Applied-Energistics-2-tiler.../parts/CableBusStorage.java
2014-08-27 00:57:37 -05:00

108 lines
2.1 KiB
Java

package appeng.parts;
import net.minecraftforge.common.util.ForgeDirection;
import appeng.api.implementations.parts.IPartCable;
import appeng.api.parts.IFacadePart;
import appeng.api.parts.IPart;
/**
* Thin data storage to optimize memory usage for cables.
*/
public class CableBusStorage
{
private IPartCable center;
private IPart sides[];
private IFacadePart facades[];
protected IPartCable getCenter()
{
return center;
}
protected void setCenter(IPartCable center)
{
this.center = center;
}
protected IPart getSide(ForgeDirection side)
{
int x = side.ordinal();
if ( sides != null && sides.length > x )
return sides[x];
return null;
}
protected void setSide(ForgeDirection side, IPart part)
{
int x = side.ordinal();
if ( sides != null && sides.length > x && part == null )
{
sides[x] = null;
sides = shrink( sides, true );
}
else if ( part != null )
{
sides = grow( sides, x, true );
sides[x] = part;
}
}
public IFacadePart getFacade(int x)
{
if ( facades != null && facades.length > x )
return facades[x];
return null;
}
public void setFacade(int x, IFacadePart facade)
{
if ( facades != null && facades.length > x && facade == null )
{
facades[x] = null;
facades = shrink( facades, false );
}
else
{
facades = grow( facades, x, false );
facades[x] = facade;
}
}
private <T> T[] grow(T[] in, int new_value, boolean parts)
{
if ( in != null && in.length > new_value )
return in;
int newSize = new_value + 1;
T[] newArray = (T[]) (parts ? new IPart[newSize] : new IFacadePart[newSize]);
if ( in != null )
System.arraycopy( in, 0, newArray, 0, in.length );
return newArray;
}
private <T> T[] shrink(T[] in, boolean parts)
{
int newSize = 0;
for (int x = 0; x < in.length; x++)
if ( in[x] != null )
newSize = x;
if ( newSize == 0 )
return null;
newSize++;
if ( newSize == in.length )
return in;
T[] newArray = (T[]) (parts ? new IPart[newSize] : new IFacadePart[newSize]);
System.arraycopy( in, 0, newArray, 0, newSize );
return newArray;
}
}