GMX

this.maxX = (l.getBlockX() + 10);
              this.minX = (l.getBlockX() - 10);

              this.maxY = (l.getBlockY() + 4);
              this.minY = (l.getBlockY() - 3);

              this.maxZ = (l.getBlockZ() + 10);
              this.minZ = (l.getBlockZ() - 10);

              this.x = this.minX;
              for (this.z = this.minZ; this.z <= this.maxZ; this.z += 1) {
                for (this.y = this.minY; this.y <= this.maxY; this.y += 1)
                {
                  Block block = world.getBlockAt(this.x, this.y, this.z);
                  this.b.add(block);
                }
              }
              this.x = this.maxX;
              for (this.z = this.minZ; this.z <= this.maxZ; this.z += 1) {
                for (this.y = this.minY; this.y <= this.maxY; this.y += 1)
                {
                  Block block = world.getBlockAt(this.x, this.y, this.z);
                  this.b.add(block);
                }
              }
              this.z = this.minZ;
              for (this.x = this.minX; this.x <= this.maxX; this.x += 1) {
                for (this.y = this.minY; this.y <= this.maxY; this.y += 1)
                {
                  Block block = world.getBlockAt(this.x, this.y, this.z);
                  this.b.add(block);
                }
              }
              this.z = this.maxZ;
              for (this.x = this.minX; this.x <= this.maxX; this.x += 1) {
                for (this.y = this.minY; this.y <= this.maxY; this.y += 1)
                {
                  Block block = world.getBlockAt(this.x, this.y, this.z);
                  this.b.add(block);
                }
              }