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Question by RumplyThrower · Nov 19, 2013 at 06:35 PM · freezegenerationworld

World generation

This is a script that is supposed to create the floor around the player if there is not a block there already but it freezes up unity

 #pragma strict

 var X : int;
 var Y : int;
 var Z : int;
 
 var grassBlock : GameObject;
 var hill : GameObject;
 
 function Start()
 {
     while(1)
     {
         for(var i=(X-64) ; i<(X+64) ; i++)
         {
             for(var j=(Z-64) ; j<(Z+64) ; j++)
             {
                 if (!(Physics.Raycast (Vector3(i,0,j+2), Vector3.back, 2 )))
                 {
                     Instantiate (grassBlock, Vector3(i,0,j), Quaternion.identity);
                 }
             }
         }
         yield;
     }
 }
 
 function Update () 
 {
     X = transform.position.x;
     Z = transform.position.z;
 }
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avatar image roojerry · Nov 19, 2013 at 06:45 PM 0
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while(1) is an infinite loop. Not escaping that loop is why unity is freezing

avatar image robertbu · Nov 19, 2013 at 07:13 PM 1
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@brianruggieri - The while(1) loop won't freeze the app because of the 'yield'.

avatar image roojerry · Nov 19, 2013 at 07:15 PM 1
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Ah. Didn't pick that out when the code was unformatted

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Answer by robertbu · Nov 19, 2013 at 07:12 PM

You are doing 16k of Raycasts (128 * 128) each frame. That is a lot raycasts. But even worse, if all those raycast fail, you are creating 16K of game objects. That will freeze the app...at least for awhile. Not sure of the nature of your game, but you may want to look to an alternate solution for creating your terrain.

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