I have a problem with my current collision implementation.

Currently for player collision, I just use an AABB where I check if another AABB is in the way of the player, as shown in this code. (The code below is a sample of checking for collisions in the Z axis)

for (int z = (int) (this.position.getZ()); z > this.position.getZ() - moveSpeed - boundingBoxDepth; z--)
{
    // The maximum Z you can get.
    int maxZ = (int) (this.position.getZ() - moveSpeed - boundingBoxDepth) + 1;
    AxisAlignedBoundingBox aabb = WarmupWeekend.getInstance().currentLevel.getAxisAlignedBoundingBoxAt(new Vector3f(this.position.getX(), this.position.getY(), z));
    AxisAlignedBoundingBox potentialCameraBB = new AxisAlignedBoundingBox(this, "collider", new Vector3f(this.position.getX(), this.position.getY(), z), boundingBoxWidth, boundingBoxHeight, boundingBoxDepth);
    if (aabb != null)
    {
        if (potentialCameraBB.colliding(aabb) && aabb.COLLIDER_TYPE.equalsIgnoreCase("collider"))
        {
            break;
        }
        else if (!potentialCameraBB.colliding(aabb) && z == maxZ)
        {
            if (this.grounded)
            {
                playFootstep();
            }
            this.position.z -= moveSpeed;
            break;
        }
    }
    else if (z == maxZ)
    {
        if (this.grounded)
        {
            playFootstep();
        }
        this.position.z -= moveSpeed;
        break;
    }
}

Now, when I tried to implement rotation to this method, everything broke. I'm wondering how I could implement rotation to this block (and as all other checks in each axis are the same) and others. Thanks in advance.