Method isValid

src/main/java/net/minecraft/world/World.java:244–247

Check if the given BlockPos has valid coordinates

(BlockPos pos)

     * Check if the given BlockPos has valid coordinates
     */
    private boolean isValid(BlockPos pos)
    {
        return pos.getX() >= -30000000 && pos.getZ() >= -30000000 && pos.getX() < 30000000 && pos.getZ() < 30000000 && pos.getY() >= 0 && pos.getY() < 256;
    }

    /**
     * Checks to see if an air block exists at the provided location. Note that this only checks to see if the blocks