So i'm trying to create a block world,(somewhat like minecraft), so iv'e created a function that change each block mesh according to the blocks surrounding it, so it wont have to take time trying to render triangles that are not visible, however,the function crash the engine when its excecuted,on a left mouse click, but the thing is that it seems to be random i.e., sometimes it works trhee times, but sometimes it doesn't works a single one, and crashes the engine istantly, i have no idea why, so i need help.


Is there any way to solve it or a better way to do it?
thanks in advance
This is the function that i'm using

Code:
//xx,yy, and zz are the coordinates of the block
//MX,MY,MZ, are the size of the array in wich block info is stored
//entity[] is an array of 64 entities conatining all the meshes
//Ni Mesh index
function UpdateBlock(var xx,yy,zz)
{
	var cn=0,Fa[6], Ni=0 ,i;

	if(Block[xx][yy][zz] == 6)//6 means full and 3 means full and rendered
	{
		for(i=0;i<6;i++)Fa[i]=0;//Reset values
		
		//Check if the Blocks arround are full(6||3) or empty(0),set the respective flag Fa[]
		if(xx>0) if(Block[xx-1][yy][zz] != 6 && Block[xx-1][yy][zz] != 3){Fa[0]=1;cn=1;}
		if(xx<MX)if(Block[xx+1][yy][zz] != 6 && Block[xx+1][yy][zz] != 3){Fa[1]=1;cn=1;}
		if(yy>0) if(Block[xx][yy-1][zz] != 6 && Block[xx][yy-1][zz] != 3){Fa[2]=1;cn=1;}
		if(yy<MY)if(Block[xx][yy+1][zz] != 6 && Block[xx][yy+1][zz] != 3){Fa[3]=1;cn=1;}
		if(zz>0) if(Block[xx][yy][zz-1] != 6 && Block[xx][yy][zz-1] != 3){Fa[4]=1;cn=1;}
		if(zz<MZ)if(Block[xx][yy][zz+1] != 6 && Block[xx][yy][zz+1] != 3){Fa[5]=1;cn=1;}
		
		
		Ni=0;
		//use all the flags(Fa[]) as if they were a single binary number
		//and translate it into decimal system, in order to get the mesh index
		
		for(i=0;i<6;i++)
		if(Fa[i]!=0|(5-i)!=0)
		Ni+= pow(Fa[i]*2,5-i);
		
		//If at least one face is visible
		if(cn==1)
		{
			//The block is full and has been rendered
			Block[xx][yy][zz] = 3;
			//Create the model
			you=ent_create(CUBE_MDL,vector(xx*dbb,yy*dbb,zz*dbb),NULL);
			//Set the apropiate mesh
			ent_setmesh(you,ent_getmesh(entity[Ni],0,0),0,0);
		}
	}	
}

Last edited by wdakfenixx; 10/09/12 03:55.
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