "bottom" && GetComponent<BoxCollider2D>().tag == "right"))
{
player.canMoveUp = true;
player.canMoveDown = false;
player.canMoveLeft = true;
player.canMoveRight = false;
}
}
public void OnCollisionExit2D(Collision2D collision)
{
Debug.Log("notTouching");
player.canMoveUp = true;
player.canMoveDown = true;
player.canMoveLeft = true;
player.canMoveRight = true;
}
EDIT: New code.
if (Input.GetKeyUp(KeyCode.LeftArrow))
{
Vector2 movementLeft = new Vector2(-1, 0);
RaycastHit2D hitLeft = Physics2D.Raycast(transform.position, movementLeft, -1);
if (hitLeft.collider && hitLeft.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementLeft.x,movementLeft.y,0);
}
}
else if (Input.GetKeyUp(KeyCode.RightArrow))
{
Vector2 movementRight = new Vector2(1, 0);
RaycastHit2D hitRight = Physics2D.Raycast(transform.position, movementRight, 1);
if (hitRight.collider && hitRight.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementRight.x, movementRight.y, 0);
}
}
else if (Input.GetKeyUp(KeyCode.DownArrow))
{
Vector2 movementDown = new Vector2(0, -1);
RaycastHit2D hitDown = Physics2D.Raycast(transform.position, movementDown, -1);
if (hitDown.collider && hitDown.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementDown.x, movementDown.y, 0);
}
}
else if (Input.GetKeyUp(KeyCode.UpArrow))
{
Vector2 movementUp = new Vector2(0, 1);
RaycastHit2D hitUp = Physics2D.Raycast(transform.position, movementUp, 1);
if (hitUp.collider && hitUp.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementUp.x, movementUp.y, 0);
}
}
else
{
Debug.Log("N/A");
}
unity3d collision-detection collider
asked Nov 16 at 2:26
Kat K
325
add a comment |
0
I have a block that I'm moving around the level, and I want to make it so that if it hits a corner (ex: top right boundary), it doesn't move anywhere. Regular collision detection doesn't work, because I'm having the block move in short jumps (player.transform.position.x - 1, etc).
Here is the code I'm using:
public void OnCollisionEnter2D(Collision2D collision)
{ if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "top" && GetComponent<BoxCollider2D>().tag == "left"))
{
player.canMoveUp = false;
player.canMoveDown = true;
player.canMoveLeft = false;
player.canMoveRight = true;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "top" && GetComponent<BoxCollider2D>().tag == "right"))
{
player.canMoveUp = false;
player.canMoveDown = true;
player.canMoveLeft = true;
player.canMoveRight = false;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "bottom" && GetComponent<BoxCollider2D>().tag == "left"))
{
player.canMoveUp = true;
player.canMoveDown = false;
player.canMoveLeft = false;
player.canMoveRight = true;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "bottom" && GetComponent<BoxCollider2D>().tag == "right"))
{
player.canMoveUp = true;
player.canMoveDown = false;
player.canMoveLeft = true;
player.canMoveRight = false;
}
}
public void OnCollisionExit2D(Collision2D collision)
{
Debug.Log("notTouching");
player.canMoveUp = true;
player.canMoveDown = true;
player.canMoveLeft = true;
player.canMoveRight = true;
}
EDIT: New code.
if (Input.GetKeyUp(KeyCode.LeftArrow))
{
Vector2 movementLeft = new Vector2(-1, 0);
RaycastHit2D hitLeft = Physics2D.Raycast(transform.position, movementLeft, -1);
if (hitLeft.collider && hitLeft.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementLeft.x,movementLeft.y,0);
}
}
else if (Input.GetKeyUp(KeyCode.RightArrow))
{
Vector2 movementRight = new Vector2(1, 0);
RaycastHit2D hitRight = Physics2D.Raycast(transform.position, movementRight, 1);
if (hitRight.collider && hitRight.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementRight.x, movementRight.y, 0);
}
}
else if (Input.GetKeyUp(KeyCode.DownArrow))
{
Vector2 movementDown = new Vector2(0, -1);
RaycastHit2D hitDown = Physics2D.Raycast(transform.position, movementDown, -1);
if (hitDown.collider && hitDown.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementDown.x, movementDown.y, 0);
}
}
else if (Input.GetKeyUp(KeyCode.UpArrow))
{
Vector2 movementUp = new Vector2(0, 1);
RaycastHit2D hitUp = Physics2D.Raycast(transform.position, movementUp, 1);
if (hitUp.collider && hitUp.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementUp.x, movementUp.y, 0);
}
}
else
{
Debug.Log("N/A");
}
unity3d collision-detection collider
asked Nov 16 at 2:26
Kat K
325
add a comment |
0
0
0
I have a block that I'm moving around the level, and I want to make it so that if it hits a corner (ex: top right boundary), it doesn't move anywhere. Regular collision detection doesn't work, because I'm having the block move in short jumps (player.transform.position.x - 1, etc).
Here is the code I'm using:
public void OnCollisionEnter2D(Collision2D collision)
{ if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "top" && GetComponent<BoxCollider2D>().tag == "left"))
{
player.canMoveUp = false;
player.canMoveDown = true;
player.canMoveLeft = false;
player.canMoveRight = true;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "top" && GetComponent<BoxCollider2D>().tag == "right"))
{
player.canMoveUp = false;
player.canMoveDown = true;
player.canMoveLeft = true;
player.canMoveRight = false;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "bottom" && GetComponent<BoxCollider2D>().tag == "left"))
{
player.canMoveUp = true;
player.canMoveDown = false;
player.canMoveLeft = false;
player.canMoveRight = true;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "bottom" && GetComponent<BoxCollider2D>().tag == "right"))
{
player.canMoveUp = true;
player.canMoveDown = false;
player.canMoveLeft = true;
player.canMoveRight = false;
}
}
public void OnCollisionExit2D(Collision2D collision)
{
Debug.Log("notTouching");
player.canMoveUp = true;
player.canMoveDown = true;
player.canMoveLeft = true;
player.canMoveRight = true;
}
EDIT: New code.
if (Input.GetKeyUp(KeyCode.LeftArrow))
{
Vector2 movementLeft = new Vector2(-1, 0);
RaycastHit2D hitLeft = Physics2D.Raycast(transform.position, movementLeft, -1);
if (hitLeft.collider && hitLeft.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementLeft.x,movementLeft.y,0);
}
}
else if (Input.GetKeyUp(KeyCode.RightArrow))
{
Vector2 movementRight = new Vector2(1, 0);
RaycastHit2D hitRight = Physics2D.Raycast(transform.position, movementRight, 1);
if (hitRight.collider && hitRight.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementRight.x, movementRight.y, 0);
}
}
else if (Input.GetKeyUp(KeyCode.DownArrow))
{
Vector2 movementDown = new Vector2(0, -1);
RaycastHit2D hitDown = Physics2D.Raycast(transform.position, movementDown, -1);
if (hitDown.collider && hitDown.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementDown.x, movementDown.y, 0);
}
}
else if (Input.GetKeyUp(KeyCode.UpArrow))
{
Vector2 movementUp = new Vector2(0, 1);
RaycastHit2D hitUp = Physics2D.Raycast(transform.position, movementUp, 1);
if (hitUp.collider && hitUp.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementUp.x, movementUp.y, 0);
}
}
else
{
Debug.Log("N/A");
}
unity3d collision-detection collider
asked Nov 16 at 2:26
Kat K
325
I have a block that I'm moving around the level, and I want to make it so that if it hits a corner (ex: top right boundary), it doesn't move anywhere. Regular collision detection doesn't work, because I'm having the block move in short jumps (player.transform.position.x - 1, etc).
Here is the code I'm using:
public void OnCollisionEnter2D(Collision2D collision)
{ if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "top" && GetComponent<BoxCollider2D>().tag == "left"))
{
player.canMoveUp = false;
player.canMoveDown = true;
player.canMoveLeft = false;
player.canMoveRight = true;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "top" && GetComponent<BoxCollider2D>().tag == "right"))
{
player.canMoveUp = false;
player.canMoveDown = true;
player.canMoveLeft = true;
player.canMoveRight = false;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "bottom" && GetComponent<BoxCollider2D>().tag == "left"))
{
player.canMoveUp = true;
player.canMoveDown = false;
player.canMoveLeft = false;
player.canMoveRight = true;
}
else if (collision.gameObject.tag == "barrier" && (GetComponent<BoxCollider2D>().tag == "bottom" && GetComponent<BoxCollider2D>().tag == "right"))
{
player.canMoveUp = true;
player.canMoveDown = false;
player.canMoveLeft = true;
player.canMoveRight = false;
}
}
public void OnCollisionExit2D(Collision2D collision)
{
Debug.Log("notTouching");
player.canMoveUp = true;
player.canMoveDown = true;
player.canMoveLeft = true;
player.canMoveRight = true;
}
EDIT: New code.
if (Input.GetKeyUp(KeyCode.LeftArrow))
{
Vector2 movementLeft = new Vector2(-1, 0);
RaycastHit2D hitLeft = Physics2D.Raycast(transform.position, movementLeft, -1);
if (hitLeft.collider && hitLeft.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementLeft.x,movementLeft.y,0);
}
}
else if (Input.GetKeyUp(KeyCode.RightArrow))
{
Vector2 movementRight = new Vector2(1, 0);
RaycastHit2D hitRight = Physics2D.Raycast(transform.position, movementRight, 1);
if (hitRight.collider && hitRight.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementRight.x, movementRight.y, 0);
}
}
else if (Input.GetKeyUp(KeyCode.DownArrow))
{
Vector2 movementDown = new Vector2(0, -1);
RaycastHit2D hitDown = Physics2D.Raycast(transform.position, movementDown, -1);
if (hitDown.collider && hitDown.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementDown.x, movementDown.y, 0);
}
}
else if (Input.GetKeyUp(KeyCode.UpArrow))
{
Vector2 movementUp = new Vector2(0, 1);
RaycastHit2D hitUp = Physics2D.Raycast(transform.position, movementUp, 1);
if (hitUp.collider && hitUp.collider.gameObject.tag == "barrier")
{
Debug.Log("N/A");
}
else
{
player.transform.position += new Vector3(movementUp.x, movementUp.y, 0);
}
}
else
{
Debug.Log("N/A");
}
unity3d collision-detection collider
unity3d collision-detection collider
asked Nov 16 at 2:26
Kat K
325
asked Nov 16 at 2:26
Kat K
325
edited Nov 16 at 5:24
asked Nov 16 at 2:26
Kat K
325
asked Nov 16 at 2:26
Kat K
325
asked Nov 16 at 2:26
Kat K
325
325
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
0
A more simpler solution would be to use Physics.Raycast2D to check if theres any block in the way of your movement before moving it.
This is rough idea of the code:
// Some code to get input and end up with a movement vector
...
movement = new Vector2(1, 0);
// Raycast in the direction of movement with a distance of 1.
RaycastHit2D hit = Physics2D.Raycast(transform.position, movement, 1);
// We hit something and its a barrier
if (hit.collider && hit.collider.gameobject.tag == "barrier")
{
// Don't move, play sound that indicate you hit a barrier or some sort
}
else
{
// Move to the new position
transform.position += new Vector3(movement.x, movement.y, 0);
}
answered Nov 16 at 3:05
SwiftingDuster
847315
It seems to be throwing an error at the 'gameobject' in 'hit.gameobject.tag'. I have tried both versions of gameobject (GameObject and gameObject) but it doesn't like either of those.
– Kat K
Nov 16 at 3:24
I've updated the answer. Tryhit.collider.gameObject.tag
– SwiftingDuster
Nov 16 at 3:42
now I'm getting an error on 'player.transform.position += movement'. I tried taking out the 'player.', and it was still unhappy. I've also tried '(Vector2)player.transform.position', but that didn't work either.
– Kat K
Nov 16 at 3:54
My bad. That's because its trying to add a Vector2 and Vector3 together.
– SwiftingDuster
Nov 16 at 3:58
I'm not getting any more errors, but the boxes are still clipping through the boundaries. I posted what my current code looks like up in the ask, if you don't mind taking a look?
– Kat K
Nov 16 at 5:25
|
show 1 more comment
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
A more simpler solution would be to use Physics.Raycast2D to check if theres any block in the way of your movement before moving it.
This is rough idea of the code:
// Some code to get input and end up with a movement vector
...
movement = new Vector2(1, 0);
// Raycast in the direction of movement with a distance of 1.
RaycastHit2D hit = Physics2D.Raycast(transform.position, movement, 1);
// We hit something and its a barrier
if (hit.collider && hit.collider.gameobject.tag == "barrier")
{
// Don't move, play sound that indicate you hit a barrier or some sort
}
else
{
// Move to the new position
transform.position += new Vector3(movement.x, movement.y, 0);
}
answered Nov 16 at 3:05
SwiftingDuster
847315
It seems to be throwing an error at the 'gameobject' in 'hit.gameobject.tag'. I have tried both versions of gameobject (GameObject and gameObject) but it doesn't like either of those.
– Kat K
Nov 16 at 3:24
I've updated the answer. Tryhit.collider.gameObject.tag
– SwiftingDuster
Nov 16 at 3:42
now I'm getting an error on 'player.transform.position += movement'. I tried taking out the 'player.', and it was still unhappy. I've also tried '(Vector2)player.transform.position', but that didn't work either.
– Kat K
Nov 16 at 3:54
My bad. That's because its trying to add a Vector2 and Vector3 together.
– SwiftingDuster
Nov 16 at 3:58
I'm not getting any more errors, but the boxes are still clipping through the boundaries. I posted what my current code looks like up in the ask, if you don't mind taking a look?
– Kat K
Nov 16 at 5:25
|
show 1 more comment
0
A more simpler solution would be to use Physics.Raycast2D to check if theres any block in the way of your movement before moving it.
This is rough idea of the code:
// Some code to get input and end up with a movement vector
...
movement = new Vector2(1, 0);
// Raycast in the direction of movement with a distance of 1.
RaycastHit2D hit = Physics2D.Raycast(transform.position, movement, 1);
// We hit something and its a barrier
if (hit.collider && hit.collider.gameobject.tag == "barrier")
{
// Don't move, play sound that indicate you hit a barrier or some sort
}
else
{
// Move to the new position
transform.position += new Vector3(movement.x, movement.y, 0);
}
answered Nov 16 at 3:05
SwiftingDuster
847315
It seems to be throwing an error at the 'gameobject' in 'hit.gameobject.tag'. I have tried both versions of gameobject (GameObject and gameObject) but it doesn't like either of those.
– Kat K
Nov 16 at 3:24
I've updated the answer. Tryhit.collider.gameObject.tag
– SwiftingDuster
Nov 16 at 3:42
now I'm getting an error on 'player.transform.position += movement'. I tried taking out the 'player.', and it was still unhappy. I've also tried '(Vector2)player.transform.position', but that didn't work either.
– Kat K
Nov 16 at 3:54
My bad. That's because its trying to add a Vector2 and Vector3 together.
– SwiftingDuster
Nov 16 at 3:58
I'm not getting any more errors, but the boxes are still clipping through the boundaries. I posted what my current code looks like up in the ask, if you don't mind taking a look?
– Kat K
Nov 16 at 5:25
|
show 1 more comment
0
0
0
A more simpler solution would be to use Physics.Raycast2D to check if theres any block in the way of your movement before moving it.
This is rough idea of the code:
// Some code to get input and end up with a movement vector
...
movement = new Vector2(1, 0);
// Raycast in the direction of movement with a distance of 1.
RaycastHit2D hit = Physics2D.Raycast(transform.position, movement, 1);
// We hit something and its a barrier
if (hit.collider && hit.collider.gameobject.tag == "barrier")
{
// Don't move, play sound that indicate you hit a barrier or some sort
}
else
{
// Move to the new position
transform.position += new Vector3(movement.x, movement.y, 0);
}
answered Nov 16 at 3:05
SwiftingDuster
847315
A more simpler solution would be to use Physics.Raycast2D to check if theres any block in the way of your movement before moving it.
This is rough idea of the code:
// Some code to get input and end up with a movement vector
...
movement = new Vector2(1, 0);
// Raycast in the direction of movement with a distance of 1.
RaycastHit2D hit = Physics2D.Raycast(transform.position, movement, 1);
// We hit something and its a barrier
if (hit.collider && hit.collider.gameobject.tag == "barrier")
{
// Don't move, play sound that indicate you hit a barrier or some sort
}
else
{
// Move to the new position
transform.position += new Vector3(movement.x, movement.y, 0);
}
answered Nov 16 at 3:05
SwiftingDuster
847315
edited Nov 16 at 3:57
answered Nov 16 at 3:05
SwiftingDuster
847315
answered Nov 16 at 3:05
SwiftingDuster
847315
answered Nov 16 at 3:05
SwiftingDuster
847315
847315
It seems to be throwing an error at the 'gameobject' in 'hit.gameobject.tag'. I have tried both versions of gameobject (GameObject and gameObject) but it doesn't like either of those.
– Kat K
Nov 16 at 3:24
I've updated the answer. Tryhit.collider.gameObject.tag
– SwiftingDuster
Nov 16 at 3:42
now I'm getting an error on 'player.transform.position += movement'. I tried taking out the 'player.', and it was still unhappy. I've also tried '(Vector2)player.transform.position', but that didn't work either.
– Kat K
Nov 16 at 3:54
My bad. That's because its trying to add a Vector2 and Vector3 together.
– SwiftingDuster
Nov 16 at 3:58
I'm not getting any more errors, but the boxes are still clipping through the boundaries. I posted what my current code looks like up in the ask, if you don't mind taking a look?
– Kat K
Nov 16 at 5:25
|
show 1 more comment
It seems to be throwing an error at the 'gameobject' in 'hit.gameobject.tag'. I have tried both versions of gameobject (GameObject and gameObject) but it doesn't like either of those.
– Kat K
Nov 16 at 3:24
I've updated the answer. Tryhit.collider.gameObject.tag
– SwiftingDuster
Nov 16 at 3:42
now I'm getting an error on 'player.transform.position += movement'. I tried taking out the 'player.', and it was still unhappy. I've also tried '(Vector2)player.transform.position', but that didn't work either.
– Kat K
Nov 16 at 3:54
My bad. That's because its trying to add a Vector2 and Vector3 together.
– SwiftingDuster
Nov 16 at 3:58
I'm not getting any more errors, but the boxes are still clipping through the boundaries. I posted what my current code looks like up in the ask, if you don't mind taking a look?
– Kat K
Nov 16 at 5:25
It seems to be throwing an error at the 'gameobject' in 'hit.gameobject.tag'. I have tried both versions of gameobject (GameObject and gameObject) but it doesn't like either of those.
– Kat K
Nov 16 at 3:24
It seems to be throwing an error at the 'gameobject' in 'hit.gameobject.tag'. I have tried both versions of gameobject (GameObject and gameObject) but it doesn't like either of those.
– Kat K
Nov 16 at 3:24
I've updated the answer. Try
hit.collider.gameObject.tag– SwiftingDuster
Nov 16 at 3:42
I've updated the answer. Try
hit.collider.gameObject.tag– SwiftingDuster
Nov 16 at 3:42
now I'm getting an error on 'player.transform.position += movement'. I tried taking out the 'player.', and it was still unhappy. I've also tried '(Vector2)player.transform.position', but that didn't work either.
– Kat K
Nov 16 at 3:54
now I'm getting an error on 'player.transform.position += movement'. I tried taking out the 'player.', and it was still unhappy. I've also tried '(Vector2)player.transform.position', but that didn't work either.
– Kat K
Nov 16 at 3:54
My bad. That's because its trying to add a Vector2 and Vector3 together.
– SwiftingDuster
Nov 16 at 3:58
My bad. That's because its trying to add a Vector2 and Vector3 together.
– SwiftingDuster
Nov 16 at 3:58
I'm not getting any more errors, but the boxes are still clipping through the boundaries. I posted what my current code looks like up in the ask, if you don't mind taking a look?
– Kat K
Nov 16 at 5:25
I'm not getting any more errors, but the boxes are still clipping through the boundaries. I posted what my current code looks like up in the ask, if you don't mind taking a look?
– Kat K
Nov 16 at 5:25
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