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Message Sensor
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.. figure:: /images/bge_sensor_message.jpg
   :width: 300px

   Message Sensor.


The *Message* sensor can be used to detect either text messages or property values.
The sensor sends a positive pulse once an appropriate message is sent from anywhere in the
engine. It can be set up to only send a pulse upon a message with a specific subject.


See :doc:`Sensor Common Options </game_engine/logic/sensors/common_options>` for common options.

Special Options:

Subject
   Specifies the message that must be received to trigger the sensor (this can be left blank).

.. note::

   See :doc:`Message Actuator </game_engine/logic/actuators/types/message>` for how to send messages.