Rotation of multiple cubes!

Question

Hello there!

I have one big problem, and i can't solve it, i never work with 3D before, i come from cocos2D iPhone and Actionscript 3 Flash! So, the things i need help over there can be realy simple to someone to know 3D, but its killing me!

I have one big cube with many cubes inside then, like that: Cube Example

To create then i make this code:

void createSphere () {

     float startX = -2.5f;
     float startY = -2.5f;
     float startZ = 8f;

     for(int y = 0; y &lt; 6 ; y++)
     {
          for (int z = 0; z &lt; 6; z++) 
          {
             for ( int x = 0; x &lt; 6; x++) 
             {
                 GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);

                 cube.transform.position = new Vector3(x+(0.1f*x)+startX,y+(0.1f*y)+startY z+(0.1f*z)+startZ);

                 int rand = Random.Range(1,4);

                 switch(rand)
                 {
                     case 1:
                         cube.transform.renderer.material.color = Color.red;
                     break;
                     case 2:
                         cube.transform.renderer.material.color = Color.blue;
                     break;
                     case 3:
                         cube.transform.renderer.material.color = Color.green;
                     break;
                 }

             }
          }
     }
 }

What i want to do, is detect when use make a slice over iPhone screen! And make the all cube rotate around itself:

Detect the side of slide:

if(Input.GetMouseButtonDown(0)) { lastMousePos = Input.mousePosition; actualMousePos = Input.mousePosition; press = true; } if(press) {

         if(actualMousePos.x &gt; (lastMousePos.x + 20f))
         {
             cubesHolder.transform.RotateAround(Vector3.up, 0.05f);
         }
         else if(actualMousePos.x &lt; (lastMousePos.x - 20f))
         {
             cubesHolder.transform.RotateAround(-Vector3.up, 0.05f);
         }



         lastMousePos = Input.mousePosition;
     }
     if(Input.GetMouseButtonUp(0))
     {
         lastMousePos    = new Vector2();
         actualMousePos  = new Vector2();
         press           = false;
     }

But he cube start loose himself with some rotations, make sense with 3D, but what is the best way to make this work?

i upload the unity3D file here:

try.html">http://www.2shared.com/file/u7nJbJhW/Unity_try.html

Answer 1

Attach this script to any GameObject. It will create the cubes and make them children of the GameObject. I changed the script so the number of cubes and spacing is changeable.

using UnityEngine; public class Cube : MonoBehaviour { Vector2 lastMousePos, actualMousePos; bool press = false; public GameObject cubesHolder; public Vector3 nCubes = new Vector3(6f, 6f, 6f); public Vector3 spaceBetweenCubes = new Vector3(1f, 1f, 1f); private Vector3 cubeSize; private Vector3 cubeHalfSize; private Color[] colors;

 void Start () {
     colors = new Color[3] { Color.red, Color.blue, Color.green };
     createLotsOfCubes();
 }

 void Update () {
     if(Input.GetMouseButtonDown(0))
     {
         lastMousePos = Input.mousePosition;
         actualMousePos = Input.mousePosition;
         press = true;
     }
     if(press)
     {
         lastMousePos = Input.mousePosition;
         if(actualMousePos.x &gt; (lastMousePos.x + 20f))
             transform.Rotate(Vector3.up, 0.5f);
         else if(actualMousePos.x &lt; (lastMousePos.x - 20f))
             transform.Rotate(-Vector3.up, 0.5f);            
     }
     if(Input.GetMouseButtonUp(0))
     {
         lastMousePos = Vector2.zero;
         actualMousePos = Vector2.zero;
         press = false;
     }
 }

 void createLotsOfCubes ()
 {
     // Actual renderer size
     GameObject tmpCube = GameObject.CreatePrimitive(PrimitiveType.Cube);
     cubeSize = tmpCube.renderer.bounds.size;
     cubeHalfSize = cubeSize/2f;
     DestroyImmediate(tmpCube);

     // There are nCubes - (1,1,1) spaces between the cubes so the total size is
     Vector3 figureSize = new Vector3( nCubes.x * cubeSize.x + (nCubes.x - 1f) * spaceBetweenCubes.x, 
                                                         nCubes.y * cubeSize.y + (nCubes.y - 1f) * spaceBetweenCubes.y, 
                                                         nCubes.z * cubeSize.z + (nCubes.z - 1f) * spaceBetweenCubes.z );
     // Half of the size of the entire set of cubes
     Vector3 figureHalfSize = figureSize / 2.0f;

     for(int y = 0; y &lt; nCubes.x ; y++) 
     {
          for (int z = 0; z &lt; nCubes.y ; z++)  
         {
             for ( int x = 0; x &lt; nCubes.z ; x++)  
              {
                 GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
                 // Set this object as the parent object
                 cube.transform.parent = transform;
                  // The position is : -extent + size of cube + spacing + offset to center (half size of cube)
                 cube.transform.position = new Vector3( -figureHalfSize.x + x*(spaceBetweenCubes.x + cubeSize.x) + cubeHalfSize.x, 
                                                                             -figureHalfSize.y + y*(spaceBetweenCubes.y + cubeSize.y) + cubeHalfSize.y, 
                                                                             -figureHalfSize.z + z*(spaceBetweenCubes.z + cubeSize.z) + cubeHalfSize.z );
                 // Change the color
                  cube.transform.renderer.material.color = colors[Random.Range(0, 3)];
             }
          }
     }
 }

}

Rotation of multiple cubes!

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