Placing objects on top of each other problem (solved)

OK, so I need to be able to place objects on top of other objects with raycasting. I am able to place an object on top of the first object, but I cant place an object an object on top of the second object.

Place where object is instantiated

Code (CSharp):

1.  
2. if(Input.GetKeyDown(KeyCode.Mouse1) && logs != 0) {
3.                 if(logDirection == false) { // logDirection is a bool because I would be able to toggle it
4.                     Instantiate(logUp,logPlacePos,Quaternion.identity);
5.                     logs--;
6.                 }
7.                 if(logDirection == true) {
8.                     Instantiate(logSide,new Vector3(logPlacePos.x,logPlacePos.y+1,logPlacePos.z),Quaternion.Euler(0, gameObject.transform.eulerAngles.y, 0)); // gameObject.transform.eulerAngles.y is so the object is rotated like the player, logSide is a 90 degree rotated log, logUp is a log that stands up.
9.                     logs--;
10.                 }
11.             }
12.  

Raycasting script

Code (CSharp):

1.  
2. public class Raycasting : MonoBehaviour {
3.    
4.     public Vector3 pos;
5.     public Camera camera;
6.     float MaxDistance = 20;
7.  
8.     // Use this for initialization
9.     void Start () {
10.        
11.     }
12.    
13.     // Update is called once per frame
14.     void FixedUpdate () {
15.         Ray ray = camera.ScreenPointToRay(Input.mousePosition);
16.         RaycastHit hit;
17.         if(Physics.Raycast(camera.transform.position,camera.transform.forward,out hit,MaxDistance)) {
18.             if(hit.transform.name == "Terrain") {
19.                 print(hit.point);
20.                 pos = hit.point;
21.             }
22.         }
23.     }
24. }
25.  

Freeze object script (This is because sometimes the object falls, so when it hits the ground, it freezes in place. The logs have a collider under them that detects if it hit something. "rb" is a "public Rigidbody rb")

Code (CSharp):

1.  
2. void OnTriggerEnter (Collider col){
3.         if(col.gameObject.tag != "Player") { // to make sure it doesnt freeze on top of the player
4.             rb.constraints = RigidbodyConstraints.FreezePositionY | RigidbodyConstraints.FreezePositionX | RigidbodyConstraints.FreezePositionZ | RigidbodyConstraints.FreezeRotationY | RigidbodyConstraints.FreezeRotationZ | RigidbodyConstraints.FreezeRotationX;
5.            
6.         }
7.     }
8.  

 

What happens when you try?

 

It would like go inside of the second object, but you would still see it. Either that or it went behind the logs.

 

I don't know if it's the problem, but you do realise that the logPlacePos doesn't increase when you say logPlacePos.y+1

it doesn't increase the y value, it spits out the y value +1.

you need to add logPlacePos.y += 1 before/after the instatiating call.

Code (CSharp):

1.  Instantiate(logSide,new Vector3(logPlacePos.x,logPlacePos.y+1,logPlacePos.z),Quaternion.Euler(0, gameObject.transform.eulerAngles.y, 0)); // gameObject.transform.eulerAngles.y is so the object is rotated like the player, logSide is a 90 degree rotated log, logUp is a log that stands up.
2.                     logs--;

 

i use y+1 because the object will otherwise be half in the terrain, and does not affect anything of this matter.

The point of the game is to place the logs where ever in a 3d world, and stack them to make a house...

 

bump

 

sorry to bump again, but i really need help

 

Your casting your ray into the scene and spawning the game object at that location pointed to by the camera.

What you need to do is find out if there is something above the point hit by the camera ray.

I would suggest after you get the camera ray intersection point you use a box/sphere/capsule overlap test to see if there is something blocking the creation of the next block. If there is, do a loop that checks for an intersection with thr overlap volume again a few units above that one, and keep doing it until space is found for the object, or max iterations is reached.

 

oh ok, thanks!!