ProperContainer

public class ProperContainer extends Container {

    public ProperContainer(InventoryPlayer playerinv, IInventory holder, int[] coords){
        assert(coords.length %2 == 0);
        bind(this, playerinv);

        int x, y;
        for(int i=0; i!=coords.length; i+=2){
            x= coords[i];
            y= coords[i+1];

            addSlotToContainer(new Slot(holder, i, x, y));
        }
    }
    @Override
    public boolean canInteractWith(EntityPlayer var1) {return true; }

    public static void bind(ProperContainer cont, InventoryPlayer playerinv){
        for (int x = 0; x < 9; x++) {
            cont.addSlotToContainer(new Slot(playerinv, x, 8+x*18, 126));   }

        for (int y = 0; y < 3; y++) {
            for (int x = 0; x < 9; x++) {
                cont.addSlotToContainer(new Slot(playerinv, y*9+x+9, 8+x*18, 68+y*18)); }
        }
    }
}